Question

Possible Duplicate:
Find a control in C# winforms by name

I will try to explain it.. So I have a for loop, and each time I want to load the textbox number equal with the cycle integer.

Here is my code:

for(int i=1 ; i<=indulok+1 ; i++)
{
    StreamWriter sw = new StreamWriter("futamok/"+comboBox1.Text + "/" + indulok + ".txt");
    sw.WriteLine(textBox1.Text);
    sw.Dispose();
}

Now I want to replace textBox1.Text to something like this:

sw.WriteLine(textBox + i + .Text);

But this is not working of course.

Answer 1

Here is an alternative that would find the control by name.

        for (int i = 1; i <= indulok + 1; i++)
        {
            if (this.Controls.ContainsKey("textBox" + i.ToString()))
            {
                TextBox txtBox = this.Controls["textBox" + i.ToString()] as TextBox;
                if (txtBox != null)
                {
                    string FileName = "C:\\" + i.ToString() + ".txt";
                    System.IO.File.WriteAllText(FileName, txtBox.Text);
                }
            }
        }

If your control is nested inside other controls (ie. a GroupBox), you may need to use the Find function

        for (int i = 1; i <= indulok + 1; i++)
        {
            Control[] controls = this.Controls.Find("textBox" + i.ToString(), true);
            if (controls.Length > 0)
            {
                TextBox txtBox = controls[0] as TextBox;
                if (txtBox != null)
                {
                    string FileName = "C:\\" + i.ToString() + ".txt";
                    System.IO.File.WriteAllText(FileName, txtBox.Text);
                }
            }
        }