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System.ArgumentException: Cannot convert System.ArgumentException:

Posted By:      Posted Date: April 10, 2011    Points: 0   Category :ADO.Net
 
System.ArgumentException: Cannot convert to System.Int32.
Parameter name: type ---> System.FormatException: Input string was not in a correct format.
  at System.Number.StringToNumber(String str, NumberStyles options, NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
  at System.Number.ParseInt32(String s, NumberStyles style, NumberFormatInfo info)
  at System.String.System.IConvertible.ToInt32(IFormatProvider provider)
  at System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider)
  at System.Web.Services.Protocols.ScalarFormatter.FromString(String value, Type type)
  --- End of inner exception stack trace ---
  at System.Web.Services.Protocols.ScalarFormatter.FromString(String value, Type type)
  at System.Web.Services.Protocols.ValueCollectionParameterReader.Read(NameValueCollection collection)
  at System.Web.Services.Protocols.HtmlFormParameterReader.Read(HttpRequest request)
  at System.Web.Services.Protocols.HttpServerProtocol.ReadParameters()
  at System.Web.Services.Protocols.WebServiceHandler.CoreProcessRequest()
this error giving . i don't know more about webservice . any body knows answer post here
my code is following

 

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