C#按值查找变量

Question

我正在制作一个"错误代码到字符串"转换器,它将从其值显示错误代码的名称,例如0x000000c3将给出"Class not found",但使用MY OWN错误代码!

以下是它的实际情况:

#region errcodes
    public int NORMAL_STOP      = 0x00000000;
    public int LIB_BROKEN       = 0x000000a1;
    public int RESOURCE_MISSING = 0x000000a2;
    public int METHOD_NOT_FOUND = 0x000000a3;
    public int FRAMEWORK_ERROR  = 0x000000b1;
    public int UNKNOWN          = 0x000000ff;
#endregion
    public string getName(int CODE)
    {

    }

我想在函数中string从参数中获取一个值.CODEgetName

我怎样才能做到这一点 ？

Answer 1

一个好的C#实践是使用枚举:

public enum ErrorCode
{
    NORMAL_STOP      = 0x00000000,
    LIB_BROKEN       = 0x000000a1,
    RESOURCE_MISSING = 0x000000a2,
    METHOD_NOT_FOUND = 0x000000a3,
    FRAMEWORK_ERROR  = 0x000000b1,
    UNKNOWN          = 0x000000ff
}

public const string InvalidErrorCodeMessage = "Class not found";

public static string GetName(ErrorCode code)
{
    var isExist = Enum.IsDefined(typeof(ErrorCode), code);
    return isExist ? code.ToString() : InvalidErrorCodeMessage;
}

public static string GetName(int code)
{
    return GetName((ErrorCode)code);
}

另一个好建议:对错误代码使用C#命名约定会很棒:

public enum ErrorCode
{
    NormalStop      = 0x00000000,
    LibBroken       = 0x000000a1,
    ResourceMissing = 0x000000a2,
    MethodNotFound  = 0x000000a3,
    FrameworkError  = 0x000000b1,
    Unknown         = 0x000000ff
}

用法示例:

void Main()
{
  Console.WriteLine(GetName(0)); // NormalStop
  Console.WriteLine(GetName(1)); // Class not found
  Console.WriteLine(GetName(ErrorCode.Unknown)); // Unknown
}