asp.net GridView 用法詳解
阿新 • • 發佈:2019-01-31
l GridView無程式碼分頁排序 l GridView選中,編輯,取消,刪除 l GridView正反雙向排序 l GridView和下拉選單DropDownList結合 l GridView和CheckBox結合 l 滑鼠移到GridView某一行時改變該行的背景色方法一 l 滑鼠移到GridView某一行時改變該行的背景色方法二 l GridView實現刪除時彈出確認對話方塊 l GridView實現自動編號 l GridView實現自定義時間貨幣等字串格式 l GridView實現用“...”代替超長字串 l GridView一般換行與強制換行 l GridView顯示隱藏某一列 l GridView彈出新頁面/彈出新視窗 l GridView固定表頭(不用javascript只用CSS,2行程式碼,很好用) l GridView合併表頭多重表頭無錯完美版(以合併3列3行舉例) l GridView突出顯示某一單元格(例如金額低於多少,分數不及格等) l GridView加入自動求和求平均值小計 l GridView資料匯入Excel/Excel資料讀入GridView 1.GridView簡單程式碼分頁排序: 1.AllowSorting設為True,aspx程式碼中是AllowSorting="True"; 2.預設1頁10條,如果要修改每頁條數,修改PageSize即可,在aspx程式碼中是PageSize="12"。 3.預設的是單向排序的,右擊GridView彈出“屬性”,選擇AllowSorting為True即可。 4.新增程式碼: protected void GridView1_PageIndexChanging(object sender, GridViewPageEventArgs e) { GridView1.PageIndex = e.NewPageIndex; Bind(); } 2.GridView選中,編輯,取消,刪除: 後臺程式碼: using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; public partial class _Default : System.Web.UI.Page { SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=資料庫名;Uid=帳號;Pwd=密碼"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bind(); } } protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e) { GridView1.EditIndex = e.NewEditIndex; bind(); } //刪除 protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e) { string sqlstr = "delete from 表 where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcon = new SqlConnection(strCon); sqlcom = new SqlCommand(sqlstr,sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); bind(); } //更新 protected void GridView1_RowUpdating(object sender, GridViewUpdateEventArgs e) { sqlcon = new SqlConnection(strCon); string sqlstr = "update 表 set 欄位1='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',欄位2='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',欄位3='" + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[3].Controls[0])).Text.ToString().Trim() + "' where id='" + GridView1.DataKeys[e.RowIndex].Value.ToString() + "'"; sqlcom=new SqlCommand(sqlstr,sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); GridView1.EditIndex = -1; bind(); } //取消 protected void GridView1_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e) { GridView1.EditIndex = -1; bind(); } //繫結 public void bind() { string sqlstr = "select * from 表"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "表"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "id" };//主鍵 GridView1.DataBind(); sqlcon.Close(); } } 前臺主要程式碼: ... ... <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="4" ForeColor="#333333" GridLines="None" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit"> <FooterStyle BackColor="#990000" Font-Bold="True" ForeColor="White" /> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="使用者ID" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="使用者姓名" /> <asp:BoundField DataField="員工性別" HeaderText="性別" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:CommandField HeaderText="選擇" ShowSelectButton="True" /> <asp:CommandField HeaderText="編輯" ShowEditButton="True" /> <asp:CommandField HeaderText="刪除" ShowDeleteButton="True" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> 3.GridView正反雙向排序: 後臺程式碼: using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; public partial class Default3 : System.Web.UI.Page { SqlConnection sqlcon; string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd="; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { ViewState["SortOrder"] = "身份證號碼"; ViewState["OrderDire"] = "ASC"; bind(); } } protected void GridView1_Sorting(object sender, GridViewSortEventArgs e) { string sPage = e.SortExpression; if (ViewState["SortOrder"].ToString() == sPage) { if (ViewState["OrderDire"].ToString() == "Desc") ViewState["OrderDire"] = "ASC"; else ViewState["OrderDire"] = "Desc"; } else { ViewState["SortOrder"] = e.SortExpression; } bind(); } public void bind() { string sqlstr = "select top 5 * from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飛狐工作室"); DataView view = myds.Tables["飛狐工作室"].DefaultView; string sort = (string)ViewState["SortOrder"] + " " + (string)ViewState["OrderDire"]; view.Sort = sort; GridView1.DataSource = view; GridView1.DataBind(); sqlcon.Close(); } } 前臺主要程式碼: <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False" CellPadding="3" Font-Size="9pt" OnSorting="GridView1_Sorting" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px"> <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="使用者ID" SortExpression="身份證號碼" /> <asp:BoundField DataField="姓名" HeaderText="使用者姓名" SortExpression="姓名"/> <asp:BoundField DataField="員工性別" HeaderText="性別" SortExpression="員工性別"/> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> 4.GridView和下拉選單DropDownList結合: 後臺程式碼: using System; using System.Data; using System.Configuration; using System.Collections; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; public partial class Default4 : System.Web.UI.Page { SqlConnection sqlcon; string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { DropDownList ddl; if (!IsPostBack) { string sqlstr = "select top 5 * from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飛狐工作室"); GridView1.DataSource = myds; GridView1.DataBind(); for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { DataRowView mydrv = myds.Tables["飛狐工作室"].DefaultView[i]; if (Convert.ToString(mydrv["員工性別"]).Trim() == "True") { ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1"); ddl.SelectedIndex = 0; } if (Convert.ToString(mydrv["員工性別"]).Trim() == "False") { ddl = (DropDownList)GridView1.Rows[i].FindControl("DropDownList1"); ddl.SelectedIndex = 1; } } sqlcon.Close(); } } public SqlDataReader ddlbind() { string sqlstr = "select distinct 員工性別 from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlCommand sqlcom = new SqlCommand(sqlstr, sqlcon); sqlcon.Open(); return sqlcom.ExecuteReader(); } 前臺主要程式碼: <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False" CellPadding="3" Font-Size="9pt" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px"> <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="使用者ID" SortExpression="身份證號碼" /> <asp:BoundField DataField="姓名" HeaderText="使用者姓名" SortExpression="姓名"/> <asp:TemplateField HeaderText="員工性別"> <ItemTemplate> <asp:DropDownList ID="DropDownList1" runat="server" DataSource='<%# ddlbind()%>' DataValueField="員工性別" DataTextField="員工性別"> </asp:DropDownList> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> 5.GridView和CheckBox結合: 後臺程式碼: using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; public partial class Default5 : System.Web.UI.Page { SqlConnection sqlcon; string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bind(); } } protected void CheckBox2_CheckedChanged(object sender, EventArgs e) { for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1"); if (CheckBox2.Checked == true) { cbox.Checked = true; } else { cbox.Checked = false; } } } protected void Button2_Click(object sender, EventArgs e) { sqlcon = new SqlConnection(strCon); SqlCommand sqlcom; for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1"); if (cbox.Checked == true) { string sqlstr = "delete from 飛狐工作室 where 身份證號碼='" + GridView1.DataKeys[i].Value + "'"; sqlcom = new SqlCommand(sqlstr, sqlcon); sqlcon.Open(); sqlcom.ExecuteNonQuery(); sqlcon.Close(); } } bind(); } protected void Button1_Click(object sender, EventArgs e) { CheckBox2.Checked = false; for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { CheckBox cbox = (CheckBox)GridView1.Rows[i].FindControl("CheckBox1"); cbox.Checked = false; } } public void bind() { string sqlstr = "select top 5 * from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "tb_Member"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份證號碼" }; GridView1.DataBind(); sqlcon.Close(); } } 前臺主要程式碼: <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False" CellPadding="3" Font-Size="9pt" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px"> <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:TemplateField> <ItemTemplate> <asp:CheckBox ID="CheckBox1" runat="server" /> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="身份證號碼" HeaderText="使用者ID" SortExpression="身份證號碼" /> <asp:BoundField DataField="姓名" HeaderText="使用者姓名" SortExpression="姓名"/> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址"/> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> <asp:CheckBox ID="CheckBox2" runat="server" AutoPostBack="True" Font-Size="9pt" OnCheckedChanged="CheckBox2_CheckedChanged" Text="全選" /> <asp:Button ID="Button1" runat="server" Font-Size="9pt" Text="取消" OnClick="Button1_Click" /> <asp:Button ID="Button2" runat="server" Font-Size="9pt" Text="刪除" OnClick="Button2_Click" /> 6.滑鼠移到GridView某一行時改變該行的背景色方法一: 做法: 雙擊GridView的OnRowDataBound事件; 在後臺的GridView1_RowDataBound()方法新增程式碼,最後程式碼如下所示: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //首先判斷是否是資料行 if (e.Row.RowType == DataControlRowType.DataRow) { //當滑鼠停留時更改背景色 e.Row.Attributes.Add("onmouseover", "c=this.style.backgroundColor;this.style.backgroundColor='#00A9FF'"); //當滑鼠移開時還原背景色 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor=c"); } } 前臺程式碼: <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>實現滑鼠劃過改變GridView的行背景色清清月兒http://blog.csdn.net/21aspnet </title> </head> <body> <form id="form1" runat="server"> <div> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份證號碼" DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound"> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="身份證號碼" ReadOnly="True" SortExpression="身份證號碼" /> <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" SortExpression="家庭住址" /> <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" /> </Columns> <FooterStyle BackColor="White" ForeColor="#000066" /> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北風貿易ConnectionString1 %>" SelectCommand="SELECT top 5 [身份證號碼], [姓名], [員工性別], [家庭住址], [郵政編碼] FROM [飛狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource> </div> </form> </body> </html> 7.滑鼠移到GridView某一行時改變該行的背景色方法二: 做法:和上面的一樣就是程式碼不同 protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //如果是繫結資料行 if (e.Row.RowType == DataControlRowType.DataRow) { //滑鼠經過時,行背景色變 e.Row.Attributes.Add("onmouseover", "this.style.backgroundColor='#E6F5FA'"); //滑鼠移出時,行背景色變 e.Row.Attributes.Add("onmouseout", "this.style.backgroundColor='#FFFFFF'"); } } 8.GridView實現刪除時彈出確認對話方塊: 實現方法: 雙擊GridView的OnRowDataBound事件; 在後臺的GridView1_RowDataBound()方法新增程式碼,最後程式碼如下所示: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { //如果是繫結資料行 if (e.Row.RowType == DataControlRowType.DataRow) { if (e.Row.RowState == DataControlRowState.Normal || e.Row.RowState == DataControlRowState.Alternate) { ((LinkButton)e.Row.Cells[6].Controls[0]).Attributes.Add("onclick", "javascript:return confirm('你確認要刪除:/"" + e.Row.Cells[1].Text + "/"嗎?')"); } } } 9.GridView實現自動編號: 實現方法: 雙擊GridView的OnRowDataBound事件; 在後臺的GridView1_RowDataBound()方法新增程式碼,最後程式碼如下所示: protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowIndex != -1) { int id = e.Row.RowIndex + 1; e.Row.Cells[0].Text = id.ToString(); } } 注意這時最好把前臺的第一列的表頭該為“編號”,因為以前的第一列被“吃掉”了。 <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound"> <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="編號" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="使用者姓名" /> <asp:BoundField DataField="員工性別" HeaderText="性別" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:CommandField HeaderText="選擇" ShowSelectButton="True" /> <asp:CommandField HeaderText="編輯" ShowEditButton="True" /> <asp:CommandField HeaderText="刪除" ShowDeleteButton="True" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> 10.GridView實現自定義時間貨幣等字串格式: 解決方法: 在asp.net 2.0中,如果要在繫結列中顯示比如日期格式等,如果用下面的方法是顯示不了的 <asp :BoundField DataField="CreationDate" DataFormatString="{0:M-dd-yyyy}" HeaderText="CreationDate" /> 主要是由於htmlencode屬性預設設定為true,已防止XSS攻擊,安全起見而用的,所以,可以有以下兩種方法解決 1、 <asp :GridView ID="GridView1" runat="server"> <columns> <asp :BoundField DataField="CreationDate" DataFormatString="{0:M-dd-yyyy}" HtmlEncode="false" HeaderText="CreationDate" /> </columns> </asp> 將htmlencode設定為false即可 另外的解決方法為,使用模版列 <asp :GridView ID="GridView3" runat="server" > <columns> <asp :TemplateField HeaderText="CreationDate" > <edititemtemplate> <asp :Label ID="Label1" runat="server" Text='<%# Eval("CreationDate", "{0:M-dd-yyyy}") %>'> </asp> </edititemtemplate> <itemtemplate> <asp :Label ID="Label1" runat="server" Text=’<%# Bind("CreationDate", "{0:M-dd-yyyy}") %>'> </asp> </itemtemplate> </asp> </columns> </asp> 前臺程式碼: <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="身份證號碼" DataSourceID="SqlDataSource1" AllowSorting="True" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" CellPadding="3" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound"> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="身份證號碼" ReadOnly="True" SortExpression="身份證號碼" /> <asp:BoundField DataField="姓名" HeaderText="姓名" SortExpression="姓名" /> <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" /> <asp:BoundField DataField="出生日期" HeaderText="出生日期" SortExpression="出生日期" /> <asp:BoundField DataField="起薪" HeaderText="起薪" SortExpression="起薪" /> </Columns> <FooterStyle BackColor="White" ForeColor="#000066" /> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:北風貿易ConnectionString1 %>" SelectCommand="SELECT top 5 [出生日期], [起薪], [身份證號碼], [姓名], [家庭住址], [郵政編碼] FROM [飛狐工作室]" DataSourceMode="DataReader"></asp:SqlDataSource> 附錄-常用格式化公式: {0:C} 貨幣; {0:D4}由0填充的4個字元寬的欄位中顯示整數; {0:000.0}四捨五入小數點保留第幾位有效數字; {0:N2}小數點保留2位有效數字;{0:N2}% 小數點保留2位有效數字加百分號; {0:D}長日期;{0:d}短日期;{0:yy-MM-dd} 例如07-3-25;;{0:yyyy-MM-dd} 例如2007-3-25 11.GridView實現用“...”代替超長字串: 解決方法:資料繫結後過濾每一行即可 for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { DataRowView mydrv; string gIntro; if (GridView1.PageIndex == 0) { mydrv = myds.Tables["飛狐工作室"].DefaultView[i];//表名 gIntro = Convert.ToString(mydrv["家庭住址"]);//所要處理的欄位 GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2); } else { mydrv = myds.Tables["飛狐工作室"].DefaultView[i + (5 * GridView1.PageIndex)]; gIntro = Convert.ToString(mydrv["家庭住址"]); GridView1.Rows[i].Cells[3].Text = SubStr(gIntro, 2); } } 呼叫的方法: public string SubStr(string sString, int nLeng) { if (sString.Length <= nLeng) { return sString; } string sNewStr = sString.Substring(0, nLeng); sNewStr = sNewStr + "..."; return sNewStr; } 12.GridView一般換行與強制換行: 首先設定<asp:BoundField DataField="家庭住址" HeaderText="家庭住址" ItemStyle-Width="100" />gridview裡有一列繫結的資料很長,顯示的時候在一行裡面顯示,頁面拉得很寬。原因是連續英文段為一個整體導致的,在RowDataBound中新增上了一句e.Row.Cells[2].Style.Add("word-break", "break-all")就可以。如果要給所有的列增加此屬性: protected void Page_Load(object sender, EventArgs e) { //正常換行 GridView1.Attributes.Add("style", "word-break:keep-all;word-wrap:normal"); //下面這行是自動換行 GridView1.Attributes.Add("style", "word-break:break-all;word-wrap:break-word"); if (!IsPostBack) { bind();//呼叫資料繫結即可 } } 總之:善用CSS的word-break:break-all;word-wrap:break-word屬性即可,這個屬性是通用的對於頑固的南換行問題都可以解決,不侷限於GridView。 