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copied!<p>You can create a method that takes a <a href="http://msdn.microsoft.com/en-us/library/system.windows.forms.control.aspx" rel="nofollow">Control</a> and a <a href="http://msdn.microsoft.com/en-us/library/system.drawing.color.aspx" rel="nofollow">Color</a> as a parameter, and anything that inherits from <code>Control</code> (i.e. <code>TextBox</code>, <code>DropDownList</code>, <code>Label</code> etc.) will work with this:</p> <pre><code>void SetControlBackgroundColour(Control control, Color colour) { if (control != null) { control.BackColor = colour; } } </code></pre> <p>In your example, you could use it like this:</p> <pre><code>private void TextBox1_Focused(object sender, EventArgs e) { SetControlBackgroundColour(sender as Control, Color.Gold); } </code></pre> <p>In response to the comments, you could then use this method in a recursive method that will set the background colour for each control on the form:</p> <pre><code>void SetControlBackgroundColourRecursive(Control parentControl, Color colour) { if (parentControl != null) { foreach (Control childControl in parentControl.Controls) { SetControlBackgroundColour(childControl, colour); SetControlBackgroundColourRecursive(childControl); } } } </code></pre> <p>And then call this function on your <code>Form</code> object (<code>this</code>) in your <code>Form1_Load</code> method (assuming the form is called <code>Form1</code>):</p> <pre><code>protected void Form1_Load(object sender, EventArgs e) { SetControlBackgroundColourRecursive(this, Color.Gold); } </code></pre>

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