c# - 排序组合框时出现问题

Question

我正在执行一项任务，我需要通过列表填充组合框，而列表是从 employee.dat 文件填充的。我已成功填充组合，但在对其进行排序时遇到问题。我要排序的值是字符串数字。它显示 0-9 的值，但当它超出 9 时，组合看起来很傻。

这是截图

我需要做的是对这些值进行排序，意味着 10 应该领先 9。

这是我已经尝试过的代码片段。

         private void FormDelete_Load(object sender, EventArgs e)
    {
        //LOAD EVENT for FORM

        //Clear all form controls
        Reset();

        //Fill the ID Combo box using data in List<T>
        comboBoxID.Items.Clear();
        foreach (MyClass.Employee obj in MyClass.listEmployees)
        {
            comboBoxID.Items.Add(obj.ID);
        }

        //Sort the combo box ibn ascending order
        comboBoxID.Sorted = true;

    }

Employee.cs

    public class Employee
    {
        public int ID;
        public string fName;
        public string lName;
        public string gender;
        public int age;
        public double hourWage;

    }
    public static List<Employee> listEmployees = new List<Employee>();

员工.dat

1, Ann, Crowe, F, 34, 12.95
2, Bob, Costas Jr., M, 27, 8.75
3, Sue, Soppala, F, 22, 7.95
4, Bill, Barton, M, 45, 15.25
5, Jill, Jordan, F, 33, 14.75
6, Art, Ayers, M, 33, 14.75
7, Larry, Stooge, M, 55, 21.05
8, Art, Ayers, M, 33, 14.75
9, Larry, Stooge, M, 55, 21.05
10, Art, Ayers, M, 33, 14.75
11, Larry, Stooge, M, 55, 21.05

列表填充代码

 if (File.Exists("employee.data"))
        {
            try
            {
            streamEmployee = new StreamReader("employee.data");  
            string line;  //to read a line from the text file
            string[] arrFields = new string[5];
            while (streamEmployee.Peek() > -1)
            {
                line = streamEmployee.ReadLine();  //read a line of records      from file
                arrFields = line.Split(',');  //split the line at comma junction, and save split                            //fields in array 

                MyClass.Employee objEmp = new MyClass.Employee();  //create a "specific" employee                                       //object instance

                //Assign each field from line as generic object's properties to make it "specific
                objEmp.ID = Convert.ToInt32(arrFields[0].Trim());  //ID is integer
                objEmp.fName = arrFields[1].Trim();
                objEmp.lName = arrFields[2].Trim();
                objEmp.gender = arrFields[3].Trim();
                objEmp.age = Convert.ToInt32(arrFields[4].Trim());  //age is integer
                objEmp.hourWage = Convert.ToDouble(arrFields[5].Trim());  //hourly wage is double

                //Add this specific employee object to the List
                MyClass.listEmployees.Add(objEmp);

            } //while


        } //try

        catch (IOException err)
        {
            MessageBox.Show(err.Message);
            error = true;

        } //catch

        finally
        {
            if (streamEmployee != null)  //it is indeed representing a file and may not be closed
                streamEmployee.Close();


        } //finally

    } //if

Answer 1

您的文件已经排序，因此无需调用 Sorted=true。
无论如何，如果您想确保无论输入文件中存在什么顺序，您的代码都会按照 ID 顺序添加员工，那么您可以将循环更改为

foreach (MyClass.Employee obj in MyClass.listEmployees.OrderBy(x => x.ID))
{
    comboBoxID.Items.Add(obj.ID);
}

同样不需要将 Sorted 属性设置为 true....