Something like what I have done with DropDownLists for an eternity:
if (RadMultiSelect1.Items.FindChildByValue("value") != null)
{
RadMultiSelect1.Items.FindChildByValue("value").Selected = true;
}
Just looking to auto add the logged in user as already selected on page_load.
The above doesn't seem to work.
And as usual, I did dig through the documentation and DuckDuckGo it.