System.Data.SqlClient.SqlCommandBuilder.BuildCache C# (CSharp) Method

		private void BuildCache (bool closeConnection)
		{
			SqlCommand sourceCommand = SourceCommand;
			if (sourceCommand == null)
				throw new InvalidOperationException ("The DataAdapter.SelectCommand property needs to be initialized.");
			SqlConnection connection = sourceCommand.Connection;
			if (connection == null)
				throw new InvalidOperationException ("The DataAdapter.SelectCommand.Connection property needs to be initialized.");
				
			if (dbSchemaTable == null) {
				if (connection.State == ConnectionState.Open)
					closeConnection = false;	
				else
					connection.Open ();
	
				SqlDataReader reader = (SqlDataReader)sourceCommand.ExecuteReader (CommandBehavior.SchemaOnly | CommandBehavior.KeyInfo);
				dbSchemaTable = reader.GetSchemaTable ();
				reader.Close ();
				if (closeConnection)
					connection.Close ();	
				BuildInformation (dbSchemaTable);
			}
		}