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DataTableReader.GetFieldType Method

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
)

Parameters

ordinal
Type: System.Int32

The zero-based column ordinal.

Return Value

Type: System.Type
The Type that is the data type of the object.

Implements

IDataRecord.GetFieldType(Int32)

ExceptionCondition
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 .

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);
    }
}

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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