问TPL -使用静态方法与结构方法

EN

private static string GetVersionInfo(string filepath)
{
    FileVersionInfo verInfo = FileVersionInfo.GetVersionInfo(filepath);
    return string.Format("{0}.{1}.{2}.{3}", verInfo.ProductMajorPart, verInfo.ProductMinorPart,
                                            verInfo.ProductBuildPart, verInfo.ProductPrivatePart).Trim();
}

resultList = dllFilesRows.AsParallel().WithDegreeOfParallelism(20)
                    .Select(r =>
                    {
                        var symbolPath = r.Filename;
                        return new FilenameAndVersion{Filename=symbolPath, Version=GetVersionInfo(symbolPath)};
                    })
                    .ToArray();

 private struct FilenameAndVersion 
{
    private string _version, _filename;
    public string Version { get { return _version; } }
    public string Filename { get { return _filename; } }

    private void SetVersion()
    {
        FileVersionInfo verInfo = FileVersionInfo.GetVersionInfo(this.Filename);
        this._version = string.Format("{0}.{1}.{2}.{3}", verInfo.ProductMajorPart, verInfo.ProductMinorPart,

                                                                                    verInfo.ProductBuildPart, verInfo.ProductPrivatePart).Trim();
}
public FilenameAndVersion(string filename, string version)
{
    this._filename = filename;
    this._version = string.Empty;
    SetVersion();
}

resultList = dllFilesRows.AsParallel().WithDegreeOfParallelism(20)
                    .Select(r =>
                    {
                        var symbolPath = r.Filename;
                        return new FilenameAndVersion(symbolPath, String.Empty);
                    })
                    .ToArray();