一次编辑 GridView 的所有行
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。
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default7.aspx.cs" Inherits="Default7" %>
<!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>无标题页</title></head><body> <form id="form1" runat="server"> <div> <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="Persist Security Info=False;User ID=sa;Password=;Initial Catalog=Book;Server=." ProviderName="System.Data.SqlClient" 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" /> </div> </form></body></html>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;public partial class Default7 : System.Web.UI.Page{
protected void Page_Load(object sender, EventArgs e)
{
} 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()); }
}
