)
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: June 24, 2019).
Unfortunately, activation email could not send to your email. Please try again.
Syncfusion Feedback

How to accomplish multiple levels of context choice list implementation in the WinForms SyntaxEditor (EditControl)?

Platform: WinForms |
Control: EditControl |
Published Date: April 30, 2011 |
Last Revised Date: December 11, 2019

Multiple levels of context choice

Multiple levels of context choice list can be implemented by handling the ContextChoiceBeforeOpen and ContextChoiceOpen event.

C#

private void editControl1_ContextChoiceBeforeOpen(object sender, System.ComponentModel.CancelEventArgs e)
{
    ILexem lex;
    lex = this.editControl1.ContextChoiceController.LexemBeforeDropper as ILexem;
    if ((lex.Text == "this") || (lex.Text == "me"))
       firstLevel = true;
    else if (ContextChoiceListPresenceCheck(contextChoiceListLevelOne, lex.Text) == true)
       secondLevel = true;
    else
       e.Cancel = true;
}
private void editControl1_ContextChoiceOpen(Syncfusion.Windows.Forms.Edit.Interfaces.IContextChoiceController controller)
{
    if (firstLevel == true)
    {
       controller.Items.Clear();
       for (int i=0; i<contextChoiceListLevelOne.Length; i++)
       {
          controller.Items.Add(contextChoiceListLevelOne[i], "This is a" + contextChoiceListLevelOne[i], this.editControl1.ContextChoiceController.Images[i]);
       } 
    }
    else if (secondLevel == true)
    {
          controller.Items.Clear();
          for (int i=0; i<contextChoiceListLevelOne.Length; i++)
          {
              controller.Items.Add(contextChoiceListLevelTwo[i], "This is a" + contextChoiceListLevelTwo[i], this.editControl1.ContextChoiceController.Images[i]);
          } 
    }
    firstLevel = false;
    secondLevel = false;
}

 

VB

Private Sub editControl1_ContextChoiceBeforeOpen(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles editControl1.ContextChoiceBeforeOpen
    Dim lex As ILexem
    lex = CType(IIf(TypeOf Me.editControl1.ContextChoiceController.LexemBeforeDropper Is ILexem,       Me.editControl1.ContextChoiceController.LexemBeforeDropper, Nothing), ILexem)    If (lex.Text = "this") OrElse (lex.Text = "me") Then
       firstLevel = True
    Else If ContextChoiceListPresenceCheck(contextChoiceListLevelOne, lex.Text) = True Then
       secondLevel = True
    Else
       e.Cancel = True
    End If
End Sub
Private Sub editControl1_ContextChoiceOpen(ByVal controller As Syncfusion.Windows.Forms.Edit.Interfaces.IContextChoiceController) Handles editControl1.ContextChoiceOpen
    If firstLevel = True Then
       controller.Items.Clear()
    Dim i As Integer=0
    Do While i < contextChoiceListLevelOne.Length
         controller.Items.Add(contextChoiceListLevelOne(i), "This is a" & contextChoiceListLevelOne(i),          Me.editControl1.ContextChoiceController.Images(i))
         i += 1
         Loop
         ElseIf secondLevel = True Then
             controller.Items.Clear()
             Dim i As Integer=0
             Do While i < contextChoiceListLevelOne.Length
                  controller.Items.Add(contextChoiceListLevelTwo(i), "This is a" & contextChoiceListLevelTwo(i), Me.editControl1.ContextChoiceController.Images(i))
                  i += 1
                  Loop
          End If
          firstLevel = False
          secondLevel = False
End Sub

 

Reference link: https://help.syncfusion.com/windowsforms/syntax-editor/intellisense#populate-intellisense-pop-up

2X faster development

The ultimate WinForms UI toolkit to boost your development speed.
ADD COMMENT
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.

Up arrow icon

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

Live Chat Icon For mobile
Live Chat Icon