//---------------------------------------------------------------------------------------------------------------------------------------------------

        //Setting parametres for a user.
        private void SetParametersButton_Click(object sender, EventArgs e)
        {
            //Creating a new layout for setting parameters of a user.
            AlertDialog.Builder Object   = new AlertDialog.Builder(ListOfParameters.activity);
            LayoutInflater      inflater = LayoutInflater.From(ListOfParameters.activity);
            LinearLayout        layout   = new LinearLayout(ListOfParameters.activity);
            View FormViewsSetParametres  = inflater.Inflate(Resource.Layout.parametres_Set, layout);

            Object.SetView(FormViewsSetParametres);

            //Elements from the layout.
            NumberPicker HeightPicker = FormViewsSetParametres.FindViewById <NumberPicker>(Resource.Id.HeightPicker);
            NumberPicker WeightPicker = FormViewsSetParametres.FindViewById <NumberPicker>(Resource.Id.WeightPicker);

            //Pickers parameters.
            HeightPicker.MinValue = 50;
            HeightPicker.MaxValue = 250;

            if (DatabaseUser.GetUser(User.CurrentUser).Parameters.Count != 0)
            {
                HeightPicker.Value = (int)DatabaseUser.GetUser(User.CurrentUser).Parameters.Last().Height;
            }
            else
            {
                HeightPicker.Value = 150;
            }

            WeightPicker.MinValue = 30;
            WeightPicker.MaxValue = 500;

            if (DatabaseUser.GetUser(User.CurrentUser).Parameters.Count != 0)
            {
                WeightPicker.Value = (int)DatabaseUser.GetUser(User.CurrentUser).Parameters.Last().Weight;
            }
            else
            {
                WeightPicker.Value = 60;
            }

            //Action on pressing posititve button.
            Object.SetPositiveButton(Resource.String.Action_AddEntry, new EventHandler <DialogClickEventArgs>(delegate(object Sender, DialogClickEventArgs e1)
            {
                //If the user is choosed.
                if (Classes.User.CurrentUser != -1)
                {
                    //Getting data and changing the symbols.
                    DateTime DTForData = System.DateTime.Now;

                    //Creating temporary parameters for a new user.
                    ParametresOfUser TempParametres = new ParametresOfUser(DTForData, WeightPicker.Value, HeightPicker.Value);

                    //For showing results of changes.
                    string ForIndexResults      = "";
                    string ForParametersResults = "";

                    //Change of user's BMI.
                    if (!HelpclassDataValidation.ComparingValues(TempParametres.Index, 15.0))
                    {
                        ForIndexResults = Resources.GetString(Resource.String.MessageParameters_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.MessageParameters_VerySeverelyUnderweight);
                    }

                    else if (!HelpclassDataValidation.ComparingValues(TempParametres.Index, 16.0))
                    {
                        ForIndexResults = Resources.GetString(Resource.String.MessageParameters_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.MessageParameters_SeverelyUnderweight);
                    }

                    else if (!HelpclassDataValidation.ComparingValues(TempParametres.Index, 18.5))
                    {
                        ForIndexResults = Resources.GetString(Resource.String.MessageParameters_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.MessageParameters_Underweight);
                    }

                    else if (!HelpclassDataValidation.ComparingValues(TempParametres.Index, 25.0))
                    {
                        ForIndexResults = Resources.GetString(Resource.String.MessageParameters_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.MessageParameters_HealthyWeight);
                    }

                    else if (!HelpclassDataValidation.ComparingValues(TempParametres.Index, 30.0))
                    {
                        ForIndexResults = Resources.GetString(Resource.String.MessageParameters_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.MessageParameters_Overweight);
                    }

                    else if (!HelpclassDataValidation.ComparingValues(TempParametres.Index, 35.0))
                    {
                        ForIndexResults = Resources.GetString(Resource.String.MessageParameters_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.MessageParameters_ModeratelyOverweight);
                    }

                    else if (!HelpclassDataValidation.ComparingValues(TempParametres.Index, 40.0))
                    {
                        ForIndexResults = Resources.GetString(Resource.String.MessageParameters_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.MessageParameters_SeverelyOverweight);
                    }

                    else
                    {
                        ForIndexResults = Resources.GetString(Resource.String.MessageParameters_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.MessageParameters_VerySeverelyOverweight);
                    }

