Question

I am adding ComboBoxes dynamically at runtime as shown below.
The problem that I am having is that i do not know which of the comboboxes the user is using.

For eg. The user decides to add 5 comboBoxes to the form, and then goes to the first comboBox,and selects a value, I need to retrieve the value of that comboBox.

What the below code is doing – My approach

I am adding a comboBox to a FlowlayoutPanel and the retrieve its name based on the mouse co-ordinates…. this by the way is not working… and I have no idea what to do.

Any help is greatly appreciated.

public partial class Form1 : Form
{
    int count = 0;

    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        count += 1;

        ComboBox cb = new ComboBox();
        cb.Name = count.ToString();
        cb.MouseHover += new EventHandler(doStuff);

        Label lb = new Label();
        lb.Text = count.ToString();

        flowLayoutPanel1.Controls.Add(cb);
        flowLayoutPanel1.Controls.Add(lb);
    }

    public void doStuff(object sender, EventArgs e)
    {
        label1.Text = flowLayoutPanel1.GetChildAtPoint(Cursor.Position).Name;
    }
  }
}

Answer 1

You could try:

cb.SelectionChangeCommitted += selectionChangedHandler

...

void selectionChangedHandler(object sender, EventArgs e) {
  ComboBox cb = (ComboBox)sender;
  label1.Text = cb.Name;
  // Do whatever else is needed with the combo box
}

The SelectionChangeCommitted event is “raised only when the user changes the combo box selection“, which sounds like what you’re after.