How to register and start a new IBackgroundTask from a IBackgroundTask? - windowsiot

I have an IBackgroundTask that needs to spin up other backgroundtasks.
<Extension Category="windows.backgroundTasks" EntryPoint="IoT.TestDrive.StartupTask">
<BackgroundTasks>
<iot:Task Type="startup" />
</BackgroundTasks>
</Extension>
This code works:
public sealed class StartupTask : IBackgroundTask
{
public void Run(IBackgroundTaskInstance taskInstance)
{
var def = taskInstance.GetDeferral();
try
{
TimeTrigger trigger = new TimeTrigger(15, false);
BackgroundTaskBuilder builder = new BackgroundTaskBuilder();
builder.TaskEntryPoint = typeof(SubTask).FullName;
builder.SetTrigger(trigger);
BackgroundTaskRegistration task = builder.Register();
}
catch (Exception ex) {
def.Complete();
}
}
}
But it does not trigger immediate, and that's what I want.
Any suggestions here?

Related

hotchocolate 11 : how to replace ExceptionMiddleware by my own middleware?

Is it possible to replace the "official" ExceptionMiddleware HotChocolate classe by my own middleware classe?
I plan to "complete" the catch by including AgregationException .Net exception and create IError[] array by looping AgregationException.InnerExceptions property (see below the original ExceptionMiddleware).
I would like to replace it by my own implementation.
Is it possible ? How can I do this ?
Thanks.
Kind Regards
internal sealed class ExceptionMiddleware
{
private readonly RequestDelegate _next;
private readonly IErrorHandler _errorHandler;
public ExceptionMiddleware(RequestDelegate next, IErrorHandler errorHandler)
{
_next = next ?? throw new ArgumentNullException(nameof(next));
_errorHandler = errorHandler ?? throw new ArgumentNullException(nameof(errorHandler));
}
public async ValueTask InvokeAsync(IRequestContext context)
{
try
{
await _next(context).ConfigureAwait(false);
}
catch (GraphQLException ex)
{
context.Exception = ex;
context.Result = QueryResultBuilder.CreateError(_errorHandler.Handle(ex.Errors));
}
catch (Exception ex)
{
context.Exception = ex;
IError error = _errorHandler.CreateUnexpectedError(ex).Build();
context.Result = QueryResultBuilder.CreateError(_errorHandler.Handle(error));
}
}
}

How to call wpf function via JS when visiting https link

I need to execute a function defined in wpf project, which is called from JS in a https web page.
The demo project of all codes is here: https://github.com/tomxue/WebViewIssueInWpf
JS part:
The web page link is https://cmsdev.lenovo.com.cn/musichtml/leHome/weather/index.html?date=&city=&mark=0&speakerId=&reply=
And it contains below line:
<script src="js/index.js" type="text/javascript" charset="utf-8"></script>
And js/index.js contains below code:
setTitle(dataObject.city + weekDay(dataObject.date) +"天气" )
setTitle() is defined below: uses method of window.external.notify()
function setTitle(_str){
try{
wtjs.setTitle(_str)
}catch(e){
console.log(_str)
window.external.notify(_str);
}
}
The function window.external.notify() will call wpf function via ScriptNotify().
WPF part:
For the WebView inside of the wpf project
this.wv.IsScriptNotifyAllowed = true;
this.wv.ScriptNotify += Wv_ScriptNotify;
And
private void Wv_ScriptNotify(object sender, Microsoft.Toolkit.Win32.UI.Controls.Interop.WinRT.WebViewControlScriptNotifyEventArgs e)
{
textBlock.Text = e.Value;
}
Problems:
(1)
The problem here is if the web page uses https://, then the above function Wv_ScriptNotify() in wpf will not be fired. But if the web page link uses http://, then the above function Wv_ScriptNotify() in wpf can be fired.
Why and how to solve it?
Update:
2020-3-2 17:25:55, tested just now, https works. I do not know what causes https does not work previously
(2)
JS in the web page uses a object wtjs (defined by ourselves and work well with an UWP project using JSBridge).
And I want to use a similiar method to UWP, using a bridge so that I can add multiple funtions/interfaces for JS to call. The disadvantage of ScriptNotify() is that only one interface is usable.
To achieve it, I make below code, which is commented out now.
wv.RegisterName("wtjs", new myBridge());
And more functions are defined as below
public class myBridge
{
public void SetTitle(string title)
{
Debug.WriteLine("SetTitle is executing...title = {0}", title);
}
public void PlayTTS(string tts)
{
Debug.WriteLine("PlayTTS is executing...tts = {0}", tts);
}
}
While in JS side, corresponding functions will be called.
wtjs.playTTS(tts)
wtjs.setTitle(_str)
But in fact wpf side did not work, while the UWP project using JSBridge works with the web link(so web page and JS script are workable). How to achieve it?
(3)
The above two problems are solved by DK Dhilip's answer already.
But a new problem is found. Please check my GitHub code, update it to latest commit.
https://github.com/tomxue/WebViewIssueInWpf
I put a TextBlock onto WebView and expect to see the text floating on the web content. But in fact, the text is covered by the WebView. Why and how to solve it?
Thanks!

