如何在其上创建带浮动标签的自定义DataGridViewComboBoxCell

Question

我希望在同一个datagridview列中有两个控件。

我想自定义DataGridViewComboBoxCell，以便它显示所选值的值，并在其上显示带有一些文本的浮动标签。在过去，我能够使用复选框和标签来完成它，但DataGridViewComboBoxCell的问题是，当我覆盖绘制事件时，它会出现一个空的数据源。

我在使用Paint事件后尝试再次分配数据源，但是当我看到DataGridViewComboBoxCell中的值和显示正确值的标签时，我进入无限循环，所以我看到GUI不断闪烁。

10x的帮助。

代码如下：

*表单加载时

MyDGVCheckBoxColumn col = new MyDGVCheckBoxColumn();
        col.DataPropertyName = "value";
        col.DataSource = list;
        col.DisplayMember = "Yes";
        col.ValueMember = "value";

        col.DefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
        this.dataGridView1.Columns.Add(col);
        this.dataGridView1.RowCount = 50;

通用列表的类：

public class CheckThis
{
    public string Yes { get; set; }
    public string value { get; set; }

    public CheckThis()
    {
        Yes = "gggg";
        value = "1";
    }
}

自定义DataGridViewComboBoxCell的代码（我过去从某个站点使用过类似的例子）

public class MyDGVCheckBoxColumn : DataGridViewComboBoxColumn
{
    private string label;

    public string Label
    {
        get
        {
            return label;
        }
        set
        {
            label = value;
        }
    }

    public override DataGridViewCell CellTemplate
    {
        get
        {
            return new MyDGVCheckBoxCell();
        }
    }
}

public class MyDGVCheckBoxCell : DataGridViewComboBoxCell
{
    private string label;

    public string Label
    {
        get
        {
            return label;
        }
        set
        {
            label = value;
        }

    }

    protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates elementState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
    {

        // the base Paint implementation paints the check box
        base.Paint(graphics, clipBounds, cellBounds, rowIndex, elementState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);

        // Get the check box bounds: they are the content bounds
        Rectangle contentBounds = this.GetContentBounds(rowIndex);

        // Compute the location where we want to paint the string.
        Point stringLocation = new Point();
        stringLocation.Y = cellBounds.Y + 30;

        stringLocation.X = cellBounds.X + contentBounds.Bottom;


        // Paint the string.
        var res = false;
        MyDGVCheckBoxColumn col = (MyDGVCheckBoxColumn)this.OwningColumn;
        col.DataSource = list;
        col.DisplayMember = "Yes";
        col.ValueMember = "value";


                this.label = "Customer Does Not Appear";


        graphics.DrawString(
        this.Label, new Font("Arial", 6, FontStyle.Bold), System.Drawing.Brushes.Red, stringLocation);

    }


    public object list { get; set; }
}