Server Error in '/' Application.

Input string was not in a correct format.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.FormatException: Input string was not in a correct format.

Source Error:

Line 30:         {
Line 31:             //txtcount.Text = "1";
Line 32:             int id = int.Parse(Request.QueryString["id"].ToString());
Line 33:             prodids = id.ToString();
Line 34:             GetProdDetail(id);

Source File: d:\Program Files\woot\tokei123biz\brandgoods.aspx.cs    Line: 32

Stack Trace:

[FormatException: Input string was not in a correct format.]
   System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal) +9593643
   System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info) +119
   System.Int32.Parse(String s) +23
   brandgoods.Page_Load(Object sender, EventArgs e) in d:\Program Files\woot\tokei123biz\brandgoods.aspx.cs:32
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnLoad(EventArgs e) +91
   System.Web.UI.Control.LoadRecursive() +74
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2207

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1031