打开filedialog来查找文件名的路径和扩展名
本文关键字：路径 扩展名 文件名 filedialog 查找 打开 | 更新日期: 2023-09-27 18:09:05
我试图在c#中使用user32或kernal32找到文件扩展名，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)我需要获取文件名，它的路径和文件的大小(文件的大小是可选的)。我使用OpenFileDialog处理，我可以检索要上传的选定文件的文件名。你可以帮我检索路径和大小的文件使用相同。我可以找到OpenFileDialog的句柄，如何使用这些句柄
请找到我下面的代码(一些DLL参考将不有用):
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;
//}
}
}*
检查您的FileInfo类，它包含属性，如长度，路径，扩展…
通过filesInDir…
文件循环的例子你可以得到文件名，路径，长度等，像下面
int LengthInBytes = foundFile.Length;
Hope This help…
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);
}
这将是文件的完整路径的字符串。如果你在OpenDialogBox上设置了MultiSelect，它将返回一个完整文件名的字符串数组。
按OP进一步规范编辑
您可以使用System.IO.FileInfo类获取文件信息。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();
}