DataTableReader.GetFieldType(Int32) Method

Definition

Gets the Type that is the data type of the object.

public:
 override Type ^ GetFieldType(int ordinal);
public override Type GetFieldType (int ordinal);
override this.GetFieldType : int -> Type
Public Overrides Function GetFieldType (ordinal As Integer) As Type

Parameters

ordinal
Int32

The zero-based column ordinal.

Returns

The Type that is the data type of the object.

Exceptions

The index passed was outside the range of 0 to FieldCount - 1.

An attempt was made to read or access a column in a closed DataTableReader .

Examples

Call the following procedure, passing in a DataTableReader instance in order to display a list of all the fields and the full name for each type in the Console window.

private void TestGetFieldType(DataTableReader reader)
{
    for (int i = 0; i < reader.FieldCount; i++)
    {
        Console.WriteLine(reader.GetName(i) + ":" + 
            reader.GetFieldType(i).FullName);
    }
}
Private Sub TestGetFieldType(ByVal reader As DataTableReader)
   For i As Integer = 0 To reader.FieldCount - 1
      Console.WriteLine(reader.GetName(i) & ":" & _
         reader.GetFieldType(i).FullName)
   Next
   Console.WriteLine("Press Enter to finish.")
   Console.ReadLine()
End Sub

Applies to