ComboBox Binding in WPF

Question

Hi,

I am not able to set the selected value of a combobox.

this is how i am doing.

ComboBox x:Name="cmbProjectStatus" ItemsSource="{Binding ItemListCollection}" 
         DisplayMemberPath="Name" 
         SelectedValuePath="ID" 
         SelectedValue="{Binding Path=ItemList.ID}"
         SelectedItem="{Binding Path=ItemList}" 
         HorizontalAlignment="Stretch" VerticalAlignment="Center" />

I am using MVVM pattern in my project

Please Help...

Answer 1

but wait, your selected value is defined because you set selecteditem and selectedvaluepath ;)you don't have to set selectedvalue, and
EDIT
ItemList seted as SelectedItem exists in ItemListCollection

This should work

   ComboBox x:Name="cmbProjectStatus" ItemsSource="{Binding ItemListCollection}" 
             DisplayMemberPath="Name" 
             SelectedValuePath="ID"
             SelectedItem="{Binding Path=ItemList}" 
             HorizontalAlignment="Stretch" VerticalAlignment="Center" />

if you want to get it worked in your case just override Equals method in your Item class like this

public class Item
    {
        ...
        public override bool Equals(object obj)
        {
            Item i = (Item)obj;
            if (i.ID == this.ID)
                return true;
            return base.Equals(obj);
        }
        ...
    }