How to put objects into a dictionary using Dapper in C#?

问题

I have a dictionary like the following:

Dictionary<string,SP> dict;

that contains a string and a SP object.

I would like to do the following

dict = conn.Query("SELECT routine_name,created,modified FROM PROCEDURES").toDictionary (
                        row => (string)row.Routine_Name,
                        row => new SP (Name=row.Routine_Name,Created=row.created,Modified=row.modified));

The above code is not working. How can I create a SP object with the above information. I have a constructor that takes these three parameters.

回答1:

1. Create proper model

   public class SP {
       public string RoutineName { get; set; }
       public DateTime Created { get; set; }
       public DateTime Modified { get; set; }
   }
   

2. Map your query to model properties, select it to dictionary

   Dictionary<string, SP> dictionary = connection.Query<SP>(@"
       SELECT 
            routine_name AS RoutineName,
            created AS Created,
            modified AS Modified
       FROM PROCEDURES
   ").ToDictionary(m => m.RoutineName, m => m);
   

来源：https://stackoverflow.com/questions/30716092/how-to-put-objects-into-a-dictionary-using-dapper-in-c