在平时的实际项目中，为了减少往返提交数据，可以一次编辑 GridView 的所有行，这样大大提高用户使用产品的体验。下面就讲解何一次编辑 GridView 的所有数据行。在下面的例子中，数据库使用《ASP.NET 2.0应用开发技术》一书中Site\App_Data\下的 ASPNET20Book.mdb 数据库。例子中的数据更新方式使用 SqlDataSource 数据源控件的UpdateCommand属性，但此方法同样适用于存储过程，SQL 语句等。C# <%@ Page Language="C#" Debug="true" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><script runat="server">string[] ClassNameArray = { "大学", "中学", "高中" }; //初始化原来的值protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e){ if (e.Row.RowType == DataControlRowType.DataRow) { System.Data.DataRowView drv = (System.Data.DataRowView)e.Row.DataItem; RadioButtonList rbl = (RadioButtonList)e.Row.FindControl("txtGender"); if (rbl != null) { if ((bool)drv["Gender"]) { rbl.Items.FindByText("男").Selected = true; } else { rbl.Items.FindByText("女").Selected = true; } } DropDownList ddl = (DropDownList)e.Row.FindControl("txtClassName"); if (ddl != null) { ddl.Items.FindByText(drv["ClassName"].ToString()).Selected = true; } }} // 初始化项目列表protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e){ if (e.Row.RowType == DataControlRowType.DataRow) { DropDownList ddl = (DropDownList)e.Row.FindControl("txtClassName"); ddl.DataSource = ClassNameArray; ddl.DataBind(); }} //处理提交的数据protected void XianhuiMeng_Click(object sender, EventArgs e){ foreach (GridViewRow gvr in GridView1.Rows) { string tGender = ((RadioButtonList)gvr.FindControl("txtGender")).SelectedValue; SqlDataSource1.UpdateParameters.Add(new Parameter("@Title", TypeCode.String, ((TextBox)gvr.FindControl("txtTitle")).Text)); SqlDataSource1.UpdateParameters.Add(new Parameter("@Gender", TypeCode.Boolean, (tGender == "男" ? "True" : "False"))); SqlDataSource1.UpdateParameters.Add(new Parameter("@ClassName", TypeCode.String, ((DropDownList)gvr.FindControl("txtClassName")).SelectedValue)); SqlDataSource1.UpdateParameters.Add(new Parameter("@id", TypeCode.Int32, GridView1.DataKeys[gvr.DataItemIndex].Value.ToString())); SqlDataSource1.Update(); SqlDataSource1.UpdateParameters.Clear(); } Response.Redirect(Request.UrlReferrer.ToString());}</script> <html xmlns="http://www.w3.org/1999/xhtml"><head id="Head1" runat="server"><title>同时编辑 GridView的 多行</title></head><body><form id="form1" runat="server"> <asp:GridView ID="GridView1" runat="server" Font-Size="12px" CellPadding="3" AutoGenerateColumns="False" DataKeyNames="id" DataSourceID="SqlDataSource1" OnRowDataBound="GridView1_RowDataBound" OnRowCreated="GridView1_RowCreated"> <HeaderStyle BackColor="#EDEDED" /> <Columns> <asp:TemplateField HeaderText="姓名"> <ItemTemplate> <asp:TextBox ID="txtTitle" runat="server" Text='<%#Eval("Title") %>'></asp:TextBox> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="性别"> <ItemTemplate> <asp:RadioButtonList ID="txtGender" runat="server" RepeatColumns="2"> <asp:ListItem Text='男'></asp:ListItem> <asp:ListItem Text='女'></asp:ListItem> </asp:RadioButtonList> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="学历"> <ItemTemplate> <asp:DropDownList ID="txtClassName" runat="server"> </asp:DropDownList> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> <asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|ASPNET20Book.mdb;Persist Security Info=True" ProviderName="System.Data.OleDb" SelectCommand="SELECT * FROM [Student]" UpdateCommand="Update [Student] Set Title = @Title,Gender = @Gender,ClassName=@ClassName Where id=@id"> </asp:SqlDataSource> <asp:Button ID="Button1" runat="server" Text="保存所有修改" OnClick="XianhuiMeng_Click" /></form></body></html> 注意：对于SQL Server 数据库，参数名字不加@。另外注意：不同数据库类型和不同的数据源，UpdateCommand="Update [Student] Set Title = @Title,Gender = @Gender,ClassName=@ClassName Where id=@id"写法和SqlDataSource1.UpdateParameters.Add(new Parameter("@Title", TypeCode.String, ((TextBox)gvr.FindControl("txtTitle")).Text)); 的写法会有所区别。
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