在Master母版页中通过FindControl()方法获取服务器控件
2008-09-09 21:42
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一、服务器控件与代码都位于母版页
1、Master母版页
（1）Html代码
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<table style="width: 734px">
<tr>
<td>
<img src="../img/biaotou_fin3_01.jpg" /></td>
</tr>
<tr>
<td>
<asp:TextBox ID="TextBox1" runat="server" BackColor="#E0E0E0">母版页文本框文本内容</asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="母版页按钮" /></td>
</tr>
<tr>
<td>
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</td>
</tr>
<tr>
<td>
<img src="../img/biaotou_fin3_btm.jpg" /></td>
</tr>
</table>
<br />
</div>
</form>
</body>
</html>
（2）C#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;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Write("<script language=javascript>window.alert('" + TextBox1.Text + "')</script>");
TextBox tb1 = (TextBox)FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('FindControl()获取：" + tb1.Text + "')</script>");
/*以下用法错误：
*TextBox tb2 = (TextBox)Master.FindControl("TextBox1");
*Response.Write("<script language=javascript>window.alert('" + tb2.Text + "')</script>");
*/
}
}
2、Content内容页
（1）Html代码
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="MasterPage.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat=server>
</asp:Content>
（2）C#代码
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
二、服务器控件与代码都位于内容页
1、Master母版页
（1）Html代码
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<table style="width: 734px">
<tr>
<td>
<img src="../img/biaotou_fin3_01.jpg" /></td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</td>
</tr>
<tr>
<td>
<img src="../img/biaotou_fin3_btm.jpg" /></td>
</tr>
</table>
<br />
</div>
</form>
</body>
</html>
（2）C#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;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
2、Content内容页
（1）Html代码
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="MasterPage.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat=server>
<asp:TextBox ID="TextBox1" runat="server">内容页文本框内容</asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="内容页按钮" />
</asp:Content>
（2）C#代码
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Write("<script language=javascript>window.alert('" + TextBox1.Text + "')</script>");
ContentPlaceHolder cpl1 = (ContentPlaceHolder)Master.FindControl("ContentPlaceHolder1");
TextBox tb1 = (TextBox)cpl1.FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('Master.FindControl()获取：" + tb1.Text + "')</script>");
//或者：
ContentPlaceHolder cpl2 = (ContentPlaceHolder)FindControl("ContentPlaceHolder1");
//在此FindControl()代表Master.FindControl()，在Master母版页中查找控件。
TextBox tb2= (TextBox)cpl1.FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('FindControl()获取：" + tb2.Text + "')</script>");
/*以下用法错误：
*TextBox tb1 = (TextBox)FindControl("TextBox1");
//在此FindControl()代表Master.FindControl()，在Master母版页中查找控件，而TextBox1在Content内容页中，所以找不到TextBox1控件
*Response.Write("<script language=javascript>window.alert('" + tb1.Text + "')</script>");
*/
}
}
三、服务器控件位于母版页，代码位于内容页
1、Master母版页
（1）Html代码
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<table style="width: 734px">
<tr>
<td>
<img src="../img/biaotou_fin3_01.jpg" /></td>
</tr>
<tr>
<td>
<asp:TextBox ID="TextBox1" runat="server" BackColor="#E0E0E0">母版页文本框内容</asp:TextBox></td>
</tr>
<tr>
<td>
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</td>
</tr>
<tr>
<td>
<img src="../img/biaotou_fin3_btm.jpg" /></td>
</tr>
</table>
<br />
</div>
</form>
</body>
</html>
（2）C#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;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
2、Content内容页
（1）Html代码
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="MasterPage.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat=server>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="内容页按钮" />
</asp:Content>
（2）C#代码
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
TextBox tb1 = (TextBox)Master.FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('" + tb1.Text + "')</script>");
}
}
四、服务器控件位于内容页，代码位于母版页
1、Master母版页
（1）Html代码
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<table style="width: 734px">
<tr>
<td>
<img src="../img/biaotou_fin3_01.jpg" /></td>
</tr>
<tr>
<td>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="母版页按钮" /></td>
</tr>
<tr>
<td>
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</td>
</tr>
<tr>
<td>
<img src="../img/biaotou_fin3_btm.jpg" /></td>
</tr>
</table>
<br />
</div>
</form>
</body>
</html>
（2）C#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;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
TextBox tb = (TextBox)ContentPlaceHolder1.FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('" + tb.Text + "')</script>");
/*错误的用法：
* Response.Write("<script language=javascript>window.alert('" + TextBox1.Text + "')</script>");
*/
}
}
2、Content内容页
（1）Html代码
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="MasterPage.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat=server>
<asp:TextBox ID="TextBox1" runat="server">内容页文本框内的文本</asp:TextBox>
</asp:Content>
（2）C#代码
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
1、Master母版页
（1）Html代码
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<table style="width: 734px">
<tr>
<td>
<img src="../img/biaotou_fin3_01.jpg" /></td>
</tr>
<tr>
<td>
