CODEWITHSUNDEEP
c#winforms
TnD_Guy
TnD_Guy

Reputation: 113

Uncheck all checkBoxes with C#

I am trying to write a code which will uncheck all checkBoxes in my form when a button is clicked. I know that I could do

checkBox1.Checked = false;
checkBox2.Checked = false;
checkBox3.Checked = false;

and so on, but I have about 35 checkBoxes, so I was hoping to use a simpler code. I keep finding stuff online that looks like this;

foreach (Control cBox in this.Controls)
{
    if (cBox is CheckBox)
    {
        ((CheckBox)cBox).Checked = false;
    }
}

And I was hoping to use something like that, instead of writing checkBox1.Checked = false; about 70 times (because I have 2 buttons, both of which need to do various things and then uncheck all the boxes.

I saw another solution that involved a Stack Panel or some type of code that looked more like Javascript or HTML than C#, and also seemed to involved writing out each checkBox.Checked status as its own line, which doesn't save me any lines of code.

Any tips would be appreciated. Thanks all :)

Upvotes: 0

Views: 11555

Answers (2)

JohnyL
JohnyL

Reputation: 7142

You can use C# 7.0+ pattern matching:

foreach(Control control in controls)
{
    if (control is CheckBox chk) chk.Checked = false;
}

Upvotes: 1

TnD_Guy
TnD_Guy

Reputation: 113

Answering my own question with some info from my new pal @HandbagCrab:

foreach (Control cBox in tabPage1.Controls)
{
if (cBox is CheckBox)
    {
        ((CheckBox)cBox).Checked = false;
    }
}

Adding the tabPage1 fixed my issue. Before, I had been using this.Controls which limited access to controls only within that dependency. I was still able to control other things based on the checkBoxes by naming them individually like checkBox1.Checked = false;, but this was only because I called to them by name, rather than asking the code to look through all Controls.

Upvotes: 3

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