[C #] Enumhelper

usingSystem;usingSystem.ComponentModel;usingSystem.Reflection;namespacelh.dotnet2.utilities.common{// <summary>    // Enumerate helper classes    // </summary>     Public Static classEnumhelper {#regionPrivate methodsPrivate StaticDescriptionattribute[] Getdescriptattr ( ThisFieldInfo FieldInfo) {if(FieldInfo! =NULL)            {return(descriptionattribute[]) fieldinfo.getcustomattributes (typeof(DescriptionAttribute),false); }return NULL; }#endregionPrivate methods// <summary>        /// Determine if enumeration includes enumeration constant names        // </summary>        // <typeparam name= "T" > Enumeration </typeparam>        // <param name= "Enumname" > Enumeration constant name </param>        // <returns> whether to include enumeration constant name </returns>        //Founder: Yan Zhi Wei        ///Creation time: 2015-06-04 17:17        /// remarks description:<c>null</c>         Public Static BOOLCheckedcontainenumname<t> (stringEnumname)whereT:struct, IConvertible {BOOL_result =false;if(typeof(T). Isenum) {string[] _enumnname = Enum.getnames (typeof(T));if(_enumnname! =NULL)                { for(inti = 0; i < _enumnname.length; i++) {if(string. Compare (_enumnname[i], Enumname,true) = = 0) {_result =true; Break; }                    }                }            }return_result; }// <summary>        /// Get description from the enumeration        // </summary>        /// <param name= "Targetenum" > Need to get enumeration description of enumerations </param>        /// <returns> description content </returns>         Public Static stringGetDescription ( ThisEnum targetenum) {string_description =string.            Empty; FieldInfo _fieldinfo = Targetenum.gettype ().            GetField (Targetenum.tostring ()); descriptionattribute[] _attributes = _fieldinfo.getdescriptattr ();if(_attributes! =NULL&& _attributes. Length > 0) _description = _attributes[0]. Description;Else_description = Targetenum.tostring ();return_description; }// <summary>        /// Get enumeration based on description        // </summary>        // <typeparam name= "T" > Enum type </typeparam>        /// <param name= "description" > Enumeration description </param>        /// <returns> Enumeration </returns>         Public StaticT parseenumdescription<t> ( This stringDescription, T defaultvalue)whereT:struct, IConvertible {if(typeof(T). Isenum) {Type _type =typeof(T);foreach(FieldInfo Fieldinch_type. GetFields ()) {descriptionattribute[] _description = field. Getdescriptattr ();if(_description! =NULL&& _description. Length > 0) {if(string. Compare (_description[0]. Description, Description,true) = = 0) {defaultvalue = (T) field. GetValue (NULL); Break; }                    }Else{if(string. Compare (field. Name, Description,true) = = 0) {defaultvalue = (T) field. GetValue (NULL); Break; }                    }                }            }returnDefaultValue; }// <summary>        /// Convert enumeration constant names to enumerations        // </summary>        // <typeparam name= "T" > Enumeration </typeparam>        // <param name= "Enumname" > Enumeration constant name </param>        // <returns></returns>        //Founder: Yan Zhi Wei        ///Creation time: 2015-06-05 9:16        /// remarks description:<c>null</c>         Public StaticT parseenumname<t> ( This stringEnumname)whereT:struct, IConvertible {returnT Enum.parse (typeof(T), Enumname,true); }    }}

Unit tests:

usingMicrosoft.VisualStudio.TestTools.UnitTesting;namespaceyanzhiwei.dotnet2.utilities.common.tests{ Public enumAreamode {NONE, city, town, ROAD, Citytown, Townroad, Cityroad, All} [TestClass ()] Public classenumhelpertests {[TestMethod ()] Public voidCheckedcontainenumnametest () {Assert.istrue (enumhelper.checkedcontainenumname<areamode> ("None")); } [TestMethod ()] Public voidGetdescriptiontest () {assert.areequal ("NONE", AreaMode.NONE.GetDescription ()); } [TestMethod ()] Public voidParseenumdescriptiontest () {assert.areequal (Areamode.none, enumhelper.parseenumdescription<areamode& gt; ("NONE", Areamode.citytown)); } [TestMethod ()] Public voidParseenumnametest () {assert.areequal (Areamode.all, enumhelper.parseenumname<areamode> ("All")); }    }}

[C #] Enumhelper