dotConnect for PostgreSQL Documentation
Devart.Data.PostgreSql Namespace / PgSqlDataAdapter Class / SelectCommand Property
Example

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

    Property Value

    A PgSqlCommand that is used during a fill operation to select records from the data source for placement in the System.Data.DataSet.
    Remarks
    When SelectCommand is assigned to a previously created PgSqlCommand, the PgSqlCommand is not cloned. Instead, the SelectCommand maintains a reference to the previously created PgSqlCommand object.

    If SelectCommand does not return any rows, no tables are added to the System.Data.DataSet, and no exception is raised.

    This property supports the InterForm technology.

    Example
    The following example creates a PgSqlDataAdapter, sets some of its properties, retrieves data from a table, and displays it.
    public void CreateDataAdapter(PgSqlConnection pgConnection)
    {
      PgSqlDataAdapter myAdapter = new PgSqlDataAdapter();
      myAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey;
      DataSet myDataSet = new DataSet();
      myAdapter.SelectCommand = new PgSqlCommand("SELECT DeptNo, DName FROM Test.Dept", pgConnection);
      myAdapter.Fill(myDataSet,"Dept");
      //Get all data from all tables within the dataset
      foreach(DataTable myTable in myDataSet.Tables)
      {
        foreach(DataRow myRow in myTable.Rows)
        {
          foreach (DataColumn myColumn in myTable.Columns)
          {
            Console.Write(myRow[myColumn]+"\t");
          }
          Console.WriteLine();
        }
        Console.WriteLine();
      }
    }
    Public Sub CreateDataAdapter(ByVal pgConnection As PgSqlConnection)
      Dim myAdapter As PgSqlDataAdapter = New PgSqlDataAdapter
      myAdapter.MissingSchemaAction = MissingSchemaAction.AddWithKey
      Dim myDataSet As DataSet = New DataSet
      myAdapter.SelectCommand = New PgSqlCommand("SELECT DeptNo, DName FROM Test.Dept", pgConnection)
      myAdapter.Fill(myDataSet, "Dept")
      Dim myTable As DataTable
      Dim myRow As DataRow
      Dim myColumn As DataColumn
      ' Get all data from all tables within the dataset
      For Each myTable In myDataSet.Tables
        For Each myRow In myTable.Rows
          For Each myColumn In myTable.Columns
            Console.Write(myRow(myColumn) & Chr(9))
          Next myColumn
          Console.WriteLine()
        Next myRow
        Console.WriteLine()
      Next myTable
    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