92 lines
3.3 KiB
C#
92 lines
3.3 KiB
C#
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using System;
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using System.Collections;
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using System.Collections.Generic;
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namespace WalkingTec.Mvvm.Core.Extensions
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{
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/// <summary>
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/// 枚举扩展函数
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/// </summary>
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public static class EnumExtension
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{
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#region 将枚举类型转化为下拉列表
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/// <summary>
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/// 将枚举类型转化为下拉列表
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/// </summary>
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/// <param name="self">枚举类型</param>
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/// <param name="value">value</param>
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/// <param name="pleaseSelect">pleaseSelect</param>
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/// <returns>下拉菜单数据列表</returns>
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public static List<ComboSelectListItem> ToListItems(this Type self, object value = null, bool pleaseSelect = false)
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{
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string[] names = null;
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Array values = null;
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//如果是枚举
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if (self.IsEnum)
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{
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names = Enum.GetNames(self);
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values = Enum.GetValues(self);
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}
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//如果是nullable的枚举
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if (self.IsGenericType && self.GenericTypeArguments[0].IsEnum)
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{
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names = Enum.GetNames(self.GenericTypeArguments[0]);
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values = Enum.GetValues(self.GenericTypeArguments[0]);
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}
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//生成下拉菜单数据
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List<ComboSelectListItem> rv = new List<ComboSelectListItem>();
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if (names != null)
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{
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for(int i=0;i<names.Length;i++)
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{
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var name = names[i];
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var newitem = new ComboSelectListItem { Text = PropertyHelper.GetEnumDisplayName(self, name), Value = values.GetValue(i).ToString() };
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if(value is string)
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{
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if (value != null)
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{
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string v = value.ToString();
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var vs = v.Split(',');
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foreach (var item in vs)
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{
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if (item != null && (newitem.Value.ToString() == item.ToString())||name == item.ToString())
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{
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newitem.Selected = true;
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break;
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}
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}
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}
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}
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else if (value is IEnumerable it)
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{
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foreach (var item in it)
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{
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if (item != null && name == item.ToString())
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{
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newitem.Selected = true;
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break;
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}
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}
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}
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else
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{
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if (value != null && name == value.ToString())
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{
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newitem.Selected = true;
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}
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}
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rv.Add(newitem);
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}
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}
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if (pleaseSelect == true)
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{
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rv.Insert(0, new ComboSelectListItem { Text = CoreProgram._localizer?["Sys.PleaseSelect"], Value = "" });
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}
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return rv;
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}
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#endregion
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}
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}
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