Ilist validation wpf mvvm

class MainWindowViewModel : INotifyPropertyChanged
{
    public ICommand SaveItem
    {
        get { return new SimpleCommand(SaveItemExecute, CanSaveItem); }
    }

    public void SaveItemExecute()
    {
        //save
    }

    private bool CanSaveItem()
    {
        return IsValid;
    }

    //I set up here a breakpoint and it returns the correct value just once.
    //The application looked up on CanSaveItem all the time and except the first time, it returns wrong value
    private bool _isValid;
    public bool IsValid
    {
        get { return _isValid; }
        set
        {
            _isValid = value;
            OnPropertyChanged("IsValid");
        }
    }

    public string EnteredText { get; set; }

    public event PropertyChangedEventHandler PropertyChanged;

    protected virtual void OnPropertyChanged(string propertyName)
    {
        if (this.PropertyChanged != null)
        {
            this.PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
        }
    }

}

Source: coderedirect.com

Similar codes

0 vote162 views1 answer
C# parsing datetime from string irrespctive of culture
C#
0 vote220 views1 answer
Unity OVR Headset Emulator not working
C#Unity
0 vote168 views1 answer
Check if a string is only spaces c#
C#
0 vote174 views1 answer
C# remove all punctuation from string
C#
5 votes176 views4 answers
C# adding two arrays together
C#
0 vote162 views1 answer
How to turn components on and off in unity through code
C#
0 vote156 views1 answer
Defaultrequestheaders.authorization basic auth
C#
0 vote179 views1 answer
C# create a dummy class
C#
0 vote216 views1 answer
How to set the server url in dotnet core
C#
1 vote229 views3 answers
Get key in dictionary c#
C#