Styling items programmatically

[Clive Hoggar]

Hi

I am building the list of items in the itemcreated event, as suggested in a reply to another post, using this approach:

combo.Items.Add(New RadComboBoxItem(sb.ToString, MemberID))

This is working fine so far, but I would like to change the background color (or text color) of the item based on some criteria. (Such as Member not paid up!)

My question is how to add the relevant style attribute to the item I am adding . I was expecting to find something like...

combo.Items.AddAttribute( something here)

but I didn't find it the right approach anywhere in the docs. Sorry if it is there somewhere.

Can someone help me out?

Thanks

Clive

[Princy]

Hi Clive,

Here is a sample code that i tried to change the Backgroundcolor of RadComboBoxItem in itemCreated event.

ASPX:

<telerik:RadComboBox ID="radCombobox1" runat="server" EnableLoadOnDemand="true" OnItemCreated="radcombobox_itemCreated" >
</telerik:RadComboBox>

C#:

protected void Page_Load(object sender, EventArgs e)
    {
        radCombobox1.Items.Add(new RadComboBoxItem("Item1", "1");
        radCombobox1.Items.Add(new RadComboBoxItem("Item2", "2"));
        radCombobox1.Items.Add(new RadComboBoxItem("Item3", "3"));
        radCombobox1.Items.Add(new RadComboBoxItem("Item4", "4"));
        radCombobox1.Items.Add(new RadComboBoxItem("Item5", "5"));
    }
protected void radcombobox_itemCreated(object sender, Telerik.Web.UI.RadComboBoxItemEventArgs e)
    {
        RadComboBoxItem item = e.Item;
        if (item.Text == "Item1")
        {
            item.BackColor = System.Drawing.Color.Red;
            item.ForeColor = System.Drawing.Color.White;
        }
    }

Hope this helps.

Regards,
Princy.

[Clive Hoggar]

Hi

Thanks

However the combo box is in the edit form of a grid, so this does not seem to work. Visual Studio cannot find the radcombobox_itemCreated event as a page event.

I tried inserting the sub and adding the call to the event in the combo box declaration. There were no errors but it seemed to
ignore it.

Can you give me a hint for this situation?

Thanks

Clive

[Princy]

Hello Clive,

Try the following code to populate combobox in editform and to change the color of the text.
aspx:

<EditFormSettings EditFormType="Template">
 <FormTemplate>
   <telerik:RadComboBox ID="combo" runat="server" onitemcreated="combo_ItemCreated"></telerik:RadComboBox>
 </FormTemplate>
</EditFormSettings>

C#:

protected void Radgrid1_ItemCreated(object sender, GridItemEventArgs e)
{
  if (e.Item is GridEditFormItem && e.Item.IsInEditMode)
  {
   GridEditFormItem item = (GridEditFormItem)e.Item;
   RadComboBox combo = (RadComboBox)item.FindControl("combo");
   combo.Items.Add(new RadComboBoxItem("Item1", "1"));
   combo.Items.Add(new RadComboBoxItem("Item2", "2"));
   combo.Items.Add(new RadComboBoxItem("Item3", "3"));
   combo.Items.Add(new RadComboBoxItem("Item4", "4"));
   combo.Items.Add(new RadComboBoxItem("Item5", "5"));
  }
}
protected void combo_ItemCreated(object sender, RadComboBoxItemEventArgs e)
{
  RadComboBoxItem item = e.Item;
  if (item.Text == "Item1")
  {
   item.BackColor = System.Drawing.Color.Red;
   item.ForeColor = System.Drawing.Color.White;
  }
}

Thanks,
Princy.