Swift将String转换为枚举类型

Question

我刚刚创建了以下代码作为示例，我正在寻找一种方法从textfield.text获取类型为Month的值并将其分配给let bmonth：

enum Month {
    case January, February, March, April, May, June, July, August, September, October, November, December
}

struct BirthDay {
    let day: Int
    let month: Month
    let year: Int

    func calculateWesternZodiac() {
        // some long code
    }

    func calculateVedicZodiac() {
        // some long code
    }
}

// Hardcoding the values

let myBirthday = BirthDay(day: 02, month: .February, year: 1980)

// values from input textField

let bday = Int(dayTextField.text)
let bmonth = Month(monthTextField.text) // I'm looking for the correct way  of doing this ! 
let byear = Int(yearTextField.text)

let yourBirthday = BirthDay(day: bday, month: bmonth, year: byear)

这里的任何人都知道如何做到这一点？