c# - 如何合并两个 NameValueCollection？

Question

我有两个 NameValueCollection:

NameValueCollection customTag = (NameValueCollection)System.Configuration.ConfigurationManager.GetSection("secureAppSettings");
NameValueCollection appSetting = (NameValueCollection)System.Configuration.ConfigurationManager.GetSection("appSettings");

我尝试了 customTag.Add(appSetting); 方法，但出现此错误:Collection is read-only。

我如何将它们合并为一个，以便我可以访问两者的所有元素？

Answer 1

要合并集合，请尝试以下操作:

var secureSettings = (NameValueCollection)System.Configuration.ConfigurationManager.GetSection("secureAppSettings");
var appSettings = (NameValueCollection)System.Configuration.ConfigurationManager.AppSettings;

// Initialise a new NameValueCollection with the contents of the secureAppSettings section
var allSettings = new NameValueCollection(secureSettings);
// Add the values from the appSettings section
foreach (string key in appSettings)
{
    // Overwrite any entry already there
    allSettings[key] = appSettings[key];
}

使用新的 allSettings 集合访问组合设置。