C# - Dynamically Setting Usercontrol Property?

I have a user control in asp.net that i need to dynmically set properties for. The propety and property values are in a dictionary, for example:

Dictionary<string, string> propertyValues;
Control c = Page.LoadControl("~/Control.ascx")

I can currently set the properties on the control using reflection, however, with .net 4 and the new dynamic keyword, is there an easier way to do it, for example, something like this:

dynamic c = Page.LoadControl("~/control.ascx");
foreach(var itemin propertyValues)
{
c.item.key = item.value;
}

this obviously doesnt work because item.key is a string and not a property.