I want to get the data from the firebase and binding into the picker but it did not display anything.
xaml
<Picker Title="Select Category" ItemsSource="{Binding IncomeList}" ItemDisplayBinding="{Binding Name}"
Viewmodel
public class AddIncomeViewModel{
public List<Category> IncomeList { get; set; }
private FirebaseHelper services;
public AddIncomeViewModel{
service = new FirebaseHelper();
IncomeList = new List<Category>();
GetIncomeList();
}
public async void GetIncomeList()
{
try
{
List<Category> income = await services.GetIncome();
foreach (Category incomes in income)
{
IncomeList.Add(new Category
{
Name = incomes.Name,
CategoryType = incomes.CategoryType
});
}
}
catch (Exception ex)
{
Debug.WriteLine(ex);
}
}
}
It did not have any error but display nothing.If I add this line of code it will work fine.
IncomeList.Add(new Category
{
Name = "Salary",
CategoryType = "Income"
});
Can I know why this happen?
Related
My problem is idk how to reflect in a label depending of input value in a entry field by a customer.
To make the things clear, let's start in our database.
Our database
Few information about our realtime database.
In our DELIVERY TABLE, we have 3 types of delivery(standard, reservation and express). In express, by the word itself, it's a rush delivery and we will require a DELIVERY FEE from the customer.
Another table is PRODUCT. We have 2 product for now, MINERAL(PROD1) AND SPARKLING(PROD2). The price of PROD1 is 35 ana PROD2 is 40.
What I've try right now is I put an SelectedIndexChanged in my picker delivery type and picker product type.
//This is my deliverytype event
private async void Picker_DeliveryType_SelectedIndexChanged(object sender, EventArgs e)
{
DELIVERY deliverySave = Picker_DeliveryType.SelectedItem as DELIVERY;
var selectedDeliveryItem = deliverySave.deliveryType;
var note = deliverySave.deliveryFee;
if(selectedDeliveryItem == "Express")
{
await DisplayAlert("Note", "Estimated Delivery: 2 hours from now", "OK");
labelDeliveryFee.Text = "Delivery Fee:" + note;
entryfieldReservationDate.IsEnabled = false;
}
else if(selectedDeliveryItem == "Standard")
{
await DisplayAlert("Note", "Within the day", "OK");
entryfieldReservationDate.IsEnabled = true;
}
else
{
await DisplayAlert("Note", "Enter Reservation Date", "OK");
entryfieldReservationDate.IsEnabled = true;
}
}
//This is my product type event
private void Picker_ProductType_SelectedIndexChanged(object sender, EventArgs e)
{
PRODUCT prod = Picker_ProductType.SelectedItem as PRODUCT;
var selectedProductItem = prod.productType;
var productPricing = prod.productPrice;
if (selectedProductItem == "Mineral")
{
labelProductPrice.Text = Convert.ToString(productPricing);
}
else
{
labelProductPrice.Text = Convert.ToString(productPricing);
}
}
AND my expected output is I want the 2 SelectedIndexChanged will put inside my order button.
//this is my order button click functio now
async private void Button_Clicked(object sender, EventArgs e)
{
if (selectedDeliveryType == "Standard")
{
if (selectedProductItem == "Mineral")
{
//some code here
waterOrder.orderTotalAmount = totalprice;
}
else
{
//some code here
waterOrder.orderTotalAmount = totalprice;
}
}
else if (selectedDeliveryType == "Reservation")
{
if (selectedProductItem == "Mineral")
{
//some code here
waterOrder.orderTotalAmount = totalprice;
}
else
{
//some code here
waterOrder.orderTotalAmount = totalprice;
}
}
else
{
int deliveryfee = deliverySave.deliveryFee;
if (selectedProductItem == "Mineral")
{
//some code here
waterOrder.orderTotalAmount = totalprice;
}
else
{
//some code here
waterOrder.orderTotalAmount = totalprice;
}
}
//some code here
var SaveData = await waterorderRepos.Save(waterOrder);
var SaveDataToCustomerNotification = await waterorderRepos.SaveCustomerNotification(customerNotification);
if (SaveData)
{
await this.DisplayAlert("Order", "Order successfully", "OK");
ClearData();
CloseAllPopup();
return;
}
else
{
await this.DisplayAlert("Order", "We cannot process your order at the moment.", "OK");
}
}
I will show you some visual presentation between my work now and my expected output.
