ASP.NET中防止页面多次提交的代码实现
此处提供的代码用来实现当asp.net页面中的某个Button被点击后disable掉该页面中所有的Button,从而防止提交延时导致的多次提交。基于之前的onceclickbutton脚本.
//ASP.NET中防止页面多次提交的代码:javascript< script language="javascript"> < !-- function disableOtherSubmit() {
var obj = event.srcElement;
var objs = document.getElementsByTagName('INPUT');
for(var i=0; i< objs.length; i++)
{
if(objs[i].type.toLowerCase() == 'submit')
{
objs[i].disabled = true;
}
}
} //--> < /script>//ASP.NET中防止页面多次提交的代码:asp.netpublic class PreventMultiClick : System.Web.UI.Page {
protected System.Web.UI.WebControls.Button Button1; protected System.Web.UI.WebControls.Button Button2;
protected System.Web.UI.WebControls.LinkButton LinkButton1; protected System.Web.UI.WebControls.Button Button3; private void Page_Load(object sender, System.EventArgs e)
{
this.GetPostBackEventReference(this.Button3);
//保证 __doPostBack(eventTarget, eventArgument) 正确注册 if(!IsPostBack)
{
System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append("if (typeof(Page_ClientValidate) == 'function')
{
if (Page_ClientValidate() == false)
{
return false;
}
}"); //保证验证函数的执行 sb.Append("if(window.confirm('are you sure?')==false) return false; ");
//自定义客户端脚本 sb.Append("disableOtherSubmit(); ");
// disable所有submit按钮 sb.Append(this.GetPostBackEventReference(this.Button3));
//用__doPostBack来提交,保证按钮的服务器端click事件执行 sb.Append("; ");
Button3.Attributes.Add("onclick",sb.ToString());
}
} #region Web Form Designer generated code override protected void OnInit(EventArgs e)
{
// // CODEGEN: This call is required by the ASP.NET Web Form Designer. // InitializeComponent();
base.OnInit(e);
}
/// < summary> /// Required method for Designer support - do not modify /// the contents of this method with the code editor. /// < /summary> private void InitializeComponent()
{
this.Butto
相关文档:
//使用验证方法
if (!InputValidator(txt.Text.Trim()))
{
ScriptManager.RegisterStartupScript(this.Page, this.GetType(), "myScript", "alert('\"文本框\"输入了非法字符或输入超长!');", t ......
treeview.aspx中代码如下:
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="treeview.aspx.cs" Inherits="treeview" %>
<!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 ......
ASP.Net 1.1 没有.Net2.0提供的FileUpload控件,需要添加一个type为file的html input控件,然后再写一个
独立的upload button。实例如下:
1. HTML
<input id="txtAttch" type="file" runat="server">
<br>
<input id="cmdUpload" type="button" value="Upload" runat="server">
2. Server ......
aspx页面
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="customin.aspx.cs" Inherits="kf_customin" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd" ......
如果你已经有较多的面向对象开发经验,跳过以下这两步:
第一步 掌握一门.NET面向对象语言,C#或VB.NET 我强烈反对在没系统学过一门面向对象(OO)语言的前提下去学ASP.NET。 ASP.NET是一个全面向对象的技术,不懂OO,那绝对学不下去!
第二步 对.NET Framework类库有一定的了解 可以通过开发Windows Form应用程 ......