I have two List <>.
List<Musei> ListMusei;
List<Regioni> reg;
the object "Musei" has the property "Paese", while the object "Regioni" has the property "NomeProvincia".
The List "reg" is inserted in a ListView, and when pressed on an item, this method is invoked:
private void Listviewcitt_ItemClick(object sender, ItemClickEventArgs e)
{
var result = ((Regioni)e.ClickedItem).NomeProvincia.ToString();
var filtro = ListMusei.Where(x => x.Paese.Equals(result));
try
{
Frame.Navigate(typeof(PageAroundMe), filtro);
}
catch(Exception)
{
}
}
application where I always closes. I thought there was some problem in the "AroundMe", and then paste the code here:
In Page AroundMe I do this:
List<Musei> ListMusei;
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
ListMusei = (List<Musei>) e.Parameter;
List<Pushpin> push = new List<Pushpin>();
foreach (Musei SingoloMuseo in ListMusei)
{
Pushpin Pushpin pushpin1 = new ();
GeoPoint posizioneP;
try
{
MapLocationFinderResult result = await MapLocationFinder.FindLocationsAsync (SingoloMuseo.Indirizzo, null);
posizioneP result.Locations.FirstOrDefault = ().Point;
pushpin1.Name = SingoloMuseo.NomeMuseo;
pushpin1.Location = posizioneP;
push.Add (pushpin1);
}
catch (Exception)
{
continue;
}
}
Where is the problem? I can not even figure out where I will close
You can pass the parameter like
Frame.Navigate(typeof(PageAroundMe), filtro.ToList());
The invalid cast exception occurs because you are trying to cast IEnumerable type to List.
Related
I am trying to pass a 2d string array as a parameter to a click event (searchButton_Click) which is generated within a click event so I can perform a search function. However, I get the error No overload for 'searchButton_Click' matches delegate 'RoutedEventHandler'.
I have tried several solutions as seen on stackoverflow and other sources but none has worked.
I'm new to C# programming, any help will be appreciated.
private string[,] LongRunningTask()
{
workSheetName = getWorkSheetName();
var sourceFile = OpenExcelFile(filePath);
var sourceWorkSheet = GetWorkSheet(sourceFile.Item1, sourceFile.Item2, workSheetName); //instantiating the object.
var doc_Max = GetDocRow_Col(sourceWorkSheet.Item1);
var maxRow_Col = GetMaxRow_Col(sourceWorkSheet.Item1, doc_Max.Item1, doc_Max.Item2);
int maxRowCount = maxRow_Col.Item1;
int maxColCount = maxRow_Col.Item2;
WriteLine("Last column with content is Row {0} ", maxRowCount);
WriteLine("Last column with content is Column {0} ", maxColCount);
var getItemsResult = getItems(sourceWorkSheet.Item1, maxRow_Col);
string[,] itemsArr = getItemsResult;
Bindng2DArrayToListview2(listview, itemsArr, maxColCount);
//enableItems();
GarbageCollector(sourceWorkSheet.Item1, sourceWorkSheet.Item2, sourceWorkSheet.Item3, sourceWorkSheet.Item4);
//searchButton.Click += (sender2, e2) => { searchButton_Click(sender2, e2, itemsArr); };
return itemsArr;
}
private async void StartTask()
{
this.progressLabel.Content = "Getting Sheets..";
try
{
await Task.Run(() => LongRunningTask());
}
catch(Exception e)
{
MessageBox.Show(e.ToString());
}
this.progressLabel.Content = "Done";
}
You could put the result of LongRunningTask into a field on the class (which I assume is the Window itself), then just access that field from searchButton_Click.
For example...
public partial class TheWindow : Window
{
private string[,] LongRunningTask()
{
// Your LongRunningTask implementation.
}
private async Task StartTask()
{
progressLabel.Content = "Getting Sheets...";
try
{
_itemsArr = await Task.Run(() => LongRunningTask());
}
catch (Exception e)
{
MessageBox.Show(e.Message);
}
progressLabel.Content = "Done!";
}
private void searchButton_Click(object sender, RoutedEventArgs e)
{
if (_itemsArr == null)
{
// The field is null for some reason. You'll have to decide what to do in this case, but
// naturally you can't use it if it's null.
return;
}
// Do the search using the field _itemsArr.
}
private string[,] _itemsArr = null;
}
Help. I try to keep track of changes in address book. but the method
NSError err;
ABAddressBook iOSAddressBook = ABAddressBook.Create(out err);
iOSAddressBook.ExternalChange += (object sender, ExternalChangeEventArgs e) =>
{
Console.WriteLine("qorkkkk");
};
does not work.
/*First, Make change in viewDidLoad Method from where you want to change addressbook Record.*/
- (void)viewDidLoad {
ABAddressBookRef addressBook = ABAddressBookCreateWithOptions(nil, nil);
ABAddressBookRegisterExternalChangeCallback(addressBook, addressBookChanged, (__bridge void *)(self));
}
//Then,
/*------- method will call when contact updated ------*/
void addressBookChanged(ABAddressBookRef addressBook, CFDictionaryRef info, void *context)
{
#try {
[YourVewControllerObj updateRecord];
// YourViewController *viewController = (__bridge YourViewController*)context;
// [viewController updateRecord];
}
#catch (NSException *exception) {
NSLog(#"%#",exception.description);
}
}
/*------- Method call if make any change in conatct ------*/
+(void)updateRecord
{
NSMutableDictionary *dictPerson= [NSMutableDictionary dictionary];
CFErrorRef error = NULL;
ABAddressBookRef addressBook =ABAddressBookCreateWithOptions(NULL, &error) ;
ABRecordID record = ABRecordGetRecordID(ABRecordRef);
ABRecordRef contactPerson = ABAddressBookGetPersonWithRecordID(addressBook, record);
/*---Here you get your updated Record Refence----*/
//Do your other stuff here
}
Im very new to programing and new to stripe. i am currently trying to create a basic page where i can just create the customers. Im currently using the stripe.net dll and am having a hard time getting this page to work correctly. Here is what i have. I get no errors and no records get created.
