CODEWITHSUNDEEP
c#formscontrolsdynamically-generated
cranckstorm
cranckstorm

Reputation: 311

Removing Controls from Form (Doesn't hit every Control I want to remove)

I am dynamically adding some Controls to my Form and it works quite well but when I want to remove them again, it only removes a few of them in a weird (random) pattern (2 controls here, 2 there,...).

I tried using:

foreach (Control item in this.Controls.OfType<Control>())
        {
            if (item.Tag == "potentiallyRemove")
                this.Controls.Remove(item);
        }

And yes the controls I want to remove have all set the "Tag" Attribute.

I also tried to remove only the PictureBoxes:

foreach (Control item in this.Controls.OfType<PictureBox>())
        {              
                this.Controls.Remove(item);
        }

I don't want to use this.Controls.Clear() because I have an heading line which i don't want to remove.

Is this a bug or something like that and if yes, is there any workaround?

Upvotes: 1

Views: 81

Answers (1)

Manuvo
Manuvo

Reputation: 889

to avoid errors: Add the controls to an array and then remove them.

try this:

    List<Control> controlsToBeRemoved = new List<Control>();
    foreach (Control item in this.Controls.OfType<PictureBox>())
    {
        controlsToBeRemoved.Add(item);
    }

    foreach (Control item in controlsToBeRemoved)
    {
        this.Controls.Remove(item);
    }

Upvotes: 1

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