For Problem (1, 2)
HTTPS link worked fine for me, maybe the page is too slow to load?
According to Microsoft (source), only ScriptNotify is supported in WebView:
Can I inject native objects into my WebViewControl content?
No.
Neither the WebBrower (Internet Explorer) ObjectForScripting property
nor the WebView (UWP) AddWebAllowedObject method are supported in
WebViewControl. As a workaround, you can use window.external.notify/
ScriptNotify and JavaScript execution to communicate between the
layers, for example:
https://github.com/rjmurillo/WebView_AddAllowedWebObjectWorkaround
But the above suggested workaround solution seems to work differently to your expectation, so I just implement my own solution to emulate the JSBridge convention you have expected.
My custom solution is not battle-tested, it might break in some edge cases but it seems to work fine in few simple tests.
What's supported:
Multiple bridge objects
JS to C# method call
JS to C# get/set property
C# Usage:
// Add
webView.AddWebAllowedObject("wtjs", new MyBridge(this));
webView.AddWebAllowedObject("myBridge", new MyOtherBridge());
// Remove
webView.RemoveWebAllowedObject("wtjs");
JS Usage:
// Call C# object method (no return value)
wtjs.hello('hello', 'world', 666);
myBridge.saySomething('天猫精灵，叫爸爸！');
// Call C# object method (return value)
wtjs.add(10, 20).then(function (result) { console.log(result); });
// Get C# object property
wtjs.backgroundColor.then(function (color) { console.log(color); });
// Set C# object property
wtjs.niubility = true;
Code
WebViewExtensions.cs
using Microsoft.Toolkit.Win32.UI.Controls.Interop.WinRT;
using Microsoft.Toolkit.Wpf.UI.Controls;
using Newtonsoft.Json;
using System;
using System.Collections.Concurrent;
using System.Linq;
using System.Numerics;
using System.Reflection;
using System.Text;
namespace WpfApp3
{
// Source: https://github.com/dotnet/orleans/issues/1269#issuecomment-171233788
public static class JsonHelper
{
private static readonly Type[] _specialNumericTypes = { typeof(ulong), typeof(uint), typeof(ushort), typeof(sbyte) };
public static object ConvertWeaklyTypedValue(object value, Type targetType)
{
if (targetType == null)
throw new ArgumentNullException(nameof(targetType));
if (value == null)
return null;
if (targetType.IsInstanceOfType(value))
return value;
var paramType = Nullable.GetUnderlyingType(targetType) ?? targetType;
if (paramType.IsEnum)
{
if (value is string)
return Enum.Parse(paramType, (string)value);
else
return Enum.ToObject(paramType, value);
}
if (paramType == typeof(Guid))
{
return Guid.Parse((string)value);
}
if (_specialNumericTypes.Contains(paramType))
{
if (value is BigInteger)
return (ulong)(BigInteger)value;
else
return Convert.ChangeType(value, paramType);
}
if (value is long || value is double)
{
return Convert.ChangeType(value, paramType);
}
return value;
}
}
public enum WebViewInteropType
{
Notify = 0,
InvokeMethod = 1,
InvokeMethodWithReturn = 2,
GetProperty = 3,
SetProperty = 4
}
public class WebAllowedObject
{
public WebAllowedObject(WebView webview, string name)
{
WebView = webview;
Name = name;
}
public WebView WebView { get; private set; }
public string Name { get; private set; }
public ConcurrentDictionary<(string, WebViewInteropType), object> FeaturesMap { get; } = new ConcurrentDictionary<(string, WebViewInteropType), object>();
public EventHandler<WebViewControlNavigationCompletedEventArgs> NavigationCompletedHandler { get; set; }
public EventHandler<WebViewControlScriptNotifyEventArgs> ScriptNotifyHandler { get; set; }
}
public static class WebViewExtensions
{
public static bool IsNotification(this WebViewControlScriptNotifyEventArgs e)
{
try
{
var message = JsonConvert.DeserializeObject<dynamic>(e.Value);
if (message["___magic___"] != null)
{
return false;
}
}
catch (Exception) { }
return true;
}
public static void AddWebAllowedObject(this WebView webview, string name, object targetObject)
{
if (string.IsNullOrWhiteSpace(name))
throw new ArgumentNullException(nameof(name));
if (targetObject == null)
throw new ArgumentNullException(nameof(targetObject));
if (webview.Tag == null)
{
webview.Tag = new ConcurrentDictionary<string, WebAllowedObject>();
}
else if (!(webview.Tag is ConcurrentDictionary<string, WebAllowedObject>))
{
throw new InvalidOperationException("WebView.Tag property is already being used for other purpose.");
