How to get Text from Textbox created during runtime

Question

I have created WinForm App in which user can set how many textboxes he want (Range 1-99) I am using this code to create Textboxes during runtime

  for (int i = 0         


        

Answer 1

This may work, I built a separate class to store the control and its value, then you can work out the values independently from the rest of the form. You need to trigger the calculations though:

    private List<InfoTextBox> activeTextBoxes = new List<InfoTextBox>();
    public Form1()
    {         
        for (int i = 0; i < Calculation.Num; i++)
        {
            TextBox txtRun = new TextBox();
            txtRun.Name = "txtBox" + i;
            txtRun.Location = new System.Drawing.Point(35, 50 + (20 * i) * 2);
            txtRun.Size = new System.Drawing.Size(75, 25);
            this.Controls.Add(txtRun);
            InfoTextBox iBox = new InfoTextBox();
            iBox.textbox = txtRun;
            activeTextBoxes.Add(iBox);
        }
    }

    public class InfoTextBox
{
    private double _textboxValue;
    public TextBox textbox { get; set; }
    public double TextBoxValue { get { return _textboxValue; } set { _textboxValue = setValue(value); } }

    private double setValue(double invalue)
    {
        return invalue / 100;
    }
}

Answer 2

var sum = this.Controls.OfType<TextBox>()
    .Where(t => char.IsDigit(t.Name.Reverse().Take(1).FirstOrDefault())
        && t.Enabled)
    .Select(t =>
    {
        double i;
        if (!double.TryParse(t.Text, out i)) { return 0d; }
        return i / 100d;
    })
    .Sum();