Focus filteritem

[Kurt Bilde]

Hi,

 

I am using radfilter on a radlistview bound to a datasource. On pageload I use the following code to default show the filteritem Name from the datasource:

 

 

if (!IsPostBack)
{
       RadFilterTextFieldEditor editor = new RadFilterTextFieldEditor();
       RadFilterPartner.FieldEditors.Add(editor);
       if (!IsPostBack)
       {
              editor.FieldName = "NAME";
              editor.DataType = typeof(string);
              RadFilterContainsFilterExpression filter = new RadFilterContainsFilterExpression("NAME");
              filter.Value = "";

              RadFilterPartner.RootGroup.Expressions.Add(filter);
        }
}

 

 

My question is how I can set the focus on the NAME filteritem on pageload, so the user can start typing the filtertext, instead of manually click the filteritem and then typing the filtertext?

-Kurt

[Mira]

Hello Kurt Bilde,

Unfortunately the desired functionality is not supported with theRadFilter control.
Possible workaround in this case is to use the code below for setting the focus to the latest textbox:

protected void RadFilter1_PreRender(object sender, EventArgs e)
{
    var ctrl = ControlsOfType<ITextControl>(RadFilter1).Where(p => p.GetType() != typeof(LiteralControl));
    if (ctrl.Count() > 0)
        (ctrl.Last() as Control).Focus();
}
public IEnumerable<T> ControlsOfType<T>(Control parent) where T : class
{
    foreach (Control control in parent.Controls)
    {
        if (control is T)
        {
            yield return control as T;
            continue;
        }
        foreach (T descendant in ControlsOfType<T>(control))
        {
          yield return descendant;
        }
    }
}

I hope this works for you.

All the best,
Mira
the Telerik team