MetroProgressBar

The MetroProgressBar is an alternative progress bar with a different indeterminate style. Instead of creating a normal ProgressBar use:

<mah:MetroProgressBar Width="250"
                      Margin="4"
                      Maximum="100"
                      Minimum="0"
                      Value="42" />

or

<mah:MetroProgressBar Width="250"
                      Margin="4"
                      IsIndeterminate="True" />

Its indeterminate state looks like a ProgressRing but not circular.