Recent questions tagged C#

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c# - Reading connection string from external config file

I have created a console application and an app.config file and Connections.config file. The app.config file has a ... What am I missing 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# - System.Net.Mail.SmtpException: The operation has timed out. error in asp.net send mail code using godaddy hosting

I am using following peace of code to send mail using godaddy hosting . but its throw System.Net.Mail.SmtpException ... , subject, body); } 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 color in specific location on gradient

I have the following GradientStopCollection: GradientStopCollection grsc = new GradientStopCollection(3); grsc.Add(new ... could do that? 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 track if an async/awaitable task is running

I'm trying to transition from the Event-based Asynchronous Pattern where I tracked running methods using unique id's ... { updateMetaData(); } } 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 use only the lower five bits of the shift operand when shifting a 32-bit value? (e.g. (UInt32)1 << 33 == 2)

Consider the following code: UInt32 val = 1; UInt32 shift31 = val << 31; // shift31 == 0x80000000 UInt32 ... compiler is trimming the values? 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# - Automapper - can it map over only existing properties in source and destination objects?

I have a simple update function: public void Update(Users user) { tblUserData userData = _context.tblUserDatas.Where(u ... to be skipped over. 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# - Operation must use an updateable query when updating excel sheet

I am getting this error when trying to update excel sheet : Server Error in '/ReadExcelData_Csharp' Application. Operation ... Yes;IMEX=2""; } 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# - Blazor TwoWay Binding on custom Component

I'm creating a blazor server side app and have problems to bind a value between two custom components. I've ... for each of those properties. 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# - where is blend for visual studio 2012

I see a lot of refs to something called 'blend for visual studio' which I understand a W8 version of blend. I ... download.. How do I get 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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c# - Specify datacontext type on listbox ItemContainer in style

In a ListBox I have a ItemContainer's IsSelected property bound to my ViewModel's IsSelected property using <ListBox. ... }" /> </Style> 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# - Disable Type Hinting in WCF JSON Services

I have what should be a relatively simple question that I can't seem to find an answer for. When WCF ... somebody has figured this out). 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# - Reading multiple child nodes of xml file

I have created an Xml file with example contents as follows: <?xml version="1.0" encoding="utf-8" ?> <Periods> ... ; } } Response.Write(text); } 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 the Stopwatch with Async methods

I have some code as follows: public void Start() { var watch = new Stopwatch(); watch.Start(); Task. ... i.e. MyMethod1, MyMethod2 and MyMethod3 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# - Smooth pinch-zooming and panning on Windows Phone 8

I've managed to implement pinch zooming and panning by hooking up to the ManipulationDelta and ManipulationStarted ... not firing correctly. 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 Set Master Page dynamically?

I have requirement in which i want to set different Master Pages for the Same Page depending upon userid(i.e ... page dynamically?Please 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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259 views

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c# - Visual Studio loses ability to attach to Unity, why?

I'm using Visual Studio with Unity. In general in VS I can simply click "Attach to Unity" and it will build ... Unity is not enough) 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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214 views

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c# - How to use multithreading with Winform?

I'm a newbie with multithreading. I have a winform that have a label and a progress bar. I wanna ... be droppable/drappable while processing? 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# - Azure ServiceBus AutoRenewTimeout

I am using Azure ServiceBus Queues through the .net SDK. There is a flag on the OnMessageHandler/ ... full use of AutoRenewTimeout 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# - Post with int/string (simple type) in body to asp.net core web api 2.1 not working

I'm simply having no luck sending an url encoded form value from postman to a vanilla asp.net core 2.1 ... all sorts of different content-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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177 views

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c# - A middleware should always invoke the next?

I've been trying to understand how ASP.NET 5 pipeline middlewares really work. A middleware, as I know, ... . Is this conclusion right? See Question&Answers more detail:os...

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

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196 views

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c# 3.0 - Do Extension Methods Hide Dependencies?

All, Wanted to get a few thoughts on this. Lately I am becoming more and more of a subscriber of " ... do you avoid using extension methods? 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# - Breakpoint that breaks when data changes in a managed language

I have a class with a list property that seems to lose an element under certain circumstances. I cannot find out ... ideas on how to do 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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554 views

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c# - Format double type with minimum number of decimal digits

I need to format double type so that it has minimum two decimal digits but without limitation for maximum number of ... How can I achieve 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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c# - check if char isletter

i want to check if a string only contains correct letters. I used Char.IsLetter for this. My problem is, ... z without special-letters like á? See Question&Answers more detail:os...

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

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315 views

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c# - Is it safe to use async/await in ASP.NET event handlers?

I was doing some coding in ASP.NET when I came across this: protected async void someButtonClickHandler(...) { ... happen in the general 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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357 views

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c# - Mystery behind System.Array

We know System.Array is a abstract class and whatever DataType[] we use runtime creates some concrete ... some mystery still remains. See Question&Answers more detail:os...

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

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229 views

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c# - How can I find the selected RadioButton's value in ASP.NET?

I have two asp:RadioButton controls which are having the same GroupName which essentially makes them mutually exclusive ... in this scenario. 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# - Assign multiple values to enum elements

Hi I have this enum currently [Serializable] public enum Country { US = 1, Canada = 2, } When I usually get ... but just to give you an Idea. See Question&Answers more detail:os...

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

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