Server Error in '/' Application.

System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.ArgumentNullException: String reference not set to an instance of a String.
Parameter name: s
  at System.Text.Encoding.GetBytes(String s)
  at GetBBS.Rules.Des.Encrypt(String pToEncrypt, String sKey)
  at Forum.GetNameByDomain(String Password, String Domain)
  --- End of inner exception stack trace ---

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.Web.Services.Protocols.SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.ArgumentNullException: String reference not set to an instance of a String.
Parameter name: s
  at System.Text.Encoding.GetBytes(String s)
  at GetBBS.Rules.Des.Encrypt(String pToEncrypt, String sKey)
  at Forum.GetNameByDomain(String Password, String Domain)
  --- End of inner exception stack trace ---

Source Error:



An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.

Stack Trace:


[SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.ArgumentNullException: String reference not set to an instance of a String.
Parameter name: s
   at System.Text.Encoding.GetBytes(String s)
   at GetBBS.Rules.Des.Encrypt(String pToEncrypt, String sKey)
   at Forum.GetNameByDomain(String Password, String Domain)
   --- End of inner exception stack trace ---]
   System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +551452
   System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +204
   com.getbbs.free.Forum.GetNameByDomain(String Password, String Domain) +63
   GetBBS.Web.All_Default.DomainService() +3926
   GetBBS.Web.All_Default.Page_Load(Object sender, EventArgs e) +5
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +15
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +33
   System.Web.UI.Control.OnLoad(EventArgs e) +99
   System.Web.UI.Control.LoadRecursive() +47
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1436

Version Information: Microsoft .NET Framework Version:2.0.50727.1433; ASP.NET Version:2.0.50727.1433