dotConnect for Dynamics 365 Documentation
Devart.Data Namespace / SqlShimDataReader Class / FieldCount Property
Example

FieldCount Property (SqlShimDataReader)
Gets the number of columns in the current row.
Syntax
'Declaration
 
Public Overrides ReadOnly Property FieldCount As Integer
 

Property Value

When not positioned in a valid record set, 0; otherwise the number of columns in the current record. The default value is -1.
Remarks
After executing a query that does not return rows, FieldCount returns 0.
Example
This sample demonstrates how to iterate through fields in a row using FieldCount property.
public void FetchResults(DynamicsConnection dynamicsConnection)
{
  DynamicsCommand cmd = new DynamicsCommand("SELECT * FROM contact");
  cmd.FetchSize = 100;
  cmd.Connection = dynamicsConnection;
  dynamicsConnection.Open();
  try
  {
    DynamicsDataReader reader = cmd.ExecuteReader();
    while (reader.Read())
    {
      for (int i=0;i<reader.FieldCount;i++)
      {
        Console.Write("\t"+reader[i]);
      }
      Console.WriteLine();
    }
  }
  finally
  {
    dynamicsConnection.Close();
  }
}
Public Sub FetchResults(ByVal dynamicsConnection As DynamicsConnection)
  Dim cmd As DynamicsCommand = New DynamicsCommand("SELECT * FROM contact")
  cmd.FetchSize = 100
  cmd.Connection = dynamicsConnection
  dynamicsConnection.Open()
  Try
    Dim reader As DynamicsDataReader = cmd.ExecuteReader()
    While reader.Read()
      Dim i
      For i = 0 To reader.FieldCount - 1
        Console.Write(String.Concat(" ", reader(i)))
      Next i
      Console.WriteLine()
    End While
  Finally
    dynamicsConnection.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