private void pbOut_Click(object sender, EventArgs e) { string title = TextKit.selectVideoText; //获取文件路路径 string videoPath = FileKit.select(title); if (string.IsNullOrEmpty(videoPath)) { return; } pbOutPath = videoPath; string prewPic = VideoHandleKit.getPrewPic(videoPath); if (FileKit.isexist(prewPic)) { this.pbOut.Load(prewPic); } else { MessageBox.Show(TextKit.thrumnailNotFoundMsg); } }