Set SelectedVaon page load eventlue property

[Edwin]

I need to set RadComboBox SelectedValue property with URL parameter value:

ComboBox OnLoad event:

someComboBox.DataSource = GetDataList();
someComboBox.DataBind();

ComboBox OnDataBound event:

someComboBox.ClearSelection();
someComboBox.Text = string.Empty;
someComboBox.SelectedValue = valueFromUrlParameter;

After page loads ComboBox is populated with data from GetDataList(), but selected value is first item in the list. It is intersting if i step through these methods in debugging mode, then value is correctly selected.

[Kalina]

Hi Edwin,

I suppose that this happens because the RadComboBox that you use is read-only.
When the control is read-only there is always a selected item in it - and at initial page load this is the  first item.

If you want to set the selected item at RadComboBox using some value obtained from Url - you can handle the OnDataBound event in this way:

protected void someComboBox_DataBound(object sender, EventArgs e)
{
    var someComboBox = (RadComboBox)sender;
    someComboBox.Items.FindItemByValue("valueFromUrlParameter").Selected = true;
}

Regards,
Kalina
the Telerik team