using System;
using System.IO;namespace file
{
class Program
{
static void Main(string[] args)
{
DriveInfo[] drives = DriveInfo.GetDrives();
Console.WriteLine("驱动器名\t 类型\t 格式\t 总共空间\t 可用空间");
foreach (DriveInfo di in drives)
{
Console.WriteLine(string.Format("{0}\t{1}\t{2}\t{3}\t{4}"),di.Name,di.DriveType,di.DriveFormat,di.TotalSize,di.TotalFreeSpace);
}
}
}
}本人初学,书中的例子怎会提示错误讯息如下:
Unhandled Exception: System.FormatException: Index (zero based) must be greaterthan or equal to zero and less than the size of the argument list.
at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String fo
rmat, Object[] args)
at System.String.Format(IFormatProvider provider, String format, Object[] arg
s)
at System.String.Format(String format, Object[] args)
at file.Program.Main(String[] args) in D:\myweb\donet\console\file\file\Progr
am.cs:line 14
Press any key to continue . . .
请问是什么原因?
using System.IO;namespace file
{
class Program
{
static void Main(string[] args)
{
DriveInfo[] drives = DriveInfo.GetDrives();
Console.WriteLine("驱动器名\t 类型\t 格式\t 总共空间\t 可用空间");
foreach (DriveInfo di in drives)
{
Console.WriteLine(string.Format("{0}\t{1}\t{2}\t{3}\t{4}"),di.Name,di.DriveType,di.DriveFormat,di.TotalSize,di.TotalFreeSpace);
}
}
}
}本人初学,书中的例子怎会提示错误讯息如下:
Unhandled Exception: System.FormatException: Index (zero based) must be greaterthan or equal to zero and less than the size of the argument list.
at System.Text.StringBuilder.AppendFormat(IFormatProvider provider, String fo
rmat, Object[] args)
at System.String.Format(IFormatProvider provider, String format, Object[] arg
s)
at System.String.Format(String format, Object[] args)
at file.Program.Main(String[] args) in D:\myweb\donet\console\file\file\Progr
am.cs:line 14
Press any key to continue . . .
请问是什么原因?
Console.WriteLine(string.Format("{0}\t{1}\t{2}\t{3}\t{4}",di.Name,di.DriveType,di.DriveFormat,di.TotalSize,di.TotalFreeSpace)); Unhandled Exception: System.IO.IOException: The device is not ready. at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.__Error.WinIODriveError(String driveName, Int32 errorCode)
at System.IO.DriveInfo.get_DriveFormat()
at file.Program.Main(String[] args) in D:\myweb\donet\console\file\file\Progr
am.cs:line 14这又是为啥?