This is the image.
Please help me guys, idk how to it.Also, no MVVM please cause IDK how to do it. Thank you so much.
Based on the complexity of your code, I recommend that you use the MVVM pattern for implementation.
I created a demo and achieved your function.
You can refer to the following code:
1.create a view model MyViewModel.cs
public class MyViewModel: INotifyPropertyChanged
{
public ObservableCollection<Delivery> Deliveries { get; set; }
private Delivery _deliverySelectedItem;
public Delivery DeliverySelectedItem
{
get => _deliverySelectedItem;
set {
SetProperty(ref _deliverySelectedItem, value);
// update the TotalAmount
caculateTotalAmount();
}
}
public ObservableCollection<Product> Products { get; set; }
//add SelectedItem here
private Product _productSelectedItem;
public Product ProductSelectedItem
{
get => _productSelectedItem;
set {
SetProperty(ref _productSelectedItem, value);
// update the TotalAmount
caculateTotalAmount();
}
}
private int _quantity;
public int Quantity
{
get => _quantity;
set
{
SetProperty(ref _quantity, value);
// update the TotalAmount
caculateTotalAmount();
}
}
private int _totalAmount;
public int TotalAmount
{
get => _totalAmount;
set
{
SetProperty(ref _totalAmount, value);
}
}
private void caculateTotalAmount() {
if (String.IsNullOrEmpty(Quantity.ToString() ) || Quantity == 0) {
TotalAmount = 0;
return;
}
if (ProductSelectedItem!=null && DeliverySelectedItem!=null) {
TotalAmount = ProductSelectedItem.productPrice * Quantity + DeliverySelectedItem.deliveryFee;
}
}
public MyViewModel() {
Products = new ObservableCollection<Product>();
Products.Add(new Product { ProductId = 01, productType = "Products", productPrice = 10 });
Products.Add(new Product { ProductId = 02, productType = "02", productPrice = 12 });
Products.Add(new Product { ProductId = 03, productType = "Products", productPrice = 13 });
Products.Add(new Product { ProductId = 04, productType = "Products", productPrice = 15 });
Deliveries = new ObservableCollection<Delivery>();
Deliveries.Add(new Delivery { deliveryFee = 10, deliveryType = "Express" });
Deliveries.Add(new Delivery { deliveryFee = 20, deliveryType = "Standard" });
Deliveries.Add(new Delivery { deliveryFee = 30, deliveryType = "Standard" });
}
bool SetProperty<T>(ref T storage, T value, [CallerMemberName] string propertyName = null)
{
if (Object.Equals(storage, value))
return false;
storage = value;
OnPropertyChanged(propertyName);
return true;
}
protected void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
public event PropertyChangedEventHandler PropertyChanged;
}
2.create class Delivery.cs and Product.cs
public class Delivery
{
public string deliveryType { get; set; }
public int deliveryFee { get; set;}
}
public class Product
{
public int ProductId { get; set; }
public string productType { get; set; }
public int productPrice { get; set; }
}
3.MainPage.xaml
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:pickerapp2023112="clr-namespace:PickerApp2023112"
x:Class="PickerApp2023112.MainPage">
<ContentPage.BindingContext>
<pickerapp2023112:MyViewModel></pickerapp2023112:MyViewModel>
</ContentPage.BindingContext>
<StackLayout>
<Picker x:Name="Picker_DeliveryType" ItemsSource="{Binding Deliveries}" ItemDisplayBinding="{Binding deliveryFee}" SelectedItem="{Binding DeliverySelectedItem}"
Title="Select a delivery type"
TitleColor="Red">
</Picker>
<Picker x:Name="Picker_ProductType" ItemsSource="{Binding Products}" ItemDisplayBinding="{Binding productPrice}" SelectedItem="{Binding ProductSelectedItem}"
