Column プロパティ (BeforeDisplayDataErrorTooltipEventArgs)

データ エラー ツールヒントが行に対して表示される場合 (ユーザーが行セレクターのデータ エラー アイコンの上にマウスを置いた場合) 、Column は null になります。データエラーツールヒントがセルに対して表示される場合、このプロパティは関連付けられた列を返します。

シンタックス

Visual Basic

'宣言
 
Public ReadOnly Property Column As UltraGridColumn

C#

public UltraGridColumn Column {get;}

使用例

Visual Basic

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


    Private Sub UltraGrid1_BeforeDisplayDataErrorTooltip(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinGrid.BeforeDisplayDataErrorTooltipEventArgs) Handles UltraGrid1.BeforeDisplayDataErrorTooltip
        ' You can get the instance of the IDataErrorInfo that provided the UltraGrid
        ' with the error using the DataErrorInfo property.
        Dim dataErrorInfo As System.ComponentModel.IDataErrorInfo = e.DataErrorInfo

        ' You can get the underlying list object using the row's ListObject property.
        Dim listObject As Object = e.Row.ListObject

        ' If the UltraGrid is bound to a DataSet or DataTable then the listObjects 
        ' are instances of DataRowView. You can get the underlying DataRow from it.
        Dim drv As DataRowView = Nothing
        Dim dataRow As DataRow = Nothing
        If TypeOf listObject Is DataRowView Then
            drv = DirectCast(listObject, DataRowView)
            dataRow = drv.Row
        End If

        ' You can modify the tooltip text by setting the TooltipText property.
        If Not Nothing Is e.Column Then
            ' If Column is non-null then the tooltip is being displayed for the
            ' error icon of a cell.
            e.TooltipText = "Cell Data Error Tooltip for " & e.Column.Key & ": " & e.TooltipText
        Else
            ' If the Column is null then the tooltip is being displayed for the 
            ' error icon of a row selector.
            e.TooltipText = "Row Data Error Tooltip: " & e.TooltipText
        End If

        ' You can conditionally prevent the displaying of the tooltip by setting 
        ' the Cancel to true.
        If e.TooltipText.Length > 10000 Then
            e.Cancel = True
        End If
    End Sub

C#

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


		private void UltraGrid1_BeforeDisplayDataErrorTooltip(object sender, Infragistics.Win.UltraWinGrid.BeforeDisplayDataErrorTooltipEventArgs e)
		{
			// You can get the instance of the IDataErrorInfo that provided the UltraGrid
			// with the error using the DataErrorInfo property.
			System.ComponentModel.IDataErrorInfo dataErrorInfo = e.DataErrorInfo;

			// You can get the underlying list object using the row's ListObject property.
			object listObject = e.Row.ListObject;
			
			// If the UltraGrid is bound to a DataSet or DataTable then the listObjects 
			// are instances of DataRowView. You can get the underlying DataRow from it.
			DataRowView drv = null;
			DataRow dataRow = null;
			if ( listObject is DataRowView )
			{
				drv = (DataRowView)listObject;
				dataRow = drv.Row;
			}
			
			// You can modify the tooltip text by setting the TooltipText property.
			if ( null != e.Column )
			{
				// If Column is non-null then the tooltip is being displayed for the
				// error icon of a cell.
				e.TooltipText = "Cell Data Error Tooltip for " + e.Column.Key + ": " + e.TooltipText;
			}
			else
			{
				// If the Column is null then the tooltip is being displayed for the 
				// error icon of a row selector.
				e.TooltipText = "Row Data Error Tooltip: " + e.TooltipText;
			}

            // You can conditionally prevent the displaying of the tooltip by setting 
			// the Cancel to true.
			if ( e.TooltipText.Length > 10000 )
			{
				e.Cancel = true;
			}
		}