13.GridView顯示隱藏某一列: 解決方案: public void bind() { string sqlstr = "select top 5 * from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飛狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份證號碼" }; GridView1.DataBind(); sqlcon.Close(); GridView1.Columns[3].Visible = false;//一開始隱藏 CheckBox1.Checked = false;//如果不這樣後面的程式碼會把他True } 雙擊CheckBox1,在CheckedChanged方法裡寫上程式碼,最後程式碼如下: protected void CheckBox1_CheckedChanged(object sender, EventArgs e) { GridView1.Columns[3].Visible=! GridView1.Columns[3].Visible; Response.Write("GridView1的第4列現在的顯示隱藏狀態是:"+GridView1.Columns[3].Visible.ToString()); } 注意:CheckBox1的AutoPostBack要True! 14.GridView彈出新頁面: <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="編號" ReadOnly="True" /> <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:HyperLinkField HeaderText="姓名" Text="姓名" DataNavigateUrlFields="姓名" DataNavigateUrlFormatString="Default6.aspx?GoodsID={0}" Target="mainframe" NavigateUrl="~/Default6.aspx" DataTextField="姓名" > </asp:HyperLinkField> <asp:CommandField HeaderText="選擇" ShowSelectButton="True" /> <asp:CommandField HeaderText="編輯" ShowEditButton="True" /> <asp:CommandField HeaderText="刪除" ShowDeleteButton="True" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" /> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> DataNavigateUrlFields是連結的欄位名,DataNavigateUrlFormatString是路徑。 15.GridView固定表頭(不用javascript只用CSS!,很好用): 程式碼: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>GridView固定表頭 清清月兒http://blog.csdn.net/21aspnet </title> <style> .Freezing { position:relative ; table-layout:fixed; top:expression(this.offsetParent.scrollTop); z-index: 10; } .Freezing th{text-overflow:ellipsis;overflow:hidden;white-space: nowrap;padding:2px;} </style> </head> <body style="font-size=12px"> <form id="form1" runat="server"> <div style="overflow-y: scroll; height: 200px;width:300px" id="dvBody"> <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowDeleting="GridView1_RowDeleting" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="編號" ReadOnly="True" /> <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" SortExpression="郵政編碼" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" CssClass="Freezing"/> </asp:GridView> </div> </form> </body> </html> 用法:CSS設如上的樣式,HeaderStyle加CssClass="Freezing,套住GridView的Div設定高度寬度 <div style="overflow-y: scroll; height: 200px;width:200px" > 16.GridView合併表頭多重表頭無錯完美版(以合併3列3行舉例) 後臺程式碼: protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e) { switch (e.Row.RowType) { case DataControlRowType.Header: //第一行表頭 TableCellCollection tcHeader = e.Row.Cells; tcHeader.Clear(); tcHeader.Add(new TableHeaderCell()); tcHeader[0].Attributes.Add("rowspan", "3"); //跨Row tcHeader[0].Attributes.Add("bgcolor", "white"); tcHeader[0].Text = ""; tcHeader.Add(new TableHeaderCell()); //tcHeader[1].Attributes.Add("bgcolor", "Red"); tcHeader[1].Attributes.Add("colspan", "6"); //跨Column tcHeader[1].Text = "全部資訊</th></tr><tr>"; //第二行表頭 tcHeader.Add(new TableHeaderCell()); tcHeader[2].Attributes.Add("bgcolor", "DarkSeaGreen"); tcHeader[2].Text = "身份證號碼"; tcHeader.Add(new TableHeaderCell()); tcHeader[3].Attributes.Add("bgcolor", "LightSteelBlue"); tcHeader[3].Attributes.Add("colspan", "2"); tcHeader[3].Text = "基本資訊"; tcHeader.Add(new TableHeaderCell()); tcHeader[4].Attributes.Add("bgcolor", "DarkSeaGreen"); tcHeader[4].Text = "福利"; tcHeader.Add(new TableHeaderCell()); tcHeader[5].Attributes.Add("bgcolor", "LightSteelBlue"); tcHeader[5].Attributes.Add("colspan", "2"); tcHeader[5].Text = "聯絡方式</th></tr><tr>"; //第三行表頭 tcHeader.Add(new