DataTableReader.GetFieldType(Int32) Method

Definition

Namespace:

System.Data

Assembly:

System.Data.Common.dll

Source:

DataTableReader.cs

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

Type

The Type that is the data type of the object.

Exceptions

ArgumentOutOfRangeException

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

InvalidOperationException

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