I have a combobox which is has itemtemplate applied on it and is bind to a List of entity return using linq. i m using mvvm. It is bind to it successfully but when i set the selected value of it from code at runtime to show the selected value coming from db it doesn't select it. For reference here is my combobox xaml.

SelectedValue="{Binding Path=SelectedManufacturer}"
Grid.Column="3" Grid.Row="2" Margin="20,9.25,68,7.75"
ItemTemplate="{StaticResource ManufacturerDataTemplate}" TabIndex="6"/>

Here is my part from code behind from viewModel.

List currentManufacturers = new List();

tblManufacturer selectedManufacturer = null;

public List CurrentManufacturers { get { return currentManufacturers; } set { currentManufacturers = value; NotifyPropertyChanged("CurrentManufacturers"); } }

    public tblManufacturer SelectedManufacturer
    {
        get
        {
            return selectedManufacturer;
        }
        set
        {
            selectedManufacturer = currentManufacturers.Where(mm => mm.ManufacturerID == Convert.ToInt32(selectedDevice.tblManufacturer.EntityKey.EntityKeyValues[0].Value)).First();
            NotifyPropertyChanged("SelectedManufacturer");
        }
    }