Recent questions tagged c#

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c# - wpf xaml binding to object created in code behind

Just to start off I am quite new to C# and xaml. I have watched, checked tutorials, about binding, but ... mentioned property to a TextBox. 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# - Is it really impossible to update child collection in EF out of the box (aka non-hacky way)?

Let's say you have these classes in your entities. public class Parent { public int ParentID { get; set; ... the entry and call SaveChanges. 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# - IQueryable vs. IEnumerable in the repository pattern , lazy loading

I have read some articles that state that IEnumerable used to mimic stored procedures or restrict your database. ... one is more preferable? 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# - 3rd party libraries refer to different versions of log4net.dll

I have two different libraries critical to my application that are dependent on different versions of log4net.dll ... to this application. 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# - convert from physical path to virtual path

I have this function that gets the fileData as a byte array and a file path. The error I ... (Configurations.EnvironmentConfig.LargeImagePath)); See Question&Answers more detail:os...

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

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603 views

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c# - Is SortedDictionary a red-black tree?

I saw several quotes about this on the Internet but no official documentation? Can anyone tell me where I can get information about 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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c# - NUnit: Why Doesn't Assert.Throws<T> Catch My ArgumentNullException?

I am posting this question anew at the behest of the distinguished Mr. John Skeet, who suggested I devise a ... testing, but not in general. 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# - Fastest way to calculate the decimal length of an integer? (.NET)

I have some code that does a lot of comparisons of 64-bit integers, however it must take into account the ... boosted things about 10%. 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 get ToString() to show up in Debug

I'd like to get ToString() to display for a class under my control in debug mode. It'd be nice if this ... . Is there an attribute for 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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232 views

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c# - How to create a Uri instance parsed with GenericUriParserOptions.DontCompressPath

When the .NET System.Uri class parses strings it performs some normalization on the input, such as lower- ... but not absolutely necessary). 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# - System.MethodAccessException: Attempt by security transparent method to access security critical method fails on all applications

Hello and thanks in advance for the help, I know that this question or similar questions have been posted ... workarounds would be 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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c# - Using Windows Authentication in ASP.NET

I'm trying to use Windows Authentication in my ASP.NET application. Whenever I try to view the ... </windowsAuthentication> </authentication> 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# - Linq row not found or changed

Error Message: Row not found or changed. Stack Trace: at System.Data.Linq.ChangeProcessor.SubmitChanges(ConflictMode ... bad for my visitors. See Question&Answers more detail:os...

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

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506 views

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c# - How to set Cell value of DataGridViewRow by column name?

In windows forms, I'm trying to fill a DataGridView manually by inserting DataGridViewRows to it, so my code looks like ... what I want 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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374 views

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c# - convert base64Binary to pdf

I have raw data of base64Binary. string base64BinaryStr = "J9JbWFnZ......" How can I make pdf file? I know ... some conversion. Please help me. See Question&Answers more detail:os...

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

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222 views

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c# - What is a Managed Module (compared to an Assembly)?

What is Managed Module in .NET and how is it different from Assemblies? Is a PE file (eg. test.dll) a ... correspond to physical files on disk? 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# - How are the "primitive" types defined non-recursively?

Since a struct in C# consists of the bits of its members, you cannot have a value type T which includes any T ... makes a lot more sense to me. 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# - Xamarin.Forms.Color to hex value

I have a Xamarin.Forms.Color and I want to convert it to a 'hex value'. So far, I haven't found a ... here Color = cell.BackgroundColor }; } See Question&Answers more detail:os...

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

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607 views

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c# - F5 or Start Debugging Button is Greyed Out for Winform application?

I know there are many question related to this already on SO but none of them has woked for me till now. I ... .00 which I suppose is correct. See Question&Answers more detail:os...

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

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547 views

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c# - Different summation results with Parallel.ForEach

I have a foreach loop that I am parallelizing and I noticed something odd. The code looks like double ... affected by the parallelization? See Question&Answers more detail:os...

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

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650 views

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c# - Creating XDocument with xsi:schemaLocation namespace

I need to create the following XML and I'm trying to do this using XDocument. However, I'm having trouble ... /XMLSchema-instance")) ) ); See Question&Answers more detail:os...

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

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463 views

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c# - When using yield within a "using" statement, when does Dispose occur?

I have a question regarding deferred execution and the disposing of data. Consider the following example: private ... program itself is closed? See Question&Answers more detail:os...

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

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307 views

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c# - How do ASP.NET Core's "asp-fallback-*" CDN tag helpers work?

I understand what the asp-fallback-* tag helpers do. What I don't understand is how. For example: <link rel ... values were used, see my answer. 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# - How to change time zone for an asp.net application

I need to set default timezone for my ASP.NET to Asia/Dhaka or GMT+6 timezone. But i cannot find a way ... in advance for the solution :) 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# - .NET Core get connection string from appsettings.json

I develop a simple web app and, in the future, I want to do it as multi-tenancy. So I ... create any constructors for ApplicationContext class. See Question&Answers more detail:os...

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

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237 views

1 answer

c# - Why I cannot the get percentage by using Int

Please forgive my programming knowledge. I know this is a simple thing, but I do not understand why result is always ... b) * 100; Many 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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360 views

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c# - Missing Type.GetProperty() method in Windows 8 Developer Preview

I'm trying to port a simple application to Windows 8 Metro (WinRT). It seems that some very basic ... this GetTypeInfo() extension 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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534 views

1 answer

c# - How do I get LINQ to order according to culture?

Let's say I've got a list of strings with Swedish words: banan, ?pple, apelsin, druva. Now I want to get ... can do to keep the LINQ intact? See Question&Answers more detail:os...

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

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