C# - Combobox index change after editing

Question

A moment ago someone answered my question on how to edit the combobox loaded with a text file, and how to save the recently edited line.

C#: Real-time combobox updating

The problem now is that I can only change one letter before it updates, and then the selectedindex changes to -1, so I have to select the line I was editing again in the dropdown list.

Hopefully someone knows why it's changing index, and how to stop it from doing that.

Answer 1

private int currentIndex;

public Form1()
{
    InitializeComponent();

    comboBox1.SelectedIndexChanged += RememberSelectedIndex;
    comboBox1.KeyDown += UpdateList;
}

private void RememberSelectedIndex(object sender, EventArgs e)
{
    currentIndex = comboBox1.SelectedIndex;
}

private void UpdateList(object sender, KeyEventArgs e)
{
    if (e.KeyCode == Keys.Enter && currentIndex >= 0)
    {
        comboBox1.Items[currentIndex] = comboBox1.Text;
    }
}