Item(String) プロパティ

指定したキーを持つ列を取得します。

シンタックス

Visual Basic

'宣言
 
Public Overloads ReadOnly Property Item( _
   ByVal columnKey As String _
) As UltraDataColumn

C#

public UltraDataColumn Item( 
   string columnKey
) {get;}

パラメータ

columnKey

使用例

Visual Basic

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

C#

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;
		}