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DataBase broken. deadline in a few hours, specified cast is not valid. What do i do

Posted By:      Posted Date: April 10, 2011    Points: 0   Category :ASP.Net

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The following message may help in diagnosing the problem: Specified cast is not valid.


I'm not sure how it happened but after changing a column in my AccommodationComment table from memberId to username I tested it and all pages which have to do with selecting current user or any user says:


System.InvalidCastException was unhandled by user code
  Message=Specified cast is not valid.
       at System.Data.SqlClient.SqlBuffer.get_SqlGuid()
       at System.Data.SqlClient.SqlDataReader.GetGuid(Int32 i)
       at System.Web.Security.SqlMembershipProvider.GetUser(String username, Boolean userIsOnline)
       at System.Web.Security.Membership.GetUser(String username, Boolean userIsOnline)
       at System.Web.Security.Membership.GetUser()
       at Actions.getUse

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I am having problem, Please help me guys .....

these are the errors:

Server Error in '/FYPasp' Application.
Specified cast is not valid.
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.InvalidCastException: Specified cast is not valid.

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:

[InvalidCastException: Specified cast is not valid.]
   System.Data.SqlClient.SqlBuffer.get_Int32() +5002837
   System.Data.SqlClient.SqlDataReader.GetInt32(Int32 i) +38
   Read_DynamicClass1(ObjectMaterializer`1 ) +322
   System.Data.Linq.SqlClient.ObjectReader`2.MoveNext() +32
   System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +327
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