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image doesn't change - WPF

I'm trying to change an image on runtime but it's not working.
I have a user control that when you click on imagebtn it's opening a new window with a list of images.
the next step is to take the image selected from the list, close the new window, and put the image on the imagebtn.
the user control still opens in the background.
this is my code.
NewWindow:
private string myData;
public ImagesWindow()
{
InitializeComponent();
InitialImageList();
}
private async void InitialImageList()
{
//add try catch
string get = await HttpRequests.GetRequest(URLImages);
allJsonCategory = JsonConvert.DeserializeObject<List<ImageArray>>(get);
Console.WriteLine(get);
ImageBoxList.ItemsSource = images;
foreach (var item in allJsonCategory)
{
images.Add(item);
}
}
private void ImageBoxList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
selectedImage = (ImageArray)ImageBoxList.SelectedItem;
myData = selectedImage.full_path;
Console.WriteLine("you clicked on: " + selectedImage.name);
ProductsCategory pro = new ProductsCategory();
pro.imagePath = myData;
this.Close();
}
my usercontrol(in mainWindow):
public void setImage(string imagePath)
{
if (!imageURL.Equals(""))
{
Image imageBtn = new Image();
var imgUrl = new Uri(imagePath);
var imageData = new WebClient().DownloadData(imgUrl);
// or you can download it Async won't block your UI
// var imageData = await new WebClient().DownloadDataTaskAsync(imgUrl);
var bitmapImage = new BitmapImage { CacheOption = BitmapCacheOption.OnLoad };
bitmapImage.BeginInit();
bitmapImage.StreamSource = new MemoryStream(imageData);
bitmapImage.EndInit();
imageBtn.Source = bitmapImage;
//this.imageBtn.InvalidateVisual();
}
}
XAML of the image:
where is my mistake?
thank you all :)

WinForms DataGridView does not respond while listing images

I have an application that allows the users to upload the selected images to the DataGridView and perform operations on their. However, when multiple images are selected, the Form freezes until the image information is uploaded to the DataGridView. I have tried BackgroundWorker for this, but it didn't work either. My codes look like this:
private void button1_Click(object sender, EventArgs e)
{
var file = new OpenFileDialog
{
Filter = #"TIFF |*.tiff| TIF|*.tif",
FilterIndex = 1,
Title = #"Select TIFF file(s)...",
Multiselect = true
};
if (file.ShowDialog() == DialogResult.OK)
{
Listing(file.FileNames);
}
}
private void Listing(string[] files)
{
foreach (var file in files)
{
var pic_name = Path.GetFileName(file);
if (file != null)
{
// Image from file
var img = Image.FromFile(file);
// Get sizes of TIFF image
var pic_sizes = img.Width + " x " + img.Height;
// Get size of TIFF image
var pic_size = new FileInfo(file).Length;
//Create the new row first and get the index of the new row
var rowIndex = dataGridView1.Rows.Add();
//Obtain a reference to the newly created DataGridViewRow
var row = dataGridView1.Rows[rowIndex];
//Now this won't fail since the row and columns exist
row.Cells["name"].Value = pic_name;
row.Cells["sizes"].Value = pic_sizes + " pixels";
row.Cells["size"].Value = pic_size + " bytes";
}
}
}
How can I solve this problem?
EDIT: After Alex's comment, I tried like this:
private void button1_Click(object sender, EventArgs e)
{
var file = new OpenFileDialog
{
Filter = #"TIFF |*.tiff| TIF|*.tif",
FilterIndex = 1,
Title = #"Select TIFF file(s)...",
Multiselect = true
};
if (file.ShowDialog() == DialogResult.OK)
{
_ = Test(file.FileNames);
}
}
private async Task Test(string[] s)
{
await Task.Run(() => Listing(s));
}
private void Listing(string[] files)
{
BeginInvoke((MethodInvoker) delegate
{
foreach (var file in files)
{
var pic_name = Path.GetFileName(file);
if (file != null)
{
// Image from file
var img = Image.FromFile(file);
// Get sizes of TIFF image
var pic_sizes = img.Width + " x " + img.Height;
// Get size of TIFF image
var pic_size = new FileInfo(file).Length;
//Create the new row first and get the index of the new row
var rowIndex = dataGridView1.Rows.Add();
//Obtain a reference to the newly created DataGridViewRow
var row = dataGridView1.Rows[rowIndex];
//Now this won't fail since the row and columns exist
row.Cells["name"].Value = pic_name;
row.Cells["sizes"].Value = pic_sizes + " pixels";
row.Cells["size"].Value = pic_size + " bytes";
}
}
});
}
But unfortunately the result is same.

