Hi, Just tonight i am seeing a lot of 'Specified cast is not valid' errors on all IQueryable<> .ToList() calls in my code. I haven't changed anything in my code. This was working for 5 years until tonight. Did DiscountASP.net change anything?? { "Message": "Specified cast is not valid.", "StackTrace": " at System.Data.SqlClient.SqlBuffer.get_Int16()\r\n at System.Data.SqlClient.SqlDataReader.GetInt16(Int32 i)\r\n at Read_Client(ObjectMaterializer`1 )\r\n at System.Data.Linq.SqlClient.ObjectReaderCompiler.ObjectReader`2.MoveNext()\r\n at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)\r\n at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)\r\n at Web.Modules.Admin.Services.Admin.SearchClient(String info)", "ExceptionType": "System.InvalidCastException" }
An InvalidCastException is thrown when cast from one type to another type is not supported. In some reference type conversions , the compiler cannot determine whether a cast will be valid. It is because of the source type cannot be converted to the destination type , so the cast does not succeed.It is important to note that this exception is caused by programming error and should not be handled in a try/catch block; instead, the cause of the exception should be eliminated. C# provides the "is" operator to enable you to test for compatibility before actually performing a cast operation . It will checks if the runtime type of an expression result is compatible with a given type.
