RadComboBox don't shows selected item

[Martin Horst]

Update: Ignore this post or close it. The problem was not the RadComboBox itself.

Best regards

Martin

Hi,

I've a RadComboBox inside a UserControl with the DropDropStyle=DropDownList. I added three elements and after that I selected the third one:

  radComboBoxItems.Add(new RadComboBoxItem("1", 1));
radComboBox.Items.Add(new RadComboBoxItem("2", 2));
radComboBox.Items.Add(new RadComboBoxItem("3", 3));
radComboBoxSelectedValue = 3;

I also tried:

  radComboBoxSelectedIndex = 2;

In both ways the the SelectedIndex is correct and when the ListBox appears the correct item is selected. But the ComboBox itself doesn't display the selected item. The funny thing is, that the same code works fine on a Windows Form. So, what's the problem there.

Regards

Martin

[Justin]

I'm having this same problem.

[Emanuel Varga]

Hello guys,

Justin are you using the RadComboBox or the RadDropDownList?
Are you using a data source for the control or items?

Please answer these questions and i will help you find a solution.

Best Regards,
Emanuel Varga

Telerik WinForms MVP

[Justin]

Yes, I am using the RadComboBox.

[Emanuel Varga]

Hello again Justin,

Sorry, I could not replicate this issue.

Please try the following and let me know if this is working for you:

using System;
using System.Windows.Forms;
using Telerik.WinControls.UI;

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        var userControl = new SomeUserControl();
        this.Controls.Add(userControl);
        userControl.Dock = DockStyle.Fill;
    }
}

public class SomeUserControl : UserControl
{
    private RadComboBox radComboBox;

    public SomeUserControl()
    {
        this.Controls.Add(radComboBox = new RadComboBox());
        radComboBox.Items.Add(new RadComboBoxItem("1", 1));
        radComboBox.Items.Add(new RadComboBoxItem("2", 2));
        radComboBox.Items.Add(new RadComboBoxItem("3", 3));
    }

    protected override void OnLoad(EventArgs e)
    {
        base.OnLoad(e);
        radComboBox.SelectedValue = 3;
    }
}

Or what are you doing differently.

Hope this helps, if you have any other questions or comments, please let me know,

Best Regards,
Emanuel Varga
Telerik WinForms MVP

[Ivan Todorov]

Hi Justin,

I was not able to replicate this issue as well. Please try Emanuel's suggestion and let us know if it worked for you. If it did not, then please provide us with more details about your case - a code snippet or a sample project. The version of the controls you are using might also be important.

I am looking forward to hearing from you.

Best wishes,

Ivan Todorov

the Telerik team

[Matthew]

Hi Martin,

Could you explain what the problem actually was?
I am having the exact same problem.

regards,
Matthew 

[Ivan Todorov]

Hello Matthew,

Thank you for writing.

As you can notice, the issue in this thread has not yet been identified. Therefore, if you experience any issues, you can open a new support ticket or a forum thread and describe the issue in detail. This will let us investigate it and provide you with proper support.

Additionally, if you are contacting us via a support ticket, you can attach a sample project which demonstrates the issue. This will help us in isolating the issue and provide you with a quicker response.

I am looking forward to hearing from you.

Greetings,
Ivan Todorov
the Telerik team