getting output of first two textboxes in the 3rd textbox when we click the button

thanks 4 sending.plz reply for the new post which is I just posted.

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if(textBox1.Text.Trim() != string.Empty && textBox2.Text.Trim() != string.Empty )

{

int sum = int.Parse(textBox1.Text.Trim())+ int.Parse( textBox2.Text.Trim());

textBox3.Text = sum.ToString();

}

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am doing the same what u posted, but it came error that

cannot implicitly convert type 'int' to 'string' .

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textbox3.text = int.parse(textbox1.text)+int.parse(textbox2.text);

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