WebExamples. The following code example shows how to use the IDictionary.Contains method of the System.Collections.IDictionary interface with a Dictionary.The example demonstrates that the method returns false if a key of the wrong data type is supplied.. The code example is part of a larger example, including output, provided for … Web如果只是判断字典中某个值是否存在，使用Contains和TryGetValue都可以。如果需要判断是否存在之后再得到某个值，尽量使用TryGetValue{}{}

c#里面声明一个Dictionary和IDictionary有什么区别？ - 惊风雨 - 博 …

WebThe IDictionary class is the base interface for collections of key-and-value pairs. Each element is a key-and-value pair stored in a DictionaryEntry object. Each association must have a unique key that is not null, but the value of an association can be any object reference, including a null reference. http://duoduokou.com/csharp/27265964960348502079.html midland county public libraries

Type: System.Collections.IDictionary - Columbia University

http://www1.cs.columbia.edu/~lok/csharp/refdocs/System.Collections/types/IDictionary.html Web当我们使用Array或者Map形式做数据储存时，为属性赋值仅支持IList和IDictionary，不支持List和Dictionary 这一点和第2）点不矛盾，第2）点讲的是属性的定义，这里讲的是属性的赋值。 midland county public records search