Title="Select a product type"
TitleColor="Red">
</Picker>
<StackLayout Orientation="Horizontal">
<Label Text="Please input quantity: " BackgroundColor="CadetBlue"/>
<Entry Placeholder="0" Text="{Binding Quantity}" TextColor="Red" HorizontalOptions="FillAndExpand"></Entry>
</StackLayout>
<Label x:Name="labelDeliveryFee" Text="{Binding DeliverySelectedItem.deliveryFee,StringFormat='The delivery free is {0:F1}'}" HorizontalOptions="StartAndExpand" BackgroundColor="Yellow"></Label>
<Label x:Name="labelProductPrice" Text="{Binding ProductSelectedItem.productPrice,StringFormat='The product price is {0:F2}'}" HorizontalOptions="StartAndExpand" BackgroundColor="Yellow"></Label>
<StackLayout Orientation="Horizontal">
<Label Text="The total amount: " BackgroundColor="CadetBlue"/>
<Entry Placeholder="0" Text="{Binding TotalAmount}" TextColor="Red" HorizontalOptions="FillAndExpand"></Entry>
</StackLayout>
</StackLayout>
</ContentPage>
Note:
1.I add two objects for the SelectedItem property of two Pickers and implement interface INotifyPropertyChanged for this ViewModel, if we change the value of the property, the UI will update automatically. The same is true for other properties.
private Delivery _deliverySelectedItem;
public Delivery DeliverySelectedItem
{
get => _deliverySelectedItem;
set {
SetProperty(ref _deliverySelectedItem, value);
}
}
public ObservableCollection<Product> Products { get; set; }
//add SelectedItem here
private Product _productSelectedItem;
public Product ProductSelectedItem
{
get => _productSelectedItem;
set {
SetProperty(ref _productSelectedItem, value);
}
}
In this condition, we don't need add event SelectedIndexChanged for Picker.
Problem
This is the process:
Select a category from list.
Load Tasks page.
Tasks are loaded depending on the categoryId selected from the previous page. (Navigate back to Category page is possible ✔️)
Select a Task from from list.
Load Task Page.
Task details are loaded on the page. (Navigate back to Tasks page is not possible ❌)
Video
Question
I do not understand why I cannot navigate back a page. How can I fix this?
Code
CategoriesViewModel
public class CategoriesViewModel : BaseViewModel
{
public ObservableCollection<CategoryModel> Categories { get; } = new ObservableCollection<CategoryModel>();
public Command LoadCategoriesCommand { get; }
public Command<CategoryModel> SelectedCategory { get; }
public CategoriesViewModel()
{
Title = "Categories";
LoadCategoriesCommand = new Command(async () => await LoadCategories());
SelectedCategory = new Command<CategoryModel>(OnSelectedCategory);
}
private async Task LoadCategories()
{
IsBusy = true;
try
{
Categories.Clear();
var categories = await DatabaseService.GetCategoriesAsync();
foreach (var category in categories)
{
this.Categories.Add(category);
}
}
catch (Exception)
{
throw;
}
finally
{
IsBusy = false;
}
}
private async void OnSelectedCategory(CategoryModel category)
{
if (category == null)
return;
await Shell.Current.GoToAsync($"{nameof(TasksPage)}?{nameof(TasksViewModel.CategoryId)}={category.CategoryId}");
}
public void OnAppearing()
{
IsBusy = true;
}
}
TasksViewModel
[QueryProperty(nameof(CategoryId), nameof(CategoryId))]
public class TasksViewModel : BaseViewModel
{
public ObservableCollection<TaskModel> Tasks { get; } = new ObservableCollection<TaskModel>();
private int categoryId;
public int CategoryId
{
get { return categoryId; }
set
{
categoryId = value;
}
}
public Command LoadTasksCommand { get; set; }
