Store procedure - Procedure or function Validate_User has too many arguments specified.

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C#

SQL

I am trying to call a simple SP in c#, and when I execute my login method, it throws the following exception --> Procedure or function Validate_User has too many arguments specified..

Here is my code:

int user_id = 0;
            string constr = ConfigurationManager.ConnectionStrings["dummyConnectionString"].ConnectionString;
            using (SqlConnection con = new SqlConnection(constr))
            {
                using (SqlCommand cmd = new SqlCommand("Validate_User"))
                {
                    cmd.CommandType = CommandType.StoredProcedure;
                    cmd.Parameters.AddWithValue("@Username", Login1.UserName);
                    cmd.Parameters.AddWithValue("@Password", Login1.Password);
                    cmd.Parameters.AddWithValue("@id", user_id);
                    cmd.Connection = con;
                    con.Open();


                    SqlDataReader dr = cmd.ExecuteReader();
                    if (dr.Read())
                    {
                        con.Close();
                        Session["UserAuthentication"] = user_id;
                        Response.Redirect("~/Port/insert.aspx");
                       // FormsAuthentication.RedirectFromLoginPage(Login1.UserName, Login1.RememberMeSet);
                    }

SP

ALTER PROCEDURE [dbo].[Validate_User]
      @Username NVARCHAR(50),
      @Password NVARCHAR(50)
AS
BEGIN
      SET NOCOUNT ON;
     
      SELECT username, [password], id
      FROM [dbo].[User] 
	  WHERE Username = @Username AND [password] = @Password
     

END

Is there issue with my SP or am I missing something my C# code.
Thank you for your help.