ASP.NET中防止页面多次提交的代码实现

前端代码:

<script type ="text/javascript">

function disableotherButton()

{

var obj = event.srcElement;

var objs = document.getElementTagByName("input");

for (i=0; i<objs.lenths;i++)

{

if(objs[i].type.ToLowerCase()="submit")

{

objs[i].disabled = true;

}

}

}

</script>
***后台代码
public 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.Button3.Click += new System.EventHandler(this.Button3_Click); this.Load += new System.EventHandler(this.Page_Load);
}
#endregion

private void Button3_Click(object sender, System.EventArgs e)
{
System.Threading.Thread.Sleep(3000);
Response.Write("Hello world!");
}
}