将字符串转换为枚举？

Question

I have the following enum in my class:

  public enum InventoryType
    {
        EQUIP = 1,
        USE = 2,
        SETUP = 3,
        ETC = 4,
        CASH = 5,
        EVAN = 6,
        TOTEMS = 7,
        ANDROID = 8,
        BITS = 9,
        MECHANIC = 10,
        HAKU = 11,
        EQUIPPED = -1
    }

Now, I have a field:

    public InventoryType InventoryType { get; private set; }

I load the data from MySql. MySql's column of type has the string that is the InventoryType. How can I convert the string I get to the enum InventoryType?

I tried:

this.InventoryType = reader.GetString("type");

But of course, that doesn't work, because it's getting a string and required an InventoryType. What can I do to convert it? Thanks.

Answer 1

You can parse it using Enum.TryParse :

InventoryType inventoryType;
if(Enum.TryParse(reader.GetString("type"), out inventoryType))
{
    //use inventoryType
}
else
{
    //not valid
}

Answer 2

You can use Enum.Parse to parse your string back to Enum value -

this.InventoryType = (InventoryType)Enum.Parse(typeof(InventoryType),
                                                 reader.GetString("type"));

Also, use Parse if you are sure the value will be valid; otherwise use TryParse .

Answer 3

尝试这个：-

this.InventoryType= (InventoryType) Enum.Parse( typeof(InventoryType), reader.GetString("type") );