I'm testing the faces plugin: http://imageresizing.net/docs/v4/plugins/faces
But I'm only getting the response "Object reference not set to an instance of an object.". Why? From the look of it the error is from the ImageRezing.net software.
Here is an example to see the error:
http://azure.content.dev.bloc.net/azure/group/200000206/5319/2018/10/10/20150406145944-dos-donts-taking-perfect-linkedin-profile-picture-selfie-mobile-camera-2.jpeg?f.detect=true
Exception information:
Exception type: NullReferenceException
Exception message: Object reference not set to an instance of an object.
at ImageResizer.Plugins.Faces.FeatureDetectionBase`1.Dispose()
at ImageResizer.Plugins.Faces.FacesPlugin.PostPrepareSourceBitmap(ImageState s)
at ImageResizer.Resizing.AbstractImageProcessor.PostPrepareSourceBitmap(ImageState s)
at ImageResizer.ImageBuilder.Process(ImageState s)
at ImageResizer.ImageBuilder.BuildJobBitmapToBitmap(ImageJob job, Bitmap source, Boolean transparencySupported)
at ImageResizer.ImageBuilder.BuildJobBitmapToStream(ImageJob job, Bitmap source, Stream dest)
at ImageResizer.ImageBuilder.BuildJob(ImageJob job)
at ImageResizer.ImageBuilder.Build(ImageJob job)
at ImageResizer.InterceptModule.<>c__DisplayClass5_0.b__1(Stream stream)
at ImageResizer.Plugins.DiskCache.CustomDiskCache.<>c__DisplayClass29_0.b__0()
at ImageResizer.Plugins.DiskCache.LockProvider.TryExecute(String key, Int32 timeoutMs, LockCallback success)
at ImageResizer.Plugins.DiskCache.CustomDiskCache.GetCachedFile(String keyBasis, String extension, ResizeImageDelegate writeCallback, Int32 timeoutMs, Boolean asynchronous)
at ImageResizer.Plugins.DiskCache.DiskCache.Process(IResponseArgs e)
at ImageResizer.Plugins.DiskCache.DiskCache.Process(HttpContext context, IResponseArgs e)
at ImageResizer.InterceptModule.HandleRequest(HttpContext context, HttpModuleRequestAssistant ra, IVirtualFile vf)
at ImageResizer.InterceptModule.CheckRequest_PostAuthorizeRequest(Object sender, EventArgs e)
at System.Web.HttpApplication.SyncEventExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute()
at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step)
at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)
Global.asax has nothing:
using ImageResizer.Plugins.RemoteReader;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.SessionState;
namespace Bloc.AzureContent
{
public class Global : System.Web.HttpApplication
{
protected void Application_Start(object sender, EventArgs e)
{
RemoteReaderPlugin.Current.AllowRemoteRequest += Current_AllowRemoteRequest;
}
static void Current_AllowRemoteRequest(object sender, RemoteRequestEventArgs args)
{
args.DenyRequest = false;
}
protected void Session_Start(object sender, EventArgs e)
{
}
protected void Application_BeginRequest(object sender, EventArgs e)
{
}
protected void Application_AuthenticateRequest(object sender, EventArgs e)
{
}
protected void Application_Error(object sender, EventArgs e)
{
}
protected void Session_End(object sender, EventArgs e)
{
}
protected void Application_End(object sender, EventArgs e)
{
}
}
}
Related
Hi i am trying to implement sqldependancy with signalr for new database changes. but the problem is if i edit only one row then also sqldependancy is firing more time. and some time it is not firing. I have web application without MVC. bellow is my code
public void page_load(object sender, EventArgs e)
{
//notification.GetAllUnreadSalesNotifications();
NewScrapNotifications();
}
public void NewScrapNotifications()
{
string message = string.Empty;
using (SqlConnection connection = new SqlConnection(IFTDAL.IFTCommon.DSN))
{
string query = "SELECT [Message] FROM [dbo].[DummyData]";
using (SqlCommand command = new SqlCommand(query, connection))
{
command.Notification = null;
SqlDependency dependency = new SqlDependency(command);
dependency.OnChange += new OnChangeEventHandler(dependency_OnChange);
connection.Open();
SqlDataReader reader = command.ExecuteReader();
if (reader.HasRows)
{
reader.Read();
message = reader[0].ToString();
}
}
}
}
private void dependency_OnChange(object sender, SqlNotificationEventArgs e)
{
if (e.Type == SqlNotificationType.Change)
{
IFTHub nHub = new IFTHub();
nHub.NotfiyAllClients();
// NewScrapNotifications();
//LoadDashboardByDashboardViewID(1);
}
}
and I also have bellow code in Globa.asax
void Application_Start(object sender, EventArgs e)
{
// Code that runs on application startup
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
SqlDependency.Start(DAL.DSN);
}
protected void Application_End(object sender, EventArgs e)
{
SqlDependency.Stop(DAL.DSN);
}
You are creating new SQLDependency on each page load (refresh). I bet there is correlation between number of page reloads and number of notifications page is receiving via SignalR.
