Cell プロパティ (BeforeNodeLayoutItemResizeEventArgs)

サイズ変更された UltraTreeNodeCell を返します。

シンタックス

Visual Basic

'宣言
 
Public ReadOnly Property Cell As UltraTreeNodeCell

C#

public UltraTreeNodeCell Cell {get;}

解説

注意： 列のヘッダー (ラベルとも呼ばれます) がサイズ変更された場合、 Cell プロパティは null (VB では Nothing) を返します。プロパティにアクセスする前に、必ず null 参照チェックを実行してください。

使用例

Visual Basic

Imports Infragistics.Win
Imports Infragistics.Win.Layout
Imports Infragistics.Win.UltraWinTree

    Private Sub ultraTree1_AfterNodeLayoutItemResize(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTree.AfterNodeLayoutItemResizeEventArgs) Handles ultraTree1.AfterNodeLayoutItemResize

        '	Output a message to the debug window describing the resize operation
        Dim message As String = String.Empty
        If (e.IsCell) Then
            message = "Cell '" + e.Cell.Text + "' was successfully resized."
        Else
            message = "The header of column '" + e.Column.TextResolved + "' was successfully resized."
        End If

    End Sub

    Private Sub ultraTree1_BeforeNodeLayoutItemResize(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinTree.BeforeNodeLayoutItemResizeEventArgs) Handles ultraTree1.BeforeNodeLayoutItemResize
        '	Disallow cell resizing for non-root level nodes
        If Not e.Node Is Nothing AndAlso e.Node.Level > 0 Then

            e.Cancel = True
            Return
        End If

        Dim originalSize As Size = Size.Empty

        '	Determine whether a cell or header was resized
        If (e.IsLabel) Then
            originalSize = e.Column.LayoutInfo.PreferredLabelSize
        Else
            originalSize = e.Column.LayoutInfo.PreferredCellSize
        End If

        '	Determine the amount by which the item was resized
        Dim delta As Size = New Size(e.NewSize.Width - originalSize.Width, e.NewSize.Height - originalSize.Height)

        '	Output a message to the debug window describing the resize operation
        Dim message As String = String.Empty
        If (e.IsCell) Then
            message = "Cell '" + e.Cell.Text + "' is being resized by " + delta.Width.ToString() + " units horizontally and " + delta.Height.ToString() + " units vertically."
        Else
            message = "The header of column '" + e.Column.TextResolved + "' is being resized by " + delta.Width.ToString() + " units horizontally and " + delta.Height.ToString() + " units vertically."
        End If

        Debug.WriteLine(message)

    End Sub

C#

using Infragistics.Win;
using Infragistics.Win.Layout;
using Infragistics.Win.UltraWinTree;
using System.Diagnostics;

		private void ultraTree1_AfterNodeLayoutItemResize(object sender, Infragistics.Win.UltraWinTree.AfterNodeLayoutItemResizeEventArgs e)
		{
			//	Output a message to the debug window describing the resize operation
			string message = string.Empty;
			if ( e.IsCell )
				message = "Cell '" + e.Cell.Text + "' was successfully resized.";
			else
				message = "The header of column '" + e.Column.TextResolved + "' was successfully resized.";
		}

		private void ultraTree1_BeforeNodeLayoutItemResize(object sender, Infragistics.Win.UltraWinTree.BeforeNodeLayoutItemResizeEventArgs e)
		{
			//	Disallow cell resizing for non-root level nodes
			if ( e.Node != null && e.Node.Level > 0 )
			{
				e.Cancel = true;
				return;
			}

			Size originalSize = Size.Empty;

			//	Determine whether a cell or header was resized
			if ( e.IsLabel )
				originalSize = e.Column.LayoutInfo.PreferredLabelSize;
			else
				originalSize = e.Column.LayoutInfo.PreferredCellSize;

			//	Determine the amount by which the item was resized
			Size delta = new Size(	e.NewSize.Width - originalSize.Width,
									e.NewSize.Height - originalSize.Height );

			//	Output a message to the debug window describing the resize operation
			string message = string.Empty;
			if ( e.IsCell )
				message = "Cell '" + e.Cell.Text + "' is being resized by " + delta.Width.ToString() + " units horizontally and " + delta.Height.ToString() + " units vertically.";
			else
				message = "The header of column '" + e.Column.TextResolved + "' is being resized by " + delta.Width.ToString() + " units horizontally and " + delta.Height.ToString() + " units vertically.";

			Debug.WriteLine( message );
		}