I am working on outlook addins 2010.
Outlook add in event not working after Context Menu Attachments item called.
I created a keyboard shortcut using FMUtils.KeyboardHook in outlook addins.
It working fine but when I click the custom item in Context Menu Attachments, it opens my respective windows form but there after my outlook addins event not working.
The keyboard shortcut events not fired.
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
var KeyboardHook = new Hook("Global Action Hook");
KeyboardHook.KeyDownEvent += KeyDown;
}
public void KeyDown(KeyboardHookEventArgs e)
{
if (e.isCtrlPressed && e.isAltPressed && e.Key == Keys.D)
{
//process code
}
}
Please help me to resolve this issue.
You need to define the event source object at the global scope to prevent it from swiping by the garbage collector. For example:
Hook KeyboardHook = null;
private void ThisAddIn_Startup(object sender, System.EventArgs e)
{
KeyboardHook = new Hook("Global Action Hook");
KeyboardHook.KeyDownEvent += KeyDown;
}
So, the object will be alive all the time when the add-in runs.
Related
I'm moving a Winforms app from VB to C#. I have a TrueDBGrid with a ContextMenuStrip thats pops up on a right click. When I don't handle the mnuContext Opening event the menu pops up. When I do handle the event the handler is called but the menu wont popup - even if the handler does nothing.
The code below has been trimmed to just have the handler call, so it's not what the code is doing, just the existence of the handler itself.
public void MenuOpeningHandler(object sender, System.ComponentModel.CancelEventArgs e)
{
e.Cancel = false;
}
Setup code is:
public InvoiceListForm()
{
InitializeComponent();
mnuContext.Opening += MnuContext_Opening;
}
private void MnuContext_Opening(object sender, System.ComponentModel.CancelEventArgs e)
{
MenuOpeningHandler(sender, e);
e.Cancel = false;
}
The event appears to be stopped/Cancelled instead of continuing to propagate and open. Any idea what could be missing?
I have a Windows form that has a validation event on a textBox so that if the value of that TextBox is a value that already exists it triggers a validation error.
private void txtUsername_Validating(object sender, CancelEventArgs e)
{
var alreadyExists = _logic.UserIdExists(txtUsername.Text.Trim());
if(alreadyExists)
{
errorProvider1.SetError(txtUsername, "This Userid already exists, please choose an alternative");
e.Cancel = true;
}
}
private void txtUsername_Validated(object sender, EventArgs e)
{
errorProvider1.SetError(txtUsername, "");
}
this.txtUsername.Validating += new System.ComponentModel.CancelEventHandler(this.txtUsername_Validating);
this.txtUsername.Validated += new System.EventHandler(this.txtUsername_Validated);
This results in an error image appearing next to that textBox along with a tooltip error message.
If I try and close the application, using the Close button at the top of the window, at this time I cannot as the above Event keeps firing even when I try and close the window (due to me taking focus away from the Text box).
Is there a way of closing the window, without resorting to creating an additional Close button on the form?
Based on your description, you want to maintain the default auto-validation behavior yet allow the Form to be closed using the title bar close button. I have observed that the Form.Closing event is raised in such a circumstance, however its argument Cancel property is preset to true. A simple solution is to handle this event and set e.Cancel = false. Implement any logic in the handler that you deem necessary.
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (e.CloseReason == CloseReason.UserClosing) e.Cancel = false;
}
elI am working on a Wpf application. it contains a webbrowser where the user authenticates via Facebook. The problem is that the user is capable of clicking on links (for example: Forgot your password?) the standaard browser then open... what i want to do is to disable/block all the external links. so users can only authenticate and not navigate through the webbrowser control. I hoop you guys can help me out.
Update 1
Like suggested i can check the source of the webbrowser. So i can allow the wanted pages. but the problem are the links. they open on IE. i dont want to open them, but to block them at all
Description image
private void webBrowserFacebook_Navigating_1(object sender, NavigatingCancelEventArgs e)
{
string huidigeLink = Convert.ToString(webBrowserFacebook.Source);
MessageBox.Show(huidigeLink);
// check for allowed pages
}
Update 2
I was able to find a solution: http://social.technet.microsoft.com/wiki/contents/articles/22943.preventing-external-links-from-opening-in-new-window-in-wpf-web-browser.aspx
Very slef explanatory.. thank you guys for the help!
void Window1_Loaded(object sender, RoutedEventArgs e)
{
browser = new WebBrowser();
browser.Navigate(new Uri("http://www.google.com"));
browser.Navigating += new NavigatingCancelEventHandler(browser_Navigating);
browser.Navigated += new NavigatedEventHandler(browser_Navigated);
}
void browser_Navigating(object sender, NavigatingCancelEventArgs e)
{
//Your checks should happen here..
