Disabled Style on controls.

[Phillip Foster]

I was curious if there was an easy way to change the "disabled" style of controls like "DateTimePicker", "DropDownListBox",etc.

Basically I want them to be ReadOnly without having to have that Grey backcolor, but obviously just changing the backcolor doesn't work.

Is there a simple way to do this?

[Stefan]

Hi Phillip,

Thank you for writing.

You can make RadDateTimePicker read-only without making the control disabled, by setting the ReadOnly property of the TextBoxItem:

radDateTimePicker1.DateTimePickerElement.TextBoxElement.TextBoxItem.ReadOnly = true;

Additionally, you can subscribe to the Opening event of the control, where you can check whether you made the TextBoxItem ReadOnly, and if it is, cancel the drop down:

void radDateTimePicker1_Opening(object sender, CancelEventArgs e)
{
    if (radDateTimePicker1.DateTimePickerElement.TextBoxElement.TextBoxItem.ReadOnly)
    {
        e.Cancel = true;
    }
}

In regards to RadDropDownList, the same approach can be used:

radDropDownList1.DropDownListElement.TextBox.TextBoxItem.ReadOnly = true;

and the PopupOpening event:

void radDropDownList1_PopupOpening(object sender, CancelEventArgs e)
{
    if (radDropDownList1.DropDownListElement.TextBox.TextBoxItem.ReadOnly)
    {
        e.Cancel = true;
    }
}

Alternatively, instead of making the TextBoxItem ReadOnly, you can set the DropDownStyle of the control to DropDownList, which does not allow editing the editor.

I hope you find this information useful. Should you have any other questions, do not hesitate to contact us.
 
All the best,
Stefan
the Telerik team