GridView控件修改、删除示例（修改含有DropDownList控件）

GridView控件修改、删除例子，修改时含有DropDownList控件。
示例运行效果图：

GridViewUp.aspx文件代码：

<% @PageLanguage = " C# " AutoEventWireup = " true " CodeFile = " GridViewUp.aspx.cs " Inherits = " gridview_GridViewUp " %>

<! DOCTYPEhtmlPUBLIC"-//W3C//DTDXHTML1.0Transitional//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 >
< table cellpadding ="0" cellspacing ="0" border ="0" width ="80%" style ="font-size:11px" >
< tr >
< td align ="center" >
< asp:GridView ID ="GridView1" runat ="server" Width ="100%" CellPadding ="4" ForeColor ="#333333"
AutoGenerateColumns ="False" AllowPaging ="True" PageSize ="12" OnRowCancelingEdit ="GridView1_RowCancelingEdit"
OnRowEditing ="GridView1_RowEditing" OnRowUpdating ="GridView1_RowUpdating" OnRowDeleting ="GridView1_RowDeleting"
DataKeyNames ="id,name" OnPageIndexChanging ="GridView1_PageIndexChanging" DataMember ="card,price" OnRowDataBound ="GridView1_RowDataBound" GridLines ="None" >
< Columns >
< asp:BoundField HeaderText ="编号" DataField ="id" ReadOnly ="True" />
< asp:BoundField DataField ="name" HeaderText ="姓名" ReadOnly ="True" />
< asp:TemplateField HeaderText ="身份证号" >
< ItemTemplate >
<% # Eval ( " card " ) %>
</ ItemTemplate >
< EditItemTemplate >
< asp:TextBox ID ="TBCard" Text ='<%# Eval("card")% > 'runat="server"Width="140px"/>
</ EditItemTemplate >
< ItemStyle Width ="150px" />
</ asp:TemplateField >
< asp:TemplateField HeaderText ="学历" >
< ItemTemplate >
<% # Eval ( " xueliText " ) %>
</ ItemTemplate >
< EditItemTemplate >
< asp:HiddenField ID ="HDFXueli" runat ="server" Value ='<%# Eval("xueli")% > '/>
< asp:DropDownList ID ="DDLXueli" runat ="server" Width ="90px" />
</ EditItemTemplate >
< ItemStyle Width ="100px" />
</ asp:TemplateField >
< asp:TemplateField HeaderText ="价格" >
< ItemTemplate >
<% # Eval ( " price " ) %>
</ ItemTemplate >
< EditItemTemplate >
< asp:TextBox ID ="TBPrice" Text ='<%# Eval("price")% > 'runat="server"Width="90px"/>
</ EditItemTemplate >
< ItemStyle Width ="100px" />
</ asp:TemplateField >
< asp:BoundField HeaderText ="建立时间" DataField ="createdate" ReadOnly ="True" />
< asp:CommandField ShowDeleteButton ="True" ShowEditButton ="True" HeaderText ="操作" />
</ Columns >
< PagerSettings FirstPageText ="" LastPageText ="" NextPageText ="" PreviousPageText ="" />
< RowStyle Height ="20px" BackColor ="#F7F6F3" ForeColor ="#333333" />
< FooterStyle BackColor ="#5D7B9D" Font-Bold ="True" ForeColor ="White" />
< EditRowStyle BackColor ="#999999" />
< SelectedRowStyle BackColor ="#E2DED6" Font-Bold ="True" ForeColor ="#333333" />
< PagerStyle BackColor ="#284775" ForeColor ="White" HorizontalAlign ="Center" />
< HeaderStyle BackColor ="#5D7B9D" Font-Bold ="True" ForeColor ="White" />
< AlternatingRowStyle BackColor ="White" ForeColor ="#284775" />
</ asp:GridView >
</ td >
</ tr >
</ table >
</ div >
</ form >
</ body >
</ html >

GridViewUp.aspx.cs文件代码：

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 gridview_GridViewUp:System.Web.UI.Page
{
protected void Page_Load( object sender,EventArgse)
{
if ( ! IsPostBack)
{
GridViewBind();
}
}

protected void GridView1_PageIndexChanging( object sender,GridViewPageEventArgse)
{
GridView1.PageIndex = e.NewPageIndex;
GridViewBind();
}

private void GridViewBind()
{
string connStr = ConfigurationManager.ConnectionStrings[ " ConnString " ].ConnectionString;
string SqlStr = " SELECT*,casexueliwhen'1'then'博士'when'2'then'硕士'when'3'then'学士'else''endasxueliTextFROMtest01whereid<1000andid>200 " ;
DataSetds = new DataSet();

try
{
SqlConnectionconn = new SqlConnection(connStr);
if (conn.State.ToString() == " Closed " )conn.Open();
SqlDataAdapterda = new SqlDataAdapter(SqlStr,conn);
da.Fill(ds, " test01 " );
if (conn.State.ToString() == " Open " )conn.Close();

