DataColumnCollection.Item Property (Int32)

Gets the DataColumn from the collection at the specified index.

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

'Declaration
Public ReadOnly Property Item ( _
	index As Integer _
) As DataColumn

Parameters

index
Type: System.Int32

The zero-based index of the column to return.

Property Value

Type: System.Data.DataColumn
The DataColumn at the specified index.

ExceptionCondition
IndexOutOfRangeException

The index value is greater than the number of items in the collection.

The Contains method can be used to test for the existence of a column. This is useful before you try to use Item.

The following example uses the Item property to print the ColumnName value of a DataColumn object specified by index. The example uses the DataTable that is contained by a System.Windows.Forms.DataGrid control.

Private Sub PrintColumnNamesByIndex(table As DataTable)
    ' Get the DataColumnCollection from a DataTable in a DataSet. 
    Dim columns As DataColumnCollection = table.Columns

    ' Print each column's name using the Index. 
    Dim i As Integer 
    For i = 0 To columns.Count - 1
        Console.WriteLine(columns(i))
    Next i
End Sub

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0
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