AutoPatientInfoRecorder/src/AntdUI/Controls/Dropdown.cs

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// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
// LICENSED UNDER THE Apache License, VERSION 2.0 (THE "License")
// YOU MAY NOT USE THIS FILE EXCEPT IN COMPLIANCE WITH THE License.
// YOU MAY OBTAIN A COPY OF THE LICENSE AT
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING, SOFTWARE
// DISTRIBUTED UNDER THE LICENSE IS DISTRIBUTED ON AN "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
// SEE THE LICENSE FOR THE SPECIFIC LANGUAGE GOVERNING PERMISSIONS AND
// LIMITATIONS UNDER THE License.
// GITEE: https://gitee.com/antdui/AntdUI
// GITHUB: https://github.com/AntdUI/AntdUI
// CSDN: https://blog.csdn.net/v_132
// QQ: 17379620

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing.Design;
using System.Windows.Forms;

namespace AntdUI
{
    /// <summary>
    /// Dropdown 选择器
    /// </summary>
    /// <remarks>向下弹出的列表。</remarks>
    [Description("Dropdown 下拉菜单")]
    [ToolboxItem(true)]
    [DefaultEvent("SelectedValueChanged")]
    public class Dropdown : Button, SubLayeredForm
    {
        #region 属性

        /// <summary>
        /// 列表自动宽度
        /// </summary>
        [Description("列表自动宽度"), Category("行为"), DefaultValue(true)]
        public bool ListAutoWidth { get; set; } = true;

        /// <summary>
        /// 触发下拉的行为
        /// </summary>
        [Description("触发下拉的行为"), Category("行为"), DefaultValue(Trigger.Click)]
        public Trigger Trigger { get; set; } = Trigger.Click;

        /// <summary>
        /// 菜单弹出位置
        /// </summary>
        [Description("菜单弹出位置"), Category("行为"), DefaultValue(TAlignFrom.BL)]
        public TAlignFrom Placement { get; set; } = TAlignFrom.BL;

        /// <summary>
        /// 列表最多显示条数
        /// </summary>
        [Description("列表最多显示条数"), Category("行为"), DefaultValue(4)]
        public int MaxCount { get; set; } = 4;