CODEWITHSUNDEEP
c#wpfif-statementcheckbox
Shubham Yadav
Shubham Yadav

Reputation: 63

How to check for double checkbox IsChecked in if statement ? C#, WPF

How can I check for 2 or more checkBox IsChecked values inside single if statement in WPF C# ? I am trying to do like this but its not working.

 if ((symbols_cb.IsChecked ?? true) && (digits_cb.IsChecked ?? true))
 {
        MessageBox.Show("Check - Yes it is selected.");
 }

Here symbols_cb and digits_cb are check box and I want a message to be displayed while both the checkbox has been selected.

Upvotes: 1

Views: 1447

Answers (3)

Miguel Remirez
Miguel Remirez

Reputation: 393

the operator ?? not work as you want, this operator chek if left value is null and it is null return rigth value. you need do this:

if (symbols_cb.IsChecked && digits_cb.IsChecked)
{
    MessageBox.Show("Check - Yes it is selected.");
}

Edit: i did´t know that in WPF isChecked return bool?. try check value after check if IsChecked has value:

if (symbols_cb.IsChecked.HasValue ?? symbols_cb.IsChecked : false   &&
    digits_cb.IsChecked.HasValue ?? digits_cb.IsChecked : false )
{
    MessageBox.Show("Check - Yes it is selected.");
}

Upvotes: 1

rmojab63
rmojab63

Reputation: 3631

if this is your View:

<StackPanel>
    <CheckBox Name="symbols_cb" Checked="checkBox_CheckedChanged" Unchecked="checkBox_CheckedChanged" />
    <CheckBox Name="digits_cb" Checked="checkBox_CheckedChanged" Unchecked="checkBox_CheckedChanged"/>
</StackPanel>

you can handle the events in the following method:

    private void checkBox_CheckedChanged(object sender, RoutedEventArgs e)
    {
        if ((symbols_cb.IsChecked == true) && (digits_cb.IsChecked == true))
        {
            MessageBox.Show("Check - Yes it is selected.");
        }
    }

Upvotes: 1

Murad
Murad

Reputation: 543

Check this answer: 

if ((symbols_cb.IsChecked ?? false) && (digits_cb.IsChecked ?? false))
{
    MessageBox.Show("Check - Yes it is selected.");
}

Upvotes: 1

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