StringDictionary class adds the key as lower-cased(hockblogs.net)
submitted by 
hockman(505) 2 years, 11 months ago
Hi there,
In a project I'm currently developing, we used the StringDictionary (In the System.Collections.Specialized namespace) class frequently for stored key value pairs. I noticed that all my keys were lower-cased.
So when checking out the Add method with Reflector, I found out that the key is lower-cased.
public virtual void Add(string key, string value)
{
if (key == null)
{
throw new ArgumentNullException("key");
}
this.contents.Add(key.ToLower(CultureInfo.InvariantCulture), value);
}
As described on MSDN: The key is handled in a case-insensitive manner; it is translated to lowercase before it is used with the string dictionary.
So if you want to use a string as a key and want that key string representation exactly to the same as you stored it, that use the following:
// Use the Dictionary<string, string> instead of the StringDictionary, since StringDictionary stores it's key as case-insensitive
Dictionary<string, string> items = new Dictionary<string, string>();
Nothing fancy, all standard .NET functionality, but this post is written as a reminder for myself and for you as a visitor of my blog.
Hope this is usefull!
gr,
Robbert
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