我在使用C＃读取文件属性“文件类型”时遇到问题

Question

我正在尝试使用c＃提取值“文件版本”，但它总是空着。其他所有值似乎都可以阅读。任何提示吗？

public static string GetExtendedFileProperty(string filePath, string propertyName)
    {
        string value = string.Empty;
        string baseFolder = Path.GetDirectoryName(filePath);
        string fileName = Path.GetFileName(filePath);

        //Method to load and execute the Shell object for Windows server 8 environment otherwise you get "Unable to cast COM object of type 'System.__ComObject' to interface type 'Shell32.Shell'"
        Type shellAppType = Type.GetTypeFromProgID("Shell.Application");
        Object shell = Activator.CreateInstance(shellAppType);
        Shell32.Folder shellFolder = (Shell32.Folder)shellAppType.InvokeMember("NameSpace", System.Reflection.BindingFlags.InvokeMethod, null, shell, new object[] { baseFolder });

        //Parsename will find the specific file I'm looking for in the Shell32.Folder object
        Shell32.FolderItem folderitem = shellFolder.ParseName(fileName);
        if (folderitem != null)
        {
            for (int i = 0; i < short.MaxValue; i++)
            {
                //Get the property name for property index i
                string property = shellFolder.GetDetailsOf(null, i);

                //Will be empty when all possible properties has been looped through, break out of loop
                if (String.IsNullOrEmpty(property)) break;


                //Skip to next property if this is not the specified property
                if (property != propertyName) continue;

                //Read value of property
                value = shellFolder.GetDetailsOf(folderitem, i);
                Console.WriteLine(property + " -> " + value);
            }
        }
        //returns string.Empty if no value was found for the specified property
        return value;
    }

Answer 1

您尝试过FileVersionInfo.FileVersion

FileVersionInfo myFileVersionInfo = FileVersionInfo.GetVersionInfo(filePath);
// Print the file name and version number.
Console.WriteLine("File: " + myFileVersionInfo.FileDescription + '\n' +
           "Version number: " + myFileVersionInfo.FileVersion);