防止按钮多次提交

                在asp.net中防止按钮多次点击提交的办法!  
                                          为提交button 加上下面的属性:

 

                                                        System.Text.StringBuilder sb = new System.Text.StringBuilder();

                sb.Append("if (typeof(Page_ClientValidate) == 'function') { ");

                sb.Append("if (Page_ClientValidate() == false) { return false; }} ");

                sb.AppendFormat("this.value = '{0}';", this.waitText);

                sb.Append("this.disabled = true;");

                sb.Append(this.Page.GetPostBackEventReference(this));

                sb.Append(";");

                this.Attributes["onclick"] = sb.ToString();    

                如果页面上没有校验控件. 可以直接用下面的: