public class Class1 { public double cal(double amount) { return((amount+(amount*0.01))); } } protected void TextBox1_TextChanged(object sender, EventArgs e) { Class1 c = new Class1(); TextBox2.Text = c.cal(Convert.ToDouble(TextBox1.Text)).ToString(); TextBox3.Text = c.cal(Convert.ToDouble(TextBox1.Text)).ToString(); } protected void Button1_Click(object sender, EventArgs e) { Class1 c = new Class1(); TextBox2.Text = c.cal(Convert.ToDouble(TextBox1.Text)).ToString(); }
var
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