                    /*Change of user's weight and height.*/

                    //If the list of parameters isn't empty.
                    if (DatabaseUser.GetUser(User.CurrentUser).Parameters.Count != 0)
                    {
                        //Ñhange of weight.
                        if (DatabaseUser.GetUser(User.CurrentUser).Parameters.Last().Weight > TempParametres.Weight)
                        {
                            ForParametersResults = Resources.GetString(Resource.String.MessageParameters_Lost) + " " + Math.Abs(DatabaseUser.GetUser(User.CurrentUser).Parameters.Last().Weight - TempParametres.Weight) + " " + Resources.GetString(Resource.String.other_Kilograms);
                        }

                        else if (DatabaseUser.GetUser(User.CurrentUser).Parameters.Last().Weight < TempParametres.Weight)
                        {
                            ForParametersResults = Resources.GetString(Resource.String.MessageParameters_Gained) + " " + Math.Abs(DatabaseUser.GetUser(User.CurrentUser).Parameters.Last().Weight - TempParametres.Weight) + " " + Resources.GetString(Resource.String.other_Kilograms);
                        }

                        //Ñhange of height.
                        if (DatabaseUser.GetUser(User.CurrentUser).Parameters.Last().Height < TempParametres.Height)
                        {
                            ForParametersResults = ForParametersResults + " " + Resources.GetString(Resource.String.MessageGeneral_YouAre) + " " + Math.Abs(DatabaseUser.GetUser(User.CurrentUser).Parameters.Last().Height - TempParametres.Height) + " " + Resources.GetString(Resource.String.other_Centimetres);
                        }
                    }

                    //Showing info.
                    View view = inflater.Inflate(Resource.Layout.message_Parameters, null);
                    var txt1  = view.FindViewById <TextView>(Resource.Id.TextForResult);
                    var txt2  = view.FindViewById <TextView>(Resource.Id.TextForComparing);
                    txt1.Text = ForIndexResults;
                    txt2.Text = ForParametersResults;

                    var toast = new Toast(Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity)
                    {
                        Duration = ToastLength.Long,
                        View     = view
                    };
                    toast.Show();

                    //Updating user parameters.
                    User TempUser = DatabaseUser.GetUser(User.CurrentUser);
                    TempUser.Parameters.Add(TempParametres);
                    DatabaseUser.SQConnection.UpdateWithChildren(TempUser);

                    //Getting parameters of currrent user from DB.
                    ListForUserParameters.Add(new TableRowParameters(TempParametres.EntryDate.ToShortDateString(), TempParametres.Weight, TempParametres.Height, TempParametres.Index));

                    if (TempParametres.Weight > maxWeight)
                    {
                        maxWeight = TempParametres.Weight;
                    }
                    if (TempParametres.Height > maxHeight)
                    {
                        maxHeight = TempParametres.Height;
                    }
                    if (TempParametres.Weight < minWeight || minWeight == -1)
                    {
                        minWeight = TempParametres.Weight;
                    }
                    if (TempParametres.Height < minHeight || minHeight == -1)
                    {
                        minHeight = TempParametres.Height;
                    }

                    if (maxWeight > 0)
                    {
                        WeightText.Text = maxWeight.ToString();
                    }
                    if (maxHeight > 0)
                    {
                        HeightText.Text = maxHeight.ToString();
                    }
                    if (minWeight > 0)
                    {
                        WeightText1.Text = minWeight.ToString();
                    }
                    if (minHeight > 0)
                    {
                        HeightText1.Text = minHeight.ToString();
                    }
                    BMIText.Text  = "-";
                    BMIText1.Text = "-";

                    //Setting the parameters to the list.
                    HelpclassListAdapter AdapterForUserParameters = new HelpclassListAdapter(Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity, ListForUserParameters);
                    ListForParameters.Adapter = AdapterForUserParameters;

                    //If there isn't a footer, adding one.
                    if (ListForParameters.FooterViewsCount == 0)
                    {
                        ListForParameters.AddFooterView(Footer);
                    }
                }

