private void Form1_Load(object sender, EventArgs e) { unityTools = new UnityTools(); openFileDialog1.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Desktop); openFileDialog1.Filter = "UnityPackage文件|*.unitypackage"; openFileDialog1.RestoreDirectory = true; openFileDialog1.FilterIndex = 1; Task t = new Task(() => { PathTools.DeleteTmpFile(); }); t.Start(); }