public Command<TaskModel> SelectedTask { get; set; }
public TasksViewModel()
{
Title = "Tasks";
LoadTasksCommand = new Command(async () => await LoadTasks());
SelectedTask = new Command<TaskModel>(OnSelectedTask);
}
private async Task LoadTasks()
{
IsBusy = true;
try
{
this.Tasks.Clear();
var tasks = await DatabaseService.GetTasksAsync(CategoryId);
foreach (var task in tasks)
{
this.Tasks.Add(task);
}
}
catch (Exception)
{
throw;
}
finally
{
IsBusy = false;
}
}
private async void OnSelectedTask(TaskModel task)
{
if (task == null)
return;
await Shell.Current.GoToAsync($"{nameof(TaskPage)}?{nameof(TaskViewModel.TaskId)}={task.TaskId}");
}
public void OnAppearing()
{
IsBusy = true;
}
}
TaskViewModel
[QueryProperty(nameof(TaskId), nameof(TaskId))]
public class TaskViewModel : BaseViewModel
{
private int taskId;
public int TaskId
{
get { return taskId; }
set
{
taskId = value;
}
}
private string taskTitle;
public string TaskTitle
{
get { return taskTitle; }
set
{
taskTitle = value;
OnPropertyChanged(nameof(TaskTitle));
}
}
private string description;
public string Description
{
get { return description; }
set
{
description = value;
OnPropertyChanged(nameof(Description));
}
}
public Command LoadTaskCommand { get; }
public TaskViewModel()
{
LoadTaskCommand = new Command(async () => await LoadTask());
}
private async Task LoadTask()
{
IsBusy = true;
try
{
var task = await DatabaseService.GetTaskAsync(TaskId);
this.TaskTitle = task.Title;
this.Description = task.Description;
}
catch (Exception)
{
throw;
}
finally
{
IsBusy = false;
}
}
public void OnAppearing()
{
IsBusy = true;
}
}
Update 1
I tried replacing this line of code in TasksViewModel:
await Shell.Current.GoToAsync($"{nameof(TaskPage)}?{nameof(TaskViewModel.TaskId)}={task.TaskId}");
to this:
await Shell.Current.Navigation.PushAsync(new AboutPage());
Also, the same outcome.
Update 2
As per requested comment, here is the TaskPage.xaml
<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:vm="clr-namespace:SomeProject.ViewModels"
x:Class="SomeProject.Views.Task.TaskPage"
Title="{Binding TaskTitle}">
<ContentPage.Content>
<RefreshView x:DataType="vm:TaskViewModel"
Command="{Binding LoadTaskCommand}"
IsRefreshing="{Binding IsBusy, Mode=TwoWay}">
<StackLayout>
<Label Text="{Binding Description}" />
</StackLayout>
</RefreshView>
</ContentPage.Content>
</ContentPage>
and TaskPage.xaml.cs:
public partial class TaskPage : ContentPage
{
TaskViewModel _viewModel;
public TaskPage()
{
InitializeComponent();
BindingContext = _viewModel = new TaskViewModel();
}
protected override void OnAppearing()
{
base.OnAppearing();
_viewModel.OnAppearing();
}
}
Update 3
As per requested comment, here is the routes:
public AppShell()
{
InitializeComponent();
Routing.RegisterRoute(nameof(CategoriesView), typeof(CategoriesView));
Routing.RegisterRoute(nameof(TasksPage), typeof(TasksPage));
Routing.RegisterRoute(nameof(TaskPage), typeof(TaskPage));
}
Check your registers route.
https://learn.microsoft.com/en-us/xamarin/xamarin-forms/app-fundamentals/shell/navigation#register-page-routes
In the Shell subclass constructor, or any other location that runs
before a route is invoked, additional routes can be explicitly
registered for any pages that aren't represented in the Shell visual
hierarchy
I had CategoryPage registered in AppShell.xaml.cs and also AppShell.xaml like so:
<ShellContent Route="CategoryPage" ContentTemplate="{DataTemplate local:CategoryPage}" />
Only can register one route in one or the other.
