C#禁止重复提交

1:连续2次提交

Button1.Attributes.Add("onclick",   "this.value='正在提交中，请等待……';this.disabled=true;"   +   this.GetPostBackEventReference(Button1));

2:刷新提交：

Response.Write(" <script   language=javascript> alert( '采购成功 ');window.location.href=window.location.href; </script> ");

 

也可以做成自定义控件：

   /**//// <summary>

    /// 只能提交一次的按钮

    /// </summary>

    public class ButtonSubmitOnce : Button

    {

        private string _textonclick = "处理中，请稍后。。。";

        private string _clientcheck;

 

        protected override void Render(HtmlTextWriter writer)

        {

            StringBuilder temp = new StringBuilder();

 

            temp.Append(this.OnClientClick);

 

            if (!string.IsNullOrEmpty(_clientcheck)) temp.Append("if(!").Append(_clientcheck).Append(") return false;");

 

            if (!string.IsNullOrEmpty(_textonclick)) temp.Append("this.value=\"").Append(_textonclick).Append("\";");

 

            //this is for the ff

            temp.Append("if(null==window.onunload) window.onunload = function(){};");

 

            temp.Append("this.disabled = true;").Append(Page.GetPostBackEventReference(this));

 

            this.OnClientClick = temp.ToString();

 

            base.Render(writer);

        }

 

        public string TextOnClick

        {

            set { _textonclick = value; }

        }

 

        public string ClientCheck

        {

            set { _clientcheck = value; }

        }

    }