SQL Exception:Function or Procedure - Name - has too many arguments specified.

Hello everyone. I'm working on an application and I keep getting this exception when i run the code listed below. I'm new here. Please help.

My connection string in My Global.asax file:

Application["connstr"] = "data source=SERVER\\VSDOTNET;initial catalog=MedicalCenterDB;integrated security=SSPI;persis" +
    "t security info=False;workstation id=SERVER";
   

private void submitbtn_Click(object sender, System.Web.UI.ImageClickEventArgs e)
  {
   
   System.Data.SqlClient.SqlConnection cn;
   System.Data.SqlClient.SqlConnection cn2;
   System.Data.SqlClient.SqlCommand cmd;
   System.Data.SqlClient.SqlCommand cmd2;
   System.Data.SqlClient.SqlDataReader dr;
 

   cn = new System.Data.SqlClient.SqlConnection();
   cn2 = new System.Data.SqlClient.SqlConnection();
   cn.ConnectionString = Application["connstr"].ToString();

   cn2.ConnectionString = Application["connstr"].ToString();

   cmd = new System.Data.SqlClient.SqlCommand("selectUserfromCard",cn);
   cmd2 = new System.Data.SqlClient.SqlCommand("saveUser",cn2);

   cmd.CommandType=CommandType.StoredProcedure;
   cmd2.CommandType=CommandType.StoredProcedure;
   
   try
   {
    cn.Open();
    cmd.Parameters.Add("@idcard",idcard.Text);
    //
    //cmd2
    //
    

    dr = cmd.ExecuteReader(CommandBehavior.CloseConnection);

    if(dr.Read())
    {
     resultlbl.Text = "A User with this Card already exists";
    
    }
    else
    {
     string dob = this.bday.SelectedItem.Value.ToString() + "/" + this.bmonth.SelectedItem.Value.ToString() + "/" + this.byear.SelectedItem.Value.ToString();

     cmd2.Parameters.Add("@idcard",idcard.Text);
     cmd2.Parameters.Add("@Password",password.Value);
     cmd2.Parameters.Add("@Firstname",Firstname.Text);
     cmd2.Parameters.Add("@Lastname",Lastname.Text);
     cmd2.Parameters.Add("@Othername",Othername.Text);
     cmd2.Parameters.Add("@Sex",this.sex.SelectedItem.Value.ToString());
     cmd2.Parameters.Add("@Email",email.Text);
     cmd2.Parameters.Add("@Nationality",Nationality.Text);
     cmd2.Parameters.Add("@State",State.Text);
     cmd2.Parameters.Add("@Tribe",Tribe.Text);
     cmd2.Parameters.Add("@Occupation",Occupation.Text);
     cmd2.Parameters.Add("@dateofbirth",dob);
     

     cn2.Open();
     cmd2.ExecuteNonQuery();

     resultlbl.Text = "Info Saved";
    
    }
   }
   catch(System.Exception eLoad)
   {
    resultlbl.Text = eLoad.Message;
   
   }
   finally
   {
    
    cn.Close();
    cn2.Close();
   }
  
  
  }

Thanks a lot.