converting string to a control name in C#

Possible Duplicate: Find a control in C# winforms by name Imagine that we have 4 textBoxes (and a button): textBox1:( Here we must enter the name of the textBox where we want to change background) textBox2:() textBox3:() textBox4:() In our first textbox we enter a name of any other TextBox and when we click on a button - backrground will change accordingly. Normally I'd do something like this: ``` private void button1_Click(object sender, EventArgs e) { string variableName = textBox1.Text(); if (variableName == "textBox1") { textBox1.BackColor = Color.Black; } else if (variableName == "textBox2") { textBox2.BackColor = Color.Black; } else if (variableName == "textBox3") { textBox3.BackColor = Color.Black; } else if (variableName == "textBox4") { textBox4.BackColor = Color.Black; } } ``` Another way - much simpler way do the same operation would be this: ``` private void button1_Click(object sender, EventArgs e) { string variableName = textBox1.Text(); variableName.BackColor = Color.Black; } ``` And that's all! So my question is: Is it possible to convert strings to "control names" as showed in example?