I think the whole problem is in collecting image datas. Because a ready list will not take longer to load if it will not need extra processing. For this reason, I prepared a scenario like below.
private readonly BindingList<Tiff> _tiffs = new BindingList<Tiff>();
private void button1_Click(object sender, EventArgs e)
{
Listing();
}
private void Listing()
{
foreach (var f in _tiffs)
{
if (f != null)
{
var rowIndex = dataGridView1.Rows.Add();
//Obtain a reference to the newly created DataGridViewRow
var row = dataGridView1.Rows[rowIndex];
//Now this won't fail since the row and columns exist
row.Cells["ColName"].Value = f.ColName;
row.Cells["ColSizes"].Value = f.ColSizes + " pixels";
row.Cells["ColSize"].Value = f.ColSize + " bytes";
}
}
}
public static List<string> Files(string dir, string ext = "*.tiff")
{
var DirInfo = new DirectoryInfo(dir);
return DirInfo.EnumerateFiles(ext, SearchOption.TopDirectoryOnly).Select(x => x.FullName).ToList();
}
public void SetSource()
{
// Source folder of images...
var files = Files(#"___SOURCE_DIR___");
var total = files.Count;
var i = 1;
foreach (var file in files)
{
var pic_name = Path.GetFileName(file);
var img = Image.FromFile(file);
// Get sizes of TIFF image
var pic_sizes = img.Width + " x " + img.Height;
// Get size of TIFF image
var pic_size = new FileInfo(file).Length.ToString();
_tiffs.Add(new Tiff(pic_name, pic_sizes, pic_size));
BeginInvoke((MethodInvoker)delegate
{
label1.Text = $#"{i} of {total} is added to the BindingList.";
});
i++;
}
}
private void button2_Click(object sender, EventArgs e)
{
backgroundWorker1.RunWorkerAsync();
}
private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
{
SetSource();
}
private void backgroundWorker1_ProgressChanged(object sender, ProgressChangedEventArgs e)
{
// Set something if you want.
}
private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
// Set something if you want.
}
public class Tiff
{
public Tiff(string name, string sizes, string size)
{
ColName = name;
ColSizes = sizes;
ColSize = size;
}
public string ColName { get; set; }
public string ColSizes { get; set; }
public string ColSize { get; set; }
}
And here is the result:

How to acess pictures Xamarin.Forms,SQLite, C#

i am creating mobile application where user can post adverts with pictures and text. I am using Media.Plugin by James Montemagno. That works very well. Also the user should be able to tap on the picture to review and possibly delete. I am not sure how to access these pictures, i dont know where they are stored so even if i would want to delete them i am not sure how to access each picture. COuld you please help me?
The user is able to take several images and then they are displayed on the main page. I would like the user to be able to review them once again and then if he continues with them to the second page he will upload some other data and on the third page it should all display together. How can i Display pictures on the third page?
public partial class AddingPage : ContentPage
{
AdLogEntry adLogEntry = new AdLogEntry();
//CameraService cameraService = new CameraService();
public byte[] imageAsBytes;
public string pathLabel;
private const int MaxColumns = 3;
private int _currentRow = 0;
private int _currentColumn = 0;
public AddingPage()
{
InitializeComponent();
}
protected override async void OnAppearing()
{
base.OnAppearing();
await MainProgressBar.ProgressTo(0, 250, Easing.Linear); ;
}
private async void NextStep_Clicked(object sender, EventArgs e)
{
await Navigation.PushAsync(new Informations());
}
private async void TakePicture_Clicked(object sender, EventArgs e)
{
await TakePicture();
}
private async Task TakePicture()
{
MediaFile file = null;
await CrossMedia.Current.Initialize();
if (!CrossMedia.Current.IsCameraAvailable || !CrossMedia.Current.IsTakePhotoSupported)
{
await DisplayAlert("Nemáme přístup", "Nelze nalézt kameru", "OK");
return;
}
var imageSource = await DisplayActionSheet("Foto", "Cancel", null, new string[] { "Pořídit novou fotku", "Nahrát foto z galerie" });
var photoName = Guid.NewGuid().ToString() + ".jpg";
switch (imageSource)
{
case "Pořídit novou fotku":
file = await CrossMedia.Current.TakePhotoAsync(new StoreCameraMediaOptions
{
SaveToAlbum = true,
Directory = "Photos",
Name = photoName
});
//Get the public album path
var aPpath = file.AlbumPath;
//Get private path
var path = file.Path;
break;
case "Nahrát foto z galerie":
file = await CrossMedia.Current.PickPhotoAsync();
//Directory.GetFiles( "Photos");
break;
default:
break;
}
if (file == null)
return;
// Photo => Grid
_currentColumn++;
if (_currentColumn > MaxColumns - 0)
{
_currentColumn++;
_currentRow++;
// Add a new row definition by copying the first row.
ImageGridContainer.RowDefinitions.Add(ImageGridContainer.RowDefinitions[0]);
}
var newImage = new Image()
{
Source = ImageSource.FromFile(file.Path),
VerticalOptions = LayoutOptions.FillAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand,
Aspect = Aspect.AspectFill,
Scale = 0
};
ImageGridContainer.Children.Add(newImage, _currentColumn, _currentRow);
await Task.Delay(250);
await newImage.ScaleTo(1, 250, Easing.SpringOut);
}

