How to load intellisense popup with different collections based on keywords in WinForms SyntaxEditor (EditControl)?

// Ensure that the context choice popup is displayed if the invoking lexems are "function" or "tables" only
private void editControl1_ContextChoiceBeforeOpen(object sender, System.ComponentModel.CancelEventArgs e)
{
 ILexem lex;
 ILexemLine lexemLine = this.editControl1.GetLine(this.editControl1.CurrentLine);
 //Gets the index of the current word in that line
 int ind = GetContextChoiceCharIndex(lexemLine);
 if (ind<=0)
 {
  e.Cancel = true;
  return;
 }
 lex = lexemLine.LineLexems[ind-1] as ILexem;
 // If the count is less than '2', do not show the ContextChoice popup
 if (lexemLine.LineLexems.Count<2)
  e.Cancel = true;
 else
 {
  // Display ContextChoice popup if the lexem used to invoke them is "function" or "tables" only
  //Check if current line text is "function" or "tables"
  if ((lex.Text == "function") || (lex.Text == "tables"))
    //Open Context Choice list
    e.Cancel = false;
  else
  {
    //Cancel request
    e.Cancel = true;
  }
 }
}
// Populate the context choice list on popup
private void 
editControl1_ContextChoiceOpen(Syncfusion.Windows.Forms.Edit.Interfaces.IContextChoiceController controller)
{
  ILexem lex;
  ILexemLine lexemLine = this.editControl1.GetLine(this.editControl1.CurrentLine);
  //Gets the index of the current word in that line
  int ind = GetContextChoiceCharIndex(lexemLine);
  if (ind <= 0)
  {
    return;
  }
  lex = lexemLine.LineLexems[ind - 1] as ILexem;
  if (lexemLine.LineLexems.Count < 2)
    return;
  else
  {
    // Display ContextChoice popup if the lexem used to invoke them is "function" or "tables" only
    //Add Context choice list for "function" word
    if (lex.Text == "function")
    {
      controller.Items.Add("Function 1", "This is Function 1",    this.editControl1.ContextChoiceController.Images["Image0"]);
      controller.Items.Add("Function 2", "This is Function 2", this.editControl1.ContextChoiceController.Images["Image1"]);
      controller.Items.Add("Function 3", "This is Function 3", this.editControl1.ContextChoiceController.Images["Image2"]);
      controller.Items.Add("Function 4", "This is Function 4", this.editControl1.ContextChoiceController.Images["Image3"]);
    }
    //Add context choice list for "tables" word
    else if(lex.Text == "tables")
    {
      controller.Items.Add("Table 1", "This is Table 1", this.editControl1.ContextChoiceController.Images["Image0"]);
      controller.Items.Add("Table 2", "This is Table 2", this.editControl1.ContextChoiceController.Images["Image1"]);
      controller.Items.Add("Table 3", "This is Table 3", this.editControl1.ContextChoiceController.Images["Image2"]);
      controller.Items.Add("Table 4", "This is Table 4", this.editControl1.ContextChoiceController.Images["Image3"]);
    }
  }
}
 
 

' Ensure that the context choice popup is displayed if the invoking lexems are "function" or "tables" only
Private Sub editControl1_ContextChoiceBeforeOpen(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles editControl1.ContextChoiceBeforeOpen
   Dim lex As ILexem
   Dim lexemLine As ILexemLine = Me.editControl1.GetLine(Me.editControl1.CurrentLine)
   'Gets the index of the current word in that line
   Dim ind As Integer = GetContextChoiceCharIndex(lexemLine)
   If ind<=0 Then
     e.Cancel = True
   Return
   End If
   lex = TryCast(lexemLine.LineLexems(ind-1), ILexem)
   ' If the count is less than '2', do not show the ContextChoice popup
   If lexemLine.LineLexems.Count<2 Then
      e.Cancel = True
   Else
      ' Display ContextChoice popup if the lexem used to invoke them is "function" or "tables" only
   If (lex.Text = "function") OrElse (lex.Text = "tables") Then
      e.Cancel = False
   Else
      e.Cancel = True
   End If
  End If
End Sub
 
' Populate the context choice list on popup
Private Sub editControl1_ContextChoiceOpen(ByVal controller As 
Syncfusion.Windows.Forms.Edit.Interfaces.IContextChoiceController) Handles 
editControl1.ContextChoiceOpen
   Dim lex As ILexem
   Dim lexemLine As ILexemLine = Me.editControl1.GetLine(Me.editControl1.CurrentLine)
   'Gets the index of the current word in that line
   Dim ind As Integer = GetContextChoiceCharIndex(lexemLine)
   If ind <= 0 Then
     Return
   End If
   lex = TryCast(lexemLine.LineLexems(ind - 1), ILexem)
   If lexemLine.LineLexems.Count < 2 Then
     Return
   Else
     'Display ContextChoice popup if the lexem used to invoke them is "function” or "tables" only
     'Add Context choice list for "function" word
     If lex.Text = "function" Then
       controller.Items.Add("Function 1", "This is Function 1", 
Me.editControl1.ContextChoiceController.Images("Image0"))
       controller.Items.Add("Function 2", "This is Function 2", 
Me.editControl1.ContextChoiceController.Images("Image1"))
       controller.Items.Add("Function 3", "This is Function 3", 
Me.editControl1.ContextChoiceController.Images("Image2"))
       controller.Items.Add("Function 4", "This is Function 4", 
Me.editControl1.ContextChoiceController.Images("Image3"))
       'Add Context choice list for "tables" word
     ElseIf lex.Text = "tables" Then
       controller.Items.Add("Table 1", "This is Table 1", 
Me.editControl1.ContextChoiceController.Images("Image0"))
       controller.Items.Add("Table 2", "This is Table 2",  Me.editControl1.ContextChoiceController.Images("Image1"))
       controller.Items.Add("Table 3", "This is Table 3", Me.editControl1.ContextChoiceController.Images("Image2"))
       controller.Items.Add("Table 4", "This is Table 4", Me.editControl1.ContextChoiceController.Images("Image3"))
     End If
   End If
End Sub