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  • Blog Post: Connectionstrings, mixing usernames and windows authentication. Who goes first?

    When connecting to Sql Server from .Net, there are three namespaces containing classes to do so: System.Data.SqlClient / System.Data.OleDb / System.Data.Odbc The one should use is System.Data.SqlClient since this contains functions specific to Sql Server, note that you have to use .Net 2.0 SP1...
  • Blog Post: Error/Event 18456 explained

    Sometimes you may experience that your application, stand alone or web, can't connect to SQL Server. This error is simply reported as 18456, and the error text is "Login failed for user ‘username'" Well, you already had understood that you could not login in, since your login failed. So the error...
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