Question

我有一个配置文件，其中包含：

    <add key="x36_key1" value="D1"/>
    <add key="x36_key2" value="D2"/>
    <add key="x36_key3" value="D3"/>
    <add key="x36_key4" value="D4"/>
    <add key="x36_key5" value="D5"/>

现在我需要在这里使用这些键：

   case Keys.D1:
          //something happens here
        break;
   case Keys.D2:
          //something happens here
        break;
   case Keys.D3:
          //something happens here
        break;
   case Keys.D4:
          //something happens here
        break;
   case Keys.D5:
          //something happens here
        break;

我从每个键中提取值的方式如下：

string key1 = System.Configuration.ConfigurationManager.AppSettings["x36_key1"];

但由于它是一个字符串，因此无法用作密钥。

如何让代码读取配置文件中定义的键？

Answer 1

您应该将字符串解析为枚举Keys（msdn）：

string key1 = System.Configuration.ConfigurationManager.AppSettings["x36_key1"];
Keys key;
if (Enum.TryParse<Keys>(key1, out key))
{
    switch (key)
    {
        case Keys.D1:
            //something happens here
            break;
        case Keys.D2:
            //something happens here
            break;
        case Keys.D3:
            //something happens here
            break;
        case Keys.D4:
            //something happens here
            break;
        case Keys.D5:
            //something happens here
            break;
    }
}

Answer 2

<强>更新

使用Enum.Parse()

将配置中的字符串解析为Keys枚举

var keyFromConfiguration = System.Configuration.ConfigurationManager.AppSettings["x36_key1"];

Keys key = (Keys) Enum.Parse(typeof(Keys), keyFromConfiguration);

switch (key)
    {
        case Keys.D1:
            //something happens here
            break;
        case Keys.D2:
            //something happens here
            break;
        case Keys.D3:
            //something happens here
            break;
        case Keys.D4:
            //something happens here
            break;
        case Keys.D5:
            //something happens here
            break;
    }

Answer 3

string key1 = System.Configuration.ConfigurationManager.AppSettings["x36_key1"];
Keys k1 = (Keys)Enum.Parse(typeof(Keys), key1);

从配置文件中读取密钥

3 个答案: