小编man*_*mer的帖子

我有一个C#.NET(v4.6.2)WinForms应用程序,我正在访问一个文件,该文件可能是/可能不是使用"System.IO.Compression;"创建的.zip存档.我在项目中有"System.IO.Compression"和System.IO.Compress.FileSystem"引用,在顶部使用"System.IO.Compression;",它是使用NuGet包安装程序安装的.

以下是尝试以.zip存档打开文件的代码:

      try
        {
            string extractPath = Path.GetTempFileName();
            string strGameVersion = "";
            string strProjectType = "";

            using (ZipArchive archive = ZipFile.OpenRead(OpenFilePath))
            {
                FileStream fs = new FileStream(extractPath, FileMode.Open, FileAccess.Read);
                StreamReader sr = new StreamReader(fs);
                foreach (ZipArchiveEntry entry in archive.Entries)
                {
                    if (entry.FullName.Contains("ProjectData.txt"))
                    {
                        entry.ExtractToFile(Path.Combine(extractPath, entry.FullName));
                        strGameVersion = sr.ReadLine();
                        strProjectType = sr.ReadLine();
                    }
                    File.Delete(extractPath);
                }
                sr.Close();
                fs.Close();
                archive.Dispose();
            }
    }
    catch(System.IO.FileFormatException flex1)
    {
        MessageBox.Show(flex1.ToString(), "oops.", MessageBoxButtons.OK,  MessageBox.Icon.Error);
    }

错误消息是"System.MissingMethodException:Method not found:'System.IO.Compression.ZipArchive System.IO.Compression.ZipFile.OpenRead(System.String)'." 那么我做错了什么或者根本没做什么？

我有一个工具条按钮和两个MDI ChildForms称为C#WinForms应用程序"frmMultiCategoryProject"和"frmTiebreaker".工具条按钮的Click()事件中会发生不同的操作,具体取决于工具条按钮的Text属性.

这是代码:

    private void tsbtnAddShowTiebreaker_Click(object sender, EventArgs e)
    {
        if (tsbtnAddShowTiebreaker.Text == "Add Tiebreaker" || tsbtnAddShowTiebreaker.Text == "Show Tiebreaker")
        {
            foreach (frmMultiCategoryProject frmamdic in this.MdiChildren)
            {
                frmamdic.SendToBack();
                frmamdic.Hide();
                frmamdic.Visible = false;
            }
            frmTiebreaker frmTB = new frmTiebreaker(Tiebreaker);
            frmTB.MdiParent = this;
            frmTB.FormBorderStyle = System.Windows.Forms.FormBorderStyle.None;
            frmTB.Dock = DockStyle.Fill;
            frmTB.Show();
            tsbtnCloseProject.Visible = true;
            frmTB.BringToFront();
            tsbtnAddShowTiebreaker.Text = "Hide Tiebreaker";
        }
        else if (tsbtnAddShowTiebreaker.Text == "Hide Tiebreaker")
        {
            string strMdiChildren = "";

            foreach (frmTiebreaker frmTB in this.MdiChildren)    // …