Register your notification only once per app lifetime...
I start MVC4 project in VS2010,
In Global.asax.cs like :
public class MvcApplication : System.Web.HttpApplication
{
protected void Application_Start()
{
AreaRegistration.RegisterAllAreas();
WebApiConfig.Register(GlobalConfiguration.Configuration);
FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
RouteConfig.RegisterRoutes(RouteTable.Routes);
BundleConfig.RegisterBundles(BundleTable.Bundles);
AuthConfig.RegisterAuth();
}
}
how to register Session Start event ?
You can just add this to your Global.asax.cs like this:
protected void Session_Start(object sender, EventArgs e)
{
// event is raised each time a new session is created
}
protected void Session_End(object sender, EventArgs e)
{
// event is raised when a session is abandoned or expires
}
You should also probably check
http://msdn.microsoft.com/en-us/library/bb470252(v=vs.100).aspx
Cheers!
Here's an example. On the app below, I click Start, then Stop - in Release only*, the Start routine's catch does not get the Stop's exception.
*EDIT: Now I find this is specific not to Release build, but to any build run outside the debugger. I.e. Release and Debug builds outside the debugger fail, and Debug build inside the debugger is OK. Rather worrying to see that not attatching the debugger can have such a detrimental effect!
EDIT: Here's the stack trace from running Release build from Windows Explorer:
WindowsFormsApplication1.RunStopException: Exception of type 'WindowsFormsApplication1.RunStopException' was thrown.
at WindowsFormsApplication1.Form1.Stop_button_Click(Object sender, EventArgs e) in D:\Projects\! FastSpecc FAP2\RunStopExceptionfail\Form1.cs:line 35
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
and the stack trace from running Debug from the VS2010 debugger: http://img502.imageshack.us/img502/2749/runstopexceptionfaildeb.png
Code as text:
using System;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
Start_button.Enabled = true; Stop_button.Enabled = false;
}
private void Start_button_Click(object sender, EventArgs e)
{
this.Text= "Started";
try
{
Start_button.Enabled = false; Stop_button.Enabled = true;
while (true)
Application.DoEvents();
}
catch (RunStopException)
{
// in Debug build, works fine.
// In Release build, fails
// Unhandled exception has occurred in your application. ...
// Exception of type 'WindowsFormsApplication1.RunStopException' was thrown.
this.Text= "Stopped";
Start_button.Enabled = true; Stop_button.Enabled = false;
}
}
private void Stop_button_Click(object sender, EventArgs e)
{
this.Text= "Stopping";
throw new RunStopException();
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
public class RunStopException : Exception { }
}
I have a simple Silverlight 4 application and have added a child window to it. I am using the below code to open it on a button click. This seems like it should work, does it not?
public void btnAbout_Click(object sender, RoutedEventArgs e)
{
About aboutThis = new About();
aboutThis.Show();
}
The "About" class looks like this:
public partial class About : ChildWindow
{
public About()
{
InitializeComponent();
}
private void OKButton_Click(object sender, RoutedEventArgs e)
{
this.DialogResult = true;
}
private void CancelButton_Click(object sender, RoutedEventArgs e)
{
this.DialogResult = false;
}
}
I don't see any reason why it should not work.
Samples:
http://www.tanguay.info/web/index.php?pg=codeExamples&id=135
http://www.silverlighttoys.com/Tutorials.aspx?tutorial=2
What is your XAML like?
Try setting the Width and Height to 600px by 600px of your About Childwindow from xaml.