Console.WriteLine("Loading Webpage !!");
}
void browser_Navigated(object sender, NavigationEventArgs e)
{
Console.WriteLine("Webpage Loaded !!");
}
You can register for WebBrowser.Navigating Event.
Navigating event handlers are passed an instance of the NavigatingCancelEventArgs class. You can cancel the navigation by setting the Cancel property of the NavigatingCancelEventArgs object to true.
Or you can invoke script or browser instance to stop loading if URL navigating doesn't matches.
yourWebBrowser.InvokeScript("eval", "document.execCommand('Stop');");
I have a simple WPF button and a textbox in my WPF application(not using MVC or binding at all). I like to be able to do the following upon clicking the button:
1) Clear the textbox
2) Create the result
3) assign the result to the textbox
I used Textbox.Clear, TextBox.Text= String.Empty, delegates and a dispatcher approach like
private void button_Click(object sender, RoutedEventArgs e)
{
Application.Current.Dispatcher.BeginInvoke(new Action (ClearReportTxtBox), DispatcherPriority.Send);
System.Threading.Thread.Sleep(5000);
runTest();
}
private void ClearReportTxtBox()
{
Report_textBox.Text = string.Empty;
}
None of them working correctly for me. The dispatcher method is somehow working but not as I wish. It seems that the Clear task will be queued and when the all actions in the button click handler are finished, it will come into play and delete the textbox, but this causes that the generated report and already assigned to the textbox (created by runtest in the code above) will be deleted as well. Hence it is too late delete action and eliminate the whole result.
Currently it seems to me that by clicking on the button the UIthread blocks and takes the control. The Dispatcher will queue the delete action as next action after finishing the button click.
Is it possible to force delete at the beginning and then do the rest? What I like to reach is that I pause the button activity and do delete at first action and then continue with the rest of actions in the button handler.
Am I doing something wrong?
Thank you for your help in advance.
The "Dispatcher.BeginInvoke" is kinda weird for what you want to do
All the UI update has to be done on main thread. Since the "Button_click" event is executing on main thread, the delegate you push into Dispatcher can only be executed AFTER the button_click handle is completed. That's why the execution sequence becomes
1. The GUI freeze because Thread.Sleep
2. RunTest
3. ClearReportTextBox
Guess you can try sth like the following instead.
private void ButtonBase_OnClick(object sender, RoutedEventArgs e)
{
ClearReportTxtBox();
Task.Factory.StartNew(RunTest);
}
private void ClearReportTxtBox()
{
MyTextBox.Text = string.Empty;
}
private void RunTest()
{
System.Threading.Thread.Sleep(5000);
if (dispatcher != null && !dispatcher.CheckAccess())
{
dispatcher.Invoke(priority, ()=> MyTextBox.Text = "123");
}
else
{
MyTextBox.Text = "123";
}
}
I have a WPF form with 3 buttons and have routed events on them, commands are binded on start...
private void InitCommandBinding(UIElement frameworkElement) {
CommandBinding commandBinding;
commandBinding = new CommandBinding(ViewModelCommands.Save, Save_Executed, Save_CanExecute);
frameworkElement.CommandBindings.Add(commandBinding);
commandBinding = new CommandBinding(ViewModelCommands.SaveAndClose, SaveAndClose_Executed, SaveAndClose_CanExecute);
frameworkElement.CommandBindings.Add(commandBinding);
commandBinding = new CommandBinding(ViewModelCommands.Delete, Delete_Executed, Delete_CanExecute);
frameworkElement.CommandBindings.Add(commandBinding);
}
the details ui has code like
private void Delete_Executed(object sender, ExecutedRoutedEventArgs e) {
try
{do validations }
}
private void Delete_CanExecute(object sender, CanExecuteRoutedEventArgs e) {
e.CanExecute = viewModel.IsValid(); (returns bool)
}
Validity enables and disables buttons etc.
The form has an instance of an object new or old and validations take place on the data
My issue is that the event just excute all the time and the form just hangs cause validation code does poll db etc to check....
how to I just get them to fire once when the form is loaded mmm....
If I understand you well it is only necessary to check the validity of the data at form load and the IsValid method is resource intensive?
Why don't you change the IsValid() method to an IsValid property and set this is in the Form_Loaded event?
The CanExute method will be checked any time the UI fires an event like TextChanged, LostFocus etc. So you better make such methods very lightweight.