Question

我正在尝试在C＃中的SqlCommand中执行存储过程。

这是C＃中的代码：

string s = ConfigurationManager.ConnectionStrings["connection"].ToString();
SqlConnection conn = new SqlConnection(s);

conn.Open();

SqlCommand cmd = new SqlCommand("Signup1", conn);
cmd.CommandType = CommandType.StoredProcedure;

string password = TextBox2.Text;
cmd.Parameters.Add(new SqlParameter("@email", email));

SqlParameter pass = cmd.Parameters.Add("@password", SqlDbType.VarChar, 50);
pass.Value = password;

SqlParameter usertype = cmd.Parameters.Add("@usrtype", SqlDbType.VarChar, 50);
usertype.Value =usertype.Value;

cmd.ExecuteNonQuery();

conn.Close();

这是存储过程：

Create Proc Signup1
    @email varchar(20),
    @password Varchar(24),
    @usrtype Varchar(30)
as
    Insert into Members(email, password)
    Values(@email, @password)

    if @usrtype = 'Normal User'
    begin
        Insert into Normal_Users(email)
        Values(@email)
    end
    else if @usrtype = 'Development Team'
    begin
        Insert into Development_Eeams(email)
        Values(@email)
    end
    else if @usrtype = 'Verified Reviewer'
    begin
        Insert into Verified_reviewers(email)
        Values(@email)
    end
    else
        raiserror('Invalid type',16,1)

当我执行命令时，我收到此错误

过程或函数'Signup1'需要参数'@password'，这是未提供的。

虽然我确实给了程序参数的值，但解决方案是什么？感谢

Answer 1

string email = //where are you getting the email address
string password = TextBox2.Text;
string s = ConfigurationManager.ConnectionStrings["connection"].ToString();
using (SqlConnection connStr new SqlConnection(s);
using (SqlCommand cmd = new SqlCommand("Signup1", connStr))
{
    c.Open();
    command.Parameters.Add(new SqlParameter("@email", SqlDbType.VarChar) { Value = email });
    command.Parameters.Add(new SqlParameter("@password", SqlDbType.VarChar) { Value = password });
    command.Parameters.Add(new SqlParameter("@usrtype", SqlDbType.VarChar) { Value = userType }); //Where are you assigning userType
    cmd.ExecuteNonQuery();
}

如果顶部示例是复杂的，那么您可以使用Parameters.AddWithValue函数并让DB Server处理解析数据类型，例如

string email = //where are you getting the email address
string password = TextBox2.Text;
string s = ConfigurationManager.ConnectionStrings["connection"].ToString();
using (SqlConnection connStr new SqlConnection(s);
using (SqlCommand cmd = new SqlCommand("Signup1", connStr))
{
    c.Open();
    command.Parameters.AddWithValue("@email", email);
    command.Parameters.AddWithValue"@password", password);
    command.Parameters.AddWithValue("@usrtype", userType); //Where are you assigning userType
    cmd.ExecuteNonQuery();
}

存储过程或函数需要未提供的参数

1 个答案: