Read Method (SqlShimDataReader)

In This Topic

Advances the SqlShimDataReader to the next record.

Syntax

Visual Basic
C#

'Declaration
 
Public Overrides Function Read() As Boolean

public override bool Read()

Return Value

true if there are more rows; otherwise, false.

Remarks

The default position of the SqlShimDataReader is prior to the first record. Therefore, you must call Read to begin accessing any data.

While the SqlShimDataReader is in use, the associated Devart.Data.Dynamics.DynamicsConnection is busy serving it until you call Close.

Example

The following example creates a Devart.Data.Dynamics.DynamicsConnection, a Devart.Data.Dynamics.DynamicsCommand, and a SqlShimDataReader. The example reads through the data, writing it out to the console. Finally, the example closes the SqlShimDataReader, then the Devart.Data.Dynamics.DynamicsConnection.

csharp

public void ReadMyData(string myConnString)
{
  string mySelectQuery = "SELECT contactid, lastname FROM contact";
  DynamicsConnection dynamicsConnection = new DynamicsConnection(myConnString);
  DynamicsCommand dynamicsCommand = new DynamicsCommand(mySelectQuery,dynamicsConnection);
  dynamicsConnection.Open();
  DynamicsDataReader dynamicsReader;
  dynamicsReader = dynamicsCommand.ExecuteReader();
  // Always call Read before accessing data.
  while (dynamicsReader.Read()) {
    Console.WriteLine(dynamicsReader.GetString(0) + ", " + dynamicsReader.GetString(1));
  }
  // always call Close when done reading.
  dynamicsReader.Close();
  // Close the connection when done with it.
  dynamicsConnection.Close();
}

Visual Basic

Public Sub ReadMyData(myConnString As String)
  Dim mySelectQuery As String = "SELECT contactid, lastname FROM contact"
  Dim dynamicsConnection As New DynamicsConnection(myConnString)
  Dim dynamicsCommand As New DynamicsCommand(mySelectQuery, dynamicsConnection)
  dynamicsConnection.Open()
  Dim dynamicsReader As DynamicsDataReader
  dynamicsReader = dynamicsCommand.ExecuteReader()
  ' Always call Read before accessing data.
  While dynamicsReader.Read()
    Console.WriteLine(dynamicsReader.GetString(0) + ", " _
      + dynamicsReader.GetString(1))
  End While
  ' always call Close when done reading.
  dynamicsReader.Close()
  ' Close the connection when done with it.
  dynamicsConnection.Close()
End Sub

Reference

SqlShimDataReader Class
SqlShimDataReader Members
DynamicsConnection Class
DynamicsCommand Class

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