GetFieldType Method

DataTableReader.GetFieldType Method (Int32)


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

Namespace:   System.Data
Assembly:  System.Data (in System.Data.dll)

public override Type GetFieldType(
	int ordinal


Type: System.Int32

The zero-based column ordinal.

Return Value

Type: System.Type

The Type that is the data type of the object.

Exception Condition

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 .

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) + ":" + 

.NET Framework
Available since 2.0
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