How to detect a control in a windows form and edit it c#

Question

My form

So, i have this Form with a TableLayoutPanel witch contains text boxes. I need the code to check if there is a textbox on my form and it is empty - then write text in it else {keep looking for an existing, empty text box} The order doesn't matter

Did you try to write a loop over the Controls collection of your TableLayoutPanel? — Steve, Feb 02 '20 at 17:27
`tableLayoutPanel1.Controls.OfType() .Where(x=>string.IsNullOrEmpty(x.Text)).ToList().ForEach(x=>x.Text = "something");` — Reza Aghaei, Feb 02 '20 at 17:48

score 0 · Answer 1 · answered Feb 02 '20 at 17:37

foreach (Control contr in tableLayoutPanel1.Controls)
        {
            if (contr is RichTextBox)
            {
                if ((contr as RichTextBox).Text == string.Empty)
                {
                    contr.Text = str_product;
                }
            }

        }

How to detect a control in a windows form and edit it c#

1 Answers1