存儲過程在SQL管理工作室中運行，但不在代碼中

Question

我輸入和更新兩個表中的數據，使用SQl服務器中的SP工作創建查詢都可以，但要在C＃中的窗體上諮詢我會生成一個錯誤。

這裏是我的表定義：

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 

當我運行下面的代碼編輯的數據，我得到：

SQLEXCEPTION是未處理的過程或函數「sp_update」預計 參數「@LastName '， 那是不供給的。

private void btnRec_Click(object sender, EventArgs e) 
{ 
    SqlCommand cmd = new SqlCommand("", cn); 
    cmd.CommandType = CommandType.StoredProcedure; 
    cn.Open(); 
    int fila = 0; 
    switch (menup) 
    { 
     case menu.New: 
     cmd.CommandText = "sp_insertdata"; 
     cmd.Parameters.AddWithValue("code", 0); 
     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(); 
     if (fila!=0) 
     { 
      MessageBox.Show("Good Registry" +  cmd.Parameters["code"].Value.ToString()); 
     } 
     break; 

這裏是我的編輯代碼：

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; 

當我運行編輯代碼我得到：

SQLEXCEPTION是未處理的過程或函數 'sp_update' 預計 參數「 @lastName'，它沒有提供。

這裏是存儲過程定義：

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) 

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

ALTER proc [dbo].[sp_update] 
@code int, 
@name varchar(50), 
@lastname varchar(50), 
@nationality varchar(50) 
as 

if not exists (select * from nationality where nationality=@nationality) 
begin 
insert into nationality(nationality)values(@nationality) 
end 

update user 
SET name= @name,lastname=@lastname,nationalitycode=(select nationalitycode from nationality where nationality=@nationality) 
where code = @code 

Answer 1

您在插入存儲過程和插入代碼時遇到問題。存儲過程沒有代碼參數，但是您將它作爲輸入傳遞。您的代碼應閱讀：

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(); 

的插入存儲過程應該包括代碼的輸出：

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() 

爲了您的更新代碼，我將改變爲：

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);