}
var webAllowedObjectsMap = webview.Tag as ConcurrentDictionary<string, WebAllowedObject>;
var webAllowedObject = new WebAllowedObject(webview, name);
if (webAllowedObjectsMap.TryAdd(name, webAllowedObject))
{
var objectType = targetObject.GetType();
var methods = objectType.GetMethods();
var properties = objectType.GetProperties();
var jsStringBuilder = new StringBuilder();
jsStringBuilder.Append("(function () {");
jsStringBuilder.Append("window['");
jsStringBuilder.Append(name);
jsStringBuilder.Append("'] = {");
jsStringBuilder.Append("__callback: {},");
jsStringBuilder.Append("__newUuid: function () { return ([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g, function (c) { return (c ^ crypto.getRandomValues(new Uint8Array(1))[0] & 15 >> c / 4).toString(16); }); },");
foreach (var method in methods)
{
if (!method.IsSpecialName)
{
if (method.ReturnType == typeof(void))
{
webAllowedObject.FeaturesMap.TryAdd((method.Name, WebViewInteropType.InvokeMethod), method);
}
else
{
webAllowedObject.FeaturesMap.TryAdd((method.Name, WebViewInteropType.InvokeMethodWithReturn), method);
}
var parameters = method.GetParameters();
var parametersInString = string.Join(",", parameters.Select(x => x.Position).Select(x => "$$" + x.ToString()));
jsStringBuilder.Append(method.Name);
jsStringBuilder.Append(": function (");
jsStringBuilder.Append(parametersInString);
jsStringBuilder.Append(") {");
if (method.ReturnType != typeof(void))
{
jsStringBuilder.Append("var callbackId = window['" + name + "'].__newUuid();");
}
jsStringBuilder.Append("window.external.notify(JSON.stringify({");
jsStringBuilder.Append("source: '");
jsStringBuilder.Append(name);
jsStringBuilder.Append("',");
jsStringBuilder.Append("target: '");
jsStringBuilder.Append(method.Name);
jsStringBuilder.Append("',");
jsStringBuilder.Append("parameters: [");
jsStringBuilder.Append(parametersInString);
jsStringBuilder.Append("]");
if (method.ReturnType != typeof(void))
{
jsStringBuilder.Append(",");
jsStringBuilder.Append("callbackId: callbackId");
}
jsStringBuilder.Append("}), ");
jsStringBuilder.Append((method.ReturnType == typeof(void)) ? (int)WebViewInteropType.InvokeMethod : (int)WebViewInteropType.InvokeMethodWithReturn);
jsStringBuilder.Append(");");
if (method.ReturnType != typeof(void))
{
jsStringBuilder.Append("var promise = new Promise(function (resolve, reject) {");
jsStringBuilder.Append("window['" + name + "'].__callback[callbackId] = { resolve, reject };");
jsStringBuilder.Append("});");
jsStringBuilder.Append("return promise;");
}
jsStringBuilder.Append("},");
}
}
jsStringBuilder.Append("};");
foreach (var property in properties)
{
jsStringBuilder.Append("Object.defineProperty(");
jsStringBuilder.Append("window['");
jsStringBuilder.Append(name);
jsStringBuilder.Append("'], '");
jsStringBuilder.Append(property.Name);
jsStringBuilder.Append("', {");
if (property.CanRead)
{
webAllowedObject.FeaturesMap.TryAdd((property.Name, WebViewInteropType.GetProperty), property);
jsStringBuilder.Append("get: function () {");
jsStringBuilder.Append("var callbackId = window['" + name + "'].__newUuid();");
jsStringBuilder.Append("window.external.notify(JSON.stringify({");
jsStringBuilder.Append("source: '");
jsStringBuilder.Append(name);
jsStringBuilder.Append("',");
jsStringBuilder.Append("target: '");
jsStringBuilder.Append(property.Name);
jsStringBuilder.Append("',");
jsStringBuilder.Append("callbackId: callbackId,");
jsStringBuilder.Append("parameters: []");
jsStringBuilder.Append("}), ");
jsStringBuilder.Append((int)WebViewInteropType.GetProperty);
jsStringBuilder.Append(");");
jsStringBuilder.Append("var promise = new Promise(function (resolve, reject) {");
jsStringBuilder.Append("window['" + name + "'].__callback[callbackId] = { resolve, reject };");
jsStringBuilder.Append("});");
jsStringBuilder.Append("return promise;");
jsStringBuilder.Append("},");
}
if (property.CanWrite)
{
webAllowedObject.FeaturesMap.TryAdd((property.Name, WebViewInteropType.SetProperty), property);
jsStringBuilder.Append("set: function ($$v) {");
jsStringBuilder.Append("window.external.notify(JSON.stringify({");
jsStringBuilder.Append("source: '");
jsStringBuilder.Append(name);
jsStringBuilder.Append("',");
jsStringBuilder.Append("target: '");
jsStringBuilder.Append(property.Name);
jsStringBuilder.Append("',");
