how to use webservice please check its ok ?

[WebMethod]
    public string AddUser(Int64 UID,String Uname,String Password ,String Role,String LastUpdate,String Fname,String Lname,String Company,String City,String State,String Phone,String Email,String Jtype)
    {
        if (UID == 0)
        {
            if (!_obj.SUserMasters.Any(u => u.Username == Uname.Trim()))
            {
                SUserMaster _Utb = new SUserMaster
                {
                    Username = Uname.Trim(),
                    Password = Password.Trim(),
                    Role = Role.Trim(),
                    Lastupdate = LastUpdate,
                    IsActive = true
                };
                _obj.SUserMasters.InsertOnSubmit(_Utb);
                try
                {
                    _obj.SubmitChanges();
                    Int64 _UserID = _Utb.UserID;
                    if (Role == "J")
                    {
                        AddJ(_UserID, Fname, Lname, Company, City, State, Phone, Email, Jtype, "I");
                    }
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);

                }
            }
            //else { // user exists }
            
        }
        else
        {
            var query = from SUser in _obj.SUserMasters where SUser.UserID == UID select SUser;
            // Execute the query, and change the column values
            // you want to change.
            foreach (var _itme in query)
            {
             //   _itme.Username = Uname.Trim();
                _itme.Password = Password.Trim();
                _itme.Role = Role.Trim();
                _itme.Lastupdate = LastUpdate.Trim();
                
                // Insert any additional changes to column values.
            }
            try
            {
                _obj.SubmitChanges();
                AddJ(UID, Fname, Lname, Company, City, State, Phone, Email, Jtype,"U");
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                // Provide for exceptions.
            }

        }
        // Submit the changes to the database.
       
        //
        return "Thanks !";
    }
    [WebMethod]
    public string AddJ(Int64 UID, String Fname, String Lname, String Company, String City, String State, String Phone, String Email, String type, String flag)
    {
        if (flag == "I")
        {
            SJudgeInfo _jtb = new SJudgeInfo
            {
                First_Name = Fname.Trim(),
                Last_Name = Lname.Trim(),
                Company = Company.Trim(),
                City = City,
                JState = State,
                Telephone=Phone,
                JEmail=Email,
                JType=type
            };
            _obj.SJudgeInfos.InsertOnSubmit(_jtb);
            try
            {
                _obj.SubmitChanges();
                //Int64 _UserID = _Utb.UserID;

            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                // Provide for exceptions.
            }


        }
        else
        {
            var query = from SUser in _obj.SJudgeInfos where SUser.UserID == @UID select SUser;
            // Execute the query, and change the column values
            // you want to change.
            foreach (var _itme in query)
            {
               _itme.First_Name = Fname.Trim();
                _itme.Last_Name = Lname.Trim();
                _itme.Company = Company.Trim();
                _itme.City = City;
                _itme.JState = State;
                _itme.Telephone = Phone;
                _itme.JEmail = Email;
                _itme.JType = type;
                // Insert any additional changes to column values.
            }
            try
            {
                _obj.SubmitChanges();
            }
            catch (Exception e)
            {
                Console.WriteLine(e);
                // Provide for exceptions.
            }

        }
        return "Thanks !";
    }
    [WebMethod]
    public string AddDivision(Int64 ID, String name)
    {
        if (ID == 0)
        {
            if (!_obj.SDivisions.Any(u => u.Division == name.Trim()))
            {
                SDivision _tb = new SDivision
                {
                    Division = name.Trim(),
                };
                _obj.SDivisions.InsertOnSubmit(_tb);
                try
                {
                    _obj.SubmitChanges();
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);

                }
            }
        }
        else {
            if (!_obj.SDivisions.Any(u => u.Division == name.Trim()))
            {
                var query = from SUser in _obj.SDivisions where SUser.DivisionID == ID select SUser;
                // Execute the query, and change the column values
                // you want to change.
                foreach (var _itme in query)
                {
                 
                    _itme.Division = name.Trim();
                 
                }
                try
                {
                    _obj.SubmitChanges();
                 
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);
                    // Provide for exceptions.
                }
            }
        }
        return "Thanks !";
    }
    [WebMethod]
    public string AddWeights(Int64 ID, String name)
    {
        if (ID == 0)
        {
            if (!_obj.SWeights.Any(u => u.Weight == name.Trim()))
            {
                SWeight _tb = new SWeight
                {
                    Weight = name.Trim(),
                };
                _obj.SWeights.InsertOnSubmit(_tb);
                try
                {
                    _obj.SubmitChanges();
                }
                catch (Exception e)
                {
                    Console.WriteLine(e);

                }
            }
        }
        else
        {
            if (!_obj.SWeights.Any(u => u.Weight == name.Trim()))
            {
                var query = from SUser in _obj.SWeights where SUser.WeightID == ID select SUser;
                // Execute the query, and change the column values
                // you want to change.
                foreach (var _itme in query)
                {

                    _itme.Weight = name.Trim();

                }
                try
                {
                    _obj.SubmitChanges();

                }
                catch (Exception e)
                {
                    Console.WriteLine(e);
                    // Provide for exceptions.
                }
            }
        }
        return "Thanks !";
    }