ASP.NET中防止页面多次提交的代码实现

最新推荐文章于 2025-12-10 11:43:56 发布

原创最新推荐文章于 2025-12-10 11:43:56 发布 · 838 阅读

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#asp.net #button #function #object #input #服务器

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本文介绍了一种前端和后端结合的方法来防止用户重复提交表单。通过禁用已点击的提交按钮，并利用服务器端代码确保即使用户多次点击同一按钮，也只触发一次事件。

前端代码:

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!");
}
}