jsStringBuilder.Append("parameters: [$$v]");
jsStringBuilder.Append("}), ");
jsStringBuilder.Append((int)WebViewInteropType.SetProperty);
jsStringBuilder.Append(");");
jsStringBuilder.Append("},");
}
jsStringBuilder.Append("});");
}
jsStringBuilder.Append("})();");
var jsString = jsStringBuilder.ToString();
webAllowedObject.NavigationCompletedHandler = (sender, e) =>
{
var isExternalObjectCustomized = webview.InvokeScript("eval", new string[] { "window.external.hasOwnProperty('isCustomized').toString();" }).Equals("true");
if (!isExternalObjectCustomized)
{
webview.InvokeScript("eval", new string[] { #"
(function () {
var originalExternal = window.external;
var customExternal = {
notify: function (message, type = 0) {
if (type === 0) {
originalExternal.notify(message);
} else {
originalExternal.notify(JSON.stringify({
___magic___: true,
type: type,
interop: message
}));
}
},
isCustomized: true
};
window.external = customExternal;
})();" });
}
webview.InvokeScript("eval", new string[] { jsString });
};
webAllowedObject.ScriptNotifyHandler = (sender, e) =>
{
try
{
var message = JsonConvert.DeserializeObject<dynamic>(e.Value);
if (message["___magic___"] != null)
{
var interopType = (WebViewInteropType)message.type;
var interop = JsonConvert.DeserializeObject<dynamic>(message.interop.ToString());
var source = (string)interop.source.ToString();
var target = (string)interop.target.ToString();
var parameters = (object[])interop.parameters.ToObject<object[]>();
if (interopType == WebViewInteropType.InvokeMethod)
{
if (webAllowedObjectsMap.TryGetValue(source, out WebAllowedObject storedWebAllowedObject))
{
if (storedWebAllowedObject.FeaturesMap.TryGetValue((target, interopType), out object methodObject))
{
var method = (MethodInfo)methodObject;
var parameterTypes = method.GetParameters().Select(x => x.ParameterType).ToArray();
var convertedParameters = new object[parameters.Length];
for (var i = 0; i < parameters.Length; i++)
{
convertedParameters[i] = JsonHelper.ConvertWeaklyTypedValue(parameters[i], parameterTypes[i]);
}
method.Invoke(targetObject, convertedParameters);
}
}
}
else if (interopType == WebViewInteropType.InvokeMethodWithReturn)
{
var callbackId = interop.callbackId.ToString();
if (webAllowedObjectsMap.TryGetValue(source, out WebAllowedObject storedWebAllowedObject))
{
if (storedWebAllowedObject.FeaturesMap.TryGetValue((target, interopType), out object methodObject))
{
var method = (MethodInfo)methodObject;
var parameterTypes = method.GetParameters().Select(x => x.ParameterType).ToArray();
var convertedParameters = new object[parameters.Length];
for (var i = 0; i < parameters.Length; i++)
{
convertedParameters[i] = JsonHelper.ConvertWeaklyTypedValue(parameters[i], parameterTypes[i]);
}
var invokeResult = method.Invoke(targetObject, convertedParameters);
webview.InvokeScript("eval", new string[] { string.Format("window['{0}'].__callback['{1}'].resolve({2}); delete window['{0}'].__callback['{1}'];", source, callbackId, JsonConvert.SerializeObject(invokeResult)) });
}
}
}
else if (interopType == WebViewInteropType.GetProperty)
{
var callbackId = interop.callbackId.ToString();
if (webAllowedObjectsMap.TryGetValue(source, out WebAllowedObject storedWebAllowedObject))
{
if (storedWebAllowedObject.FeaturesMap.TryGetValue((target, interopType), out object propertyObject))
{
var property = (PropertyInfo)propertyObject;
var getResult = property.GetValue(targetObject);
webview.InvokeScript("eval", new string[] { string.Format("window['{0}'].__callback['{1}'].resolve({2}); delete window['{0}'].__callback['{1}'];", source, callbackId, JsonConvert.SerializeObject(getResult)) });
}
}
}
else if (interopType == WebViewInteropType.SetProperty)
{
if (webAllowedObjectsMap.TryGetValue(source, out WebAllowedObject storedWebAllowedObject))
{
if (storedWebAllowedObject.FeaturesMap.TryGetValue((target, interopType), out object propertyObject))
{
var property = (PropertyInfo)propertyObject;
property.SetValue(targetObject, JsonHelper.ConvertWeaklyTypedValue(parameters[0], property.PropertyType));
}
}
}
}
}
catch (Exception ex)
{
// Do nothing
}
};
webview.NavigationCompleted += webAllowedObject.NavigationCompletedHandler;
webview.ScriptNotify += webAllowedObject.ScriptNotifyHandler;
}
else
{
throw new InvalidOperationException("Object with the identical name is already exist.");
