我正在尝试使用c＃中的user32或kernal32查找文件扩展名，路径和文件大小。
我的场景：在网上上传一些文件（电子邮件，应用程序等等）时，我需要获取文件名，文件的路径和大小（文件大小是可选的）。我正在使用OpenFileDialog句柄，我可以检索要上传的所选文件的文件名。你能帮我检查文件的路径和大小吗？我能够找到OpenFileDialog如何使用这些句柄继续检索信息的句柄
请找到我的下面的代码（一些dll参考将没有用）：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Runtime.InteropServices;
using System.IO;
using System.Security.Principal;
using `enter code here`System.Diagnostics;
namespace Opendailoghandle
{
class Program
{
[DllImport("user32.dll")]
static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
[DllImport("user32.dll")]
static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern IntPtr SendMessage(HandleRef hWnd, uint Msg, int wParam, StringBuilder lParam);
// [DllImport("user32.dll", CharSet = CharSet.Auto)]
// public static extern int SendMessage(int hWnd, int msg, int wParam, IntPtr lParam);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern IntPtr GetDlgItem(IntPtr hwnd, int childID);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern int SendMessage(HandleRef hwnd, int wMsg, int wParam, String s);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern String SendMessage(HandleRef hwnd, uint WM_GETTEXT);
[DllImport("user32.dll", CharSet = CharSet.Auto)]
public static extern int SendMessage(int hWnd, int msg, int wParam, IntPtr lParam);
// to get file size import
[DllImport("kernel32.dll")]
static extern bool GetFileSizeEx(IntPtr hFile, out long lpFileSize);
[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr CreateFile(
[MarshalAs(UnmanagedType.LPTStr)] string filename,
[MarshalAs(UnmanagedType.U4)] FileAccess access,
[MarshalAs(UnmanagedType.U4)] FileShare share,
IntPtr securityAttributes, // optional SECURITY_ATTRIBUTES struct or IntPtr.Zero
[MarshalAs(UnmanagedType.U4)] FileMode creationDisposition,
[MarshalAs(UnmanagedType.U4)] FileAttributes flagsAndAttributes,
IntPtr templateFile);
[DllImport("kernel32.dll", SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
static extern bool CloseHandle(IntPtr hObject);
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Auto)]
public struct WIN32_FIND_DATA
{
public int dwFileAttributes;
public FILETIME ftCreationTime;
public FILETIME ftLastAccessTime;
public FILETIME ftLastWriteTime;
public int nFileSizeHigh;
public int nFileSizeLow;
public int dwReserved0;
public int dwReserved1;
public string cFileName; //mite need marshalling, TCHAR size = MAX_PATH???
public string cAlternateFileName; //mite need marshalling, TCHAR size = 14
}
public struct WIN32_FIND_DATA1
{
public int dwFileAttributes;
public System.Runtime.InteropServices.ComTypes.FILETIME ftCreationTime;
public System.Runtime.InteropServices.ComTypes.FILETIME ftLastAccessTime;
public System.Runtime.InteropServices.ComTypes.FILETIME ftLastWriteTime;
public int nFileSizeHigh;
public int nFileSizeLow;
public int dwReserved0;
public int dwReserved1;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 260)]
public string cFileName;
[MarshalAs(UnmanagedType.ByValTStr, SizeConst = 14)]
public string cAlternateFileName;
}
[DllImport("kernel32.dll", CharSet = CharSet.Auto)]
static extern IntPtr FindFirstFile(string lpFileName, out WIN32_FIND_DATA lpFindFileData);
[DllImport("kernel32.dll")]
static extern IntPtr FindFirstFile(IntPtr lpfilename, ref WIN32_FIND_DATA findfiledata);
[DllImport("kernel32.dll")]
static extern IntPtr FindClose(IntPtr pff);
[DllImport("User32.dll")]
public static extern bool SetForegroundWindow(IntPtr hWnd);
public static Process[] myProcess = Process.GetProcessesByName("program name here");
const uint WM_GETTEXT = 0x0D;
const uint WM_GETTEXTLENGTH = 0X0E;
const int BN_CLICKED = 245;
private const int WM_SETTEXT = 0x000C;
static void Main()
{
IntPtr hWnd = FindWindow(null, "Open");
if (hWnd != IntPtr.Zero)
{
Console.WriteLine("Open File Dialog is open");
IntPtr hwndButton = FindWindowEx(hWnd, IntPtr.Zero, "Button", "&Open");
Console.WriteLine("The handle of the Open button is " + hwndButton);
IntPtr FileDialogHandle = FindWindow(null, "Open");
IntPtr iptrHWndControl = GetDlgItem(FileDialogHandle, 1148);
HandleRef hrefHWndTarget = new HandleRef(null, iptrHWndControl);
//SendMessage(hrefHWndTarget, WM_SETTEXT, 0, "your file path");
IntPtr opnButton = FindWindowEx(FileDialogHandle, IntPtr.Zero, "Open", null);
SendMessage((int)opnButton, BN_CLICKED, 0, IntPtr.Zero);
int len = (int)SendMessage(hrefHWndTarget, WM_GETTEXTLENGTH, 0, null);
var sb = new StringBuilder(len + 1);
SendMessage(hrefHWndTarget, WM_GETTEXT, sb.Capacity, sb);
string text = sb.ToString();
//FileInfo f = new FileInfo(text);
DirectoryInfo hdDirectoryInWhichToSearch = new DirectoryInfo(@"c:\");
FileInfo[] filesInDir = hdDirectoryInWhichToSearch.GetFiles("*" + text + "*.*");
foreach (FileInfo foundFile in filesInDir)
{
string fullName = foundFile.FullName;
Console.WriteLine(fullName);
}
var newName = DateTime.Now;
var Username = (WindowsIdentity.GetCurrent().Name);
//var contentArray = GetFileSizeB(text);
Console.WriteLine("The Edit box contains " + text+"\tsize:"+contentArray + "\nUser Name "+Username +"\tTime : "+newName );
}
else
{
Console.WriteLine("Open File Dialog is not open");
}
Console.ReadKey();
}
//public static uint GetFileSizeB(string filename)
//{
// IntPtr handle = CreateFile(
// filename,
// FileAccess.Read,
// FileShare.Read,
// IntPtr.Zero,
// FileMode.Open,
// FileAttributes.ReadOnly,
// IntPtr.Zero);
// if (handle.ToInt32() == -1)
// {
// return 1;
// }
// long fileSize;
// GetFileSizeEx(handle, out fileSize);
// CloseHandle(handle);
// return (uint)fileSize;
//}
}
}*
答案 0 :(得分：1)
检查您的FileInfo类，其中包含长度，路径，扩展名等属性。
循环浏览filesInDir中的文件的示例...
您可以获取fileName，Path，Length等，如下所示
int LengthInBytes = foundFile.Length;
希望这有助于......
string path = "C:\\Test";
DirectoryInfo di = new DirectoryInfo(path);
FileInfo[] filesInDir = di.GetFiles();
foreach (FileInfo foundFile in filesInDir)
{
string fullName = foundFile.FullName;
long fileLength = foundFile.Length;
string fileName = foundFile.Name;
string extension = foundFile.Extension;
/// etc
Console.WriteLine(fullName);
}
使用OpenFileDialog
OpenFileDialog ofd = new OpenFileDialog();
if (ofd.ShowDialog() == DialogResult.OK)
{
string fileName = ofd.FileName;
MessageBox.Show("FName: " + fileName);
}
这将是文件完整路径的字符串。如果您在OpenDialogBox上设置了MultiSelect，它将返回一个完整文件名的字符串数组。
答案 1 :(得分：0)
按照OP的进一步规范编辑
您可以使用System.IO.FileInfo课程获取文件信息。下面是示例代码。
private static void ShowFileDetails()
{
List<string> lstFiles = System.IO.Directory.GetFiles(@"D:\downloads").ToList(); //Need to pass the folder path to get the files.
foreach (string file in lstFiles)
{
System.IO.FileInfo fi = new System.IO.FileInfo(file);
Console.WriteLine(string.Format("Extension={0}\tFile Name={1}\tFile Size={2} bytes\tFile Path={3}\tCreated On={4}\tModified On={5}",
fi.Extension,
fi.Name,
fi.Length,
fi.FullName,
fi.CreationTime,
fi.LastWriteTime));
}
Console.ReadLine();
}