如何在win窗体中隐藏组合框中的特定项

// 假设comboBox1是你的组合框控件
// 假设你想禁用索引为1的项
comboBox1.Items[1].Enabled = false;

public class CustomComboBoxRenderer : ToolStripProfessionalRenderer
{
    public CustomComboBoxRenderer() : base(new CustomColors()) { }

    protected override void OnRenderItemText(ToolStripItemTextRenderEventArgs e)
    {
        if (e.Item is ComboBoxItem && e.Item.Tag != null && e.Item.Tag.ToString() == "hide")
        {
            e.Item.Visible = false;
        }
        else
        {
            base.OnRenderItemText(e);
        }
    }
}

public class CustomColors : ProfessionalColorTable
{
    public override Color MenuItemSelected
    {
        get { return Color.FromArgb(204, 224, 244); }
    }
}

comboBox1.Renderer = new CustomComboBoxRenderer();

// 移除索引为1的项
comboBox1.Items.RemoveAt(1);

// 添加回索引为1的项
comboBox1.Items.Insert(1, "Your Item");