}
}
public static void RemoveWebAllowedObject(this WebView webview, string name)
{
if (string.IsNullOrWhiteSpace(name))
throw new ArgumentNullException(nameof(name));
var allowedWebObjectsMap = webview.Tag as ConcurrentDictionary<string, WebAllowedObject>;
if (allowedWebObjectsMap != null)
{
if (allowedWebObjectsMap.TryRemove(name, out WebAllowedObject webAllowedObject))
{
webview.NavigationCompleted -= webAllowedObject.NavigationCompletedHandler;
webview.ScriptNotify -= webAllowedObject.ScriptNotifyHandler;
webview.InvokeScript("eval", new string[] { "delete window['" + name + "'];" });
}
}
}
}
}
MainWindow.xaml.cs
using Microsoft.Toolkit.Win32.UI.Controls.Interop.WinRT;
using System;
using System.Diagnostics;
using System.Windows;
namespace WpfApp3
{
public partial class MainWindow : Window
{
public class MyBridge
{
private readonly MainWindow _window;
public MyBridge(MainWindow window)
{
_window = window;
}
public void setTitle(string title)
{
Debug.WriteLine(string.Format("SetTitle is executing...title = {0}", title));
_window.setTitle(title);
}
public void playTTS(string tts)
{
Debug.WriteLine(string.Format("PlayTTS is executing...tts = {0}", tts));
}
}
public MainWindow()
{
this.InitializeComponent();
this.wv.IsScriptNotifyAllowed = true;
this.wv.ScriptNotify += Wv_ScriptNotify;
this.wv.AddWebAllowedObject("wtjs", new MyBridge(this));
this.Loaded += MainPage_Loaded;
}
private void Wv_ScriptNotify(object sender, WebViewControlScriptNotifyEventArgs e)
{
if (e.IsNotification())
{
Debug.WriteLine(e.Value);
}
}
private void setTitle(string str)
{
textBlock.Text = str;
}
private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
this.wv.Source = new Uri("https://cmsdev.lenovo.com.cn/musichtml/leHome/weather/index.html?date=&city=&mark=0&speakerId=&reply=");
}
}
}
Result
Screenshot:
For Problem (3)
According to (1, 2, 3), it is impossible to overlay UI elements on top of WebView/WebBrowser control.
Luckily there is an alternative solution called CefSharp which is based on Chromium web browser and would be good enough for your use case, plus the background animation worked (which doesn't work in original WebView control).
However, there is no perfect solution; WPF design view is unusable with CefSharp (showing Invalid Markup error), but the program will just compile and run. Also, the project can only be built with either x86 or x64 option, AnyCPU will not work.
MainWindow.xaml
<Window
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:cefSharp="clr-namespace:CefSharp.Wpf;assembly=CefSharp.Wpf"
x:Class="WpfApp3.MainWindow"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid x:Name="grid">
<cefSharp:ChromiumWebBrowser x:Name="wv" HorizontalAlignment="Left" Height="405" Margin="50,0,0,0" VerticalAlignment="Top" Width="725" RenderTransformOrigin="-0.45,-0.75" />
<TextBlock x:Name="textBlock" HorizontalAlignment="Left" Margin="30,30,0,0" TextWrapping="Wrap" Text="TextBlock" VerticalAlignment="Top" Height="60" Width="335"/>
</Grid>
</Window>
MainWindow.xaml.cs
using CefSharp;
using System.Diagnostics;
using System.Windows;
namespace WpfApp3
{
public partial class MainWindow : Window
{
public class MyBridge
{
private readonly MainWindow _window;
public MyBridge(MainWindow window)
{
_window = window;
}
public void setTitle(string title)
{
Debug.WriteLine(string.Format("SetTitle is executing...title = {0}", title));
_window.setTitle(title);
}
public void playTTS(string tts)
{
Debug.WriteLine(string.Format("PlayTTS is executing...tts = {0}", tts));
}
}
public MainWindow()
{
this.InitializeComponent();
this.wv.JavascriptObjectRepository.Register("wtjs", new MyBridge(this), true, new BindingOptions() { CamelCaseJavascriptNames = false });
this.wv.FrameLoadStart += Wv_FrameLoadStart;
this.Loaded += MainPage_Loaded;
}
private void Wv_FrameLoadStart(object sender, FrameLoadStartEventArgs e)
{
if (e.Url.StartsWith("https://cmsdev.lenovo.com.cn/musichtml/leHome/weather"))
{
e.Browser.MainFrame.ExecuteJavaScriptAsync("CefSharp.BindObjectAsync('wtjs');");
}
}
private void setTitle(string str)
{
this.Dispatcher.Invoke(() =>
{
textBlock.Text = str;
});
}
private void MainPage_Loaded(object sender, RoutedEventArgs e)
{
this.wv.Address = "https://cmsdev.lenovo.com.cn/musichtml/leHome/weather/index.html?date=&city=&mark=0&speakerId=&reply=";
}
}
}
Screenshot:

