Click button only once in asp.net 2.0

my solution as follows:

 1 protected void Page_Load(object sender, EventArgs e)
 2     {
 3         PostBackOptions options = new PostBackOptions(Button1,string.Empty);
 4 
 5         StringBuilder sb = new StringBuilder();
 6         if (Button1.CausesValidation && this.GetValidators(Button1.ValidationGroup).Count > 0)
 7         {
 8             options.ClientSubmit = true;
 9             options.PerformValidation = true;
10             options.ValidationGroup = Button1.ValidationGroup;
11 
12             sb.Append("if (typeof(Page_ClientValidate) == 'function')");
13             sb.Append("if(Page_ClientValidate(\"" + Button1.ValidationGroup + "\")==false) return false;");
14         }
15         if (!string.IsNullOrEmpty(Button1.PostBackUrl))
16             options.ActionUrl = HttpUtility.UrlPathEncode(Button1.ResolveClientUrl(Button1.PostBackUrl));
17         
18         sb.Append("this.disabled = true;");
19         sb.Append(ClientScript.GetPostBackEventReference(options));
20         sb.Append(";");
21         Button1.Attributes.Add("onclick", sb.ToString());
22     }

Is this one work well in your project?
waiting for your comment, and share your experience with me on this topic is appreciated.