TableHeaderCell()); tcHeader[6].Attributes.Add("bgcolor", "Khaki"); tcHeader[6].Text = "身份證號碼"; tcHeader.Add(new TableHeaderCell()); tcHeader[7].Attributes.Add("bgcolor", "Khaki"); tcHeader[7].Text = "姓名"; tcHeader.Add(new TableHeaderCell()); tcHeader[8].Attributes.Add("bgcolor", "Khaki"); tcHeader[8].Text = "出生日期"; tcHeader.Add(new TableHeaderCell()); tcHeader[9].Attributes.Add("bgcolor", "Khaki"); tcHeader[9].Text = "薪水"; tcHeader.Add(new TableHeaderCell()); tcHeader[10].Attributes.Add("bgcolor", "Khaki"); tcHeader[10].Text = "家庭住址"; tcHeader.Add(new TableHeaderCell()); tcHeader[11].Attributes.Add("bgcolor", "Khaki"); tcHeader[11].Text = "郵政編碼"; break; } } } 前臺: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head runat="server"> <title>GridView合併多重表頭表頭 清清月兒http://blog.csdn.net/21aspnet </title> </head> <body > <form id="form1" runat="server"> <div > <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowCreated="GridView1_RowCreated" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:CommandField HeaderText="編輯" ShowEditButton="True" /> <asp:BoundField DataField="身份證號碼" HeaderText="編號" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> <asp:BoundField DataField="出生日期" HeaderText="郵政編碼" /> <asp:BoundField DataField="起薪" HeaderText="起薪" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> </div> </form> </body> </html> 17.GridView突出顯示某一單元格(例如金額低於多少,分數不及格等) 解決方案:主要是繫結後過濾 GridView1.DataBind(); for (int i = 0; i <= GridView1.Rows.Count - 1; i++) { DataRowView mydrv = myds.Tables["飛狐工作室"].DefaultView[i]; string score = Convert.ToString(mydrv["起薪"]); if (Convert.ToDouble(score) < 34297.00)//大家這裡根據具體情況設定可能ToInt32等等 { GridView1.Rows[i].Cells[4].BackColor = System.Drawing.Color.Red; } } sqlcon.Close(); 前臺程式碼: <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" > <head id="Head1" runat="server"> <title>GridView突出顯示某一單元格 清清月兒http://blog.csdn.net/21aspnet </title> </head> <body > <form id="form1" runat="server"> <div > <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:CommandField HeaderText="編輯" ShowEditButton="True" /> <asp:BoundField DataField="身份證號碼" HeaderText="編號" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> <asp:BoundField DataField="出生日期" HeaderText="郵政編碼" /> <asp:BoundField DataField="起薪" HeaderText="起薪" DataFormatString="{0:C}" HtmlEncode="false"/> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> </div> </form> </body> </html> 18.GridView加入自動求和求平均值小計 解決方案: private double sum = 0;//取指定列的資料和,你要根據具體情況對待可能你要處理的是int protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowIndex >= 0) { sum += Convert.ToDouble(e.Row.Cells[6].Text); } else if (e.Row.RowType == DataControlRowType.Footer) { e.Row.Cells[5].Text = "總薪水為:"; e.Row.Cells[6].Text = sum.ToString(); e.Row.Cells[3].Text = "平均薪水為:"; e.Row.Cells[4].Text = ((int)(sum / GridView1.Rows.Count)).ToString(); } } 前臺:唯一的花頭就是設定ShowFooter="True" ,否則預設表頭為隱藏的! <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" OnRowEditing="GridView1_RowEditing" OnRowUpdating="GridView1_RowUpdating" OnRowCancelingEdit="GridView1_RowCancelingEdit" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" OnRowDataBound="GridView1_RowDataBound" ShowFooter="True" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:CommandField HeaderText="編輯" ShowEditButton="True" /> <asp:BoundField DataField="身份證號碼" HeaderText="編號" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> <asp:BoundField DataField="出生日期" HeaderText="郵政編碼" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" /> <asp:BoundField DataField="起薪" HeaderText="起薪" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> 19.GridView資料匯入Excel/Excel資料讀入GridView 解決方案: 頁面增加一個按鈕,單擊事件新增如下方法: protected void Button1_Click(object