C# - Dynamic Controls (combobox + label)

Question

I make a code that aims to make a combobox with an associated label. How can I get the label to show the value found in the combo box.

There is provided a combobox and a label each time you press a button, so there will be x-number of comboboxes and labels.

ArrayList cboRunList = new ArrayList();
    ArrayList labRunList = new ArrayList();
    private void button1_Click(object sender, EventArgs e)
    {
        // Tilføjer ComboBoxe
        ComboBox cboRun = new ComboBox();
        string[] s = { "", "a", "b", "c", "d", "1", "2", "3", "4" };
        cboRun.DataSource = s;
        cboRun.Location = new System.Drawing.Point(10, 10 + (20 * c));
        cboRun.Size = new System.Drawing.Size(200, 25);
        cboRunList.Add(cboRun);
        cboRun.Click += new EventHandler(cboRun_Click);
        Controls.Add(cboRun);


        // Tilføjer label
        Label labRun = new Label();
        labRun.Name = "LabDyn" + c;
        labRun.Location = new System.Drawing.Point(270, 10 + (20 * c));
        labRun.Size = new System.Drawing.Size(1000, 20);
        labRunList.Add(labRun);
        labRun.Text = "LabDyn" + c;
        Controls.Add(labRun);
        c = c + 1;

We won't know how to make the changes to your existing code base without seeing your original code. Please post [a minimal example of what needs to change](http://stackoverflow.com/help/mcve), and fully explain what needs to be modifed. — gunr2171, Oct 01 '14 at 14:44
Whoever gives an answer, please include the line "stop using ArrayLists", please. — gunr2171, Oct 01 '14 at 14:52

score 2 · Answer 1 · edited May 23 '17 at 12:27

2

If you want some controls to be associated and work together, You need to create a UserControl. Which is why they are for.

Create a user control
Add Combobox and Label
Set the required properties,
Wire the events and add your associated code to reflect one's change in another.

You're done with creating a UserControl. Now wherever you need this ComboBox and Label together, you'll create a instance of YourNewUserControl and add it to the parent(typically a Form).

Also give importance to gunr2171's comment. Don't use ArrayList use List<T> instead for obvious reasons.

edited May 23 '17 at 12:27

Community

1
1

answered Oct 01 '14 at 15:01

Sriram Sakthivel

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Good answer, and might i suggest the parent be a flow layout panel, because it makes it so much easier to just add the controls and not worry about where you are adding them. – DidIReallyWriteThat Oct 01 '14 at 15:25

C# - Dynamic Controls (combobox + label)

1 Answers1