Question

Am trying to add different numbers from different textbox, in a way that once the values are entered into each textbox, the summed value is displayed in a label showing the total value. eg. textbox1 + textbox 2 values to be displayed in label1. in C#. pls how do i go about this? thanks

Answer 1

Here’s a very simplistic approach using two text boxes. Assuming you have the event handler hooked up properly, this should work for you. There’s more elegant approaches for sure, but this should get you started.

private void textBox1_TextChanged(object sender, TextChangedEventArgs e)
{
    SumAndDisplay();
}

private void textBox2_TextChanged(object sender, TextChangedEventArgs e)
{
    SumAndDisplay();
}

private void SumAndDisplay()
{
    int a;
    int b;
    if (Int32.TryParse(textBox1.Text, out a) && Int32.TryParse(textBox2.Text, out b))
    {
        label1.Content = (a + b).ToString();
    }
}