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Server Error in '/' Application.

Object cannot be cast from DBNull to other types.

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: Object cannot be cast from DBNull to other types.

Source Error:


Line 28: {
Line 29: int bid = Convert.ToInt32(Rs[4]);
Line 30: int qdz = Convert.ToInt32(Rs[5]);
Line 31: string V;
Line 32: string u = NuoHa.NameEncode(DataHelper.ExecuteScalar("SELECT [name] FROM [wap_manage] WHERE [uid]=" + NuoHa.MyId + " AND [bid]=" + bid + ""));