Form of object created from another object in c#

Question

I have a form containing a flowlayoutpanel, and a user control A is added to the panel. In the constructor of user control A, a pointer to the same flowlayoutpanel is passed, so that user control A creates another user control B in the same flowlayoutpanel. The problem is that user control B is first added, then A.

Form1.cs

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

    private void addBtn_Click(object sender, EventArgs e)
    {
        flowLayoutPanel1.Controls.Add(new Graphic1(this.flowLayoutPanel1));


    }
}

Graphic1.cs

public partial class Graphic1 : UserControl
{
    public Graphic1(FlowLayoutPanel flowPointer)
    {
        InitializeComponent();

        flowPointer.Controls.Add(new Graphic2());
    }
}

Graphic2.cs is just a label

problem is that Graphic2.cs is added before Graphic1.cs in the panel

Why is it a problem that control B is added before control A? — Kane, May 21 '13 at 10:00
What GUI toolkit are you using? WinForms? Please add the appropriate tag. — O. R. Mapper, May 21 '13 at 10:01
Also, maybe [this SO question](http://stackoverflow.com/questions/425867/reordering-of-controls-within-a-flow-layout-panel) is related/solves your problem. — O. R. Mapper, May 21 '13 at 10:01
Display, because i m displaying an xml file, and user cntrol B is the attributes of an element, an first need to display the inner text (user controlA), then the attibutes (user control B) — user2029200, May 21 '13 at 10:01

score 0 · Accepted Answer · answered May 21 '13 at 10:07

I see three possible solutions:

If the constructor of control A receives the flow layout panel, have control A add itself to the flow layout panel, then add its additional controls.
Instead of adding the additional control in the constructor of control A, add a method such as InitializeLayout to control A. You can invoke that method after adding control A to the flow layout panel, and that method could then add any additional controls to the flow layout panel.
Capture any changes to the Parent property of control A (not sure whether that is possible; that depends on the GUI toolkit you are using) and add the additional controls when the parent of control A has changed.

Form of object created from another object in c#

1 Answers1