Recent questions tagged c#

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i have to change my form close button tooltip from "Close" to "Other text", does anyone know how can i ... perform the switch? Thx in advance! See Question&Answers more detail:os...

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

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734 views

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c# - WPF - Cannot change a GUI property inside the OnChanged method (fired from FileSystemWatcher)

I want to change a GUI property in the OnChanged method... (in actuality im trying to set an image source.. but ... blue ban 1"), "avatar"); See Question&Answers more detail:os...

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

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676 views

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c# how to make a Windows 7 aero winform (blured glass)?

how to make somthing like this Windows Forms Glass Effect, Make ImageBox transparent I use VS 2010 See Question&Answers more detail:os...

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

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494 views

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c# - How to pass anonymous types as parameters?

How can I pass anonymous types as parameters to other functions? Consider this example: var query = from employee in ... use instead of ? marks. See Question&Answers more detail:os...

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

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423 views

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c# - Integer validation against non-required attributes in MVC

I've trying to validate a property on a model I have. This property is NOT required, and so if its invalid MVC ... fine. What am I doing 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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794 views

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c# - How are PCSC smart card reader 'friendly names' constructed?

I use WinSCard to list all readers, which gives me a list like this: ASK RDR4x7 0 SCM Microsystems Inc. ... where do the values come from? See Question&Answers more detail:os...

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

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438 views

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c# - Error : Update requires a valid UpdateCommand when passed DataRow collection with modified rows

I am using Paging to show data in datagridview, but when i try to Update any data with updatebutton data should be ... .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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488 views

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c# - How to bound a DataGridViewComboBoxColumn to a object?

I'm trying to bound a DataGridViewComboBoxColumn to an instance of Foo, but when i set a value on the grid i ... value is not valid Any ideas? 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# - content not allowed in prolog exception

I am trying to send xml to a java-based web service given to me by a third party via a c#.NET application, ... > </soap:Body> </soap:Envelope> See Question&Answers more detail:os...

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

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351 views

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c# - Trying to add multiple sheets to excel

i'm trying to programmatically add sheets to a new excel document. my expected output is sheets named 'test1-20' but instead ... 0}", i + 1); } See Question&Answers more detail:os...

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

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397 views

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c# - String Concat using constants - performance

Assume I have the following string constants: const string constString1 = "Const String 1"; const string ... performance and/or memory? See Question&Answers more detail:os...

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

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509 views

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c# - Does the WCF REST WebChannelFactory client support REST services that use redirects?

If you have a RESTful web service that uses HTTP 301 redirects to send requests like: http://server/customers/ ... ServiceContract? If so, how? See Question&Answers more detail:os...

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

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433 views

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c# - Reactive pipeline - how to control parallelism?

I'm building a straightforward processing pipeline where an item is fetched as an input, it is being operated by ... to the processors. Etc... See Question&Answers more detail:os...

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

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638 views

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c# - SemaphoreSlim Await Priority

I am wondering if SemaphoreSlim has anything like a priority when calling Await. I have not been able to find ... the await to return first. See Question&Answers more detail:os...

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

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497 views

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c# - Why does this checked calculation not throw OverflowException?

Can somebody please explain the following behavior: static void Main(string[] args) { checked { double d = -1d ... except in the last case. See Question&Answers more detail:os...

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

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793 views

1 answer

c# - PInvokeStackImbalance exception when using IntPtr in .NET 4? (Works in .NET 3.5)

Might be a bit of noob question but it's something that's been getting me in a pickle for the past ... match the target unmanaged signature. See Question&Answers more detail:os...

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

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425 views

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c# - How do you supply a type that's defined in a web service to another web service (share types)?

I've got 2 WCF services. Service A contains the definition of the type MyEntity. Service B contains a service reference to ... ); } //Do stuff } See Question&Answers more detail:os...

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

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559 views

1 answer

c# - Passing binary data through HttpWebRequest

Using .Net, I want to pass some binary data(some serialized objects) through an HttpWebRequest. Can I just put it ... / http://www.fiddler2.com See Question&Answers more detail:os...

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

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662 views

1 answer

c# - Number increment from string value

I my application due to some reason I have two numbers in 5 digits. The following code give you brief idea. string ... think give me a pain... See Question&Answers more detail:os...

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

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588 views

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c# - How to connect to DB2?

I have to connect to a DB2 database installed on some other system. I have the machine name of the server, the ... other? Where do I find them? See Question&Answers more detail:os...

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

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502 views

1 answer

c# - .net ViewState in page lifecycle

I have a page containing a control called PhoneInfo.ascx. PhoneInfo is dynamically created using LoadControl() and then ... ; return phone; } } See Question&Answers more detail:os...

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

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714 views

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c# - Visual Inheritance - Add controls at designer to a Panel hosted in TableLayoutPanel

I'm making a base form (WinForm) to use like a blueprint for my general form design, I want the panel ... P_Content being the big empty space. See Question&Answers more detail:os...

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

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481 views

1 answer

c# - What is the aspnet_client folder in my ASP.NET website?

I inherited a website and see that folder in the web root. I'm trying to clean out the old crap, and wondering ... it a cache? What creates it? See Question&Answers more detail:os...

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

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391 views

1 answer

c# - Should I be calling an AppService from another AppService?

Context Currently I'm working in a Documents and Records Management System (DRMS?). Because of some technical ... AppService for the files. See Question&Answers more detail:os...

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

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627 views

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c# - No keypress event for asp textbox

Hello i need to work on keypress event of asp textbox but keypress event not available for the asp textbox. Is ... for this problem? Plz help! See Question&Answers more detail:os...

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

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460 views

1 answer

c# - Sum of even fibonacci numbers

This is a Project Euler problem. If you don't want to see candidate solutions don't look here. Hello you all! I'm ... s); Console.Read(); } } } See Question&Answers more detail:os...

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

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1.0k views

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c# - SignalR chat application sending images

I have build the SingnalR chat application MVC5 signalR 2.0 , from the tutorial :- http://www.asp.net/ ... actually displaying on the screen? See Question&Answers more detail:os...

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

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662 views

1 answer

c# - When is ObjectQuery really an IOrderedQueryable?

Applied to entity framework, the extension methods Select() and OrderBy() both return an ObjectQuery, which ... without catching exeptions? See Question&Answers more detail:os...

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

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