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Item(String) Property

Gets the column with the specified key.
Syntax
'Declaration
 
Public Overloads ReadOnly Property Item( _
   ByVal columnKey As String _
) As UltraDataColumn
public UltraDataColumn Item( 
   string columnKey
) {get;}

Parameters

columnKey
Example
Following code shows various objects in the UltraWinDataSource object model and many of the properties available off those objects and how they are related.

Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinDataSource


    Private Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
        Dim ds As UltraDataSource = New UltraDataSource()

        Dim rootBand As UltraDataBand = ds.Band
        rootBand.Columns.Add("Col1", GetType(String))
        Dim col1 As UltraDataColumn = rootBand.Columns("Col1")

        ' Column has a back reference to the band.
        rootBand = col1.Band

        ' You can get the column collection a column belongs to using 
        ' ParentCollection property of the column.
        Dim columnCollection As UltraDataColumnsCollection = col1.ParentCollection

        ' UltraDataColumnsCollection also has a back reference to the band.
        ' Following two lines will give you the same band.
        rootBand = columnCollection.Band
        rootBand = col1.Band

        ds.Rows.Add()
        Dim row As UltraDataRow = ds.Rows(0)

        ' Row has a back reference to the row collection it belongs to.
        Dim rowCollection As UltraDataRowsCollection = row.ParentCollection

        ' Both the UltraDataRow and UltraDataRowsCollection have a back 
        ' reference to the band they belong to. Following two lines will
        ' get the same bands. (A row collection and rows it contains will
        ' pont to the same band).
        rootBand = rowCollection.Band
        rootBand = row.ParentCollection.Band

        ' Row collection also has a back reference to the parent row.
        Dim parentRow As UltraDataRow = rowCollection.ParentRow

        ' You can also get the parent row from a row. Following two
        ' lines do the same.
        parentRow = row.ParentRow
        parentRow = row.ParentCollection.ParentRow


        rootBand.ChildBands.Add("ChildBand")
        Dim childBand As UltraDataBand = rootBand.ChildBands("ChildBand")

        ' Band has a back reference to the bands collection it belongs to.
        Dim bandsCollection As UltraDataBandsCollection = childBand.ParentCollection

        ' Both UltraDataBand and UltraDataBandsCollection have a back reference 
        ' the parent band. Following two lines will give you the same band.
        rootBand = childBand.ParentBand
        rootBand = childBand.ParentCollection.ParentBand
    End Sub
using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.UltraWinDataSource;
using System.Diagnostics;

		private void button1_Click(object sender, System.EventArgs e)
		{
			UltraDataSource ds = new UltraDataSource( );

			UltraDataBand rootBand = ds.Band;
			rootBand.Columns.Add( "Col1", typeof( string ) );
			UltraDataColumn col1 = rootBand.Columns[ "Col1" ];

			// Column has a back reference to the band.
			rootBand = col1.Band;

			// You can get the column collection a column belongs to using 
			// ParentCollection property of the column.
			UltraDataColumnsCollection columnCollection = col1.ParentCollection;

			// UltraDataColumnsCollection also has a back reference to the band.
			// Following two lines will give you the same band.
			rootBand = columnCollection.Band;
			rootBand = col1.Band;

			ds.Rows.Add( );
			UltraDataRow row = ds.Rows[0];
 			
			// Row has a back reference to the row collection it belongs to.
			UltraDataRowsCollection rowCollection = row.ParentCollection;

			// Both the UltraDataRow and UltraDataRowsCollection have a back 
			// reference to the band they belong to. Following two lines will
			// get the same bands. (A row collection and rows it contains will
			// pont to the same band).
            rootBand = rowCollection.Band;
			rootBand = row.ParentCollection.Band;

			// Row collection also has a back reference to the parent row.
			UltraDataRow parentRow = rowCollection.ParentRow;

			// You can also get the parent row from a row. Following two
			// lines do the same.
			parentRow = row.ParentRow;
			parentRow = row.ParentCollection.ParentRow;


            rootBand.ChildBands.Add( "ChildBand" );			
			UltraDataBand childBand = rootBand.ChildBands["ChildBand"];

			// Band has a back reference to the bands collection it belongs to.
			UltraDataBandsCollection bandsCollection = childBand.ParentCollection;

			// Both UltraDataBand and UltraDataBandsCollection have a back reference 
			// the parent band. Following two lines will give you the same band.
			rootBand = childBand.ParentBand;
			rootBand = childBand.ParentCollection.ParentBand;
		}
Requirements

Target Platforms: Windows 10, Windows 8.1, Windows 8, Windows 7, Windows Server 2012, 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

See Also