C# 获取枚举的描述Description
方法类：
public static class EnumExtensions { #region Enum /// <summary> /// 获取枚举变量值的 Description 属性 /// </summary> /// <param name="obj">枚举变量</param> /// <returns>如果包含 Description 属性，则返回 Description 属性的值，否则返回枚举变量值的名称</returns> public static string GetDescription(this System.Enum obj) { return GetDescription(obj, false); } /// <summary> /// 获取枚举变量值的 Description 属性 /// </summary> /// <param name="obj">枚举变量</param> /// <param name="isTop">是否改变为返回该类、枚举类型的头 Description 属性，而不是当前的属性或枚举变量值的 Description 属性</param> /// <returns>如果包含 Description 属性，则返回 Description 属性的值，否则返回枚举变量值的名称</returns> public static string GetDescription(this System.Enum obj, bool isTop) { if (obj == null) { return string.Empty; } try { Type enumType = obj.GetType(); DescriptionAttribute dna = null; if (isTop) { dna = (DescriptionAttribute)Attribute.GetCustomAttribute(enumType, typeof(DescriptionAttribute)); } else { FieldInfo fi = enumType.GetField(System.Enum.GetName(enumType, obj)); dna = (DescriptionAttribute)Attribute.GetCustomAttribute( fi, typeof(DescriptionAttribute)); } if ((dna != null) && (string.IsNullOrEmpty(dna.Description) == false)) { return dna.Description; } } catch { } return obj.ToString(); } /// <summary> /// 获取枚举变量值的 Description 属性 /// </summary> /// <param name="obj">枚举变量</param> /// <returns>如果包含 Description 属性，则返回 Description 属性的值，否则返回枚举变量值的名称</returns> public static string GetDescription<TEnum>(this TEnum obj) { return GetDescription(obj, false); } /// <summary> /// 获取枚举变量值的 Description 属性 /// </summary> /// <param name="obj">枚举变量</param> /// <param name="isTop">是否改变为返回该类、枚举类型的头 Description 属性，而不是当前的属性或枚举变量值的 Description 属性</param> /// <returns>如果包含 Description 属性，则返回 Description 属性的值，否则返回枚举变量值的名称</returns> public static string GetDescription<TEnum>(this TEnum obj, bool isTop) { if (obj == null) { return string.Empty; } try { Type enumType = obj.GetType(); DescriptionAttribute dna = null; if (isTop) { dna = (DescriptionAttribute)Attribute.GetCustomAttribute(enumType, typeof(DescriptionAttribute)); } else { FieldInfo fi = enumType.GetField(System.Enum.GetName(enumType, obj)); dna = (DescriptionAttribute)Attribute.GetCustomAttribute( fi, typeof(DescriptionAttribute)); } if ((dna != null) && (string.IsNullOrEmpty(dna.Description) == false)) { return dna.Description; } } catch { } return obj.ToString(); } /// <summary> /// 获取字段Description /// </summary> /// <param name="fieldInfo">FieldInfo</param> /// <returns>DescriptionAttribute[] </returns> public static DescriptionAttribute[] GetDescriptAttr(this FieldInfo fieldInfo) { if (fieldInfo != null) { return (DescriptionAttribute[])fieldInfo.GetCustomAttributes(typeof(DescriptionAttribute), false); } return null; } /// <summary> /// 根据Description获取枚举 /// 说明： /// 单元测试-->通过 /// </summary> /// <typeparam name="T">枚举类型</typeparam> /// <param name="description">枚举描述</param> /// <returns>枚举</returns> public static T GetEnumName<T>(string description) { Type _type = typeof(T); foreach (FieldInfo field in _type.GetFields()) { DescriptionAttribute[] _curDesc = field.GetDescriptAttr(); if (_curDesc != null && _curDesc.Length > 0) { if (_curDesc[0].Description == description) return (T)field.GetValue(null); } else { if (field.Name == description) return (T)field.GetValue(null); } } throw new ArgumentException(string.Format("{0} 未能找到对应的枚举.