存儲過程或函數期望沒有提供的參數

Question

我正試圖在C＃中的SqlCommand中執行存儲過程。

這是在C＃代碼：

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();  

這是存儲過程：

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) 

當我執行該命令出現此錯誤

過程或函數' Signup1'需要參數'@password'，它沒有提供。

雖然我給過程的參數值是多少，解決方法是什麼？由於

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(); 
} 

如果上面的例子是複雜的，那麼你可以使用Parameters.AddWithValue功能，讓數據庫服務器處理解決例如

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(); 
}