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DbDataReader.GetDataTypeName Method

Gets name of the data type of the specified column.

Namespace:  System.Data.Common
Assembly:  System.Data (in System.Data.dll)
public abstract string GetDataTypeName(
	int ordinal


Type: System.Int32

The zero-based column ordinal.

Return Value

Type: System.String
A string representing the name of the data type.



The specified cast is not valid.

       private static void GetDataTypes(String connectiongString) {     
          using (SqlConnection conn = new SqlConnection(connectiongString)) {
             String queryString = "Select [CourseID],[Title],[Credits] from [MySchool].[dbo].[Course]";
             using (DbCommand command = new SqlCommand(queryString, conn)) {
                using (DbDataReader reader = command.ExecuteReader()) {
                   for (Int32 i = 0; i < reader.FieldCount; i++) {

.NET Framework

Supported in: 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows Phone 8.1, Windows Phone 8, 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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