错误枚举{1}", description, _type.Name), "Description"); } /// <summary> /// 将枚举转换为ArrayList /// 说明： /// 若不是枚举类型，则返回NULL /// 单元测试-->通过 /// </summary> /// <param name="type">枚举类型</param> /// <returns>ArrayList</returns> public static ArrayList ToArrayList(this Type type) { if (type.IsEnum) { ArrayList _array = new ArrayList(); Array _enumValues = System.Enum.GetValues(type); foreach (System.Enum value in _enumValues) { _array.Add(new KeyValuePair<System.Enum, string>(value, GetDescription(value))); } return _array; } return null; } #endregion Enum }
枚举类：
#region 职员流程类型 /// <summary> /// 职员流程类型 /// </summary> [Description("职员流程类型")] public enum EmployeeAffairTypeEnum { /// <summary> /// 入职 /// </summary> [Description("入职")] ApplyInureEmpInPositon, /// <summary> /// 转正 /// </summary> [Description("转正")] ApplyInureEmpInPass, /// <summary> /// 兼职 /// </summary> [Description("兼职")] ApplyInureEmpPartJob, /// <summary> /// 结束兼职 /// </summary> [Description("结束兼职")] ApplyInureEmpEndPartJob, /// <summary> /// 异动 /// </summary> [Description("异动")] ApplyInureEmpInAdjust, /// <summary> /// 离职 /// </summary> [Description("离职")] ApplyInureEmpInDimission, /// <summary> /// 正式合同续签 /// </summary> [Description("正式合同续签")] ApplyInureEmpContractRenewal, /// <summary> /// 职员群调审批 /// </summary> [Description("职员群调审批")] ApplyInureEmpGroupTransfer, /// <summary> /// 行车津贴 /// </summary> [Description("行车津贴")] ApplyInureEmpMileage } #endregion 职员流程类型 #region 职员申请单数据（入职、转正、异动、离职、兼职、结束兼职、合同续签、职员异动）的搜索视图 /// <summary> /// 职员申请单数据（入职、转正、异动、离职、兼职、结束兼职、合同续签、职员异动）的搜索视图 /// </summary> [Description("职员申请表视图")] public enum EmployeeApplyViewEnum { /// <summary> /// 入职 /// </summary> [Description("VM_ApplyInureEmpInPositon")] ApplyInureEmpInPositon, /// <summary> /// 转正 /// </summary> [Description("VM_ApplyInureEmpInPass")] ApplyInureEmpInPass, /// <summary> /// 兼职 /// </summary> [Description("VM_ApplyInureEmpPartJob")] ApplyInureEmpPartJob, /// <summary> /// 结束兼职 /// </summary> [Description("VM_ApplyInureEmpEndPartJob")] ApplyInureEmpEndPartJob, /// <summary> /// 异动 /// </summary> [Description("VM_ApplyInureEmpInAdjust")] ApplyInureEmpInAdjust, /// <summary> /// 离职 /// </summary> [Description("VM_ApplyInureEmpInDimission")] ApplyInureEmpInDimission, /// <summary> /// 正式合同续签 /// </summary> [Description("VM_ApplyInureEmpContractRenewal")] ApplyInureEmpContractRenewal, /// <summary> /// 职员群调审批 /// </summary> [Description("VM_ApplyInureEmpGroupTransfer")] ApplyInureEmpGroupTransfer, /// <summary> /// 行车津贴 /// </summary> [Description("VM_ApplyInureEmpMileage")] ApplyInureEmpMileage } #endregion
调用方法：
var affairDescription = EmployeeAffairTypeEnum.ApplyInureEmpContractRenewal.GetDescription(); Console.WriteLine(affairDescription); var viewName = ((EmployeeApplyViewEnum)EmployeeAffairTypeEnum.ApplyInureEmpContractRenewal).GetDescription(); Console.WriteLine(viewName);