I am looking for help setting the code behind to pass multiple Labels using the next button. Basically I want to have a label set when the page is opened, press the next button and have a new label replace the current one (without setting new content pages). I a beginner working in Xamarin.Forms and I am not really understanding the data binding process... If anyone has a good reference (other than the Microsoft Website) that would help as well. Pretty sure the code below will not do anything yet... Thanks in advance :)
this is the ContentPage:
<ContentPage.Content>
<StackLayout>
<Label Text="{Binding TitleText}" />
<ScrollView VerticalOptions="FillAndExpand">
<StackLayout>
<Label Text="{Binding EngText}" />
<Label Text="{Binding ItText}" />
</StackLayout>
</ScrollView>
This is what I started for the code behind:
''''''
namespace MVVM2
{
public partial class MainPage : ContentPage
{
List<MainPage> Contacts { get; set; }
int ndx = 0;
public string TitleText { get; set; }
public string EngText { get; set; }
public string ItText { get; set; }
public MainPage()
{
InitializeComponent();
Contacts = new List<MainPage>();
// repeat this for as many contacts as you need
Contacts.Add(new MainPage
{
TitleText = "Title1",
EngText = "EngText1",
ItText = "ItText1"
});
Contacts.Add(new MainPage
{
TitleText = "Title2",
EngText = "EngText2",
ItText = "ItText2"
});
Contacts.Add(new MainPage
{
TitleText = "Title3",
EngText = "EngText3",
ItText = "ItText3"
});
// display the first contact
BindingContext = Contacts[ndx];
}
private void OnNavigateButtonClicked(object sender, EventArgs e)
{
// increment your index
ndx++;
// check that we haven't gone too far
if (ndx < Contacts.Count)
{
BindingContext = Contacts[ndx];
}
}
}
}
if you just want to display different text when the button is clicked, you don't need to navigate to a new page
first, create a List to hold your buttons and a variable to keep track of which one is displayed. These two lines should be in the body of your class but NOT inside any specific method
List<Contact> contacts { get; set; }
int ndx = 0;
then in your constructor setup your data
public MainPage()
{
InitializeComponent();
contacts = new List<Contact>();
// repeat this for as many contacts as you need
contacts.Add(new Contact {
TitleText = "Title1",
EngText = "EngText1",
ItText = "ItText1"});
// display the first contact
BindingContext = contacts[ndx];
}
finally, handle the button click
async void OnNavigateButtonClicked(object sender, EventArgs e)
{
// increment your index
ndx++;
// check that we haven't gone too far
if (ndx < contacts.Count) {
BindingContext = contacts[ndx];
}
}
I can get datatable after scan barcode but it not show when i bind it to sfDatagrid. what am i doing wrong. I think i call vm.TimSPTonKho.Execute(null); in .cs incorrectly
code xaml and .cs
<ContentPage.BindingContext>
<vm:vmBanHang_get_TTSanPham_ScanCode />
</ContentPage.BindingContext>
<StackLayout>
<Grid VerticalOptions="CenterAndExpand"
HorizontalOptions="CenterAndExpand">
<zxing:ZXingScannerView x:Name="scanView"
OnScanResult="scanView_OnScanResult"
IsScanning="True"
WidthRequest="200"
HeightRequest="300"
VerticalOptions="CenterAndExpand"
HorizontalOptions="CenterAndExpand"/>
<zxing:ZXingDefaultOverlay TopText="Align the barcode within the frame"/>
</Grid>
<datagrid:SfDataGrid HorizontalOptions="Center" x:Name="datagrid"
AllowTriStateSorting="True"
ColumnSizer="Star"
ItemsSource="{Binding DataTableCollection}">
</datagrid:SfDataGrid>