                //If the user is not choosed.
                else
                {
                    HelpclassDataValidation.MakingErrorToast(Resource.String.ErrorMessage_Unchoosed);
                }
            }));

            //Action on pressing negative button.
            Object.SetNegativeButton(Resource.String.Cancel, new EventHandler <DialogClickEventArgs>(delegate(object Sender, DialogClickEventArgs e1) {}));

            //Showing the new form for entering the parametres.
            Object.Show();
        }
        //---------------------------------------------------------------------------------------------------------------------------------------------------

        //Setting parametres for a user.
        private void SetParametersButton_Click(object sender, EventArgs e)
        {
            //Creating a new layout for setting parameters of a user.
            AlertDialog.Builder Object   = new AlertDialog.Builder(ListOfParameters.activity);
            LayoutInflater      inflater = LayoutInflater.From(ListOfParameters.activity);
            LinearLayout        layout   = new LinearLayout(ListOfParameters.activity);
            View FormViewsSetParametres  = inflater.Inflate(Resource.Layout.parametres_Set, layout);

            Object.SetView(FormViewsSetParametres);

            //Action on pressing posititve button.
            Object.SetPositiveButton(Resource.String.Action_AddEntry, new EventHandler <DialogClickEventArgs>(delegate(object Sender, DialogClickEventArgs e1)
            {
                //If the user is choosed.
                if (Classes.User.CurrentUser != -1)
                {
                    //Getting data and changing the symbols.
                    string ForChangeWeight = FormViewsSetParametres.FindViewById <TextView>(Resource.Id.WeightEdit).Text;
                    string ForChangeHeight = FormViewsSetParametres.FindViewById <TextView>(Resource.Id.HeightEdit).Text;
                    DateTime DTForData     = System.DateTime.Now;

                    ForChangeWeight = ForChangeWeight.Replace(".", ",");
                    ForChangeHeight = ForChangeHeight.Replace(".", ",");

                    //If weight wasn't entered correctly.
                    if (!helpclass_DataValidation.CheckForLenth(ForChangeWeight, 0, 8) || !helpclass_DataValidation.CheckForValue(double.Parse(ForChangeWeight), 0, 250))
                    {
                        Toast.MakeText(Application.Context, helpclass_DataValidation.RequestToCorrectEnter(Resources.GetString(Resource.String.other_Weight)), ToastLength.Long).Show();
                    }

                    else
                    //If height wasn't entered correctly.
                    if (!helpclass_DataValidation.CheckForLenth(ForChangeHeight, 0, 8) || !helpclass_DataValidation.CheckForValue(double.Parse(ForChangeHeight), 0, 300))
                    {
                        Toast.MakeText(Application.Context, helpclass_DataValidation.RequestToCorrectEnter(Resources.GetString(Resource.String.other_Height)), ToastLength.Long).Show();
                    }

                    //If everything was entered correctly.
                    else
                    {
                        //Creating temporary parameters for a new user.
                        ParametresOfUser TempParametres = new ParametresOfUser(DTForData, double.Parse(ForChangeWeight), double.Parse(ForChangeHeight));

                        //For showing results of changes.
                        string ForIndexResults      = "";
                        string ForParametersResults = "";

                        //Creating a new layout for showing user changes.
                        AlertDialog.Builder Object_ = new AlertDialog.Builder(ListOfParameters.activity);
                        LayoutInflater inflater_    = LayoutInflater.From(ListOfParameters.activity);
                        LinearLayout layout_        = new LinearLayout(ListOfParameters.activity);
                        View parameters_Changes     = inflater.Inflate(Resource.Layout.parameters_Changes, layout_);
                        Object_.SetView(parameters_Changes);

                        //Change of user's BMI.
                        if (!helpclass_DataValidation.ComparingValues(TempParametres.Index, 15.0))
                        {
                            ForIndexResults = Resources.GetString(Resource.String.Message_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.Message_VerySeverelyUnderweight);
                        }

                        else if (!helpclass_DataValidation.ComparingValues(TempParametres.Index, 16.0))
                        {
                            ForIndexResults = Resources.GetString(Resource.String.Message_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.Message_SeverelyUnderweight);
                        }

