Recent questions tagged C#

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c# - Activator.CreateInstance with private sealed class

I'm trying to new up a LocalCommand instance which is a private class of System.Data.SqlClient. ... CreateInstance overload or what? 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# - Excel Interop - Draw All Borders in a Range

I see from Microsoft's documentation that I can access the particular border edges of a cell using the ' ... of the four border indices? See Question&Answers more detail:os...

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

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443 views

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c# - Is it possible to change the background color of the WebBrowser control before loading content?

I have a page that contains a WebBrowser control that is frequently updating content. I am using a black background, ... 't work all that well. See Question&Answers more detail:os...

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

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205 views

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c# - Remove null properties of an object sent to Json MVC

namespace Booking.Areas.Golfy.Models { public class Time { public string time { get; set; } public int holes { ... work but isn't conditional. See Question&Answers more detail:os...

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

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215 views

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c# - How do I determine if System.Type is a custom type or a Framework type?

I want to distinctly determine if the type that I have is of custom class type (MyClass) or one provided ... or other Framework provided types? 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# - How to resolve this System.IO.FileNotFoundException

The error only happens in production (not in debugging). The error only happens on the first application run after Windows ... get; set; } } } See Question&Answers more detail:os...

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

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398 views

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c# - How can I generate a self-signed cert without using obsolete BouncyCastle 1.7.0 code?

I have the following code which generates a nice self-signed cert, works great, but I'd like to update to the ... the performance of 1.7.0. 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# - Programmatically To check dll exists in Gac or not.If so display it in grid

I will have a list of dll's in a folder, I want to check a dll for a application exists or not. ... to do it programmatically. Thanks 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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256 views

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c# - Visual Studio, change app icon, how?

I am working on a first time C# project in Visual Studio 2005 and I am wondering if there is anything special ... and still the same). 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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302 views

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c# - dbcontext does not contain a definition for 'Refresh'

I'm working with the entity framework code first and am getting the following compilation error. dbcontext does not ... not find the namespace. 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# - Property or indexer 'string.this[int]' cannot be assigned to -- it's read only

I didn't get the problem - I was trying to do a simple action: for(i = x.Length-1, j = 0 ; i ... - it contains a substring from another string. See Question&Answers more detail:os...

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

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280 views

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c# - Can I make an ASP.NET Core controller internal?

ASP.NET (and Core) controllers need to be public. Problem is I have a controller which depends (in ... make an internal controller discoverable? See Question&Answers more detail:os...

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

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260 views

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c# - HtmlTextWriter to String - Am I overlooking something?

Perhaps I'm going about this all wrong (and please tell me if I am), but I'm hitting my head against a ... some light on this for me, please? 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

1 answer

c# - check if file exist on 64 bits system using File.Exists

My OS is 64 bits and in the foler C:WindowsSysWOW64 there is a file 111.txt, but there is not the file ... 111.txt under system32 not SysWoW64? See Question&Answers more detail:os...

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

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891 views

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c# - EF Core "Group By could not be translated and will be evaluated locally."

I am running a simple query against an Sql Server database using Entity Framework Core 2.2.6 however the GroupBy is not ... (year, [h].[Date]) See Question&Answers more detail:os...

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

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318 views

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c# - Winforms Label Text property not displaying tab character

This should be very simple. I have a Label control on my Form and I am trying to put a tab character between ... atab"; 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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239 views

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c# - Exchange web services: why is ItemId not constant?

I write a small application, which should automatically process the emails from a public folder. For each email, ... and the specific email? See Question&Answers more detail:os...

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

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232 views

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c# - Why classes tend to be defined as interface nowadays?

These 2-3 last years, many projects I see, like Cuyahoga open source C# CMS, tends to define persistent and non ... ? A design pattern? ... See Question&Answers more detail:os...

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

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346 views

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c# - Strange "Collection was modified after the enumerator was instantiated" exception

Perhaps someone can point me in the correct direction, because I'm completely stumped on this. I have a function ... out there run into this? See Question&Answers more detail:os...

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

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537 views

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c# - SQLite net PCL - Simple select

I use SQLite from windows app and now I am developing in Xamarin a portable app so I am using the plugin ... this field? Thanks for any tip See Question&Answers more detail:os...

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

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373 views

1 answer

c# - Exception when adding log4net config

I am getting an error on the very first line of code in the App.cs file (which is creating a readonly ... /root> </log4net> </configuration> See Question&Answers more detail:os...

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

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406 views

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c# picturebox memory releasing problem

I'm a newby in C#. I have to repeatedly refresh a GUI picture box in a worker thread. The image is acquired ... this memory leak? Thanks a lot! See Question&Answers more detail:os...

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

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278 views

1 answer

c# - Where is the IsEmpty reference/member in this XAML code?

I cannot understand where the IsEmpty comes from in this snippet of code (Path=Text.IsEmpty) (about a watermark ... link about it is great). See Question&Answers more detail:os...

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

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225 views

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c# - Adding headers in ASP.NET MVC 3

I have a basic ASP.NET MVC 3 app. I have a basic action that looks like the following: [AcceptVerbs(HttpVerbs. ... do that? Thank you so much. See Question&Answers more detail:os...

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

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250 views

1 answer

c# - Getting error while redirecting 'Response is not available in this context'

I am using following code to redirect user to a page. Session["USERDATA"] = user; if (roleName.Equals("Zerker" ... context. What should I do? See Question&Answers more detail:os...

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

0 votes

291 views

1 answer

c# - context menu parent?

Hi I added a context menu on label (c#, winforms). my context menu having 3 child items and i want to ... context menu items. thanks 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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843 views

1 answer

c# - FirefoxWebdriver No data is available for encoding 437

I want to create a FirefoxWebdriver but get the following error Message: Initialization method Sma.Ldx.Systemtest.Ui. ... get an encoding error. See Question&Answers more detail:os...

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

0 votes

271 views

1 answer

c# - How do you organise open-source Visual Studio projects with open-source dependencies?

I've started an open source MVC4 project that is using some other open source project as a dependency. I've ... your code in this 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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