在 C# 中使用圆环图显示驱动器上的可用空间

Question

I'm writing an application in C# .NET that requires me to display some information regarding a drive and it's capacity/free space. Instead of displaying the information just as text, I wanted to display it as a doughnut chart. I've sort of got it working, however it does not display it like Windows does.

My code display it like this:

Windows displays it like this:

My source code for this is:

    private void ECSync_Load(object sender, EventArgs e)
    {
        DriveInfo Driveinformation = new DriveInfo("E");
        ShareDiskPieChart.Series["ShareDiskChart"].Points.AddXY(" ", Driveinformation.TotalSize);
        ShareDiskPieChart.Series["ShareDiskChart"].Points.AddXY(" ", Driveinformation.AvailableFreeSpace);
    }

If someone could tell me how to change the code to make it represent the capacity in a more realistic fashion, it would be greatly appreciated.

Answer 1

Thanks to @TaW for the answer, here is the code:

DriveInfo Driveinformation = new DriveInfo("E");
ShareDiskPieChart.Series[0].Points.Clear();
ShareDiskPieChart.Series["ShareDiskChart"].Points.AddXY(" ", Driveinformation.AvailableFreeSpace - Driveinformation.TotalSize);
ShareDiskPieChart.Series["ShareDiskChart"].Points.AddXY(" ", Driveinformation.AvailableFreeSpace);

And after formatting the E: drive it looks like this which is as expected:

And after writing some data I get this: