C# 存储过程在SQL Management Studio中运行，但不在代码中运行

我在两个表中输入和更新数据，在SQl server中使用SP work创建查询是可以的，但是在C中查询表单会产生错误

以下是我的表格定义：

CREATE TABLE [dbo].[nationality](
    [nationalitycode] [int] IDENTITY(1,1) NOT NULL,
    [nationality] [nvarchar](50) NULL,
        CONSTRAINT [PK_nationality] PRIMARY KEY CLUSTERED 
(
    [nationalitycode] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
/****** Object:  Table [dbo].[user]   
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

-------------------------------------------------------------------------------------------
CREATE TABLE [dbo].[user](
    [code] [int] IDENTITY(1,1) NOT NULL,
    [name] [nvarchar](50) NULL,
    [lastname] [nvarchar](50) NULL,
    [nationalitycode] [int] NULL,
        CONSTRAINT [PK_user] PRIMARY KEY CLUSTERED 
(
    [code] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

ALTER proc [dbo].[sp_insertdata]
@name nvarchar(50),
@lastname nvarchar(50),
@nationality nvarchar(50)
as
if  not exists(select * from nationality where nationality=@nationality)
begin
insert into nationality(nationality)values(@nationality)
end
declare @id int
select @id=nationalitycode from nationality where nationality=@nationality

insert into usuario(name,lastname,nationalitycode) values (@name,@lastname,@id)

当我运行以下代码编辑我得到的数据时：

Sqlexception未经处理过程或函数“sp_update”需要 未提供参数'@lastName'

这是我的编辑代码：

case menu.Edit:
   cmd.CommandText = "sp_update";
    cmd.Parameters.AddWithValue("code", txtCode.Text);
    cmd.Parameters.AddWithValue("name", txtName.Text);
    cmd.Parameters.AddWithValue("lastname", txtLastName.Text);
    cmd.Parameters.AddWithValue("nationality", txtNationality.Text);
    fila = cmd.ExecuteNonQuery();
    if (fila!=0)
    {
       MessageBox.Show("Update ok" +  cmd.Parameters["code"].Value.ToString());
    }
    break;

当我运行编辑代码时，我得到：

Sqlexception未经处理过程或函数“sp_update”需要 未提供参数'@lastName'

以下是存储过程定义：

CREATE TABLE [dbo].[nationality](
    [nationalitycode] [int] IDENTITY(1,1) NOT NULL,
    [nationality] [nvarchar](50) NULL,
        CONSTRAINT [PK_nationality] PRIMARY KEY CLUSTERED 
(
    [nationalitycode] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO
/****** Object:  Table [dbo].[user]   
SET ANSI_NULLS ON
GO
SET QUOTED_IDENTIFIER ON
GO

-------------------------------------------------------------------------------------------
CREATE TABLE [dbo].[user](
    [code] [int] IDENTITY(1,1) NOT NULL,
    [name] [nvarchar](50) NULL,
    [lastname] [nvarchar](50) NULL,
    [nationalitycode] [int] NULL,
        CONSTRAINT [PK_user] PRIMARY KEY CLUSTERED 
(
    [code] ASC
)WITH (PAD_INDEX  = OFF, STATISTICS_NORECOMPUTE  = OFF, IGNORE_DUP_KEY = OFF, ALLOW_ROW_LOCKS  = ON, ALLOW_PAGE_LOCKS  = ON) ON [PRIMARY]
) ON [PRIMARY]
GO

ALTER proc [dbo].[sp_insertdata]
@name nvarchar(50),
@lastname nvarchar(50),
@nationality nvarchar(50)
as
if  not exists(select * from nationality where nationality=@nationality)
begin
insert into nationality(nationality)values(@nationality)
end
declare @id int
select @id=nationalitycode from nationality where nationality=@nationality

insert into usuario(name,lastname,nationalitycode) values (@name,@lastname,@id)

/**************************************************/

---

您的insert存储过程和insert代码有问题。存储过程没有用于代码的参数，但您正在将其作为输入传递。您的代码应为：

case menu.New:
    cmd.CommandText = "sp_insertdata";
    cmd.Parameters.AddWithValue("@name", txtName.Text);
    cmd.Parameters.AddWithValue("@lastName", txtlastName.Text);
    cmd.Parameters.AddWithValue("@nationality", txtNationality.Text);
    cmd.Parameters["code"].Direction = ParameterDirection.Output;
    fila = cmd.ExecuteNonQuery();

Insert stored proc应包括代码作为输出：

ALTER proc [dbo].[sp_insertdata]
   @name nvarchar(50),
   @lastname nvarchar(50),
   @nationality nvarchar(50),
   @code int output
as
   if  not exists(select * from nationality where nationality=@nationality)
   begin
    insert into nationality(nationality)values(@nationality)
   end
   declare @id int
   select @id=nationalitycode from nationality where nationality=@nationality

   insert into usuario(name,lastname,nationalitycode) values (@name,@lastname,@id)

   SET @code=SCOPE_IDENTITY()

对于您的更新代码，我将更改为：

cmd.CommandText = "sp_update";
cmd.Parameters.AddWithValue("@code", txtCode.Text);
cmd.Parameters.AddWithValue("@name", txtName.Text);
cmd.Parameters.AddWithValue("@lastname", txtLastName.Text);
cmd.Parameters.AddWithValue("@nationality", txtNationality.Text);

---

很好的回答，现在我有另一个小问题来更新表单上的表，只显示在文本字段中。字段代码中记录的编号我可以删除代码编号并更新记录。。有没有办法解决这个问题？@Andreu：你的后续问题看起来超出了原来问题的范围，你可能想把它作为一个单独的问题来问。你可能还想重新措辞，因为我不知道你在问什么；记住，如果这个问题对你有用，就把它标记为已接受。