C# 如何将ComboBox添加到绑定到datatable的WINFORM datagridview

我是一名SQL DBA，在VS C#和Winforms方面的技能水平较低。几天来，我一直在努力为DataGridView列添加组合框，现在我已经放弃了。我有一个DataTableDT1和datagridview dg1。dg1.Datasource=dt1；dt1是数据集ds1的成员。我从一个数组中提供组合项

我试过自动生成对错

如果autogeneration=true，我会得到两列名称相同的组合框，它位于错误的列位置，我会从dt1获得正确的数据

如果为false，并且我以编程方式为dg1定义列，则我不会从dt1获取任何数据

我的代码应该是什么样子，我缺少哪些可能的绑定或属性，因此我在第4列位置添加了“GRADE”的组合框，dg1从dt1填充，而combo从数组填充

在读了几十篇博客并尝试了几天之后，我感到非常沮丧。请帮忙

    private DataGridViewComboBoxColumn CreateComboBox()
    {
        DataGridViewComboBoxColumn combo = new DataGridViewComboBoxColumn();
        {
            combo.Name = "comboColumn";
            combo.HeaderText = "Grade";
            ArrayList drl = new ArrayList();
            drl.Add("GS1");
            drl.Add("GS2");
            drl.Add("WG1");
            drl.Add("WG2");
            combo.Items.AddRange(drl.ToArray());
            combo.DataSource = drl;
            //combo.ValueMember = "EmployeeID";
            //combo.DisplayMember = "Grade";
            //combo.DataPropertyName = "Grade";
        }
        return combo;
    }

    public Employee()
    {
        InitializeComponent();
        WindowState = FormWindowState.Maximized;
        Ds1 = new DataSet("ds1");

        Dt1 = new DataTable("dt1");

        ds1.Tables.Add(dt1);

        dt1.Columns.Add("EmployeeID");
        dt1.Columns.Add("FirstName");
        dt1.Columns.Add("LastName");
        dt1.Columns.Add("Grade");
        dt1.Columns.Add("DOB");

        //initialize datagridview
        Dg1.AutoGenerateColumns = true;

        //dg1.Columns.Add("column4", " EmployeeID ");
        // dg1.Columns.Add("column4", " FirstName ");
        // dg1.Columns.Add("column4", " LastName ");
     Dg1.Columns.Add(CreateComboBox());
        // dg1.Columns.Add("column5", " DOB ");

        Dg1.DataSource = dt1;

    }

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已解决：经过几天的搜索和尝试，我尝试了一个我认为不可行的解决方案，因为它提到了一个未绑定的列，并且似乎需要SQL或其他连接使其成为绑定列。事实证明，没有必要绑定列。这就是你要做的

1.Open your Form designer an place Focus on your DataGridView and select properties.

2.Scroll down to the Columns collection (mine was at the bottom under Misc.) and expand the collection.
3.Add Column name and if binding to DataTable set the DataPropertyName to the dt column.  In my case I set both the same. 
Also there is a drop down to choose the ColumnType
4.Add your ComboBox column.  This has a few more settings.  You should look through all of them but I was interested in Items &
HeaderText only.  I set HeaderText the same as ColumnName &
DataPropertyName.  I then opened the Items and added my list.  
There is also a DataSource. I presume that is for populating your
ComboBox from a database, service, or sharepoint but I'm not doing
that.
5.That's it.

在.cs代码文件中，需要插入两行代码。我把我的放在表单的顶部，在那里我声明了所有方法都可以使用的数据表

<yourdatagridview>.AutoGenerateColumns = false;
<yourdatagridview>.DataSource = <yourdatatable>;

.AutoGenerateColumns=false；
.DataSource=；