How to get Drive information in C# by using driveinfo class

Name	Description
AvailableFreeSpace	Indicates the amount of available free space on a drive.
DriveFormat	Gets the name of the file system, such as NTFS or FAT32.
DriveType	Gets the drive type.
IsReady	Gets a value indicating whether a drive is ready.
Name	Gets the name of a drive.
RootDirectory	Gets the root directory of a drive.
TotalFreeSpace	Gets the total amount of free space available on a drive.
TotalSize	Gets the total size of storage space on a drive.
VolumeLabel	Gets or sets the volume label of a drive.

Code Example

Add new window form and add some controls Labels, Groupboxes,buton(see picture).

Create load event of form, selectedindexChanged event of combox and paint event of groupbox on where chart is shown.

Now first we need to bind all available drive's name in combo box like this.

private void Form1_Load(object sender, EventArgs e)
{
    System.IO.DriveInfo[] drives = System.IO.DriveInfo.GetDrives();

    for (int i = 0; i <= drives.Length - 1; i++)
    {
        cmbCombo.Items.Add(drives[i].Name);
    }

    cmbCombo.SelectedIndex = -1;
}

For showing various information regarding selected drive we need to write this code on SelectedIndexChanged event of combo box.

Drive_Info = new System.IO.DriveInfo(cmbCombo.Text);
lblName.Text = Drive_Info.Name;

if (Drive_Info.IsReady)
{
    if (Drive_Info.VolumeLabel.Length > 0)
    {
        lblVolumeLabel.Text = Drive_Info.VolumeLabel;
    }
    else
    {
        lblVolumeLabel.Text = "None";
    }

    lblFileSystem.Text = Drive_Info.DriveFormat;
    lblType.Text = Drive_Info.DriveType.ToString();
    lblRootDir.Text = Drive_Info.RootDirectory.FullName;
    lblCapacity.Text = Drive_Info.TotalSize + " (Bytes)";
    lblAvalspace.Text = Drive_Info.TotalFreeSpace + " (Bytes)";

    long usedSpace = 0;
    usedSpace = Drive_Info.TotalSize - Drive_Info.TotalFreeSpace;
    lblUsedSpace.Text = usedSpace + " (Bytes)";

    Piemark = 360f * Drive_Info.TotalFreeSpace / Drive_Info.TotalSize;
    long ProgressCurrentValue = usedSpace * 100 / Drive_Info.TotalSize;
    IsInfoAvailiable = true;
}

We can also use Pie chart for showing used and free space in drive by various color using paint event and FillPie method of graphices class like this.

private void GroupBox3_Paint(object sender, PaintEventArgs e)
{
    Rectangle rect = new Rectangle(130, 50, 120, 50);

    if (IsInfoAvailiable)
    {
        e.Graphics.FillPie(Brushes.Fuchsia, rect, 0, Piemark);
        e.Graphics.FillPie(Brushes.Blue, rect, Piemark, 360 - Piemark);
        Application.DoEvents();
    }
}