有谁能告诉我如何填充界面IAccount
中的字段?我在x.Add(new IAccount ...
public class IPersonRepo : IAccount
{
string connectionstring = @"Server=SLI002/SQLEXPRESS;Database=atengturonDB;Trusted_Connection=true;";
public int AccountsID
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public byte[] AccountUserName
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public byte[] AccountPassword
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public byte[] AccountSalt
{
get
{
throw new NotImplementedException();
}
set
{
throw new NotImplementedException();
}
}
public void getAccount()
{
SqlConnection conn = new SqlConnection(connectionstring);
using (SqlCommand comm = new SqlCommand())
{
List<IAccount> x = new List<IAccount>();
comm.Connection = conn;
comm.CommandText = "Select AccountsID,AccountsUserName,AccountsPassword,AccountsSalt from Accounts";
comm.CommandType = CommandType.Text;
SqlDataReader reader = null;
conn.Open();
comm.ExecuteNonQuery();
reader = comm.ExecuteReader();
while (reader.Read())
{
x.Add(new IAccount
{
AccountsID = (int)reader["AccountsID"],
AccountUserName = (byte[])reader["AccountsUserName"],
AccountPassword = (byte[])reader["AccountsPassword"],
AccountSalt = (byte[])reader["AccountsSalt"]
});
}
conn.Close();
}
}
}
答案 0 :(得分:0)
请将IPersonRepo
重命名为PersonRepo
,前缀I
表示接口,但显然是类。其次,它看起来不像repo(= repository),但像Person
(但这是有争议的...... :))
第三,您正在尝试创建接口 - 但您必须实现该接口的实例类:
//x.Add(new IAccount
//x.Add(new IPersonRepo
//x.Add(new PersonRepo
x.Add(new Person
{
AccountsID = (int)reader["AccountsID"],
AccountUserName = (byte[])reader["AccountsUserName"],
AccountPassword = (byte[])reader["AccountsPassword"],
AccountSalt = (byte[])reader["AccountsSalt"]
});
第四个也是最后一个,也许你应该看看任何ORM,比如NHibernate或Entity Framework。可以帮到你,但是你的电话:)
答案 1 :(得分:0)
首先,决定使用类名时不要使用I
前缀。这不是编译错误,但它很混乱,因为约定是使用I作为接口名称的前缀。
因此,您的课程应该被称为PersonRepo
,而不是IPersonRepo
(但是,您可以将以I
开头的类命名为(Ice
),只是不要使用I
作为前缀)
第二,您无法实例化界面。您可以使用接口类型的变量,但实例化实际的类:IAccount MyAccount = new PersonRepo()
;