c# - 如何在 C# 中使用 Dapper 将对象放入字典中？

Question

我有一个像下面这样的字典:

Dictionary<string,SP> dict;

包含一个字符串和一个 SP 对象。

我想做以下事情

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));

以上代码无效。如何使用上述信息创建 SP 对象。我有一个采用这三个参数的构造函数。

Answer 1

1. 创建合适的模型

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

2. 将您的查询映射到模型属性，将其选择到字典

   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);