getting sum of text from all the dynamically generated control

Question

i have a windows form in which there are controls listed below panel1 button1 = add new mobiles button2 = ok When clicking on button1 an usercontrol is added. Y

Answer 1

Probably your "error" is that you're declaring g inside of the foreach loop, so you don't actually make any sum. Furthermore, you don't initialize it. Change your code to:

var g = 0;
foreach (Control ctrl in Controls)
{
    if (ctrl is UserControl1)
    {
        var myCrl = ctrl as UserControl1;
        g += Convert.ToInt32(myCrl.textbox2.Text);
    }
}
//Set your label's text

Answer 2

 int sum = 0;
        panel1.Controls.OfType<UserControl>().ToList().ForEach(
            x =>
            {
                TextBox ctl = x.Controls.OfType<TextBox>().Where(y => y.Name == "textbox2").FirstOrDefault();
                sum += (ctl == null ? 0 : (!String.IsNullOrEmpty(ctl.Text.Trim()) ? Convert.ToInt32(ctl.Text.Trim()) : 0));
            }
            );

Answer 3

double totalSumValue = 0;
foreach (Control ctrl in Controls)
{
    if (ctrl is UserControl)
    {
        var myCrl = ctrl as UserControl;
        totalSumValue  += Convert.ToInt32(myCrl.textbox3.Text);
    }
}
lblSumValue.text=totalSumValue.toString();