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Syncfusion Feedback

How do I implement the ContextTooltip feature in EditControl?


The ContextTooltip can be populated with additional information on the corresponding lexem by handling the EditControl's UpdateContextTooltip event.

Please refer to the code snippets below and the sample attached to know more about it.


private void editControl1_UpdateContextToolTip(object sender, Syncfusion.Windows.Forms.Edit.UpdateTooltipEventArgs e)


if( e.Text == string.Empty )


Point pointVirtual = editControl1.PointToVirtualPosition( new Point( e.X, e.Y ) );

if( pointVirtual.Y > 0 )


// Get the current line

ILexemLine line = editControl1.GetLine( pointVirtual.Y );

if( line != null )


// Get tokens from the current line

ILexem lexem = line.FindLexemByColumn( pointVirtual.X );

if( lexem != null )


IConfigLexem configLexem = lexem.Config as IConfigLexem;

e.Text = "This is of type " + configLexem.Format.Name + " : " + lexem.Text;







Private Sub editControl1_UpdateContextToolTip(ByVal sender As Object, ByVal e As Syncfusion.Windows.Forms.Edit.UpdateTooltipEventArgs) Handles editControl1.UpdateContextToolTip

If e.Text = String.Empty Then

Dim pointVirtual As Point = editControl1.PointToVirtualPosition(New Point(e.X, e.Y))

If pointVirtual.Y > 0 Then

'' Get the current line

Dim line As ILexemLine = editControl1.GetLine(pointVirtual.Y)

If Not (line Is Nothing) Then

'' Get tokens from the current line

Dim lexem As ILexem = line.FindLexemByColumn(pointVirtual.X)

If Not (lexem Is Nothing) Then

Dim configLexem As IConfigLexem = lexem.Config

e.Text = "This is of type " + configLexem.Format.Name + " : " + lexem.Text

End If

End If

End If

End If

End Sub

Article ID: Published Date: Last Revised Date: Platform: Control:
394 04/30/2011 07/10/2014 Windows Forms EditControl
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