Recent questions tagged C#

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c# - Access environment name in Program.Main in ASP.NET Core

Using ASP.NET Mvc Core I needed to set my development environment to use https, so I added the below to ... certificate from the command line. 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 learn Silverlight fast?

I need to make Silverlight application. I'm going to need server side, which I'm going to make with C# ... to server side with silverlight? 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

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c# - How to play multiple videos in sync over multiple monitors using directshow?

I′ve successfully managed to play up to 8 videos in sync using a single video window with multiple streams using ... Thanks a lot 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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299 views

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c# - ASP.NET MVC3 double validation (comma, point, null)

My controller looks like this: public class PortefeuilleController : Controller { public ActionResult Create() { ... appreciated. 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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151 views

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c# - Download file in chunks (Windows Phone)

In my application I can download some media files from web. Normally I used WebClient.OpenReadCompleted method to download, ... } } } } } See Question&Answers more detail:os...

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

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228 views

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c# - Get a service in a IServiceCollection extension

I have this extension public static class ServiceCollectionExtensions { public static IServiceCollection MyExtension(this ... work.. See Question&Answers more detail:os...

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

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301 views

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c# - Showing progress in percentage while uploading and downloading using HttpWebRequest class

I'm trying to upload and download (in the same request) to a server using HttpWebRequest in C# and since the ... and not await keyword! 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# - How to add security header to a SOAP message?

I'm trying to consume a WebService written in Java by our provider from our C# App. When it's time to ... some code, to get me started. See Question&Answers more detail:os...

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

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354 views

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c# - How can I create a dynamic Select on an IEnumerable<T> at runtime?

Given that I have an IEnumerable<T>, where T is any object, how can I select a specific property ... .Select(primaryKeyExpression).ToList(); 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# - Insert new object with existing object

I am new to EF 4 and this is what I have done so far: Create an edmx file based on my database ... without creating a new record for objectB? See Question&Answers more detail:os...

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

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176 views

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c# - Determine clicked column in ListView

I need to get the column clicked in a ListView in C# I have some sample code from How to determine the ... sure how I should implement 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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323 views

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c# - Putting IME in a custom text box, derived from Control

I have created my own single-line textbox control in C# .net 3.5 I've written this completely from scratch, ... move it across easily enough. See Question&Answers more detail:os...

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

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561 views

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c# - Reading from an USB barcode scanner

I've got this nice USB barcode scanner and I'd like to readthe input using the USB driver and not the keyboard ... of real use... 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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467 views

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c# - Can RestSharp send binary data without using a multipart content type?

I have been using AddParameter to include XML bodies in my HTTP requests: request.AddParameter(contentType, body, ... . <other arbitrary bytes> See Question&Answers more detail:os...

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

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155 views

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c# - How to map properties of two different objects?

I want to know how to map fields of two different objects and assign the values to it. Eample: public class ... : mgrId can be like mgrCode) 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# - Using unicode characters bigger than 2 bytes with .Net

I'm using this code to generate U+10FFFC var s = Encoding.UTF8.GetString(new byte[] {0xF4,0x8F,0xBF,0xBC}); I ... I modify this to make it work? See Question&Answers more detail:os...

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

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233 views

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c# - Howto perform a 'contains' search rather than 'starts with' using Lucene.Net

We use Lucene.NET to implement a full text search on a clients website. The search itself works already but we ... Analyzer but I'm not sure. See Question&Answers more detail:os...

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

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248 views

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c# - Add an Item to the visual studio folder right-click menu within AddIn

I want to add a menuitem to the right-click=>Add menu in visual studio 2012 solution explorer. When click the custom ... .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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477 views

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c# - WebRequest Equivalent to CURL command

I am banging my head against a wall trying to convert a working curl command to a c# WebRequest. I have ... would be much appreciated! 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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565 views

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c# - how to pause/resume a thread

How can I pause/resume a thread? Once I Join() a thread, I can't restart it. So how can I start a ... show some random text in a label control. See Question&Answers more detail:os...

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

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1.1k views

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c# - Serialize Dynamic Property Name for an Object using JSON.NET

I'm using JSON.NET for serialization of my objects for connecting to a REST API. One of the ... JsonObject(MemberSerialization.OptIn)] attribute See Question&Answers more detail:os...

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

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316 views

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c# - System.Linq.Dynamic - Can I use IN clause in WHERE statement

I have dynamic linq WHERE statement: dataContext.Table.Where("id = 0 Or id = 1 Or id = 2 Or ..."); ... can I do this for better performance? See Question&Answers more detail:os...

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

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242 views

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c# - Freeze DataGrid Row

I was wondering if in a WPF datagrid in .net 4.0, is it possible to have a static row. What I am ... scrolls through the datagrid. Thank you. See Question&Answers more detail:os...

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

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152 views

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c# - Unable to set datetime format in MVC 4 using data annotations

I will try everything but not working this(dd/MM/yyyy) date format, this always gate mm/dd/yyyy [Display(Name = "Release ... } }); }); </script> See Question&Answers more detail:os...

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

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610 views

1 answer

c# - Converting UTM (wsg84) coordinates to Latitude and Longitude

I've been searching for a while now (here and on google obviously) for a neat way to convert a set of ... is greatly appreciated! :) 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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431 views

1 answer

c# - How to identify doc, docx, pdf, xls and xlsx based on file header

How to identify doc, docx, pdf, xls and xlsx based on file header in C#? I don't want to rely on the file ... , pdf, xls or xlsx. Any thoughts? 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

1 answer

c# - Using enums in WCF Data Services

I'm trying to manually build a WCF Data Service using a POCO data model and I cannot figure out how to ... case the answers are more clear. See Question&Answers more detail:os...

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

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305 views

1 answer

c# - Sending messages to WCF host process

I have a Console application hosting a WCF service. I would like to be able to fire an event from a ... derive a custom class from ServiceHost? See Question&Answers more detail:os...

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

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