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    copied!<p>What I have come up with so far is something like this:</p> <pre><code>public static class extenstions { private static Dictionary&lt;Type, Action&lt;Control&gt;&gt; controldefaults = new Dictionary&lt;Type, Action&lt;Control&gt;&gt;() { {typeof(TextBox), c =&gt; ((TextBox)c).Clear()}, {typeof(CheckBox), c =&gt; ((CheckBox)c).Checked = false}, {typeof(ListBox), c =&gt; ((ListBox)c).Items.Clear()}, {typeof(RadioButton), c =&gt; ((RadioButton)c).Checked = false}, {typeof(GroupBox), c =&gt; ((GroupBox)c).Controls.ClearControls()}, {typeof(Panel), c =&gt; ((Panel)c).Controls.ClearControls()} }; private static void FindAndInvoke(Type type, Control control) { if (controldefaults.ContainsKey(type)) { controldefaults[type].Invoke(control); } } public static void ClearControls(this Control.ControlCollection controls) { foreach (Control control in controls) { FindAndInvoke(control.GetType(), control); } } public static void ClearControls&lt;T&gt;(this Control.ControlCollection controls) where T : class { if (!controldefaults.ContainsKey(typeof(T))) return; foreach (Control control in controls) { if (control.GetType().Equals(typeof(T))) { FindAndInvoke(typeof(T), control); } } } } </code></pre> <p>Now you can just call the extension method ClearControls like this:</p> <pre><code> private void button1_Click(object sender, EventArgs e) { this.Controls.ClearControls(); } </code></pre> <p>EDIT: I have just added a generic ClearControls method that will clear all the controls of that type, which can be called like this:</p> <pre><code>this.Controls.ClearControls&lt;TextBox&gt;(); </code></pre> <p>At the moment it will only handle top level controls and won't dig down through groupboxes and panels.</p>
 

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