Question

Okay so I am currently trying to make checkboxes based on if a string can be soon or not, however the data for each row in my grid will be different everytime so I can’t set it to check one specific String, I was thinking along the lines of checking if that string was not nulled or empty but I don’t know how to do this, I have an error in my code on the if (string.Equals line as I am unsure how to finish this off.

public class StringToVisibilityConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if (value != null && value is string)
        {
            var input = (string)value;
            if (string.Equals
            {
                return Visibility.Collapsed;
            }
            else
            {
                return Visibility.Visible;
            }
        }

        return Visibility.Visible;
    }

Answer 1

.NET 4.0:

if (string.IsNullOrWhitespace(myString))

.NET pre 4.0:

if (string.IsNullOrEmpty(myString))

Though, I would write the logic differently (some checks are not needed):

var input = value as string;
if (input == null || string.IsNullOrWhiteSpace(input))
{
    return Visibility.Collapsed;
}
else
{
    return Visibility.Visible;
}