We use cookies to give you the best experience on our website. If you continue to browse, then you agree to our privacy policy and cookie policy. (Last updated on: November 16, 2018).
Unfortunately, activation email could not send to your email. Please try again.
Syncfusion Feedback

How do I implement the ContextTooltip feature in EditControl?

Platform: WinForms |
Control: EditControl |
Published Date: April 30, 2011 |
Last Revised Date: July 10, 2014


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

2X faster development

The ultimate WinForms UI toolkit to boost your development speed.
You must log in to leave a comment

Please sign in to access our KB

This page will automatically be redirected to the sign-in page in 10 seconds.

Warning Icon You are using an outdated version of Internet Explorer that may not display all features of this and other websites. Upgrade to Internet Explorer 8 or newer for a better experience.Close Icon