TextBox Binding in XAML

Question

Hi , Anyone please help me My textbox will show listview seleted item    TextBox Name = "txt1" HorizontalAlignment = "Left" Height = "23" Margin = "46,90,0,0" TextWrapping = "Wrap" Text ="{ Binding ElementName = _ PList , Path = SelectedItem . FirstName , Mode = TwoWay , UpdateSourceTrigger = PropertyChanged } " VerticalAlignment = "Top" Width = "120" Grid.Column = "1" Grid.RowSpan = "2" />    if I modify like this I can add new item TextBox Name = "txt1" HorizontalAlignment = "Left" Height = "23" Margin = "46,90,0,0" TextWrapping = "Wrap" Text ="{ Binding Path = Firstname , Mode = TwoWay , UpdateSourceTrigger = PropertyChanged } " VerticalAlignment = "Top" Width = "120" Grid.Column = "1" Grid.RowSpan = "2" />   my question is how to achieve both scenario in binding way   I want to connect First property to Firstname,Firstname is model class property   I have added below logic in my viewmodel  public string First
{
get { return _First; }
set { SetProperty( ref this . _First, value ); }
}   public void AddPerson()
{
this . PersonMaster . Add( new Person ()
{
FirstName = this . First
}
);
}

Mageshwaran R · Answer

Hi, Can you check with the below link: https://www.tutorialspoint.com/wpf/wpf_data_binding.htm

ketan borsdiya · Answer

Hi Karthikeyan, Create Person class property like below, private Person selectedPerson; public Person SelectedPerson { get { return selectedPerson;} set { selectedPerson = value;} } Bind selected item in ListView like below, SelectedItem="{Binding SelectedPerson,UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}" Bind your textbox using below sentence, Text="{Binding SelectedPerson.FirstName,UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}" Now, check Person class's ID entity if it zero then add new other wise update it

Rajeesh Menoth · Answer

Hi,   I think you can bind list in Background.  Please check the following reference.   Reference :   http://www.c-sharpcorner.com/uploadfile/rvemura.net/two-way-databinding-in-wpf/