I have a WPF Project where I want to save DataRows from a DataGrid into an "options" class and retrieve those variables in another window.

Thats how I save my Variable from my DataGrid into my "options" Class (mainWindow.xaml.cs):

options.title = Convert.ToString((showEntries.SelectedItem as DataRowView).Row["title"]);

This Variable im saving via a getter and setter (options.cs):

public string Title
        {
            get { return title; }
            set { title = value; }
        }

And now I want to retrieve the saved variable in another window(updateDatabse.xaml):

private void getUpdateEntries()

        {
            Options returnValues = new Options();
            titleBox.Text = returnValues.Title;
        }

My Question is: Why is my textbox "titleBox" empty when running my code.

CodePudding user response：

If the logic of your task does not provide for the creation of several instances of classes (and as far as I understand your explanations, this is so), then you can use the Singlton implementation.
Example:

public class Options
{
    private string title;

    public string Title
    {
        get { return title; }
        set { title = value; }
    }

    private Options() { }

    public static Options Instance { get; } = new Options();
}

Options.Instance.Title = Convert.ToString((showEntries.SelectedItem as DataRowView).Row["title"]);

private void getUpdateEntries()
{
    titleBox.Text = Options.Instance.Title;
}

CodePudding user response：

You mixed things up.

    private void getUpdateEntries()
    
            {
                Options returnValues = new Options();
                returnValues.title = Convert.ToString((showEntries.SelectedItem as DataRowView).Row["title"]);
                titleBox.Text = returnValues.Title;
            }