CODEWITHSUNDEEP
c#wpfdata-bindingprogress-bar
Robert Strauch
Robert Strauch

Reputation: 12876

WPF progress bar is at 100 % after startup

In a WPF application I have defined a progress bar.

<ProgressBar Minimum="0" Maximum="{Binding TotalItemCount}" Value="{Binding CurrentItemCount, UpdateSourceTrigger=PropertyChanged}" />

However I have the problem that the progress bar is completely filled, i.e. 100 % directly after having started the application although I initially set the properties to the following values:

TotalItemCount = 0;
CurrentItemCount = 0;

As soon as I change TotalItemCount to 1 the progress bar is correctly set to 0 %. It seems to me that the control interpretes 0 from 0 being 100 % .

How can I correct initialze the progress bar to 0 %?

Upvotes: 2

Views: 1909

Answers (3)

Robert Strauch
Robert Strauch

Reputation: 12876

I did what some fellows propsed: the progress bar is hidden as long as the counter is 0.

Upvotes: 1

sasha_gud
sasha_gud

Reputation: 1735

You can write a converter for ProgressBar maximum value like this:

[ValueConversion(typeof(double), typeof(double))]
public class ProgressBarMaximumConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, CultureInfo culture)
    {
        if ((double)value == 0)
        {
            return 1;
        }

        return value;
    }

    public object ConvertBack(object value, Type targetType, object parameter, CultureInfo culture)
    {
        return null; 
    }
}

Upvotes: 1

Benny
Benny

Reputation: 317

public int MaxCountForProgress 
{
  get
  {
    if (TotalItemCount == 0)
      return int.MaxValue;
    return TotalItemCount;
  }
}

...

ProgressBar Minimum="0" Maximum="{Binding MaxCountForProgress}" Value="{Binding CurrentItemCount, UpdateSourceTrigger=PropertyChanged}"

Upvotes: 4

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