項目中遇到這個問題,因為按鈕提交執行需要五到八秒,容易使用戶誤認為沒有提交成功,導致多次點擊按鈕提交,最后導致出錯。在網上找了下資料, 有的說不用服務器控件,或者自定義類,繼承Button基類等等其他方法,終於找到了如下比較簡單的解決方法。演示代碼如下:
前台aspx頁面
<%
@ Page Language
=
"
C#
"
AutoEventWireup
=
"
true
"
CodeBehind
=
"
Default.aspx.cs
"
Inherits
=
"
buttonsubmit._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 >無標題頁 </ title >
< script language ="javascript" type ="text/javascript" >
function abc(object1)
{
object1.disabled=true; // 變灰
__doPostBack(object1.name , "" ); // 執行服務器端button1的click事件 這里特別要注意是
</ script >
</ head >
< body >
< form id ="form1" runat ="server" >
< div >
< asp:TextBox id = "TextBox1" style = "Z-INDEX:101;LEFT:8px;POSITION:absolute;TOP:8px " runat = "server" >1 </ asp:TextBox >
< asp:Button id = "Button1"
style = "Z-INDEX:102;LEFT:8px;POSITION:absolute;TOP:40px " runat = "server"
Text ="Button" onclick ="Button1_Click" ></ asp:Button >
</ div >
</ form >
</ 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 >無標題頁 </ title >
< script language ="javascript" type ="text/javascript" >
function abc(object1)
{
object1.disabled=true; // 變灰
__doPostBack(object1.name , "" ); // 執行服務器端button1的click事件 這里特別要注意是
object1.name 而不能是
object1.id, 因為頁面可能含有母版頁
} </ script >
</ head >
< body >
< form id ="form1" runat ="server" >
< div >
< asp:TextBox id = "TextBox1" style = "Z-INDEX:101;LEFT:8px;POSITION:absolute;TOP:8px " runat = "server" >1 </ asp:TextBox >
< asp:Button id = "Button1"
style = "Z-INDEX:102;LEFT:8px;POSITION:absolute;TOP:40px " runat = "server"
Text ="Button" onclick ="Button1_Click" ></ asp:Button >
</ div >
</ form >
</ body >
</ html >
后台cs文件:
using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
namespace buttonsubmit
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load( object sender, EventArgs e)
{
// 在此處放置用戶代碼以初始化頁面
Page.ClientScript.GetPostBackEventReference(Button1,null); // 這句很關鍵,有這句才能讓客戶端執行服務器端事件。
Button1.Attributes.Add( " onclick ", " abc(this); ");
}
protected void Button1_Click( object sender, EventArgs e)
{
int k = 0;
for ( int i = 0; i < 99999; i++)
{
for ( int j = 0; j < 9999; j++)
k = 9;
}
this.TextBox1.Text = " 2 ";
}
}
}
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
namespace buttonsubmit
{
public partial class _Default : System.Web.UI.Page
{
protected void Page_Load( object sender, EventArgs e)
{
// 在此處放置用戶代碼以初始化頁面
Page.ClientScript.GetPostBackEventReference(Button1,null); // 這句很關鍵,有這句才能讓客戶端執行服務器端事件。
Button1.Attributes.Add( " onclick ", " abc(this); ");
}
protected void Button1_Click( object sender, EventArgs e)
{
int k = 0;
for ( int i = 0; i < 99999; i++)
{
for ( int j = 0; j < 9999; j++)
k = 9;
}
this.TextBox1.Text = " 2 ";
}
}
}
需要說明的是刷新頁面是否會造成重復提交沒有去試驗,有興趣和時間的朋友可以研究一下。