C# :: Entity Framework - Select Specific Column In Tables

I need to show in a comboBox thats shows infor from Entity framework but i need to select a specific colum in the tables..

All in C# visual studio xaml form

So I created a var but i get and output: name of programe.NLHEntities

using (var context = new NLHEntities()) {
var blog = context.EtagesChambres
.Where(b => b.TypeChanbre == "Prive")
.FirstOrDefault();
textBox2Type.Text = Convert.ToString(blog);// i put a text box to see what the output would be..
}