</StackLayout>
this my xaml file
private void scanView_OnScanResult(Result result)
{
Device.BeginInvokeOnMainThread(async () =>
{
await DisplayAlert("Scanned result", "The barcode's text is " + result.Text + ". The barcode's format is " + result.BarcodeFormat, "OK");
var vm = new vmBanHang_get_TTSanPham_ScanCode();
vm.MaSanPham = result.Text;
vm.IDCuaHang = 1;
vm.TimSPTonKho.Execute(null);
});
}
my ViewModel.cs
class vmBanHang_get_TTSanPham_ScanCode : INotifyPropertyChanged
{
private ApiServices _apiServices = new ApiServices();
public int IDCuaHang { get; set; }
public string MaSanPham { get; set; }
public vmBanHang_get_TTSanPham_ScanCode()
{
DataTableCollection = _DataTableCollection;
}
public DataTable DataTableCollection
{
get { return _DataTableCollection; }
set
{
_DataTableCollection = value;
OnPropertyChanged();
}
}
public DataTable _DataTableCollection;
public ICommand TimSPTonKho
{
get
{
return new Command(async () =>
{
if (!string.IsNullOrEmpty(MaSanPham))
{
DataTableCollection = await _apiServices.get_TTSanPham_ScanCode(IDCuaHang, MaSanPham, Settings.Accesstoken);
}
});
}
}
public event PropertyChangedEventHandler PropertyChanged;
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
2. My second question, how can i get all values Datagrid send to Datatable ? do i have to implement it in xaml.cs or in viewmodel.
Thanks for helps
I found the solution. bind directly from xaml.cs
datagrid.ItemsSource = await _apiServices.get_TTSanPham_ScanCode(1, result.Text, Settings.Accesstoken);
instead of call Icommand in Viewmodel
public ICommand TimSPTonKho
{
get
{
return new Command(async () =>
{
if (!string.IsNullOrEmpty(MaSanPham))
{
DataTableCollection = await _apiServices.get_TTSanPham_ScanCode(IDCuaHang, MaSanPham, Settings.Accesstoken);
}
});
}
}
I'm using the latest MMVM Light windows 8 binaries and VS 2012 latest updates, so all is good there. I'm new to the MVVM Light framework, so it's an adjustment.
I have a Customers page with a grid that is searched with a textbox and button - the text box is bound and the button uses a command. The data is showing up in the view model just fine. I LINQ over the Customers List and set the Customers list property - all works well. The problem is, the page doesn't refresh. When I go to another page and return to the Customers page, the searched data is displayed.
I suspect the view model is static and needs to re-instantiated.
The follow are the respective code frags:
public partial class ViewModelLocator
{
static ViewModelLocator()
{
ServiceLocator.SetLocatorProvider(() => SimpleIoc.Default);
if (ViewModelBase.IsInDesignModeStatic)
{
SimpleIoc.Default.Register<IDataService, Design.DesignDataService>();
}
else
{
SimpleIoc.Default.Register<IDataService, DataService>();
}
// Services
SimpleIoc.Default.Register<INavigationService, NavigationService>();
SimpleIoc.Default.Register<IMessenger, Messenger>();
// View Models
SimpleIoc.Default.Register<MainViewModel>();
SimpleIoc.Default.Register<CustomersViewModel>();
SimpleIoc.Default.Register<CustomerViewModel>(true);
SimpleIoc.Default.Register<ContactsViewModel>();
}
public MainViewModel Main
{
get
{
return ServiceLocator.Current.GetInstance<MainViewModel>();
}
}
public CustomersViewModel Customers
{
get
{
return ServiceLocator.Current.GetInstance<CustomersViewModel>();
}
}
public CustomerViewModel Customer
{
get
{
return ServiceLocator.Current.GetInstance<CustomerViewModel>();
}
}
public ContactsViewModel Contacts
{
get
{