sender, EventArgs e) { Export("application/ms-excel", "學生成績報表.xls"); } private void Export(string FileType, string FileName) { Response.Charset = "GB2312"; Response.ContentEncoding = System.Text.Encoding.UTF7; Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString()); Response.ContentType = FileType; this.EnableViewState = false; StringWriter tw = new StringWriter(); HtmlTextWriter hw = new HtmlTextWriter(tw); GridView1.RenderControl(hw); Response.Write(tw.ToString()); Response.End(); } //如果沒有下面方法會報錯型別“GridView”的控制元件“GridView1”必須放在具有 runat=server 的窗體標記內 public override void VerifyRenderingInServerForm(Control control) { } 還有由於是檔案操作所以要引入名稱空間IO和Text 後臺程式碼: using System; using System.Data; using System.Configuration; using System.Web; using System.Web.Security; using System.Web.UI; using System.Web.UI.WebControls; using System.Web.UI.WebControls.WebParts; using System.Web.UI.HtmlControls; using System.Data.SqlClient; using System.Drawing; using System.IO; using System.Text; public partial class Default7 : System.Web.UI.Page { SqlConnection sqlcon; SqlCommand sqlcom; string strCon = "Data Source=(local);Database=北風貿易;Uid=sa;Pwd=sa"; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { bind(); } } public void bind() { string sqlstr = "select top 5 * from 飛狐工作室"; sqlcon = new SqlConnection(strCon); SqlDataAdapter myda = new SqlDataAdapter(sqlstr, sqlcon); DataSet myds = new DataSet(); sqlcon.Open(); myda.Fill(myds, "飛狐工作室"); GridView1.DataSource = myds; GridView1.DataKeyNames = new string[] { "身份證號碼" }; GridView1.DataBind(); sqlcon.Close(); } protected void Button1_Click(object sender, EventArgs e) { Export("application/ms-excel", "學生成績報表.xls"); } private void Export(string FileType, string FileName) { Response.Charset = "GB2312"; Response.ContentEncoding = System.Text.Encoding.UTF7; Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, Encoding.UTF8).ToString()); Response.ContentType = FileType; this.EnableViewState = false; StringWriter tw = new StringWriter(); HtmlTextWriter hw = new HtmlTextWriter(tw); GridView1.RenderControl(hw); Response.Write(tw.ToString()); Response.End(); } public override void VerifyRenderingInServerForm(Control control) { } } 前臺: <asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" CellPadding="3" BackColor="White" BorderColor="#CCCCCC" BorderStyle="None" BorderWidth="1px" Font-Size="12px" > <FooterStyle BackColor="White" ForeColor="#000066" /> <Columns> <asp:BoundField DataField="身份證號碼" HeaderText="編號" ReadOnly="True" /> <asp:BoundField DataField="姓名" HeaderText="姓名" /> <asp:BoundField DataField="出生日期" HeaderText="郵政編碼" /> <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" /> <asp:BoundField DataField="郵政編碼" HeaderText="郵政編碼" /> <asp:BoundField DataField="起薪" HeaderText="起薪" /> </Columns> <RowStyle ForeColor="#000066" /> <SelectedRowStyle BackColor="#669999" Font-Bold="True" ForeColor="White" /> <PagerStyle BackColor="White" ForeColor="#000066" HorizontalAlign="Left" CssClass="ms-formlabel DataGridFixedHeader"/> <HeaderStyle BackColor="#006699" Font-Bold="True" ForeColor="White" /> </asp:GridView> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="匯出" /> 讀取Excel資料的程式碼:這個很簡單的 private DataSet CreateDataSource() { string strCon; strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + Server.MapPath("excel.xls") + "; Extended Properties=Excel 8.0;"; OleDbConnection olecon = new OleDbConnection(strCon); OleDbDataAdapter myda = new OleDbDataAdapter("SELECT * FROM [Sheet1$]", strCon); DataSet myds = new DataSet(); myda.Fill(myds); return myds; } protected void Button1_Click(object sender, EventArgs e) { GridView1.DataSource = CreateDataSource(); GridView1.DataBind(); }