c# - 如何避免字典中的空键错误？

Question

如果键为空，如何避免错误？

//Getter/setter
public static Dictionary<string, string> Dictionary
{
    get { return Global.dictionary; }
    set { Global.dictionary = value; }
}

更新:

Dictionary.Add("Key1", "Text1");
Dictionary["Key2"] <-error! so what can I write in the GET to avoid error?

谢谢。

问候

Answer 1

使用TryGetValue:

Dictionary<int, string> dict = ...;
string value;

if (dict.TryGetValue(key, out value))
{
    // value found
    return value;
}
else
{
    // value not found, return what you want
}