dotConnect for Adobe Commerce Documentation
Devart.Data Namespace / SqlShimDataReader Class / HasRows Property
Example

HasRows Property (SqlShimDataReader)
Gets a value indicating whether the SqlShimDataReader contains one or more rows.
Syntax
'Declaration
 
Public Overrides ReadOnly Property HasRows As Boolean
 

Property Value

true if the SqlShimDataReader contains one or more rows; otherwise, false.
Remarks
Note that this property returns true even if all rows were read out.
Example
This sample shows how to optimize reading from a data source using HasRows property.
public void FetchResults(MagentoConnection adobe commerceConnection)
{
  MagentoCommand cmd = new MagentoCommand("SELECT * FROM Customers");
  cmd.FetchSize = 100;
  cmd.Connection = adobe commerceConnection;
  adobe commerceConnection.Open();
  try
  {
    MagentoDataReader reader = cmd.ExecuteReader();
    if (reader.HasRows)
    {
      while (reader.Read())
      {
        for (int i=0;i<reader.FieldCount;i++)
        {
          Console.Write("\t"+reader[i]);
        }
        Console.WriteLine();
      }
    }
    else
    {
      Console.WriteLine("No rows detected.");
    }
  }
  finally
  {
    adobe commerceConnection.Close();
  }
}
Public Sub FetchResults(ByVal adobe commerceConnection As MagentoConnection)
  Dim cmd As MagentoCommand = New MagentoCommand("SELECT * FROM Customers")
  cmd.FetchSize = 100
  cmd.Connection = adobe commerceConnection
  adobe commerceConnection.Open()
  Try
    Dim reader As MagentoDataReader = cmd.ExecuteReader()
    If reader.HasRows Then
      While reader.Read()
        Dim i
        For i = 0 To reader.FieldCount - 1
          Console.Write(String.Concat(" ", reader(i)))
        Next i
        Console.WriteLine()
      End While
    Else
      Console.WriteLine("No rows detected.")
    End If
  Finally
    adobe commerceConnection.Close()
  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