How to add sublist in wpf using mvvm? - wpf

Question

namespace colourchanges
{
public class Group
{
public string Name { get; set; }
//its a class for adding parent list using group class
}
public class EmployeeTree : INotifyPropertyChanged
{
public EmployeeTree()
{
this.GroupStaff = new List<Group>();
GroupStaff.Add(new Group { Name = "Designers" });
GroupStaff.Add(new Group { Name = "Developers" });
GroupStaff.Add(new Group { Name = "Managers" });
//here we are declaring list for adding parent list
}
private List<Group> _GroupStaff;
public List<Group> GroupStaff
{
get { return _GroupStaff; }
set
{
_GroupStaff = value;
RaisePropertyChanged("GroupStaff");
}
}
//creates a list for parentlist
private Group _selectedGroupStaff;
public Group selectedGroupStaff
{
get { return _selectedGroupStaff; }
set
{
_selectedGroupStaff = value;
if (selectedGroupStaff.Name == "Designers")
{
City = "Chennai";
Country = "India";
Email = "Designer#gmail.com";
MobileNo = 9094117917;
Address = "Annanagar";
}
else if (selectedGroupStaff.Name == "Developers")
{
City = "Trichy";
Country = "India";
Email = "Developer#gmail.com";
MobileNo = 9094667878;
Address = "Koyambedu";
}
else if (selectedGroupStaff.Name == "Managers")
{
City = "Salem";
Country = "India";
Email = "Manager#gmail.com";
MobileNo = 9094154678;
Address = "Arumbakkam";
}
RaisePropertyChanged("selectedGroupStaff");
}
}//for selecting parent list in order to bind to textbox
private string _City;
private string _Country;
private string _Email;
private long _MobileNo;
private string _Address;
//properties of parent list to bind to textbox
public string City
{
get { return _City; }
set
{
_City = value;
RaisePropertyChanged("City");
}
}
public string Country
{
get { return _Country; }
set
{
_Country = value;
RaisePropertyChanged("Country");
}
}
public string Email
{
get { return _Email; }
set
{
_Email = value;
RaisePropertyChanged("Email");
}
}
public long MobileNo
{
get { return _MobileNo; }
set
{
_MobileNo = value;
RaisePropertyChanged("MobileNo");
}
}
public string Address
{
get { return _Address; }
set
{
_Address = value;
RaisePropertyChanged("Address");
}
}
///raise property changed event handler code
public event PropertyChangedEventHandler PropertyChanged;
public void RaisePropertyChanged(string propertyName)
{
if (this.PropertyChanged != null)
this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
//how to add sub list for designers developers and managers in the constructor

Answer 1

Let the following be your Model class
public class Group
{
private string _City;
private string _Country;
private string _Email;
private long _MobileNo;
private string _Address;
public Group()
{
Items = new ObservableCollection<Group>();
}
public ObservableCollection<Group> Items { get; set; }
}
and at the ViewModel's constructor, you can add the Items.
public EmployeeTree()
{
this.GroupStaff = new List<Group>();
Group rootGroup = new Group(){Name ="Manager"};
Group childGroup = new Group(){Name = "Developer"};
rootGroup.Items.Add(childGroup);
this.GroupStaff.Add(rootGroup);
}
This is for Hierarchical structure. Hope you are looking for this.
And your XAML should be like this
<TreeView Name="GroupTreeView">
<TreeView.ItemTemplate>
<HierarchicalDataTemplate ItemsSource="{Binding Items}">
<TextBlock Text="{Binding Name}" />
</HierarchicalDataTemplate>
</TreeView.ItemTemplate>