WPF C# Cefsharp Ver. 71, each load of user control creates new CefSharp.BrowserSubprocess.exe

Please check the code snippets below, this get loaded everytime i navigate to my view(user control) and it creates new CefSharp.BrowserProcess.exe on each load and renders last visited URL.
Problem with is is that it does not maintain the session storage of the site (URL) And load is incorrect with data is lost.
viewModel (main) code:
private void OnLoad()
{
IsBusy = true;
try
{
if (string.IsNullOrEmpty(TieAddress))
{
TieAddress = _serviceJournalsBaseSettings.GetTieUrl();
}
var cookieManager = Cef.GetGlobalCookieManager();
Cookie cookie = new Cookie
{
Name = BaseSettings.GetTieCookieName(),
Value = BaseSettings.GetTieCookie()
};
cookieManager.SetCookie(BaseSettings.GetTieCookieUrl(), cookie);
}
catch (Exception ex)
{
ShowErrorNotification(ex.Message);
}
finally
{
IsBusy = false;
}
}
View (User control) Code:
<wpf:ChromiumWebBrowser
Grid.Row="1" Grid.ColumnSpan="2"
x:Name="BrowserTieView"
Address="{Binding TieAddress, Mode=TwoWay}"
Title="Browser Tie View"
AllowDrop="True"/>
View.Xaml.cs
public partial class ServiceJournalsView : UserControl
{
public ServiceJournalsView()
{
InitializeComponent();
BrowserTieView.DownloadHandler = new DownloadHandler();
BrowserTieView.BrowserSettings = new BrowserSettings()
{
ApplicationCache = CefState.Enabled,
FileAccessFromFileUrls = CefState.Enabled,
Javascript = CefState.Enabled,
LocalStorage = CefState.Enabled,
WebSecurity = CefState.Disabled,
JavascriptCloseWindows = CefState.Enabled,
JavascriptDomPaste = CefState.Enabled,
};
BrowserTieView.LoadError += (sender, args) =>
{
// Don't display an error for downloaded files.
if (args.ErrorCode == CefErrorCode.Aborted)
{
return;
}
// Display a load error message.
var errorBody = string.Format(
"<html><body bgcolor=\"white\"><h2>Failed to load URL {0} with error {1} ({2}).</h2></body></html>",
args.FailedUrl, args.ErrorText, args.ErrorCode);
args.Frame.LoadHtml(errorBody, base64Encode: true);
};
Unloaded += async delegate (object sender, RoutedEventArgs args)
{
BrowserTieView.WebBrowser.Dispose();
BrowserTieView.Dispose();
await Task.Delay(10);
};
}
public ServiceJournalsViewModel VMServiceJournalsViewModel
{
get => (ServiceJournalsViewModel) DataContext;
set { DataContext = value; }
}
private void UserControl_Loaded(object sender, RoutedEventArgs e)
{
try
{
BrowserTieView.RegisterJsObject("serviceJournalsJsModel", VMServiceJournalsViewModel.ServiceJournalsJsModel);
}
catch (Exception ex)
{
}
}
}