return ServiceLocator.Current.GetInstance<ContactsViewModel>();
}
}
public static void Cleanup()
{
}
}
}
public class CustomersViewModel : ViewModelBase
{
private readonly IDataService _dataService;
private INavigationService _navigationService;
private IMessenger _messenger;
public RelayCommand<string> RefreshClickCommand { get; set; }
public RelayCommand<string> SearchCustomersCommand { get; set; }
public const string CustomersPropertyName = "Customers";
private ObservableCollection<Customer> _customers = null;
public ObservableCollection<Customer> Customers
{
get
{
return _customers;
}
set
{
if (_customers == value)
{
return;
}
_customers = value;
RaisePropertyChanging(CustomersPropertyName);
}
}
public const string WelcomeTitlePropertyName = "WelcomeTitle";
private string _welcomeTitle = string.Empty;
public string WelcomeTitle
{
get
{
return _welcomeTitle;
}
set
{
if (_welcomeTitle == value)
{
return;
}
_welcomeTitle = value;
RaisePropertyChanged(WelcomeTitlePropertyName);
}
}
public const string CustomerSearchTermPropertyName = "CustomerSearchTerm";
private string _customerSearchTerm = string.Empty;
public string CustomerSearchTerm
{
get
{
return _customerSearchTerm;
}
set
{
if (_customerSearchTerm == value)
{
return;
}
_customerSearchTerm = value;
RaisePropertyChanging(CustomerSearchTermPropertyName);
}
}
public Customer SelectedItem
{
set
{
Customer customer = value;
_messenger.Send<Customer>(customer, "Customer");
_navigationService.Navigate(typeof(CustomerPage));
}
}
public CustomersViewModel(IDataService dataService)
{
_navigationService = SimpleIoc.Default.GetInstance<INavigationService>();
_messenger = SimpleIoc.Default.GetInstance<IMessenger>();
_dataService = dataService;
_dataService.GetData(
(item, error) =>
{
if (error != null)
{
// Report error here
return;
}
WelcomeTitle = item.Title + "Customers";
});
GetCustomers();
InitializeCommands();
}
private void InitializeCommands()
{
RefreshClickCommand = new RelayCommand<string>((item) =>
{
GetCustomers();
});
SearchCustomersCommand = new RelayCommand<string>((item) =>
{
SearchCustomers();
});
}
private void GetCustomers()
{
_customers = _dataService.GetCustomers();
}
private void SearchCustomers()
{
var cust = _dataService.GetCustomers();
List<Customer> customers = (from c in cust
where c.CompanyName.StartsWith(_customerSearchTerm)
orderby c.CompanyName
select c).ToList();
_customers = new ObservableCollection<Customer>(customers);
}
}
<common:LayoutAwarePage x:Class="SalesAccountManager.Views.RelationshipManager.CustomersPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:common="using:SalesAccountManager.Common"
xmlns:ignore="http://www.ignore.com"
xmlns:telerikGrid="using:Telerik.UI.Xaml.Controls.Grid"
xmlns:WinRtBehaviors="using:WinRtBehaviors"
xmlns:Win8nl_Behavior="using:Win8nl.Behaviors"
mc:Ignorable="d ignore"
d:DesignHeight="768"
d:DesignWidth="1366"
DataContext="{Binding Customers, Source={StaticResource Locator}}">
....
<Grid>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Left">
<TextBlock Text="Customers" FontFamily="Segoe UI" FontSize="38"/>
</StackPanel>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Right" Margin="0, 0, 100, 0">
<TextBox Height="20" Width="600" Background="White" Text="{Binding CustomerSearchTerm, Mode=TwoWay}" />
<Button Background="White" Command="{Binding SearchCustomersCommand}">
<Image Source="../../Images/Search.jpg" Height="20" Width="20"></Image>
</Button>
</StackPanel>
</Grid>
Any guidance on this would be appreciated...
Thanks!