Recent questions tagged C#

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c# - How to resolve bound object from bindingexpression with WPF?

Hi does anyone know if there are any inbuilt classes for resolving a bound object from a bindingexpression and it ... advance for any help! Phil See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to tell if there is a console

I've some library code that is used by both console and WPF apps. In the library code, there are some Console. ... if the app has a console? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How can I reuse expressions within LINQ statements?

I like to reuse expressions for DRY reasons, but how do I reuse the expressions within a LINQ statement? e.g. I ... is it a limitation of LINQ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Invoke or BeginInvoke cannot be called on a control until the window handle has been created

I get the following exception thrown: Invoke or BeginInvoke cannot be called on a control until the window handle has ... t know what is wrong. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Call to await GetFileAsync() never returns and app hangs in WinRT app

I'm attempting to load and read a settings file on application launch, and about 90% of the time, the await ... idea of what's happening here? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Why can't we add a Web API as a "service reference" in Visual Studio the same way we can with WCF or ASMX?

I've decided to use Web API (as a middle tier) for an app I'm developing, but can't seem to figure out how ... same way a WCF or ASMX is added? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How turn off pluralize table creation for Entity Framework 5?

I am trying to use Entity Framework 5. The first problem was that EF creats tables automatically. I tried ... (without OnModelCreating method). See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - WP Runtime Component - Type load exception?

What works > Library setup I have a Windows Phone 8 solution with 2 projects: "Hello", a simple library project -> ... embed it... with no luck. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Using Reflection with COM Interop

After an interop call, I get back a COM object. I know this object will be one of three possible COM classes ( ... null, null, null, true); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Getting WM_TOUCH messages from every window and processing in my APP

I am developing touchscreen application. The goal of the application is when the end user is going to make ... my app please respond. Mihail See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - wpf Area Chart with Different Colors?

I a musing the MS toolkit charts and cannot figure out how to change the color of the areas. I need ... the background and foreground. Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Get an instance of the scheduler that is being run on a Windows service

Let us say I have prepared my Quartz.NET as a Windows service and it is currently being run (with an ... is able interact with the desktop. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How can I efficiently update the UI from an async method?

I'm using a ProgressBar with binding to show the progress when receiving a file from a remote device. <ProgressBar ... to speed up the process ? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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389 views

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c# - Reactive Extensions Instant Search for WPF/MVVM

I would like to implement a TextBox where, as you type, results appear instantly in another ListBox. I've been ... work nicely with WPF/MVVM? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to add c++ code to Unity project easy-way?

So, I am trying to build an app in Unity, which requires molecular visualisation. There are some libraries which can ... as easy, as I thought. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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283 views

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c# - Loading a Flash movie from a memory stream or a byte array

I want to load an SWF object from a Memory Stream or a byte array instead of a file on disk. AxShockwaveFlash ... be done at all? Thanks F See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - MySqlClient EndOfStreamException: Fatal error when attempting to read past the end of the stream

I have developed a windows service to read data from a csv and write them back to the database. After executing ... past the end of the stream. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Call was rejected by callee. (Exception from HRESULT: 0x80010001 (RPC_E_CALL_REJECTED))

I have a small C# Winforms Application that is using Word.Interop to Take a Single Mail Merge Document, copy each section ... } } finally { } } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How to drag and drop a "box" in silverlight

I have a created a box like this and now i'm trying to drag and drop the box, with rectangles and other objects I ... = new Thickness(10) }); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - Xamarin WebView - No Intellisense in razor

I'm trying out xamarin webView where you can use a razor-view as the UI. But the intellisense for the C#-code ... symbol...' What to do? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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469 views

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c# - Failed to Load database information in Crystal Report for Visual Studio 2013

I'm having issue with Crystal Reports for VS2013. I have a windows application developed in VS2010 with CR. When ... = rd; crv.RefreshReport(); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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281 views

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c# - INotifyPropertyChanged and ObservableCollection WPF

Right now I have a calender that only displays one month(what ever month I pass in). I'm trying to ... new ObservableCollection<Schedule>(); } See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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c# - How can I determine whether I am connected to WiFi or a mobile network in Windows Phone 8.1 (Universal app)?

I am working with a Windows Universal app (shared backend between Windows 8.1 and Windows Phone 8.1, not ... in a Windows Universal app. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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290 views

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c# - dynamic training/test classes with ML.NET

This is a follow up from the question here Dynamic classes/objects ML.net's PredictionMoadel<TInput, TOutput> ... there a workaround? Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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200 views

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c# - Datagridview comboboxcolumn different values for each row

I want to create a datagridview with comboboxcolumns using c#. The problem is that I dont know how to give ... which solve this issue. Thanks See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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230 views

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c# - Properties generated at runtime (PropertyGrid.SelectedObject)

Ok, this is a tough one. Introduction: My idea is to attach an instanciated QueryBuilder class which I ... are most greatly appreciated! See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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376 views

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c# - Parse String DateTime containing TimeZone Info

I am trying to convert a string value to a datetime value but am getting a System.FormatException error. This ... .WriteLine(dt.ToString()); See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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332 views

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c# - Instantiate an array of objects, in simpliest way?

Given a class: class clsPerson { public int x, y; } Is there some way to create an array of these classes ... of an array of N objects? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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