GridView1.DataSource = ds.Tables[ 0 ].DefaultView;
GridView1.DataBind();
}
catch (Exceptionex)
{
Response.Write( " 数据库错误，错误原因： " + ex.Message);
Response.End();
}
}

protected void GridView1_RowDataBound( object sender,GridViewRowEventArgse)
{
if (((DropDownList)e.Row.FindControl( " DDLXueli " )) != null )
{
DropDownListddlxueli = (DropDownList)e.Row.FindControl( " DDLXueli " );

// 生成DropDownList的值，也可以取得数据库中的数据绑定
ddlxueli.Items.Clear();
ddlxueli.Items.Add( new ListItem( " 博士 " , " 1 " ));
ddlxueli.Items.Add( new ListItem( " 硕士 " , " 2 " ));
ddlxueli.Items.Add( new ListItem( " 学士 " , " 3 " ));
//

// 选中DropDownList
ddlxueli.SelectedValue = ((HiddenField)e.Row.FindControl( " HDFXueli " )).Value;
//
}
}

protected void GridView1_RowEditing( object sender,GridViewEditEventArgse)
{
GridView1.EditIndex = e.NewEditIndex;
GridViewBind();
}
protected void GridView1_RowCancelingEdit( object sender,GridViewCancelEditEventArgse)
{
GridView1.EditIndex = - 1 ;
GridViewBind();
}

protected void GridView1_RowUpdating( object sender,GridViewUpdateEventArgse)
{
string id = GridView1.DataKeys[e.RowIndex].Values[ 0 ].ToString();
string card = ((TextBox)GridView1.Rows[e.RowIndex].FindControl( " TBCard " )).Text;
string xueli = ((DropDownList)GridView1.Rows[e.RowIndex].FindControl( " DDLXueli " )).SelectedValue;
string price = ((TextBox)GridView1.Rows[e.RowIndex].FindControl( " TBPrice " )).Text;

string connStr = ConfigurationManager.ConnectionStrings[ " ConnString " ].ConnectionString;
string SqlStr = " updatetest01setcard=' " + card + " ',xueli=' " + xueli + " ',price=' " + price + " 'whereid= " + id;

try
{
SqlConnectionconn = new SqlConnection(connStr);
if (conn.State.ToString() == " Closed " )conn.Open();
SqlCommandcomm = new SqlCommand(SqlStr,conn);
comm.ExecuteNonQuery();
comm.Dispose();
if (conn.State.ToString() == " Open " )conn.Close();

GridView1.EditIndex = - 1 ;
GridViewBind();
}
catch (Exceptionex)
{
Response.Write( " 数据库错误，错误原因： " + ex.Message);
Response.End();
}
}

protected void GridView1_RowDeleting( object sender,GridViewDeleteEventArgse)
{
string id = GridView1.DataKeys[e.RowIndex].Values[ 0 ].ToString();
string connStr = ConfigurationManager.ConnectionStrings[ " ConnString " ].ConnectionString;
string SqlStr = " deletefromtest01whereid= " + id;

try
{
SqlConnectionconn = new SqlConnection(connStr);
if (conn.State.ToString() == " Closed " )conn.Open();
SqlCommandcomm = new SqlCommand(SqlStr,conn);
comm.ExecuteNonQuery();
comm.Dispose();
if (conn.State.ToString() == " Open " )conn.Close();

GridView1.EditIndex = - 1 ;
GridViewBind();
}
catch (Exceptionex)
{
Response.Write( " 数据库错误，错误原因： " + ex.Message);
Response.End();
}
}
}

sql server2000生成表代码：

CREATE TABLE [ dbo ] . [ test01 ] (
[ id ] [ decimal ] ( 18 , 0 ) IDENTITY ( 1 , 1 ) NOT NULL ,
[ name ] [ varchar ] ( 50 )COLLATEChinese_PRC_CI_AS NULL ,
[ card ] [ varchar ] ( 50 )COLLATEChinese_PRC_CI_AS NULL ,
[ xueli ] [ varchar ] ( 50 )COLLATEChinese_PRC_CI_AS NULL ,
[ price ] [ decimal ] ( 18 , 0 ) NULL ,
[ createdate ] [ datetime ] NULL
) ON [ PRIMARY ]
GO

ALTER TABLE [ dbo ] . [ test01 ] ADD
CONSTRAINT [ DF_test01_createdate ] DEFAULT ( getdate ()) FOR [ createdate ] ,
CONSTRAINT [ PK_test01 ] PRIMARY KEY CLUSTERED
(
[ id ]
) ON [ PRIMARY ]
GO