Check disk space in C#

Sample 1: Using System.Diagnostics.PerformanceCounter
//Get disk space info from remote server
System.Diagnostics.PerformanceCounter _pc;
float _freemegabytes;
float _freespacepercentage;
float _capacity = 0;
string result = "";
//Get free space percentage
_pc = new System.Diagnostics.PerformanceCounter("LogicalDisk", "% Free Space", serverdrive, servername);
_freespacepercentage = _pc.NextValue();
//Get free space in megabytes
_pc = new System.Diagnostics.PerformanceCounter("LogicalDisk", "Free Megabytes", serverdrive, servername);
_freemegabytes = _pc.NextValue();
//Calculate the capacity in gigabytes
_capacity = ((_freemegabytes / _freespacepercentage) * 100) / 1024;
//Calculate free space in gigabytes
_freemegabytes = _freemegabytes / 1024;
result = "" + servername + " " + serverdrive + " TotalS:" + _capacity.ToString("##.00") + "gb FreeS:" + _freemegabytes.ToString("##.00") + "gb. ";
 
Sample 2: Using System.IO.DriveInfo
//Get disk space info from local server
System.IO.DriveInfo dinfo = new DriveInfo("x:");
//Get disk size
double dsize = double.Parse(dinfo.TotalSize.ToString()) / 1073741824;
//Get free space
double dspace = double.Parse(dinfo.TotalFreeSpace.ToString()) / 1073741824;
result = "Logical Disk Size = " + dsize.ToString("##.00") + " GB";
result += " Logical Disk FreeSpace = " + dspace.ToString("##.00") + " GB";