C# 枚举、字符串、值的相互转换

时间:2021-05-04 17:52:22
using System;

class Program
{
public enum Color
{
Red = 0xff0000,
Orange = 0xFFA500,
Yellow = 0xFFFF00,
Lime = 0x00FF00,
Cyan = 0x00FFFF,
Blue = 0x0000FF,
Purple = 0x800080
}

static void Main(string[] args)
{
Color color = Color.Blue;
string colorString = " Blue";
int colorValue = 0x0000FF;

// 枚举转字符串
string enumStringOne = color.ToString(); //效率低,不推荐
string enumStringTwo = Enum.GetName(typeof(Color), color);//推荐

// 枚举转值
int enumValueOne = color.GetHashCode();
int enumValueTwo = (int)color;
int enumValueThree = Convert.ToInt32(color);

// 字符串转枚举
Color enumOne = (Color)Enum.Parse(typeof(Color), colorString);

// 字符串转值
int enumValueFour = (int)Enum.Parse(typeof(Color), colorString);

// 值转枚举
Color enumTwo = (Color)colorValue;
Color enumThree = (Color)Enum.ToObject(typeof(Color), colorValue);

// 值转字符串
string enumStringThree = Enum.GetName(typeof(Color), colorValue);
}
}




// 假设有枚举值如下:
public enum DbProviderType
{
SqlServer,
Oracle
}
// 1、将枚举转换为字符串:
string strDbType = DbProviderType.SqlServer.ToString();
// 2、将字符串转换为枚举:
DbProviderType dbType = (DbProviderType)Enum.Parse(typeof(DbProviderType), strDbType, true);