                        else if (!helpclass_DataValidation.ComparingValues(TempParametres.Index, 18.5))
                        {
                            ForIndexResults = Resources.GetString(Resource.String.Message_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.Message_Underweight);
                        }

                        else if (!helpclass_DataValidation.ComparingValues(TempParametres.Index, 25.0))
                        {
                            ForIndexResults = Resources.GetString(Resource.String.Message_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.Message_HealthyWeight);
                        }

                        else if (!helpclass_DataValidation.ComparingValues(TempParametres.Index, 30.0))
                        {
                            ForIndexResults = Resources.GetString(Resource.String.Message_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.Message_Overweight);
                        }

                        else if (!helpclass_DataValidation.ComparingValues(TempParametres.Index, 35.0))
                        {
                            ForIndexResults = Resources.GetString(Resource.String.Message_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.Message_ModeratelyOverweight);
                        }

                        else if (!helpclass_DataValidation.ComparingValues(TempParametres.Index, 40.0))
                        {
                            ForIndexResults = Resources.GetString(Resource.String.Message_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.Message_SeverelyOverweight);
                        }

                        else
                        {
                            ForIndexResults = Resources.GetString(Resource.String.Message_BMIout) + " " + TempParametres.Index + Resources.GetString(Resource.String.Message_VerySeverelyOverweight);
                        }

                        //Actions on pressing positive button.
                        Object_.SetPositiveButton(Resource.String.OK, new EventHandler <DialogClickEventArgs>(delegate(object Sender_, DialogClickEventArgs e1_){}));

                        //
                        parameters_Changes.FindViewById <TextView>(Resource.Id.TextForIndex).Text = ForIndexResults;

                        //Change of user's weight and height.

                        //If the list of parameters isn't empty.
                        if (database_User.GetUser(User.CurrentUser).Parameters.Count != 0)
                        {
                            //Ñhange of weight.
                            if (database_User.GetUser(User.CurrentUser).Parameters.Last().Weight > TempParametres.Weight)
                            {
                                ForParametersResults = "You've lost " + Math.Abs(database_User.GetUser(User.CurrentUser).Parameters.Last().Weight - TempParametres.Weight) + " kilograms.";
                            }

                            else if (database_User.GetUser(User.CurrentUser).Parameters.Last().Weight < TempParametres.Weight)
                            {
                                ForParametersResults = "You've gained " + Math.Abs(database_User.GetUser(User.CurrentUser).Parameters.Last().Weight - TempParametres.Weight) + " kilograms.";
                            }

                            //Ñhange of height.
                            if (database_User.GetUser(User.CurrentUser).Parameters.Last().Height < TempParametres.Height)
                            {
                                ForParametersResults = ForParametersResults + " You're " + Math.Abs(database_User.GetUser(User.CurrentUser).Parameters.Last().Height - TempParametres.Height) + " centimeters taller now.";
                            }
                        }

                        //Setting the text in the field.
                        parameters_Changes.FindViewById <TextView>(Resource.Id.TextForParameters).Text = ForParametersResults;

                        Object_.Show();

                        //Updating user parameters.
                        User TempUser = database_User.GetUser(User.CurrentUser);
                        TempUser.Parameters.Add(TempParametres);
                        database_User.SQConnection.UpdateWithChildren(TempUser);

                        //Getting parameters of currrent user from DB.
                        ListForUserParameters.Add(new tablerow_Parameters(TempParametres.EntryDate.ToShortDateString(), TempParametres.Weight, TempParametres.Height, TempParametres.Index));

                        //Setting the parameters to the list.
                        helpclass_ListAdapter AdapterForUserParameters = new helpclass_ListAdapter(Plugin.CurrentActivity.CrossCurrentActivity.Current.Activity, ListForUserParameters);
                        ListForParameters.Adapter = AdapterForUserParameters;
                    }
                }

                //If the user is not choosed.
                else
                {
                    Toast.MakeText(Application.Context, Resource.String.ErrorMessage_Unchoosed, ToastLength.Long).Show();
                }
            }));

            //Action on pressing negative button.
            Object.SetNegativeButton(Resource.String.Cancel, new EventHandler <DialogClickEventArgs>(delegate(object Sender, DialogClickEventArgs e1) {}));

            //Showing the new form for entering the paatametres.
            Object.Show();
        }