<asp:TextBox ID="TextBox1" runat="server" BackColor="#E0E0E0">母版页文本框文本内容</asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="母版页按钮" /></td>
</tr>
<tr>
<td>
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</td>
</tr>
<tr>
<td>
<img src="../img/biaotou_fin3_btm.jpg" /></td>
</tr>
</table>
<br />
</div>
</form>
</body>
</html>
（2）C#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;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Write("<script language=javascript>window.alert('" + TextBox1.Text + "')</script>");
TextBox tb1 = (TextBox)FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('FindControl()获取：" + tb1.Text + "')</script>");
/*以下用法错误：
*TextBox tb2 = (TextBox)Master.FindControl("TextBox1");
*Response.Write("<script language=javascript>window.alert('" + tb2.Text + "')</script>");
*/
}
}
2、Content内容页
（1）Html代码
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="MasterPage.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat=server>
</asp:Content>
（2）C#代码
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
二、服务器控件与代码都位于内容页
1、Master母版页
（1）Html代码
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<table style="width: 734px">
<tr>
<td>
<img src="../img/biaotou_fin3_01.jpg" /></td>
</tr>
<tr>
<td>
</td>
</tr>
<tr>
<td>
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</td>
</tr>
<tr>
<td>
<img src="../img/biaotou_fin3_btm.jpg" /></td>
</tr>
</table>
<br />
</div>
</form>
</body>
</html>
（2）C#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;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
2、Content内容页
（1）Html代码
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="MasterPage.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat=server>
<asp:TextBox ID="TextBox1" runat="server">内容页文本框内容</asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="内容页按钮" />
</asp:Content>
（2）C#代码
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
Response.Write("<script language=javascript>window.alert('" + TextBox1.Text + "')</script>");
ContentPlaceHolder cpl1 = (ContentPlaceHolder)Master.FindControl("ContentPlaceHolder1");
TextBox tb1 = (TextBox)cpl1.FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('Master.FindControl()获取：" + tb1.Text + "')</script>");
//或者：
ContentPlaceHolder cpl2 = (ContentPlaceHolder)FindControl("ContentPlaceHolder1");
//在此FindControl()代表Master.FindControl()，在Master母版页中查找控件。
TextBox tb2= (TextBox)cpl1.FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('FindControl()获取：" + tb2.Text + "')</script>");
/*以下用法错误：
*TextBox tb1 = (TextBox)FindControl("TextBox1");
//在此FindControl()代表Master.FindControl()，在Master母版页中查找控件，而TextBox1在Content内容页中，所以找不到TextBox1控件
*Response.Write("<script language=javascript>window.alert('" + tb1.Text + "')</script>");
*/
}
}
三、服务器控件位于母版页，代码位于内容页
1、Master母版页
（1）Html代码
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<table style="width: 734px">
<tr>
<td>
<img src="../img/biaotou_fin3_01.jpg" /></td>
</tr>
<tr>
<td>
<asp:TextBox ID="TextBox1" runat="server" BackColor="#E0E0E0">母版页文本框内容</asp:TextBox></td>
</tr>
<tr>
<td>
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</td>
</tr>
<tr>
<td>
<img src="../img/biaotou_fin3_btm.jpg" /></td>
</tr>
</table>
<br />
</div>
</form>
</body>
</html>
（2）C#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;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
2、Content内容页
（1）Html代码
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="MasterPage.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat=server>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="内容页按钮" />
</asp:Content>
（2）C#代码
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
TextBox tb1 = (TextBox)Master.FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('" + tb1.Text + "')</script>");
}
}
四、服务器控件位于内容页，代码位于母版页
1、Master母版页
（1）Html代码
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="MasterPage.master.cs" Inherits="MasterPage" %>
<!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>
<table style="width: 734px">
<tr>
<td>
<img src="../img/biaotou_fin3_01.jpg" /></td>
</tr>
<tr>
<td>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="母版页按钮" /></td>
</tr>
<tr>
<td>
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
</asp:contentplaceholder>
</td>
</tr>
<tr>
<td>
<img src="../img/biaotou_fin3_btm.jpg" /></td>
</tr>
</table>
<br />
</div>
</form>
</body>
</html>
（2）C#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;
public partial class MasterPage : System.Web.UI.MasterPage
{
protected void Page_Load(object sender, EventArgs e)
{
}
protected void Button1_Click(object sender, EventArgs e)
{
TextBox tb = (TextBox)ContentPlaceHolder1.FindControl("TextBox1");
Response.Write("<script language=javascript>window.alert('" + tb.Text + "')</script>");
/*错误的用法：
* Response.Write("<script language=javascript>window.alert('" + TextBox1.Text + "')</script>");
*/
}
}
2、Content内容页
（1）Html代码
<%@ Page Language="C#" AutoEventWireup="true" MasterPageFile="MasterPage.master" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<asp:Content ID="content1" ContentPlaceHolderID="ContentPlaceHolder1" runat=server>
<asp:TextBox ID="TextBox1" runat="server">内容页文本框内的文本</asp:TextBox>
</asp:Content>
（2）C#代码
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;
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
}
}
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