Using Stripe;
private StripeCustomer GetCustomer()
{
var mycust = new StripeCustomerCreateOptions();
mycust.Email = "thisisit#overhere.com";
mycust.Description = "One Time";
mycust.CardName = "Full Name";
var customerservice = new StripeCustomerService(System.Web.Configuration.WebConfigurationManager.AppSettings["StripeApiKey"]);
return customerservice.Create(mycust);
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
StripeCustomer current = GetCustomer();
var mycharge = new StripeChargeCreateOptions();
string key = System.Web.Configuration.WebConfigurationManager.AppSettings["StripeApiKey"];
Response.Redirect("/services/donate/thanks.aspx");
}
catch (StripeException ex)
{
//lblerror.Text = (ex.Message);
}
}
Also a little help (as i am lost an nothing i try works) as to how i would go about pulling a list of the current customs i have and display them would be great.
I'm guessing you're using this: https://github.com/jaymedavis/stripe.net#list-all-customers
In your GetCustomer method you are creating a customer, instead, you want to do something like the following:
private IEnumerable<StripeCustomer> GetCustomers()
{
var customerservice = new StripeCustomerService(System.Web.Configuration.WebConfigurationManager.AppSettings["StripeApiKey"]);
return customerservice.List();
}
protected void Button1_Click(object sender, EventArgs e)
{
try
{
StripeCustomer list = GetCustomers();
//show this list somewhere
}
catch (StripeException ex)
{
//lblerror.Text = (ex.Message);
}
}
Makre sure StripeApiKey exists in your configuration file.
In a Windows Runtime app, I load data like this:
private async void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
var userId = e.NavigationParameter as string;
List<User> followers = GetFollowers(userId);
this.DefaultViewModel["Followers"] = followers;
}
then user can select an item from ListView:
private void ContentListView_ItemClick(object sender, ItemClickEventArgs e)
{
var selectedItem = e.ClickedItem as User;
if (!Frame.Navigate(typeof(FollowersPage), selectedItem.UserId))
{
throw new Exception(this.resourceLoader.GetString("NavigationFailedExceptionMessage"));
}
}
So it navigates forward to the same page, but shows new followers.
The problem is that when it navigates back, it loads data again and shows from the beginning of the list rather than showing the last item selected.
So how to save a List of data in NavigationHelper_SaveState and how to load it again in NavigationHelper_LoadState with last position in the list? thanks.
Here's a basic semi-tested example you can start from. You'll need to modify it to fit your exact circumstances. Some of it is adapted from here.
void NavigationHelper_SaveState(object sender, SaveStateEventArgs e)
{
var isp = (ItemsStackPanel)listview.ItemsPanelRoot;
int firstVisibleItem = isp.FirstVisibleIndex;
e.PageState["FirstVisibleItemIndex"] = firstVisibleItem;
// This must be serializable according to the SuspensionManager
e.PageState["Followers"] = this.DefaultViewModel["Followers"];
}
void NavigationHelper_LoadState(object sender, LoadStateEventArgs e)
{
// Do we have saved state to restore?
if (e.PageState != null)
{
// Restore list view items
this.DefaultViewModel["Followers"] = (WhateverType)e.PageState["Followers"];
// Restore scroll offset
var index = (int)e.PageState["FirstVisibleItemIndex"];
var container = listview.ContainerFromIndex(index);
listview.ScrollIntoView(container);
}
else
{
// Load data for the first time
var userId = e.NavigationParameter as string;
List<User> followers = GetFollowers(userId);
this.DefaultViewModel["Followers"] = followers;
}
}
I have a LongListSelector that is populated with List which contains objects from SQLite database:
protected override async void OnNavigatedTo(NavigationEventArgs e)
{
SQLiteAsyncConnection conn = new SQLiteAsyncConnection(DB_PATH);
var query = conn.Table<Prasanja>().Where(x => x.id == 3);
var result = await query.ToListAsync();
foreach (var item in result)
{
var query1 = conn.Table<Odgovori>()
.Where(y => y.Prasanja_id == item.id);
txtPrasanje.Text = item.Tekst;
var resultOdgovori = await query1.ToListAsync();
foreach (var itemOdgovor in resultOdgovori)
{
Lista.Add(itemOdgovor.Odgovor.ToString());
lstOdgovori.ItemsSource = Lista;
}
}
What I want is when one of the LongListSelector items is tapped that I get the specific object tapped, and have the ability to use that object properties.Here is my code:
private void lstOdgovori_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
LongListSelector selector = sender as LongListSelector;
if (selector == null)
return;
Odgovori odg = selector.SelectedItem as Odgovori;
if (odg == null)
return;
if(odg.Tocno==null)
MessageBox.Show("Try again");
else MessageBox.Show("True!!!");
}
The problem here is that my object odg from the class Odgovori returns null after executing this code. How can I fix this?
You are adding a string to Lista that is why your casting is not working. If you have overridden your ToString() method in your Odgovori class I believe that the LongListSelector will call that method if you just add the Odgovori object to Lista