RadListDataItem backcolor

[Giovanni Riccò]

Hi,

I could easily change the RadListDataItem ForeColor by setting its ForeColor property, but I can't find out the way to change its backcolor, instead. What should I do?

Thanks, 
Giovanni

[Richard Slade]

Hi,

Well, you can change the BackColor property but I'd advise against doing it as you will then loose the style that is associated with the theme for selecting items.
If you want to, then you can change the backcolor in this way:

For Each item As RadListDataItem In Me.RadListControl1.Items
    item.VisualItem.SetValue(LightVisualElement.BackColorProperty, System.Drawing.Color.Red)
    item.VisualItem.SetValue(LightVisualElement.GradientStyleProperty, GradientStyles.Solid)
Next

but in my view, you'd be better off creating a theme for your items in Visual Style Builder. You can find out more about VSB at this link

hope that helps
richard

[Richard Slade]

Hello

Did this help? If so, please mark as answer so others can find the solution too
regards,
Richard

[Giovanni Riccò]

Hi Richard,

this didn't help, because VisualElement property is null, so I get an exception while attempting to set its background color.
I need an alternative.

All the best,
Giovanni

[Richard Slade]

Hello,

I'd advise using the Visual Stye Builder as above to build a new theme that has a background colour that you want to use. If you would like to use the code posted above however, then if you post me a sample of your code then I will happily take a look at it for you.

Thanks
Richard

[Giovanni Riccò]

Hi Richard,

I thought that there would be a simple way of doing this, just as for the ForeColor:

RadListControl radList = new RadListControl();
foreach(Object myObject in myList)
{
RadListDataItem item = new RadListDataItem();
radList.Items.Add(item);
//I can't access item.BackColor, only Font or ForeColor
item.ForeColor = Color.Red;
item.DataBoundItem = myObject;
}

I can't follow the same way because BackColor property is not exposed, and item.VisualItem is null. Is Visual Style Builder the only way?

All the best,
Giovanni

[Richard Slade]

Hi,

Straight after adding the items in the loop that you have in your code, please can you try adding this loop to set the colour. The VisualItem should not be null in this case.

foreach (RadListDataItem item in this.radList.Items) {
    item.VisualItem.SetValue(LightVisualElement.BackColorProperty, System.Drawing.Color.Red);
    item.VisualItem.SetValue(LightVisualElement.GradientStyleProperty, GradientStyles.Solid);
}

Richard

EDIT// I'd still say that going down the VSB route would be best though to avoid incompatibilities.

[Giovanni Riccò]

Hi Richard,

the VisualItem property is still null, even after the addItem loop. I understand that the only way is VSB, isn't it?
Could I suggest you to expose BackColor property just as ForeColor?

Best regards,
Giovanni

[Richard Slade]

Hello,

I don't work for Telerik. I'm just another user of the forums, but if you have a feature suggestion you can request one via a support ticket.

Can you confirm if you are using a RadDropDownList or a RadListControl
Your code indicates you are using a RadListControl, but I have the feeling you are using a RadDropDownList. Please can you confirm.
Thanks
Richard

[Giovanni Riccò]

Hi,

I'm using a RadListControl as you can see.

Giovanni

[Richard Slade]

Hello,

Please subscribe to the VisualItemFormatting event and add the code below

private void radListControl1_VisualItemFormatting(object sender, VisualItemFormattingEventArgs args)
{
    args.VisualItem.SetValue(LightVisualElement.BackColorProperty, System.Drawing.Color.Red);
    args.VisualItem.SetValue(LightVisualElement.GradientStyleProperty, GradientStyles.Solid);
}

Let me know if this works
thanks
Richard

[Giovanni Riccò]

Hi Richard,

this works!

Thanks a lot,
Giovanni

[Richard Slade]

Excellent, Glad to have been able to help
Richard

[Peter]

Hi Giovanni, I am glad to hear that this solved the issue. In case you need further assistance, please do not hesitate to contact us.

Richard, thank you for sharing your solution with the community.

Sincerely yours, Peter
the Telerik team