C#调用codesoft的SDK，CopyImageToFile方法不能显示传参

Question

        OpenFileDialog ofd = new OpenFileDialog(); //选择要打印的Label档
        ofd.ShowDialog();
        textBox1.Text = ofd.FileName;
        if (true)
        {
            labFile = ofd.FileName;
            LabelManager2.Application labApp = new LabelManager2.Application();
            labApp.Visible = true;
            try
            {
           
                //labApp = new LabelManager2.Application();
                //labApp.Visible = true;
                labApp.Documents.Open(labFile, false);
                filePath = "D:\\" + DateTime.Now.Year + DateTime.Now.Month + DateTime.Now.Day + DateTime.Now.Hour + DateTime.Now.Minute + DateTime.Now.Second + ".png";//保存图片的路径  为后面预览图片做准备
                doc = labApp.ActiveDocument;
                doc.Variables.FormVariables.Item("VAR00").Value = str.ToString();//向Label档传入变量
                doc.Variables.FormVariables.Item("VAR01").Value = str.ToString();
                string st = doc.CopyImageToFile(24, "PNG", 0, 100, filePath);
                
                pictureBox1.Load(filePath);  //以图片的形式浏览打印的Label
               // doc.PrintDocument(1);
            }
            catch (Exception ex)
            {
                MessageBox.Show("出錯了，原因" + ex.Message);
            }
            finally
            {
                labApp.Documents.CloseAll(true);
                labApp.Quit();
                labApp = null;
                doc = null;
            }
        }

    

Answer 1

没事了，已经解决了。