Getting selected rows of report files from a WPF Datagrid on button click

This is my first question on stackoverflow and I am entirely new to programming in C# so please bear with me. I created an application using WPF in which I displayed a list of files with .rpt extension in a datagrid. The datagrid contains the list of filenames and there is also a checkbox column in the datagrid. These files are populated in the grid dynamically from a folder browser when I click on a button. I am stuck on the part of retreiving these files for printing when I click on a second button (print, as I need to call a service to print the selected files).
This is the code snippet that I have tried until now:
public partial class MainWindow : Window
{
public class ReportFile
{
public string Path { get; set; }
public string FileName { get; set; }
}
private void Button_Click(object sender, RoutedEventArgs e)
{
string inputPath = AppDomain.CurrentDomain.BaseDirectory;
System.Windows.Forms.FolderBrowserDialog fldDlg = new System.Windows.Forms.FolderBrowserDialog();
fldDlg.SelectedPath = AppDomain.CurrentDomain.BaseDirectory;
DialogResult result = fldDlg.ShowDialog();
foreach (string str in Directory.GetFiles(fldDlg.SelectedPath))
{
ReportFile reportFile = new ReportFile();
reportFile.Path = str;
reportFile.FileName = System.IO.Path.GetFileName(str);
dataGrid1.Items.Add(reportFile);
}
}
private void button_Click_1(object sender, RoutedEventArgs e)
{
foreach (ReportFile drv in dataGrid1.SelectedItems.OfType<ReportFile>())
{
if (drv != null)
{
DataRow row = drv.Row;
Title = row.ItemArray[3].ToString();
System.Windows.MessageBox.Show(Title.ToString());
}
}
var TransactionFactory = new TransactionFactory();
var Transaction = TransactionFactory.NewTransactionString();
var EnvironmentValue = (string)cmbEnvironment.SelectedValue;
var CirieEngineServiceClientFactory = new CirieEngineServiceClientFactory(EnvironmentValue);
var CirieEngineServiceClient = CirieEngineServiceClientFactory.NewCirieEngineServiceClient();
var Form = new Cirie.Form()
{
Path = string.Empty,
Title = string.Empty
};
var PackageID = Convert.ToInt16(txtPackageID.SelectedText);
var Generation = Convert.ToInt16(txtGeneration.SelectedText);
var formList = new List<Cirie.Form>();
var stream = CirieEngineServiceClient.PrintFormCollection
(Transaction,
new Collection<Cirie.Form>(formList),
PackageID,
Generation
);
}
}
But I am not sure if it is correct since there is an exception being thrown: Unable to cast object of type 'ReportFile' to type 'System.Data.DataRowView'
I would really appreciate help on this one please!

You could use the OfType method to cast the SelectedItems to ReportFile objects and then access any properties of the ReportFile class:
foreach (ReportFile drv in dataGrid1.SelectedItems.OfType<ReportFile>())
{
//...
}

White tests - folder browser dialog

I have problem with getting of FolderBrowserDialog in white. I think that it should be assigned as a modal window but it isn't.
FolderBrowserDialog in DialogService.cs:
public FolderBrowserResult ShowFolderbrowserDialog(string storageFolder)
{
var dialog = new FolderBrowserDialog
{
Description = storageFolder
};
var result = new FolderBrowserResult
{
Result = dialog.ShowDialog() != DialogResult.OK,
Path = dialog.SelectedPath
};
return result;
}
Method called after click on browse button:
private void OnBrowseForTargetFolder(object sender, RoutedEventArgs e)
{
var result = dialogService.ShowFolderbrowserDialog(Properties.Resources.StorageFolder);
if (result.Result) return;
Project.PathToStorage = result.Path;
completePath = string.Format("{0}\\{1}", result.Path, Guid.NewGuid());
Directory.CreateDirectory(completePath);
}
Test:
public class LoggerTests
{
private Application application;
private MainWindowPage mainWindowPage;
[TestInitialize]
public void TestInitialize()
{
application = Application.Launch(#"PML.exe");
StartBlankApplication();
}
[TestMethod]
public void StartExistingProject()
{
mainWindowPage.StartExistingProjectButton.Click();
var modalWindows = new List<Window>();
Retry.For(() =>
{
modalWindows = mainWindowPage.applicationWindow.ModalWindows();
}, TimeSpan.FromSeconds(5));
var mod = modalWindows;
}
private MainWindowPage StartBlankApplication()
{
var appWindow = application.GetWindow("PML");
mainWindowPage = new MainWindowPage(appWindow);
return mainWindowPage;
}
private NewProjectConfigurationPage ConfigureBlankProject()
{
Window secondAppWindow = null;
Retry.For(() =>
{
secondAppWindow = application.GetWindow("PML");
}, TimeSpan.FromSeconds(5));
var newProjectConfiguration = new NewProjectConfigurationPage(secondAppWindow);
newProjectConfiguration.VesselName.Text = "Test";
newProjectConfiguration.BrowseButton.Click();
return newProjectConfiguration;
}
}
In StartExistingProject method is problem that variable mod is empty. And no FolderBrowserDialog is opened. But when I run app normally everything runs OK.

Solved - There must be setted owner to modal dialog. So
var wrapper = new WindowWrapper(this);
dialog.ShowDialog(wrapper)
solved my problem.