所以我使用存储过程在使用C＃的测试MVC应用程序中向db添加新用户。
我一直收到错误，我认为这是因为我将新添加的用户的ID返回到数据库，注释掉代码什么都没做:(或者说它给了我同样的错误但抱怨另一个变量。
有趣的是，它成功地添加了一个用户，除非它抛出异常。
我仍然希望将ID返回给调用程序，我仍然希望使用参数化查询。
以下代码：
#region AddUser
public static bool AddUser(Models.User user)
{
bool result = false;
Models.UserRegistrationPasswordsEntities1 db = new Models.UserRegistrationPasswordsEntities1();
var queryResult = db.Users.SqlQuery(@"EXECUTE uspAddUser @1, @2, @3, @4, @5, @6",
new SqlParameter("1", user.userFirstName),
new SqlParameter("2", user.userLastName),
new SqlParameter("3", user.userName),
new SqlParameter("4", user.userEmail),
new SqlParameter("5", user.userPassword),
new SqlParameter("6", user.userDateOfBirth)).Single();
// the ternary opertor is pretty awesome
result = queryResult == null ? false : true;
return result;
}
#endregion
下面的Model.user：
public partial class User
{
public int userID { get; set; }
[Display(Name = "First Name")]
[DataType(DataType.Text)]
[Required(AllowEmptyStrings = false, ErrorMessage ="First name required")]
public string userFirstName { get; set; }
[Display(Name = "Last Name")]
[DataType(DataType.Text)]
[Required(AllowEmptyStrings = false, ErrorMessage = "Last name required")]
public string userLastName { get; set; }
[Display(Name = "Username")]
[DataType(DataType.Text)]
[Required(AllowEmptyStrings = false, ErrorMessage = "Username required")]
public string userName { get; set; }
[Display(Name = "Email")]
[DataType(DataType.EmailAddress)]
[Required(AllowEmptyStrings = false, ErrorMessage = "email is required")]
public string userEmail { get; set; }
[Display(Name = "Date Of Birth")]
[DataType(DataType.DateTime)]
[Required(AllowEmptyStrings = false, ErrorMessage = "Date of Birth is required")]
[DisplayFormat(ApplyFormatInEditMode = true, DataFormatString = "{0:MM/dd/yyyy}")]
public DateTime userDateOfBirth { get; set;}
[Display(Name = "Password")]
[DataType(DataType.Password)]
[Required(AllowEmptyStrings = false, ErrorMessage = "Password is required")]
[MinLength(6, ErrorMessage = "Minimum of 6 characters required")]
public string userPassword { get; set; }
[Display(Name = "Confirm Password")]
[DataType(DataType.Password)]
[Required(AllowEmptyStrings = false, ErrorMessage = "Confirm password is required")]
[Compare("userPassword", ErrorMessage = "Confirm password and password do not match")]
public string userConfirmPassword { get; set; }
public bool userStatus { get; set; }
public bool userEmailVerificationStatus { get; set; }
public System.Guid userActivationCode { get; set; }
}
以下错误：
这是我收到的错误，存储过程代码注释掉，如下所示。如果我取消注释它会对userFirstName
数据阅读器与指定的“UserRegistrationPasswordsModel.User”不兼容。类型为“userID”的成员在数据读取器中没有相应的具有相同名称的列。
创建下表：
CREATE TABLE [dbo].[Users] (
[userID] INT IDENTITY (1, 1) NOT NULL,
[userFirstName] VARCHAR (50) NOT NULL,
[userLastName] VARCHAR (50) NOT NULL,
[userName] VARCHAR (50) NOT NULL,
[userEmail] VARCHAR (50) NOT NULL,
[userPassword] VARCHAR (255) NOT NULL,
[userStatus] BIT DEFAULT ((0)) NOT NULL,
[userEmailVerificationStatus] BIT DEFAULT ((0)) NOT NULL,
[userActivationCode] UNIQUEIDENTIFIER DEFAULT (newid()) NOT NULL,
[userDateOfBirth] DATETIME NOT NULL,
PRIMARY KEY CLUSTERED ([userID] ASC)
);
以下存储过程
请注意，底部的SELECT被注释掉，因为我认为可能将ID返回给调用程序是问题所在。在我的最终解决方案中，如果可能的话，我仍然希望以这种方式将Id返回给调用程序。
CREATE PROCEDURE uspAddUser
@userFirstName VARCHAR(50)
,@userLastName VARCHAR(50)
,@userName VARCHAR(50)
,@userEmail VARCHAR(50)
,@userPassword VARCHAR(100)
,@userDateOfBirth DATETIME
AS
SET NOCOUNT ON -- Report Only Errors
SET XACT_ABORT ON -- Rollback transaction on error
BEGIN TRANSACTION
DECLARE @userID INTEGER
-- CREATE new record
INSERT INTO Users(userFirstName, userLastName, userName, userEmail, userPassword, userStatus, userEmailVerificationStatus, userDateOfBirth)
VALUES(@userFirstName, @userLastName, @userName, @userEmail, @userPassword, 0 ,0, @userDateOfBirth) -- 1 = Active
---- return ID to calling program
--SELECT UserID FROM Users WHERE userFirstName = @userFirstName AND
-- userLastName = @userLastName AND
-- userName = @userName AND
-- userEmail = @userEmail
COMMIT TRANSACTION
我在以下搜索解决方案时访问的资源：
Exception : Execute Insert Stored Procedure using Entity framework ExecuteStoreQuery function
Get return value from stored procedure
Using Entity Framework, should I use RETURN or SELECT in my stored procedures?
感谢所有和所有帮助，谢谢。
答案 0 :(得分：1)
作为一般规则，当使用SELECT语句与SqlQuery方法（而不是单个属性）时，您需要返回full part of the entity。将存储过程内的SELECT语句更改为：
SELECT TOP 1 * FROM Users
WHERE userFirstName = @userFirstName AND userLastName = @userLastName
AND userName = @userName AND userEmail = @userEmail
然后，将其执行到queryResult：
var queryResult = db.Users.SqlQuery(@"EXECUTE uspAddUser @1, @2, @3, @4, @5, @6",
new SqlParameter("1", user.userFirstName),
new SqlParameter("2", user.userLastName),
new SqlParameter("3", user.userName),
new SqlParameter("4", user.userEmail),
new SqlParameter("5", user.userPassword),
new SqlParameter("6", user.userDateOfBirth)).Single();
如果您希望从userID方法获取AddUser，可以从上面的查询结果中调用它（并将返回类型更改为int而不是bool）：
int userId = queryResult.userID;
return userId;
旁注：
由于userID被声明为主键标识列，因此将KeyAttribute和DatabaseGeneratedAttribute设置为相应的属性作为EF模型类中的主键：
public partial class User
{
[Key]
[DatabaseGenerated(DatabaseGeneratedOption.Identity)]
public int userID { get; set; }
// other properties
}
类似问题：
does not have a corresponding column in the data reader with the same name