DataGrid 完全攻略之七（實作選擇、編輯和修改）

using System;

using System.Collections;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Web;

using System.Web.SessionState;

using System.Web.UI;

using System.Web.UI.WebControls;

using System.Web.UI.HtmlControls;

using System.Data.SqlClient;

namespace MsDataGrid

{

    /// <summary>

    /// WebForm1 的摘要說明。

    /// </summary>

    public class UserDelete : System.Web.UI.Page

    {

        protected System.Web.UI.WebControls.DataGrid dgShow;

        private void Page_Load(object sender, System.EventArgs e)

        {

            // 在此處放置使用者代碼以初始化頁面

            if(!IsPostBack)

                BindData();

        }

        private void BindData()

            string strCon = System.Configuration.ConfigurationSettings.AppSettings["DSN"];

            SqlConnection con = new SqlConnection(strCon);

            SqlDataAdapter da = new SqlDataAdapter("Select * from tbStudentinfo",con);

            DataSet ds = new DataSet();

            da.Fill(ds,"studentinfo");

            dgShow.DataSource = ds.Tables["studentinfo"].DefaultView;

            dgShow.DataBind();

        Web Form Designer generated code

        private void dgShow_EditCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

            dgShow.EditItemIndex = e.Item.ItemIndex;

            BindData();

        private void dgShow_PageIndexChanged(object source, System.Web.UI.WebControls.DataGridPageChangedEventArgs e)

            dgShow.CurrentPageIndex = e.NewPageIndex;

        private void dgShow_CancelCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

            dgShow.EditItemIndex = -1;

        private void dgShow_DeleteCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

            if(dgShow.Items.Count==1)

            {

                if(dgShow.CurrentPageIndex!=0)

                    dgShow.CurrentPageIndex = dgShow.CurrentPageIndex-1;

            }

            string strSql = "delete from tbStudentinfo where studentid="+e.Item.Cells[0].Text+"";

            ExecuteSql(strSql);

        ////////////////////////////////////////////////////////////

        //說明：執行制定SQL語句/////////////////////////////////////

        ///////////////////////////////////////////////////////////

        private void ExecuteSql(string strSql)

            try

                string strconn = System.Configuration.ConfigurationSettings.AppSettings["DSN"];//從Web.config中讀取

                SqlConnection conn =new SqlConnection(strconn);

                SqlCommand com = new SqlCommand(strSql,conn);

                conn.Open();

                com.ExecuteNonQuery();

                conn.Close();

            } 

            catch(Exception e)

                Response.Write("<script language = 'javascript'>alert('"+e.Message+"');</script>") ;

        private void dgShow_UpdateCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

            string strStudentID = e.Item.Cells[0].Text;//處于非編輯狀态

            string strName = ((TextBox)(e.Item.Cells[1].Controls[0])).Text;//處于編輯狀态

            string strPass =((TextBox)(e.Item.Cells[2].Controls[0])).Text;

            string strSex = ((CheckBox)(e.Item.Cells[3].FindControl("cbSex"))).Checked?"1":"0";

            string strBirthday =((TextBox)(e.Item.Cells[4].Controls[0])).Text;

            string strEmail =((TextBox)(e.Item.Cells[5].Controls[0])).Text;

            string strSql = "update tbStudentinfo set StudentName='"+strName+"',StudentPass='"+strPass+"'";

            strSql +=",Sex="+strSex+",Birthday='"+strBirthday+"',Email='"+strEmail+"' where studentid="+strStudentID+"";

        private void dgShow_ItemCreated(object sender, System.Web.UI.WebControls.DataGridItemEventArgs e)

            switch(e.Item.ItemType)

                case ListItemType.Item:

                case ListItemType.EditItem:

                case ListItemType.AlternatingItem:

                    Button       myDeleteButton = (Button)e.Item.FindControl("btnDelete");

                    myDeleteButton.Text = "删除此行";

                    myDeleteButton.Attributes.Add("onclick", "return confirm('您真的要删除第 " + e.Item.ItemIndex.ToString() + " 行嗎？');");

                    break;

        private void dgShow_ItemCommand(object source, System.Web.UI.WebControls.DataGridCommandEventArgs e)

            if(e.CommandName=="UserDelete")

                dgShow_DeleteCommand(source,e);

    }

}

前台代碼：html

<%@ Page language="c#" Codebehind="UserDelete.aspx.cs" AutoEventWireup="false" Inherits="MsDataGrid.UserDelete" %>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" >

