GetChild(ChildRow,UltraGridBand) メソッド

行の最初または最後の子行への参照を返します。

シンタックス

Visual Basic

'宣言
 
Public Overloads Function GetChild( _
   ByVal child As ChildRow, _
   ByVal band As UltraGridBand _
) As UltraGridRow

C#

public UltraGridRow GetChild( 
   ChildRow child,
   UltraGridBand band
)

パラメータ

child

取得する子行を示します。

band

子行が存在するバンド。

戻り値の型

行の最初または最後の子行への参照。

解説

このメソッドは、親行の最初または最後の子行への参照を返します。子行が存在しない場合、このメソッドは Nothing を返します。

Band 引数を使用すれば、子行を探す子バンドを指定できます。Band が指定されない場合、このメソッドはすべての子行セットから子行を探します。

HasChild メソッドを呼び出すと、行に子行があるかどうかを判断できます。

HasParent プロパティおよび GetSibling メソッドは、親行および兄弟行への参照をそれぞれ返すために起動することができます。

使用例

Visual Basic

Imports Infragistics.Shared
Imports Infragistics.Win
Imports Infragistics.Win.UltraWinGrid

  Private Sub TraverseAllRowsHelper(ByVal startRow As UltraGridRow, ByRef rowsCount As Integer, ByRef groupByRowsCount As Integer)

      Dim row As UltraGridRow = startRow

      While Not row Is Nothing
          If TypeOf row Is UltraGridGroupByRow Then
              ' Write code here to process the group by row.
              groupByRowsCount += 1
          Else
              ' Write code here to process the regular by row.
              rowsCount += 1
          End If

          ' If the row has any child rows, then process them too.
          If row.HasChild(False) Then
              Me.TraverseAllRowsHelper(row.GetChild(ChildRow.First), rowsCount, groupByRowsCount)
          End If

          row = row.GetSibling(SiblingRow.Next, True, False)
      End While

  End Sub

  Private Sub Button71_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles button71.Click

      Dim rowsCount As Integer = 0
      Dim groupByRowsCount As Integer = 0

      ' Get the first row in the UltraGrid.
      Dim firstRow As UltraGridRow = Me.ultraGrid1.GetRow(ChildRow.First)

      ' Call the helper method which is a recursive implmentation for traversing rows.
      MessageBox.Show("Please wait. This operation may take a while depending on number of rows.")
      Me.TraverseAllRowsHelper(firstRow, rowsCount, groupByRowsCount)

      ' Show a dialog showing the number of regular rows and number of group-by rows.
      MessageBox.Show("The UltraGrid has " & rowsCount & " number of regular rows, and " & groupByRowsCount & " number of group-by rows.")

  End Sub

C#

using Infragistics.Shared;
using Infragistics.Win;
using Infragistics.Win.UltraWinGrid;
using System.Diagnostics;

private void TraverseAllRowsHelper( UltraGridRow startRow, ref int rowsCount, ref int groupByRowsCount )
{

	UltraGridRow row = startRow;

	while ( null != row )
	{				
		if ( row is UltraGridGroupByRow )
		{
			// Write code here to process the group by row.
			groupByRowsCount++;
		}
		else
		{
			// Write code here to process the regular by row.
			rowsCount++;
		}

		// If the row has any child rows, then process them too.
		if ( row.HasChild( false ) )
		{
			this.TraverseAllRowsHelper( row.GetChild( ChildRow.First ), ref rowsCount, ref groupByRowsCount );
		}

		row = row.GetSibling( SiblingRow.Next, true, false );
	}

}

private void button71_Click(object sender, System.EventArgs e)
{

	int rowsCount = 0;
	int groupByRowsCount = 0;

	// Get the first row in the UltraGrid.
	UltraGridRow firstRow = this.ultraGrid1.GetRow( ChildRow.First );

	// Call the helper method which is a recursive implmentation for traversing rows.
	MessageBox.Show( "Please wait. This operation may take a while depending on number of rows." );
	this.TraverseAllRowsHelper( firstRow, ref rowsCount, ref groupByRowsCount );

	// Show a dialog showing the number of regular rows and number of group-by rows.
	MessageBox.Show( "The UltraGrid has " + rowsCount + " number of regular rows, and " + groupByRowsCount + " number of group-by rows." );

}