How to bind enums to combobox control

Deeraj S

6y670Windows Forms

How to bind enums to combobox controls in w desktop app

2 Replies

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Rajanikant Hawaldar6y ago
Accepted answer
Hey deeraj its simple try it. i have tried it in winform, you did not mention winforms or wpf or uwp
using System;
using System.Windows.Forms;

namespace LoadEnumIntoComboBox
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
        private enum Books
        {
            VisualStudio,
            Xamarin,
            AndriodStudio,
            django,
            Atom
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            comboBox1.Items.AddRange(Enum.GetNames(typeof(Books)));
            comboBox1.SelectedIndex = 0;
        }
    }
}
Harsh Shah6y ago
I have a helper class which exposes a property to get the enum type so that I can resolve the enum values.
public static Type GetEnum(DependencyObject obj)
{
   return (Type)obj.GetValue(EnumProperty);
}
public static void SetEnum(DependencyObject obj, string value)
{
obj.SetValue(EnumProperty, value);
}
public static readonly DependencyProperty EnumProperty =
DependencyProperty.RegisterAttached("Enum", typeof(Type),
typeof(EnumHelper), new PropertyMetadata(null, OnEnumChanged));
Get the values of the enum and set it as ComboBox ItemsSource.
private static void OnEnumChanged(DependencyObject sender,
DependencyPropertyChangedEventArgs e)
{
   var control = sender as ItemsControl;
   if (control != null)
   {
      if (e.NewValue != null)
      {
         var _enum = Enum.GetValues(e.NewValue as Type);
         control.ItemsSource = _enum;
      }
   }
}
Now the ComboBox will bind to the enum values, if we set the enum value in XAML.
public enum Designation
{
   SoftwareEngineer,
   TeamLead,
   ProductManager
}
"Designation" Margin="5" Grid.Row="5"
SelectedItem="{Binding Designation, Mode=TwoWay}"
local:EnumHelper.Enum="{x:Type local:Designation}">