Obtain the key of a generic Dictionary Based on the value)

In many cases, calculate the key or value for the Generic (Generic) Diectionary. In this example, the key is obtained based on the value.
Insus. NET prepares some data below:

Dictionary <,> <,> dic = Dictionary <,> ,,,,

If we already know that the Diectionary value of Generic is, the key of the Generic is 3:

V =;

That is to say, "v" is a parameter.
Insus. NET is obtained in several ways, which are listed one by one. The first one is as follows:



K In is a variable, that is, the key is obtained and assigned to k. Method 2:



Method 3:



Method 4:

 

In the above methods, Insus. NET has been tested and can successfully obtain its key, and some methods have been applied in the development process.