As per discussion in the comments of the question posted( and as per #amaitland) Multiple instances of Cefsharp.BrowserSubprocess.exe is perfectly normal.

How to know SSIS run package issue when trying to execute

I try to run SSIS with this piece of code:
public class EjecutaPaquete {
private Microsoft.SqlServer.Dts.Runtime.Package pkgPaquete;
private Application appAplicacion;
public DTSExecResult EjecucionPaquete(string str_Paquete, List < CatVariablesEtl > Vars = null) {
DTSExecResult respuesta;
try {
appAplicacion = new Application();
appAplicacion.PackagePassword = "mypass";
pkgPaquete = appAplicacion.LoadPackage(str_Paquete, null);
foreach(CatVariablesEtl item in Vars) {
pkgPaquete.Variables[item.str_NombreVariable.ToString()].Value = item.str_ValorVariable.ToString();
}
respuesta = pkgPaquete.Execute();
return respuesta;
} catch (Exception ex) {
throw new NotImplementedException();
}
}
It read all variables correctly into foreach, problem is when try to execute package respuesta = pkgPaquete.Execute(); first it return succeeded but when it return "respuesta" it get failure

You can read errors from package.Errors property:
msdn - Package.Errors Property
msdn - DtsErrors.Item Property
Code example:
foreach(DtsError item in package.Errors) {
Console.Writeline(item.description);
}

javaFX : How to periodically load information from db and show it on a Label?

