Question

can you help me here..
I have a 5 textbox how will you automatically get the sum of those textbox who has a value and display it to textboxtotal. Like when you enter a number in textbox1 the value displays on the textboxtotal and when you enter a value on another textbox it automatically get the sum and so on…. and when you clear the value you entered on one textbox the textboxtotal will be updated..

Hope you can help me

Answer 1

You can do it like this for adding values –

    public void AddValues()
    {
        int val1, val2, val3, val4, val5;

        int.TryParse(textBox1.Text, out val1);
        int.TryParse(textBox2.Text, out val2);
        int.TryParse(textBox3.Text, out val3);
        int.TryParse(textBox4.Text, out val4);
        int.TryParse(textBox5.Text, out val5);

        textboxtotal.Text = (val1 + val2 + val3 + val4 + val5).ToString();
    }

Now, for other part of your question, just call AddValues() in TextChanged event of your textboxes.