<HTML>

    <HEAD>

        <title>DataGrid使用舉例</title>

        <meta name="GENERATOR" Content="Microsoft Visual Studio 7.0">

        <meta name="CODE_LANGUAGE" Content="C#">

        <meta name="vs_defaultClientScript" content="JavaScript">

        <meta name="vs_targetSchema" content="http://schemas.microsoft.com/intellisense/ie5">

    </HEAD>

    <body MS_POSITIONING="GridLayout">

        <form id="Form1" method="post" runat="server">

            <FONT face="宋體">

                <asp:DataGrid id="dgShow" style="Z-INDEX: 101; LEFT: 69px; POSITION: absolute; TOP: 90px" runat="server" Width="842px" Height="172px" BorderColor="Tan" BorderWidth="1px" BackColor="LightGoldenrodYellow" CellPadding="2" GridLines="None" ForeColor="Black" AutoGenerateColumns="False" AllowPaging="True">

                    <SelectedItemStyle ForeColor="GhostWhite" BackColor="DarkSlateBlue"></SelectedItemStyle>

                    <AlternatingItemStyle BackColor="PaleGoldenrod"></AlternatingItemStyle>

                    <HeaderStyle Font-Bold="True" BackColor="Tan"></HeaderStyle>

                    <FooterStyle BackColor="Tan"></FooterStyle>

                    <Columns>

                        <asp:BoundColumn DataField="StudentID" ReadOnly="True" HeaderText="學生ID"></asp:BoundColumn>

                        <asp:BoundColumn DataField="StudentName" HeaderText="學生姓名"></asp:BoundColumn>

                        <asp:BoundColumn DataField="StudentPass" HeaderText="密碼"></asp:BoundColumn>

                        <asp:BoundColumn DataField="Sex" HeaderText="性别"></asp:BoundColumn>

                        <asp:BoundColumn DataField="Birthday" HeaderText="生日"></asp:BoundColumn>

                        <asp:BoundColumn DataField="Email" HeaderText="郵件位址"></asp:BoundColumn>

                        <asp:TemplateColumn HeaderText="性别模闆列">

                            <ItemTemplate>

                                <asp:RadioButton id=RadioButton2 runat="server" Text="男" Checked='<%# DataBinder.Eval(Container, "DataItem.Sex") %>' Enabled="False">

                                </asp:RadioButton>

                                <asp:RadioButton id=RadioButton1 runat="server" Text="女" Checked='<%# !(bool)DataBinder.Eval(Container, "DataItem.Sex") %>' Enabled="False">

                            </ItemTemplate>

                            <EditItemTemplate>

                                <asp:RadioButton id=cbSex runat="server" Text="男" Checked='<%# DataBinder.Eval(Container, "DataItem.Sex") %>' GroupName="Sex">

                                <asp:RadioButton id=RadioButton4 runat="server" Text="女" Checked='<%# !(bool)DataBinder.Eval(Container, "DataItem.Sex") %>' GroupName="Sex">

                            </EditItemTemplate>

                        </asp:TemplateColumn>

                        <asp:ButtonColumn Text="選擇" HeaderText="選擇" CommandName="Select"></asp:ButtonColumn>

                        <asp:EditCommandColumn ButtonType="LinkButton" UpdateText="更新" HeaderText="操作" CancelText="取消" EditText="編輯"></asp:EditCommandColumn>

                        <asp:ButtonColumn Text="删除" HeaderText="删除" CommandName="Delete"></asp:ButtonColumn>

                        <asp:TemplateColumn HeaderText="自定義删除">

                                <asp:Button id="btnDelete" runat="server" CommandName="UserDelete" Text="删除"></asp:Button>

                        <asp:HyperLinkColumn Text="點選檢視" DataNavigateUrlField="StudentID" DataNavigateUrlFormatString="Show.aspx?ID={0}" DataTextField="StudentName" HeaderText="詳細資訊"></asp:HyperLinkColumn>

                    </Columns>

                    <PagerStyle HorizontalAlign="Center" ForeColor="DarkSlateBlue" BackColor="PaleGoldenrod"></PagerStyle>

                </asp:DataGrid></FONT>

        </form>

    </body>

</HTML>

本文轉自高海東部落格園部落格，原文連結：http://www.cnblogs.com/ghd258/archive/2005/10/12/253218.html，如需轉載請自行聯系原作者