Input values in 3 textboxes and display the calculation result in 4th

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Hello everyone,

I recently made a website which calculates your home budget on the basis of various conditions. For the demo I made 4 boxes, 1st for salary and corresponding 2nd and 3rd for expenditures.
How can I input the values of 1st, 2nd n 3rd text boxes and display the subtracted value of 1st - (2nd + 3rd text box) into the fourth one?

Posted 2-Dec-12 7:03am

hi2anky

Updated 2-Dec-12 7:08am

André Kraak

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__TR__ 2-Dec-12 13:13pm

C# or VB.NET ?

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ridoy · Answer 1 · 2012-12-02T07:27:00

As you not mentioned which language you use i try it with C#,when you press a button the calculation is done and show the result in 4th textbox..

C#

protected void Button1_Click(object sender, EventArgs e)
{
    double value1, value2, value3, value4;
    value1 = Convert.ToDouble(TextBox2.Text);
    value2 = Convert.ToDouble(TextBox3.Text);
    value3 = Convert.ToDouble(TextBox4.Text);
    value4=value1-(value2+value3);
    TextBox5.Text = value4.ToString();
}