Connection Property (DbDataTable)

In This Topic

Gets or sets the System.Data.IDbConnection used to connect to the data source.

Syntax

Visual Basic
C#


'Declaration Public Property Connection As DbConnection


public DbConnection Connection {get; set;}

Property Value

An System.Data.IDbConnection object which provides a connection to the data source.

Remarks

This property is used by DeleteCommand, InsertCommand, SelectCommand, and UpdateCommand, in case when these properties do not have own created connection.

Example

This sample shows how to use DbDataTable. The routine accepts DbTable-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.

csharp


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 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;
  }
}

Visual Basic


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

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

Reference

DbDataTable Class
DbDataTable Members

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