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Override ComboBox Styles?

I have a Style in Window.Resources applied to all the ComboBox in the application. However, I have come across a situation where I need the styles in the Window.Resources applied to the ComboBox, but I need to disable one feature I have specifically set in the styles.
I want to be able to enter text into one ComboBox in the application.
Being that the ComboBox text editable part is actually a TextBox I set disabled the TextBox altogether: This style is specifically for the ComboBox style I have,
<Style x:Key="ComboBoxTextBoxStyle" TargetType="{x:Type TextBox}">
<Setter Property="IsEnabled" Value="False" />
<....More setters etc
I have also set in the ComboBox styles IsEditable to false. I had to apply this style to both the TextBox part of the ComboBox to the style work correctly. I have also included the code pointing to the static resource to x:Key="ComboBoxTextBoxStyle" shown above:
<Style TargetType="{x:Type ComboBox}">
<Setter Property="IsEditable" Value="False" />
<...More setter's
<Setter.Value>
<ControlTemplate TargetType="{x:Type ComboBox}">
<TextBox Style="{StaticResource ComboBoxTextBoxStyle}"
<...More styles applied here
So now I have a ComboBox that I want to be able to enter text into, so I set the XAML to this,
<ComboBox x:Name="Cmb" IsEditable="True"
ItemsSource="{Binding Source={x:Static viewModels:ShiftManagerViewModel.MyBindingList}}"
SelectedItem="{Binding UpdateSourceTrigger=PropertyChanged, Path=MySeletcProperty}" />
But, the ComboBox is not able to be able to enter text even though I have set the actuall ComboBox to IsEditable="True".
How do I override the styles to allow this one ComboBox enter text?

You would have to create a new Style which will inherit from that Style that already exists and apply it to that particular combox box, style would be like:
A better apporach is that your TextBox element in Style Template for ComboBox IsEnabled property should have binding to ComboBox IsEditable property :
<Style x:Key="ComboBoxTextBoxStyle" TargetType="{x:Type TextBox}">
<Setter Property="IsEnabled"
Value="{Binding Path=IsEditable, RelativeSource={RelativeSource AncestorType={x:Type ComboBox}}}" />
and then in xaml consuming side you can specify this style :
<ComboBox x:Name="Cmb" IsEditable="True"
ItemsSource="{Binding Source={x:Static viewModels:ShiftManagerViewModel.MyBindingList}}"
SelectedItem="{Binding UpdateSourceTrigger=PropertyChanged, Path=MySeletcProperty}" />

TreeView - Refresh the treeView and expanding the last selected - WPF

I have a treeview that need to refresh due to data changes. Is it
possible to refresh and select the last node that they were viewing when the tree view was been populated once again?
Thanks for any help.

For auto refresh you can create some ViewModel for treeView. Something like in my answer Binding a WPF TreeView to multiple Lists . To update selected item and expand it you should define in ViewModel IsSelected and IsExpanded properties (like Name property, but bool). And you should define ItemContainerStyle in your TreeView like this.
<TreeView.ItemContainerStyle>
<Style TargetType="{x:Type TreeViewItem}">
<Setter Property="IsSelected" Value="{Binding IsSelected, Mode=TwoWay}"/>
<Setter Property="IsExpanded" Value="{Binding IsExpanded, Mode=TwoWay}"/>
<Setter Property="HorizontalAlignment" Value="Left"/>
</Style>
</TreeView.ItemContainerStyle>

WPF DataGrid Combobox selectedItem

I have a DataGrid with a combobox assigned of Customer IDs, Each Customer ID may have many Account IDs which are assigned in their own combo box. All I want to do is, when a user selects a Customer ID from the combobox, the Account IDs are then updated with the specific CustomerID that was chosen.
I think I am nearly there with the code.
Here I have the itemsource of the customerId applied inside the combobox elementstyle. As you can see I have a property of SelectedItem when an Item is selected from the customer box.
<DataGridComboBoxColumn.ElementStyle>
<Style TargetType="ComboBox">
<Setter Property="ItemsSource"
Value="{Binding DataContext.EntityCollection,
RelativeSource={RelativeSource Mode=FindAncestor,
AncestorType=Window}}"/>
<Setter Property="DisplayMemberPath" Value="Name"/>
<Setter Property="SelectedItem" Value="{Binding SelectedItem}"></Setter>
<Setter Property="HorizontalAlignment" Value="Center"></Setter>
</Style>
</DataGridComboBoxColumn.ElementStyle>
So inside the Combobox of the Account Id, I am not sure where to put the SelectedItem.AID code...
I have put it inside the SelectedValueBinding property in the first line, but it doesnt work. do I need to put SelectedItem inside the Itemsource porperty inside the EditingElementStyle tag?
<DataGridComboBoxColumn SelectedValueBinding="{Binding SelectedItem.AID}" SelectedValuePath="SID" Header="SID" Width="70">
<DataGridComboBoxColumn.EditingElementStyle>
<Style TargetType="ComboBox">
<Setter Property="ItemsSource"
Value="{Binding DataContext.EntityCollection,
RelativeSource={RelativeSource Mode=FindAncestor,
AncestorType=Window}}"/>
<Setter Property="DisplayMemberPath" Value="AID"/>
</Style>
</DataGridComboBoxColumn.EditingElementStyle>
<DataGridComboBoxColumn.ElementStyle>
<Style TargetType="ComboBox">
<Setter Property="ItemsSource"
Value="{Binding DataContext.EntityCollection,
RelativeSource={RelativeSource Mode=FindAncestor,
AncestorType=Window}}"/>
<Setter Property="DisplayMemberPath" Value="AID"/>
<Setter Property="HorizontalAlignment" Value="Center"></Setter>
</Style>
</DataGridComboBoxColumn.ElementStyle>
However I could be way off, so any help I would be grateful.
Thanks

