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POUsercontrol runtime width and height
 

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    <p>I am trying to create a simple User Control (not WPF) in VS2008 which effectively is a <code>SplitContainer</code> with a button in <code>Panel1</code>, which when pressed, toggles the <code>Panel2Collapsed</code> property and resizes the control to the size of <code>Panel1</code>.</p> <p>Here are the bare bones of the control:</p> <pre><code>private int _openHeight; private int _closedHeight; public MyUserControl(bool open) { InitializeComponent(); _openHeight = this.Height; _closedHeight = splitContainer1.SplitterDistance; Open = open; } private bool _open; private bool Open { get { return _open; } set { _open = value; splitContainer1.Panel2Collapsed = !_open; this.Height = _open ? _openHeight : _closedHeight; } } private void button1_Click(object sender, EventArgs e) { Open = !Open; } </code></pre> <p>The problem is that <code>this.Height</code> in Runtime is the value which the control is in the User Control Designer, rather than what is set at Design-time in the main form's designer.</p> <p>Any help would be greatly appreciated.</p> <p><strong>UPDATE</strong></p> <p>Following on from Lucas' solution, this way means that the _openHeight is only set once, resulting in the desired effect:</p> <pre><code>private int? _openHeight; private int _closedHeight; public MyUserControl(bool open) { InitializeComponent(); //the _closedHeight doesn't change so can be defined in the constructor _closedHeight = splitContainer1.SplitterDistance; //set value Open = open; this.SizeChanged += new EventHandler(MyUserControl_SizeChanged); this.Load += new EventHandler(MyUserControl_Load); } void MyUserControl_SizeChanged(object sender, EventArgs e) { //this event is called BEFORE the _Load event so gets the height set in the designer // and not any changes at run time (e.g. when you collapse the control) if (_openHeight == null) _openHeight = this.Height; } private bool _open; private bool Open { get { return _open; } set { _open = value; if (_open) { //sets height only if it has been initialized if (_openHeight != null) this.Height = (int)_openHeight; } else { this.Height = (int)_closedHeight; } } } void MyUserControl_Load(object sender, EventArgs e) { //now that control is loaded, set height Open = Open; } private void button1_Click(object sender, EventArgs e) { Open = !Open; } </code></pre>
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    1. COHas the solution I suggested worked for you?
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    2. COJust tested your second solution and, with a bit of modification, it works. Is it proper practice to update your answer with my modified solution?
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    3. COJust make na **Update** in your question heading and update it with the answer you have and some description :).
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