Running the following code resulting in an HostException;
Public Sub RunPowershellInConsole(ByVal scriptText As String)
Dim config = RunspaceConfiguration.Create
Dim args() As String = New String() {scriptText}
ConsoleShell.Start(config, "Windows PowerShell", "", args)
End Sub
.
System.Management.Automation.Host.HostException was unhandled
Message=The Win32 internal error "The handle is invalid" 0x6 occurred when retrieving handle for active console output buffer. Contact Microsoft Support Services.
Source=Microsoft.PowerShell.ConsoleHost
WasThrownFromThrowStatement=False
StackTrace:
at Microsoft.PowerShell.ConsoleControl.GetActiveScreenBufferHandle()
at Microsoft.PowerShell.ConsoleHostRawUserInterface.GetBufferInfo(CONSOLE_SCREEN_BUFFER_INFO& bufferInfo)
at Microsoft.PowerShell.ConsoleHostRawUserInterface.get_ForegroundColor()
at Microsoft.PowerShell.ConsoleHostRawUserInterface..ctor(ConsoleHostUserInterface mshConsole)
at Microsoft.PowerShell.ConsoleHostUserInterface..ctor(ConsoleHost parent)
at Microsoft.PowerShell.ConsoleHost..ctor(RunspaceConfiguration configuration)
at Microsoft.PowerShell.ConsoleHost.CreateSingletonInstance(RunspaceConfiguration configuration)
at Microsoft.PowerShell.ConsoleHost.Start(RunspaceConfiguration configuration, String bannerText, String helpText, String preStartWarning, String[] args)
at Microsoft.PowerShell.ConsoleShell.Start(RunspaceConfiguration configuration, String bannerText, String helpText, String preStartWarning, String[] args)
at Microsoft.PowerShell.ConsoleShell.Start(RunspaceConfiguration configuration, String bannerText, String helpText, String[] args)
at MyApp.Barry.Bosely.RunPowershell.RunPowershellInConsole(String scriptText) in C:\Dev\MiscProjects\GordonB\Barry\Barry.Bosely\RunPowershell.vb:line 87
at MyApp.Barry.Bosely.frmMain.TEstToolStripMenuItem_Click(Object sender, EventArgs e) in C:\Dev\MiscProjects\GordonB\Barry\Barry.Bosely\frmMain.vb:line 119
at System.Windows.Forms.ToolStripItem.RaiseEvent(Object key, EventArgs e)
at System.Windows.Forms.ToolStripMenuItem.OnClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleClick(EventArgs e)
at System.Windows.Forms.ToolStripItem.HandleMouseUp(MouseEventArgs e)
at System.Windows.Forms.ToolStrip.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.ToolStripDropDown.OnMouseUp(MouseEventArgs mea)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ToolStrip.WndProc(Message& m)
at System.Windows.Forms.ToolStripDropDown.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)
at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG& msg)
at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context)
at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context)
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel()
at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine)
at MyApp.Barry.Bosely.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81
at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args)
at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
at System.Threading.ThreadHelper.ThreadStart()
InnerException: System.ComponentModel.Win32Exception
ErrorCode=-2147467259
Message=The handle is invalid
NativeErrorCode=6
InnerException:
Little help anyone?
I have just tried this code in my Console Application and it worked:
using System.Management.Automation.Runspaces;
using Microsoft.PowerShell;
namespace TryConsoleShell
{
class Program
{
static void Main(string[] args)
{
var config = RunspaceConfiguration.Create();
ConsoleShell.Start(config, "Windows PowerShell", "help text", new string[] { "-noexit", "ls" });
}
}
}
I guess your application is Windows Application and this scenario is either not supported at all or you still have to have a console window available (I have not tried this way yet).
EDIT:
It worked in WinForm Application as well. But the console window is still needed for the console host. To make the console window available just change the project output type to Console Application.
using System;
using System.Management.Automation.Runspaces;
using System.Windows.Forms;
using Microsoft.PowerShell;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e)
{
var config = RunspaceConfiguration.Create();
ConsoleShell.Start(config, "Windows PowerShell", "help text", new string[] { "-noexit", "ls" });
}
}
}
P.S. I have never seen use of this scenario in practice and did not even know that it actually works. Are there some practically useful applications of it?