Any way to clear all fields in a form at once?

Question

i just started learning C# and i was wondering if it's possible to clear the content of all the textboxes for example in my form.

I know how to clear one by one but it's not practical for me.

thanks!

edit: I found my answer thank you all very much

_foreach(TextBox t on yourForm.Controls.OfType()) t.Text = "";_ — Steve, Apr 01 '16 at 16:20

score 4 · Answer 1 · answered Apr 01 '16 at 16:20

If you only want to clear TextBoxes you can do it easily like this:

foreach(TextBox tb in this.Controls.OfType<TextBox>())
    tb.Text = string.Empty;

But that will only clear all the TextBoxes that are directly on the Form and not inside a GroupBox or Panel or any other container.

If you have TextBoxes inside other containers you need to recurse:

private void ClearTextBoxes(ControlCollection controls)
{
    foreach(TextBox tb in controls.OfType<TextBox>())
        tb.Text = string.Empty;
    foreach(Control c in controls)
        ClearTextBoxes(c.Controls);
}

Call this like ClearTextBoxes(this.Controls);

I didn't know you can use OfType, this is certainly new for me, very interesting, thank you a lot sir ( i can't vote you up sadely ) — Àndres, Apr 01 '16 at 16:35

score 4 · Accepted Answer · edited Apr 07 '16 at 12:10

4

You can use the following loop to clear all the textbox objects in your active form:

foreach (Control c in this.Controls) 
{
    if (c.GetType() == typeof(TextBox))
    {
        c.Clear();
    }
}

You can also use the loop inside a function and give it a Boolean return value to test if it was successfuly executed.

edited Apr 07 '16 at 12:10

Orkun Bekar

1,447
1
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answered Apr 01 '16 at 16:22

Ahmed Aboumalek

613
4
21

I read this somewhere I think but didn't remember it, this is exactly what I was looking for, can I use this to clear all the textboxes for example in all the forms? – Àndres Apr 01 '16 at 16:29
1

edit: not sure actually, try removing the keyword `this` in `this.Controls`, might do the trick. Maybe another person can help you with it – Ahmed Aboumalek Apr 01 '16 at 17:19

score 1 · Answer 3 · edited May 23 '17 at 11:45

1

I bet you are looking for a solution similar to this one : Foreach Control in form, how can I do something to all the TextBoxes in my Form?

What you want to do is loop through all the controls in the Form, if the control is a TextBox you want to clear it

edited May 23 '17 at 11:45

Community

1
1

answered Apr 01 '16 at 16:20

MrSykkox

528
4
14

score 1 · Answer 4 · edited Apr 08 '20 at 10:49

1

private void ClearTextBoxes(ControlCollection controls)
{
    foreach(control c in Controls)
        if(c is TextBox)
            c.Clear();
}

edited Apr 08 '20 at 10:49

Olemak

2,005
1
17
20

answered Apr 08 '20 at 09:57

Hassan Kazmouhi

11
2

score 0 · Answer 5 · answered Apr 23 '21 at 13:10

If you need to clear just what you want you can use "Tag" for that. Just mark your controls with tag "clear":

            foreach (Control c in Controls)
        {
            if (c.Tag == "clear")

            {
                c.Text = string.Empty;
            }
        }

score 0 · Answer 6 · answered Feb 14 '22 at 15:21

0

my code is old school with panels and controls placed in the panels. This is how I went about it WebUtil.ResetControls(PanelMD.Controls);

answered Feb 14 '22 at 15:21

Timothy Odhiambo

19
6

score -1 · Answer 7 · edited May 25 '20 at 00:46

-1

Try this:

Form.Controls.OfType<Textbox>().ToList().ForEach(t => t.Text = "");

edited May 25 '20 at 00:46

Nimantha

6,405
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answered May 21 '20 at 08:15

spyrax10

5
6

1

While this code may solve the question, [including an explanation](https://meta.stackoverflow.com/questions/392712/explaining-entirely-code-based-answers) really helps to improve the quality of your post. Remember that you are answering the question for readers in the future, and those people might not know the reasons for your code suggestion – Muhammad Dyas Yaskur May 21 '20 at 08:50

Any way to clear all fields in a form at once?

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