Hello, Sandor,
You can create a custom
AutoCompleteSuggestHelper and customize its popup form in order to add a
RadButton. You can find below a sample code snippet which result is illustrated in the provided screenshot:
public RadForm1()
{
InitializeComponent();
for (int i = 0; i < 100; i++)
{
this.radDropDownList1.Items.Add("Item" + i);
}
this.radDropDownList1.AutoCompleteMode = AutoCompleteMode.Suggest;
this.radDropDownList1.DropDownListElement.AutoCompleteSuggest = new CustomAutoCompleteSuggestHelper(this.radDropDownList1.DropDownListElement);
this.radDropDownList1.DropDownListElement.AutoCompleteSuggest.DropDownList.VisualItemFormatting += DropDownList_VisualItemFormatting;
}
private void DropDownList_VisualItemFormatting(object sender, Telerik.WinControls.UI.VisualItemFormattingEventArgs args)
{
args.VisualItem.DrawFill = true;
args.VisualItem.BackColor = Color.Yellow;
args.VisualItem.GradientStyle = Telerik.WinControls.GradientStyles.Solid;
}
public class CustomAutoCompleteSuggestHelper : AutoCompleteSuggestHelper
{
public CustomAutoCompleteSuggestHelper(RadDropDownListElement owner) : base(owner)
{
}
protected override RadDropDownListElement CreateDropDownElement()
{
return new CustomRadDropDownListElement();
}
}
public class CustomRadDropDownListElement : RadDropDownListElement
{
protected override RadPopupControlBase CreatePopupForm()
{
DropDownPopupForm form = base.CreatePopupForm() as DropDownPopupForm;
StackLayoutElement stack = new StackLayoutElement();
stack.Orientation = Orientation.Horizontal;
RadButtonElement button1 = new RadButtonElement();
button1.Text = "Button1";
button1.StretchHorizontally = false;
button1.StretchVertically = false;
stack.Children.Add(button1);
DockLayoutPanel.SetDock(button1, Telerik.WinControls.Layouts.Dock.Bottom);
button1.StretchHorizontally = true;
form.SizingGripDockLayout.Children.Insert(1, button1);
return form;
}
}
Should you have further questions please let me know.
Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik
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