GetName Method (SqlDataReader)

In This Topic

Gets the name of the specified column.

Syntax

Visual Basic
C#

'Declaration
 
Public Overrides Function GetName( _
   ByVal i As Integer _
) As String

public override string GetName( 
   int i
)

Parameters

i: The zero-based column ordinal.

Return Value

A string that is the name of the specified column.

Example

This sample shows how to retrieve names and types of all columns in a table.

csharp

public void GetFields(SqlConnection myConnection)
{
  SqlCommand cmd = new SqlCommand("SELECT * FROM Test.Dept");
  cmd.Connection = myConnection;
  myConnection.Open();
  try
  {
    SqlDataReader reader = cmd.ExecuteReader();
    reader.Read();
    for (int i=0;i < reader.FieldCount;i++)
    {
      string fieldType = reader.GetDataTypeName(i);
      string fieldName = reader.GetName(i);
      string fieldType2 = reader.GetFieldType(i).FullName;
      Console.WriteLine(fieldName+"\t"+ fieldType+"\t"+ fieldType2);
    }        
    reader.Close();
  }
  finally
  {
    myConnection.Close();
  }
}

Visual Basic

Public Sub GetFields(ByVal myConnection As SqlConnection
  Dim cmd As SqlCommand = New SqlCommand("SELECT * FROM Test.Dept")
  cmd.Connection = myConnection
  myConnection.Open()
  Try
    Dim reader As SqlDataReader = cmd.ExecuteReader()
    reader.Read()
    Dim i As Integer
    For i = 0 To reader.FieldCount - 1
      Dim fieldType As String = reader.GetDataTypeName(i)
      Dim fieldName As String = reader.GetName(i)
      Console.WriteLine(fieldName & " " & fieldType)
    Next i
    reader.Close()
  Finally
    myConnection.Close()
  End Try
End Sub

Requirements

Target Platforms: Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

Reference

SqlDataReader Class
SqlDataReader Members
GetFieldType Method

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