How to prevent the user from clicking on a button more than once.

[mike55]

Hi all

 

I am looking for code that will prevent the user from clicking on a particular button more than once. I got some C# code that is suppose to work. I converted this code into vb.net:

Dim sb As New System.Text.StringBuilder

sb.Append("if (typeof(Page_ClientValidate) == 'function') { ")
sb.Append("if (Page_ClientValidate() == false) { return false; }} ")
sb.Append("this.value = 'Please wait...';")
sb.Append("this.disabled = true;")
sb.Append(ClientScript.GetPostBackEventReference(Button1))

sb.Append(";")
Button1.Attributes.Add("onclick", sb.ToString())

 

The problem that I am getting is: "Value of type System.Web.UI.WebControl.Button cannot be converted into System.Web.UI.PostBackOptions". I am using the .net 2005 professional environment. Am suggestions for this problem?

 

Mike55.

[PlausiblyDamp]

What did the original C# code look like?

[mike55]

What did the original C# code look like?

 

System.Text.StringBuilder sb = new System.Text.StringBuilder();
sb.Append("if (typeof(Page_ClientValidate) == 'function') { ");
sb.Append("if (Page_ClientValidate() == false) { return false; }} ");
sb.Append("this.value = 'Please wait...';");
sb.Append("this.disabled = true;");
sb.Append(this.Page.GetPostBackEventReference(this.Button1));
sb.Append(";");
this.Button1.Attributes.Add("onclick", sb.ToString());

 

I had to change the page.getpostbackeventreference to clientscript.getpostbackeventreference as .net 05 kept telling me there was an error.

 

A web site that I came across suggested using the following:

System.Threading.Thread.Sleep(2000)

However you have no way of knowing how long the sleep will have to be for.

 

Mike55.

[mike55]

It would seem that the solution to my problem is to leave the line: this.page.getpostbackeventreference(this.button1) as it is and not change is to this.clientscript.getpostbackeventreference(this.button1) as .net 05 wants.

 

Mike55.