ASP.NET---GridView应用（二）

2.GridView选中，编辑，取消，删除：

效果图：

后台代码：

你可以使用sqlhelper,本文没用。代码如下：

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

{

//清清月儿 http://blog.csdn.net/21aspnet

   SqlConnection sqlcon;

   SqlCommand sqlcom;

   string strCon = "Data Source=(local);Database=数据库名;Uid=帐号;Pwd=密码";

   protected void Page_Load(object sender, EventArgs e)

   {

       if (!IsPostBack)

       {

           bind();

       }

   }

   protected void GridView1_RowEditing(object sender, GridViewEditEventArgs e)

   {

       GridView1.EditIndex = e.NewEditIndex;

       bind();

   }

//删除

   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 字段1='"

           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[1].Controls[0])).Text.ToString().Trim() + "',字段2='"

           + ((TextBox)(GridView1.Rows[e.RowIndex].Cells[2].Controls[0])).Text.ToString().Trim() + "',字段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();

   }

//绑定

   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" };//主键

       GridView1.DataBind();

       sqlcon.Close();

   }

}

前台主要代码：

                           ... ...

<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="身份证号码" HeaderText="用户ID" ReadOnly="True" />

                           <asp:BoundField DataField="姓名" HeaderText="用户姓名" />

                           <asp:BoundField DataField="员工性别" HeaderText="性别" />

                           <asp:BoundField DataField="家庭住址" HeaderText="家庭住址" />

                           <asp:CommandField HeaderText="选择" ShowSelectButton="True" />

                           <asp:CommandField HeaderText="编辑" ShowEditButton="True" />

                           <asp:CommandField HeaderText="删除" 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>