Passing listview item to textbox in another form-CodePudding

I'm currently working on an application that shows whether colleagues are present at work. To make it a bit 'easy' to use for the one who's going to manage it, I want the user to be able to double click a listview item of a user, that prompts a window where the status of that person can be changed.

It was fairly easy to prompt a messagebox with the abbreviation of the selected person (which acts as a primary key for the database used). However, I want this abbreviation to be passed over to the textbox in that other window.

This is what I use to launch the window to change the employee status:

frmStatusEdit SE = new frmStatusEdit();
            SE.Show();

Keep in mind tho: this code works fine; the window launches without any issue. However, upon doube clicking a user, the window launches without the textbox containing its abbreviation.

For some reason I can't get this to work, despite using this line, which worked succesfully with the messagebox:

MessageBox.Show(lvEmployees1.SelectedItems[0].Text);

When I use this (with SE referring to the other window), nothing happens:

        if (lvEmployees1.SelectedItems.Count > 0)
        {
            string listItem = lvEmployees1.SelectedItems[0].Text;
            SE.tbxAbbrevEmployee.Text = listItem;

        }

I've been searching for a solution and came across several, but none seem to fix the issue. No error message is shown either, making it even more difficult to find out what I do wrong.

Anyone who has an idea what I might be doing wrong? I'm not very experienced with coding, so it's easy to forget things in my case.

CodePudding user response：

Try this, take the code from the button click to the list view double click:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        var form2 = new Form2
        {
            Message = "Hello World"
        };

        form2.ShowDialog();
    }
}

public partial class Form2 : Form
{
    public string Message { get; set; } = "";

    public Form2()
    {
        InitializeComponent();
    }

    private void Form2_Load(object sender, EventArgs e)
    {
        textBox1.Text = Message;
    }
}

Another option for Form2:

public partial class Form2 : Form
{
    private string _message = "";

    public string Message
    {
        get { return _message; }
        set
        {
            _message = value ?? "";
            textBox1.Text = _message;
        }
    }

    public Form2()
    {
        InitializeComponent();
    }
}