invoke

问题 How do I get PowerShell to wait until the Invoke-Item call has finished? I'm invoking a non-executable item, so I need to use Invoke-Item to open it. 回答1: Unfortunately you can't by using the Invoke-Item Commandlet directly. This command let has a void return type and no options that allow for a wait. The best option available is to define your own function which wraps the Process API like so function Invoke-Command() { param ( [string]$program = $(throw "Please specify a program" ), [string]

问题 I'm new to the world of threading, but a few aspects of an app I'm working on require me to use a BackgroundWorker control to prevent the UI freezing up while it's doing some file operations. What I'm trying to do is update a couple of form labels from within the BackgroundWorker. Having never worked with this before I very quickly discovered that I can't access controls that weren't created within the same thread, so after a bit of research I've implemented the following code that seems to

问题 I'm new to the world of threading, but a few aspects of an app I'm working on require me to use a BackgroundWorker control to prevent the UI freezing up while it's doing some file operations. What I'm trying to do is update a couple of form labels from within the BackgroundWorker. Having never worked with this before I very quickly discovered that I can't access controls that weren't created within the same thread, so after a bit of research I've implemented the following code that seems to

问题 I have a question about invokeAsync and wether the cal order can be taken as reliable ornot. Example: //Get Dispatcher of UI Thread private Dispatcher _dsp = Dispatcher.CurrentDispatcher; //Method called from non-UI Thread private void a() { //Do Stuff b(); _dsp.InvokeAsync(() => { //Do Stuff in UI Thread }); } private void b() { //Do stuff _dsp.InvokeAsync(() => { //Do stuff in UI Thread }); } Can i take for granted that the code in b's InvokeAsync will be ran before the code in a'

问题 I never seen this before but you can invoke the HREF attribute of a link using javascript if the HREF contains javascript:;//code......; On my example below click on both links. they do the same thing even though they have different javascript in the HREF. for example: <script type="text/javascript"> function clickme() { var link = document.getElementById("clickme"); eval(link.href); } </script> <a id="clickme" href="javascript:alert('hello');">I will alert hello</a> <br /> <a href=

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: Can you print anything in C++, before entering into the main function? Is there any possibility to run any other instructions before int main() is invoked? int main(){cout<<"a";} and before that call in main() there is call for cout<<"b"; somewhere before. Maybe this #define thing can help. 回答1: You don't need a define . Just create a global object (in the same file) and its ctor (or anything else you use to

问题 This is a study project. I have three database classes A,B,C. There is a factory class that receives thru its constructor which class's object to create. Each of the three classes[A,B,C] has a constructor with a parameter to supply the database connection object. This is the code I'm using in the factory class's createObject method: Type classtyp = Type.GetType(className); Type[] constrParam = new Type[1]; constrParam[0] = typeof(DBConnection); ConstructorInfo constr = database.GetConstructor

问题 I'm just testing reflection things for curiosity and I'm trying to invoke a private method but I can't find it because is Private . But what I really would like to know is if the visibility of the method could be automatically retrieved in the reflection search to don't worry about if the method to invoke is private, shared, friend, public etc... so there is a BindingFlags flags combination to be able to invoke a method indifferently of which is the method visibility?, I mean without worrying

问题 I'm coding an editor for a game with C#. My programm openes as .txt File by starting a notepad.exe process. If that process exits, I want to call a function within the main form (to update the textbox). Here's what I'm doing so far: void OpenTextEditor(TreeNode node) { Process editor = new Process(); editor.StartInfo.WorkingDirectory = "%WINDIR%"; editor.StartInfo.FileName = "notepad.exe"; var txtfilelocation = GetRealPathByNode(node); var txtfile = File.ReadAllText(txtfilelocation,Encoding

问题 Project is C#. So I have a bunch of multithreaded code that is designed to be run as a library. It's in a seperate project from the UI. My library has a central object that needs to be created before anything that would fire off events is created. Is it possible for this master object to be passed in some objects so that my events can figure out when they would need to be invoked to get back to the main UI thread? I'd really like to keep the UI from have to do a bunch of invoking since his