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 HrBase;
using MyCompControls;
using Meta.Web.Controls;
using HrSSystem;
public partial class WebUI_Sysmg_Log : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
Button mybtn = (Button)Page.Master.FindControl("Button1");
if (mybtn!=null)
mybtn.Click += new EventHandler(test);
} protected void test(object sender, EventArgs e)
{
this.Response.Write("<script language=javascript>alert('当前用户无权操作!')</script>");
}
}
我这样设,点击母版页上的按钮没反应.控件找到了的,在内容页中设属比如text可以发现有改变,但事件不行,请大家帮忙
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 HrBase;
using MyCompControls;
using Meta.Web.Controls;
using HrSSystem;
public partial class WebUI_Sysmg_Log : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
Button mybtn = (Button)Page.Master.FindControl("Button1");
if (mybtn!=null)
mybtn.Click += new EventHandler(test);
} protected void test(object sender, EventArgs e)
{
this.Response.Write("<script language=javascript>alert('当前用户无权操作!')</script>");
}
}
我这样设,点击母版页上的按钮没反应.控件找到了的,在内容页中设属比如text可以发现有改变,但事件不行,请大家帮忙
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上面这行也放到Page_Load里,例如:
protected void Page_Load(object sender, EventArgs e)
{
Button1.Click += delegate { this.Response.Write(" <script language=javascript>alert('当前用户无权操作!') </script>"); };
}
我这样打只是为了便于理解,其实那个处理方法要完成很多功能,我只是随便copy一行作测试而也,不过还是谢谢.
按你的写法
异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。
你这行给的是值不是指针
若说控件是否加载,这有影响吗?事件不可以也看成一种方法属性么? if (!Page.IsPostBack)
{
Button mybtn = (Button)Page.Master.FindControl("Button1");
if (mybtn!=null)
//mybtn.Click += new EventHandler(test);
mybtn.text="aa";
}
这样就能行.呵.
晕死我了,难为了我两三天了
{
ContentPlaceHolder cp = (ContentPlaceHolder)Page.Master.FindControl("ContentPlaceHolder1");
if (cp != null)
{
Button btn = (Button)cp.FindControl("Button1");
btn.Click += delegate { this.Response.Write(" <script language=javascript>alert('当前用户无权操作!') </script>"); };
}
}
那应该怎么做啊.谢谢了啊.
把查找到的控件赋给变量不就是把指针赋于变量么?
不行,ContentPlaceHolder在母版页时只是一个占位符,对母版页中放入的控件根本就只放在mastpage中,若在内容页在放,我又为何还要查找呢?
你的方法是从母版页中调内容页的控件事件.我要的是从内容页中调母版页的控件事件.
<%@ 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><asp:Button ID="Button2" runat="server" Text="Button" />
<asp:contentplaceholder id="ContentPlaceHolder1" runat="server">
<asp:Button ID="Button1" runat="server" Text="Button" /></asp:contentplaceholder>
</div>
</form>
</body>
</html>子页面:
<%@ Page Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" Title="Untitled Page" %>子页面的代码:
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 _Default : System.Web.UI.Page
{
protected void test(object sender, EventArgs e)
{
this.Response.Write(" <script language=javascript>alert('当前用户无权操作!') </script>");
} protected void Page_Load(object sender, EventArgs e)
{
Button btn2 = (Button)Page.Master.FindControl("Button2");
if (btn2 != null)
btn2.Click += new EventHandler(test); ContentPlaceHolder cp = (ContentPlaceHolder)Page.Master.FindControl("ContentPlaceHolder1");
if (cp != null)
{
Button btn = (Button)cp.FindControl("Button1");
btn.Click += delegate { this.Response.Write(" <script language=javascript>alert('当前用户无权操作!') </script>"); };
}
}
}
母版页中:
protected void btnSeachMain_Click(object sender, EventArgs e)
{
//空事件
}内容页中:
private void funSetMasterCallBackEvents()
{
//母版回调事件 不改动 必须有btnSeachChildMain按钮
#region
Control ctltmp = null;
Button btnTmp = null; ctltmp = null;
ctltmp = Page.Master.FindControl("btnSeachMain");
if (ctltmp != null)
{
btnTmp = (Button)ctltmp;
btnTmp.Click += new EventHandler(funSeachCallBackFunction);
}
#endregion
}
protected void funSeachCallBackFunction(object sender, EventArgs e)
{
//回调后的查询
#region
//其它代码
#endregion
}
后来我处理也简单.哈哈.
把事件类托代码放在page_init中就行了.哈