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Devart.Common Namespace / DbDataTable Class / SelectCommand Property
Example

In This Topic
    SelectCommand Property (DbDataTable)
    In This Topic
    Gets or sets a SQL statement used to select records in the data source.
    Syntax
    'Declaration
     
    Public Property SelectCommand As DbCommand
    public DbCommand SelectCommand {get; set;}

    Property Value

    An System.Data.IDbCommand that is used during a fill operation to select records from the data source for placement in the DbDataTable.
    Remarks

    SelectCommand uses its own Connection if it is created. Otherwise SelectCommand uses Connection property.

    If the SelectCommand property is not set, DbDataTable generates necessary SQL statements automatically.

    Example
    This sample shows how to use DbDataTable. The routine accepts DbDataTable-compatible object, IDbCommand implementor object, and IDbConnection implementor object as parameters. After SQL query text has been set the data is retrieved from the table.
    public void UseDataTable(DbDataTable myDataTable, DbCommand myCommand, DbConnection myConnection)
    {
      myDataTable.Connection = myConnection;
      myCommand.CommandText = "SELECT * FROM Test.Dept";
      myDataTable.SelectCommand = myCommand;
      try
      {
        myDataTable.Active = true;
        foreach(DataRow myRow in myDataTable.Rows)
        {
          foreach(DataColumn myCol in myDataTable.Columns)
          {
            Console.Write(myRow[myCol]+"\t");
          }
          Console.WriteLine();
        }
      }
      finally
      {
        myDataTable.Active = false;
      }
    }
    Public Sub UseDataTable(ByVal myDataTable As DbDataTable, ByVal myCommand As DbCommand, ByVal myConnection As DbConnection)
      myDataTable.Connection = myConnection
      myCommand.CommandText = "SELECT * FROM Test.Dept"
      myDataTable.SelectCommand = myCommand
      Try
        myDataTable.Active = True
        Dim myRow As DataRow
        Dim myCol As DataColumn
        For Each myRow In myDataTable.Rows
          For Each myCol In myDataTable.Columns
            Console.Write(myRow(myCol) & Chr(9))
          Next myCol
          Console.WriteLine()
        Next myRow
      Finally
        myDataTable.Active = False
      End Try
    End Sub
    Requirements

    Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

    See Also