字符串表示的字符串表示,請考慮以下枚舉:
public enum AuthenticationMethod { FORMS = 1, WINDOWSAUTHENTICATION = 2, SINGLESIGNON = 3 },但是,請求AutheThicationMethod時,您需要字符串“表單”。表單,而不是1的ID。 >
要檢索此字符串value,您將需要以下內容:
public class StringValue : System.Attribute { private readonly string _value; public StringValue(string value) { _value = value; } public string Value { get { return _value; } } }
>此解決方案允許您獲取這樣的枚舉的字符串值:
public enum AuthenticationMethod { [StringValue("FORMS")] FORMS = 1, [StringValue("WINDOWS")] WINDOWSAUTHENTICATION = 2, [StringValue("SSO")] SINGLESIGNON = 3 }
,但是,一個更好的解決方案是類型安全性- 元素模式:
public static class StringEnum { public static string GetStringValue(Enum value) { string output = null; Type type = value.GetType(); // Look for our 'StringValueAttribute' in the field's custom attributes FieldInfo fi = type.GetField(value.ToString()); StringValue[] attrs = fi.GetCustomAttributes(typeof(StringValue), false) as StringValue[]; if (attrs.Length > 0) { output = attrs[0].Value; } return output; } }>
string valueOfAuthenticationMethod = StringEnum.GetStringValue(AuthenticationMethod.FORMS);
用於顯式(或隱式)類型轉換,添加帶有映射的靜態字段,填充映射在實例構造函數中,然後添加一個用戶- 定義的類型轉換運算符:
public sealed class AuthenticationMethod { private readonly String name; private readonly int value; public static readonly AuthenticationMethod FORMS = new AuthenticationMethod (1, "FORMS"); public static readonly AuthenticationMethod WINDOWSAUTHENTICATION = new AuthenticationMethod (2, "WINDOWS"); public static readonly AuthenticationMethod SINGLESIGNON = new AuthenticationMethod (3, "SSN"); private AuthenticationMethod(int value, String name){ this.name = name; this.value = value; } public override String ToString(){ return name; } }
instance [name] = this;
> public static expatic equipit Operator authenticationMethod(String str)以上是如何在C#中獲取枚舉值的字符串表示形式?的詳細內容。更多資訊請關注PHP中文網其他相關文章!