具有多行和彩色项目的自定义组合框 [关闭]

Question

我一直在寻找与下图中的这个组合看起来或具有相似功能的组合。有没有已经可用的，或者你能指导我如何制作一个自定义的

Answer 1

您可以使用自绘的ComboBox。

例如，您可以：

• 将DrawMode 属性设置为OwnerDrawFixed
• 将ItemHeight属性设置为合适的高度
• 处理DrawItem 事件并根据您所需的逻辑绘制项目。

示例代码：

private void Form1_Load(object sender, EventArgs e)
{
    this.comboBox1.DrawMode = DrawMode.OwnerDrawFixed;
    this.comboBox1.ItemHeight = 40;
    var db = new TestDBEntities();
    this.comboBox1.DataSource = db.Products.ToList();
}
private void comboBox1_DrawItem(object sender, DrawItemEventArgs e)
{
    if (e.Index > -1)
    {
        var name = ((Product)this.comboBox1.Items[e.Index]).Name;
        var id = ((Product)this.comboBox1.Items[e.Index]).Id; ;
        var price = ((Product)this.comboBox1.Items[e.Index]).Price; ;

        if ((e.State & DrawItemState.ComboBoxEdit) == DrawItemState.ComboBoxEdit)
            e.Graphics.FillRectangle(SystemBrushes.Highlight, e.Bounds);
        else if ((e.State & DrawItemState.Focus) == DrawItemState.Focus)
            e.Graphics.FillRectangle(SystemBrushes.InactiveCaption, e.Bounds);
        else
            e.Graphics.FillRectangle(SystemBrushes.Window, e.Bounds);

        e.Graphics.DrawString(name,
            new Font(this.comboBox1.Font, FontStyle.Bold),
            Brushes.Blue,
            new Rectangle(e.Bounds.Left, e.Bounds.Top,
                e.Bounds.Width, this.comboBox1.ItemHeight / 2));

        e.Graphics.DrawString(string.Format("Id:{0}", id),
            this.comboBox1.Font,
            Brushes.Red,
            new Rectangle(e.Bounds.Left, e.Bounds.Top + this.comboBox1.ItemHeight / 2,
                e.Bounds.Width / 2, this.comboBox1.ItemHeight / 2));


        e.Graphics.DrawString(string.Format("Price:{0}", price),
            this.comboBox1.Font,
            Brushes.Red,
            new Rectangle(e.Bounds.Left + e.Bounds.Width / 2,
                e.Bounds.Top + this.comboBox1.ItemHeight / 2,
                e.Bounds.Width, this.comboBox1.ItemHeight / 2));
    }
}

截图：