问题
I have a C# application that install Windows image. I have to choose the disk where the system will copied (C: or D: or ...) on the user interface. For that, it's ok.
Then i have to format the disk. I have to select with diskpart.exe the good physical disk associed to C:. But with diskpart, we choose the disk with number: select disk 0 or 1 or ...
How to make the connection between the good disk number and the letter choosen by users on the interface ?
I found Nothing on google. I tried to find an information with wmi Win32_DiskDrive
but nothing in common with diskpart detail disk .
Thank's
回答1:
Another solution instead of using ManagementObjectSearcher
is using DiskPart.exe
programatically, but my code is rather a static solution (would be better with regex) but will work a long time.
It requires a manifest file with higher execution privileges (Add new element > Application Manifest File and change requestedExecutionLevel
to <requestedExecutionLevel level="requireAdministrator" uiAccess="false" />
. for further information: https://stackoverflow.com/a/43941461/5830773)
Then you can use following code to get the drive list with DiskPart.exe
:
// execute DiskPart programatically
Process process = new Process();
process.StartInfo.FileName = "diskpart.exe";
process.StartInfo.UseShellExecute = false;
process.StartInfo.CreateNoWindow = true;
process.StartInfo.RedirectStandardInput = true;
process.StartInfo.RedirectStandardOutput = true;
process.Start();
process.StandardInput.WriteLine("list volume");
process.StandardInput.WriteLine("exit");
string output = process.StandardOutput.ReadToEnd();
process.WaitForExit();
// extract information from output
string table = output.Split(new string[] { "DISKPART>" }, StringSplitOptions.None)[1];
var rows = table.Split(new string[] { "\n" }, StringSplitOptions.None);
for (int i = 3; i < rows.Length; i++)
{
if (rows[i].Contains("Volume"))
{
int index = Int32.Parse(rows[i].Split(new string[] { " " }, StringSplitOptions.None)[3]);
string label = rows[i].Split(new string[] { " " }, StringSplitOptions.None)[8];
Console.WriteLine($@"Volume {index} {label}:\");
}
}
This gives following output like from DiskPart but you can customise it for your needs:
Volume 0 C:\
Volume 1 D:\
Volume 2 F:\
Volume 3 G:\
Volume 4 I:\
Volume 5 H:\
Now searching by drive letter is obvious:
public int GetIndexOfDrive(string drive)
{
drive = drive.Replace(":", "").Replace(@"\", "");
// execute DiskPart programatically
Process process = new Process();
process.StartInfo.FileName = "diskpart.exe";
process.StartInfo.UseShellExecute = false;
process.StartInfo.CreateNoWindow = true;
process.StartInfo.RedirectStandardInput = true;
process.StartInfo.RedirectStandardOutput = true;
process.Start();
process.StandardInput.WriteLine("list volume");
process.StandardInput.WriteLine("exit");
string output = process.StandardOutput.ReadToEnd();
process.WaitForExit();
// extract information from output
string table = output.Split(new string[] { "DISKPART>" }, StringSplitOptions.None)[1];
var rows = table.Split(new string[] { "\n" }, StringSplitOptions.None);
for (int i = 3; i < rows.Length; i++)
{
if (rows[i].Contains("Volume"))
{
int index = Int32.Parse(rows[i].Split(new string[] { " " }, StringSplitOptions.None)[3]);
string label = rows[i].Split(new string[] { " " }, StringSplitOptions.None)[8];
if (label.Equals(drive))
{
return index;
}
}
}
return -1;
}
Usage:
Console.WriteLine(GetIndexOfDrive(@"D:\")); // returns 1 on my computer
回答2:
To map between disk and logical drive(C:, D:, etc), you have to get the information from:
Win32_LogicalDisk
Win32_LogicalDiskToPartition
Win32_DiskPartition
in any order. These tables will have all information. It can be easily used using System.Management
in c# .
来源:https://stackoverflow.com/questions/46953723/c-sharp-and-diskpart-how-to-select-by-disk-label-and-not-by-a-number