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How to associate one TextBox with other TextBox?

Robin Purbia asked:

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Hey Guyz,
Help me out, I am a newbie to C#.
I am making one tool for some calculations. Suppose i hv 4 textboxes,
textBox1 contains some text and textBox2 will update SUM of textBox1, similarly textBox3 contains some text and textBox4 will update SUM of textBox3 and so on....

Is there any way i can associate one textbox with other. right now i am giving a common TextChanged event on textBox1 and textBox3.... like this..

TextBox TempTextBox;
private void textBox_TextChanged(object sender, EventArgs e)
            TempTextBox = (TextBox)sender; //TextBox in which text is updated
            if (TempTextBox.Text != "")
                // how can i update textBox2.text here???
                // Is there any way i can get textBox2 handle here???
                // or i can associate textBox1 with textBox2???
Tags: C#


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