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Devart.Data.SqlServer Namespace / SqlDataReader Class / GetDataTypeName Method / GetDataTypeName(Int32) Method
Example

GetDataTypeName(Int32) Method
Gets the name of the source data type.
Syntax
'Declaration
 
Public Overloads Overrides Function GetDataTypeName( _
   ByVal i As Integer _
) As String
 

Parameters

i

Return Value

The name of the back-end data type.
Example
This sample shows how to retrieve names and types of all columns in a table.
public void GetFields(SqlConnection myConnection)
{
  SqlCommand cmd = new SqlCommand("SELECT * FROM Test.Dept");
  cmd.Connection = myConnection;
  myConnection.Open();
  try
  {
    SqlDataReader reader = cmd.ExecuteReader();
    reader.Read();
    for (int i=0;i < reader.FieldCount;i++)
    {
      string fieldType = reader.GetDataTypeName(i);
      string fieldName = reader.GetName(i);
      string fieldType2 = reader.GetFieldType(i).FullName;
      Console.WriteLine(fieldName+"\t"+ fieldType+"\t"+ fieldType2);
    }        
    reader.Close();
  }
  finally
  {
    myConnection.Close();
  }
}
Public Sub GetFields(ByVal myConnection As SqlConnection)
  Dim cmd As SqlCommand = New SqlCommand("SELECT * FROM Test.Dept")
  cmd.Connection = myConnection
  myConnection.Open()
  Try
    Dim reader As SqlDataReader = cmd.ExecuteReader()
    reader.Read()
    Dim i As Integer
    For i = 0 To reader.FieldCount - 1
      Dim fieldType As String = reader.GetDataTypeName(i)
      Dim fieldName As String = reader.GetName(i)
      Dim fieldType2 As String = reader.GetFieldType(i).FullName
      Console.WriteLine(fieldName & Chr(9) & fieldType & Chr(9) & fieldType2)
    Next i
    reader.Close()
  Finally
    myConnection.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