C#对象当前正在其他地方使用

执_念 2017-05-26 05:44:49

一个主窗体，两个打印窗口，主窗体创建线程监控usbI/O模块发来的信号，信号1模拟1窗体的打印按钮，信号2模拟2窗体的打印按钮，当运行起来触发的时候就报“对象当前正在其他地方使用”的错误。请大神帮忙，详细说一下怎么解决，谢谢！

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水哥阿乐 2017-05-27

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楼主别急，这种图片大家也分析不了，慢慢找一下那个对象资源被占用，释放一下

执_念 2017-05-27

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主窗体

public delegate void btnclick();
    public partial class Frmmain : Form
    {
        public event btnclick btnc;
        Thread test_thread;
        private void Frmmain_Load(object sender, EventArgs e)
        {
            test_thread = new Thread(test);
            test_thread.Start();
        }
        private void test()
        {
            try
            {
                while (true)
                {
                    string idi = ConfigurationManager.AppSettings["IDI"];
                    if (testDI(idi) == 0)
                    {
                        btnc();
                    }
                }
            }
        }
    }

子窗体中的方法

public void printbtn()
        {
            try
            {
                lock (locker)
                {
                    int intlsh = int.Parse(ConfigurationManager.AppSettings["liushuihao"]);
                    if (intlsh == 0)
                    {
                        string liu = ConfigurationManager.AppSettings["date"] + intlsh.ToString("000");
                        this.ccode.Text = dbb.Rows[0][0].ToString() + this.getserianumber(liu);
                        results = this.ccode.Text;
                        bcc.CreateBarCode(pictureBox1, results);
                    }
                    else
                    {
                        string liu = ConfigurationManager.AppSettings["date"] + intlsh.ToString("000");
                        this.ccode.Text = dbb.Rows[0][0].ToString() + this.getserianumber(liu);
                        results = this.ccode.Text;
                        bcc.CreateBarCode(pictureBox1, results);
                    }
                    PrintDocument pd = new PrintDocument();
                    pd.PrintPage += new PrintPageEventHandler(printDocument1_PrintPage);
                    pd.PrintController = new StandardPrintController();
                    pd.Print();


                    string lius = ConfigurationManager.AppSettings["date"] + intlsh.ToString("000");
                    results = dbb.Rows[0][0].ToString() + this.getserianumber(lius);
                    this.ccode.Text = results;
                    bcc.CreateBarCode(pictureBox1, results);
                    bool gone = SetConfigValue("liushuihao", results.Substring(results.Length - 3));

                    this.setdate();
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }
        }

执_念 2017-05-27