<Setter Property="ItemsSource" Value="{Binding DataContext.EntityCollection,
I'm not entirely sure if that is possible, though I would not recommend using that this way.
Bind your ViewModel in the code behind to the DataContext of your View. Now you can bind the ItemsSource to any ObservableCollection Property in your ViewModel. That'd probably be your EntityCollection
Well, when using a DataGridComboBoxColumn, all you need to do, is to tell this column where the data is located by binding the target property.
If you'd have a list of Customer applied to your DataGrid and your property is named ID, your markup might be as follows:
SelectedValueBinding="{Binding ID, Mode=TwoWay}"
Checking the Mode is highly required in order to transmit changes made to your property.
Now, to apply any changes to your other ComboBox, e.g. adding or creating items, you need to use another ObservableCollection and bind it to that second Combobox. If you done that, you can control the items of the second ComboBox when any changes are made to the first one.
Just a short sample how this might look:
private uint _ID;
public uint ID
{
get { return _ID; }
set
{
if (_ID == value) return;
_ID = value;
NotifyOfPropertyChange("ID");
// Do something with your second ComboBox.
// You could create another ObservableCollection and bind that to your second ComboBox and add some items representing the Account IDs
}
}
Don't forget to notify your View when making changes.
If that wasn't the answer you are looking for, please be more specific. Your actual question was very hard to read, I only understood the first paragraph and explained, how you can archive what you want to do.

Disable particular item in the ListBox

I bind list of objects to my ListBox in WindowsPhone application. This business object has one boolean property. Based on the Boolean property i need to set the IsEnabled property in the ListBoxItem.
Is there any way to achieve this in WindowsPhone ListBox ?

There're few ways to achieve this:
You can add the ListBoxItem by C# code and set the property properly.
In Xaml, inside the list box, place the following:
<ListBox.Resources>
<Style TargetType="ListBoxItem">
<Setter Property="IsEnabled" Value="{Binding Content.IsEnabled, RelativeSource={RelativeSource Self}}"/>
</Style>
</ListBox.Resources>
Here I assume that the property name in your model object is IsEnabled, change it according to its real name.

WPF Listview & Checkboxes - Binding issue when using relative source

I have a listview with two columns, one contains a textbox and the other a checkbox. These are bound to an ObservableCollection of a custom object containing a string for the textbox and a boolean for the checkbox.
All was working well until I tried having the check event of the checkbox highlight it's the row in the listview as in this article.
My problem is that checkbox no longer binds to the ObservableCollection. The textbox binds okay, but changing the checbox declaration from:
<CheckBox IsChecked="{Binding RestrictedEdit}"/>
to this:
<CheckBox IsChecked="{Binding RestrictedEdit, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type ListViewItem}}}"/>
stops the checkbox binding and the listview is displayed with the checkboxes all unchecked irrespectivate of status of the boolean. What am I doing wrong?

You are trying to bind to RestrictedEdit property, which ListViewItem doesn't have. This property is declared in view model, which is stored in DataContext, so this should work:
<CheckBox IsChecked="{Binding DataContext.RestrictedEdit,
RelativeSource={RelativeSource FindAncestor,
AncestorType={x:Type ListViewItem}}}"/>
However, I don't see any reason to use this code instead of simple IsChecked="{Binding RestrictedEdit}". CheckBox inherits DataContext from ListViewItem, so there is no reason to use relative source.

Let the binding as it is (no RelativeSource) and use rather a style or a DataTemplate having your custom object class as TargetType, and with a DataTrigger set on RestrictedEdit.
example with style :
<Style x:Key="MyStyle" TargetType="MyClass">
<Setter Property="BackGround" Value="White" />
<Style.Trigger>
<DataTrigger Binding="{Binding RestrictedEdit}" Value="False">
<Setter Property="BackGround" Value="Gray" />
</DataTrigger>
</Style.Trigger>
</Style>
Define this style, say, in your application resources (in App.xaml).
Then in your listview, use :
ItemContainerStyle="{StaticResource MyStyle}"