组合框添加项目抛出异常"Specific cast is not valid"

Question

嗨，我有以下代码将一些项目添加到组合框中 当我在线程中执行代码时，我有以下异常"特定强制转换无效"但是在主窗体线程中执行此操作时没有例外。知道如何解决这个问题吗？

        Control.CheckForIllegalCrossThreadCalls = false;
        //Auto Complete
        comboBox3.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
        comboBox3.AutoCompleteSource = AutoCompleteSource.ListItems;
        //no specific formatting
        comboBox3.FormattingEnabled = true;
        Thread th1 = new Thread(() =>
            {
                try
                {
                    //# Code Start
                    //Some Text 
                    String[] TicketStatus = new string[] { "a", "b", "c", "d", "e" };
                    //Throw Exception "Specific cast is not valid"
                    comboBox3.Items.AddRange(TicketStatus);
                    //# Code End
                }
                catch (Exception c) { MessageBox.Show(c.Message); }
            });
        th1.Start();

像这样没有例外

  Control.CheckForIllegalCrossThreadCalls = false;
        //Auto Complete
        comboBox3.AutoCompleteMode = AutoCompleteMode.SuggestAppend;
        comboBox3.AutoCompleteSource = AutoCompleteSource.ListItems;
        //no specific formatting
        comboBox3.FormattingEnabled = true;

        //# Code Start
        //Some Text 
        String[] TicketStatus = new string[] { "a", "b", "c", "d", "e" };
        //Throw Exception "Specific cast is not valid"
        comboBox3.Items.AddRange(TicketStatus);
        //# Code End

Answer 1

不能从 UI 线程以外的线程访问 UI 元素。

您必须将资源库代码编组回 UI 线程。

使用InvokeRequired执行此操作。