CODEWITHSUNDEEP
c#wpftreeviewhierarchicaldatatemplate
GrabnaMax
GrabnaMax

Reputation: 47

TreeView - Binding

I have a problem with binding a class to my TreeView. It doesn't really work, I get nothing shown.

This is my class:

public class Main
{
    public List<Child1> Ch1 { get; set; }

    public List<Child2> Ch2 { get; set; }

}

public class Child1
{
    public String CName { get; set; }
    public List<Grandson> Grandson { get; set; }
    public int Age { get; set; }
}

public class Grandson
{
    public String GName { get; set; }
    public List<Son> Son{ get; set; }
    public List<Daught> Daught{ get; set; }
    public int Age { get; set; }
}

public class Son
{
    public String OName { get; set; }
    public int Age { get; set; }
}

public class Daught
{
    public String DName { get; set; }
    public int Age { get; set; }
}

public class Child2
{
    public String C2Name { get; set; }
    public int Rights { get; set; }
}

As you see, I've got a lot of lists and lists in lists which I want to put in a TreeView.

<TreeView Grid.Row="1" ItemsSource="{Binding Main}" IsEnabled="{Binding TreeEnabled}" >
    <TreeViewItem Header="{Binding CName}" ItemsSource="{Binding Ch1}" >
        <TreeViewItem Header="{Binding GName}" ItemsSource="{Binding Grandson}" >
            <TreeViewItem Header="{Binding OName}" ItemsSource="{Binding Son}" >
            </TreeViewItem>
            <TreeViewItem Header="{Binding DName}" ItemsSource="{Binding Daught}"></TreeViewItem>
        </TreeViewItem>
    </TreeViewItem>
    <TreeViewItem Header="{Binding C2Name}" ItemsSource="{Binding Child2}"></TreeViewItem>
</TreeView>

I think I've got a problem with my bindings, but don't know what problem.

Upvotes: 0

Views: 171

Answers (2)

user10791205
user10791205

Reputation:

First of all : you must made ObservableCollection <T> when you want to bind a list to view , otherwise it wont show the changes to the view. (I do not know how familier you are with C# , then I say in <T> , T means any type you are making a list of them. e.g. ObservableCollection <Person>).

Second : If you bind the whole list to a treeview there is no need to bind one by one.

Third : Did you set your DataContext for you bindings any where ?

you need to do something like this in codebehind :

this.DataContext = new Class();

and then bind to this Class properties. This Class should be your main class in viewmodel.

Upvotes: 1

GrabnaMax
GrabnaMax

Reputation: 47

In my ViewModel i have a Instance of main also named main so it should bind it.

The Hierarchy is given i get i from the database the names are only examples.

The View must look like this

enter image description here

Upvotes: 0

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