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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]);
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.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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