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分享ImageButton引发js事件为什么pagelode走两遍！加分到结贴！
Imagebutton为什么会发生这样的事情！有明白这个控件的请说说原因吗、，最好详细一些，如若满意，还要加分！
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Go 旅城通票 2007-09-17
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isposback是判断是否正在向客户端发送信息.你点imagebutton返回时肯定执行一次page_load啊.
你在page_load中要加上
if(!Page.IsPostBack)//从客户端返回
{}
else//返回客户端
{}
而且要检查你的<%@ Page%>指令中是否禁止了ViewState
你在page_load中要加上
if(!Page.IsPostBack)//从客户端返回
{}
else//返回客户端
{}
而且要检查你的<%@ Page%>指令中是否禁止了ViewState
qiuming0306 2007-09-17
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补充：我没有表述清楚，就是第二次最后加载的时候isposback还是true，重新加载，存不住控件的值，而用其他控件就没有此问题！
elvis_gao 2007-09-17
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qiuming0306 ,我解决出来了，你粘上来的程序一点毛病没有，你重新建个环境，或重新编译下，就好了，这种毛病经常是由于控件的属性误用造成的，如background，bgcolor的误用。
qiuming0306 2007-09-17
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<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!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>Untitled Page</title>
<script language="javascript">
function test()
{
debugger
document.getElementById("Button1").click();
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"> </asp:TextBox>
<asp:ImageButton ID="ImageButton1" OnClientClick="return test()" runat="server" />
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>
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)
{
if (!IsPostBack)
{
//string sss = TextBox1.Text;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
TextBox1.Text = "ok";
}
}
</body>
</html>
<!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>Untitled Page</title>
<script language="javascript">
function test()
{
debugger
document.getElementById("Button1").click();
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox ID="TextBox1" runat="server"> </asp:TextBox>
<asp:ImageButton ID="ImageButton1" OnClientClick="return test()" runat="server" />
<asp:Button ID="Button1" runat="server" Text="Button" OnClick="Button1_Click" />
</div>
</form>
</body>
</html>
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)
{
if (!IsPostBack)
{
//string sss = TextBox1.Text;
}
}
protected void Button1_Click(object sender, EventArgs e)
{
TextBox1.Text = "ok";
}
}
</body>
</html>