I want to execute a method periodically, this method get informations from database it show it into a label, I tried the following code :
Timer timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
#Override
public void run() {
//update information
miseAjour();
}
}, 0, 2000);
when i run the main program, the background service run also normaly but when the informations changes on db i get this exception:
Exception in thread "Timer-0" java.lang.IllegalStateException: Not on FX application thread; currentThread = Timer-0
And this is the code of method miseAjour :
public void miseAjour(){
try {
dbConnection db = new dbConnection();
Connection connect = db.connectiondb();
connect.setAutoCommit(false);
Statement stmt= connect.createStatement();
ResultSet rs = stmt.executeQuery("SELECT count(*) as nbrAderent FROM gss_aderent ");
int nbrAderent = rs.getInt("nbrAderent");
rs.close();
stmt.close();
connect.commit();
connect.close();
main_nbrAdrTot.setText(nbrAderent + "");
} catch (SQLException ex) {
Logger.getLogger(SimpleController.class.getName()).log(Level.SEVERE, null, ex);
}
}

You can Timer for this, but I would recommend to use the JavaFX provided API called as ScheduledService.
ScheduledService is made to execute the same Task at regular intervals and since it creates a Task internally, there are API which help you to bind the value to the UI controls.
ScheduledService<Object> service = new ScheduledService<Object>() {
protected Task<Object> createTask() {
return new Task<Object>() {
protected Object call() {
// Call the method and update the message
updateMessage(miseAjour());
return object; // Useful in case you want to return data, else null
}
};
}
};
service.setPeriod(Duration.seconds(10)); //Runs every 10 seconds
//bind the service message properties to your Label
label.textProperty().bind(service.messageProperty()); // or use your label -> main_nbrAdrTot
Inside the dbcall method miseAjour, return the value that you have fetched and you want to update the label with :
public String miseAjour(){
String nbrAderent = null;
try {
dbConnection db = new dbConnection();
Connection connect = db.connectiondb();
connect.setAutoCommit(false);
Statement stmt= connect.createStatement();
ResultSet rs = stmt.executeQuery("SELECT count(*) as nbrAderent FROM gss_aderent ");
nbrAderent = String.valueOf(rs.getInt("nbrAderent"));
connect.commit();
} catch (SQLException ex) {
Logger.getLogger(SimpleController.class.getName()).log(Level.SEVERE, null, ex);
}
finally {
rs.close();
stmt.close();
connect.close();
}
return nbrAderent;
}

Finnaly i resolved the problem ,here is the code :
public class TimerServiceApp {
public void start() throws Exception {
TimerService service = new TimerService();
service.setPeriod(Duration.seconds(10));
service.setOnSucceeded(new EventHandler<WorkerStateEvent>() {
#Override
public void handle(WorkerStateEvent t) {
main_nbrAdrTot.setText(t.getSource().getMessage());
}
});
service.start();
}
private class TimerService extends ScheduledService<Integer> {
private final StringProperty nbrTotAderent = new SimpleStringProperty();
public final void setTotalAderentNumber(String value ) {
nbrTotAderent.set(value);
}
public String getTotalAderentNumber() throws SQLException {
String nbrAderent = null;
ResultSet rs=null;
Statement stmt=null;
Connection connect=null;
try {
dbConnection db = new dbConnection();
connect = db.connectiondb();
connect.setAutoCommit(false);
stmt= connect.createStatement();
rs = stmt.executeQuery("SELECT count(*) as nbrAderent FROM gss_aderent ");
nbrAderent = String.valueOf(rs.getInt("nbrAderent"));
connect.commit();
} catch (SQLException ex) {
Logger.getLogger(SimpleController.class.getName()).log(Level.SEVERE, null, ex);
}
finally {
rs.close();
stmt.close();
connect.close();
}
System.out.println(" Total aderent number updated to :" + nbrAderent + " Aderents ");
return nbrAderent;
}
protected Task<Integer> createTask() {
return new Task<Integer>() {
protected Integer call() throws SQLException {
nbrTotAderent.setValue(getTotalAderentNumber());
updateMessage(getTotalAderentNumber());
return Integer.parseInt(getTotalAderentNumber());
}
};
}
}
} `
and i called this service by :
TimerServiceApp s = new TimerServiceApp();
s.start();
i dont know if the solution is optimised but it work :) thank you #ItachiUchiha i took the solution from yout answer in the following link

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