Question

    public partial class FrmEditSiteParticulars : Form, INotifyPropertyChanged
    {

    public enum EntryTypes
    {
        Undefined,
        Site,
        Particular
    }

    private EntryTypes _EntryType;

    private EntryTypes EntryType { 
        get{return _EntryType;}
        set
        {
            if (value != _EntryType)
            {
                _EntryType = value;
                OnPropertyChanged("EntryType");
            }
        }
    }

    public event PropertyChangedEventHandler EntryTypeChanged;

    protected void OnPropertyChanged(string propertyName)
    {
        PropertyChangedEventHandler handler = EntryTypeChanged;
        if (handler != null)
            handler(this, new PropertyChangedEventArgs(propertyName));
    }
.
.
.
    public event PropertyChangedEventHandler PropertyChanged;
.
.
.

and I added

this.EntryTypeChanged += new 
     System.ComponentModel.PropertyChangedEventHandler(this.EntryType_Changed);

inside InitializeComponent method..

Now when I open the Designer

I clicked Ignore and Continue, it worked fine..

Now when I close and open the solution again, the eventHandler code I put in the InitializeComponent is missing..

What is the problem?

Answer 1

Look at this:

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()

There’s the answer. Put your code in the constructor, below InitializeComponent();.