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DataColumnCollection.Item Property (Int32)

Gets the DataColumn from the collection at the specified index.

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

public DataColumn this[
	int index
] { get; }

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 void PrintColumnNamesByIndex(DataTable table)
{
    // Get the DataColumnCollection from a DataTable in a DataSet.
    DataColumnCollection columns = table.Columns;

    // Print each column's name using the Index. 
    for (int i = 0 ;i <columns.Count ;i++)
        Console.WriteLine(columns[i]);
}

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

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

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0

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