Recent questions tagged C#

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c# - Printing a comma (,) after each item in an array

Lets say I have an array (or list) of items A[] = [a,b,c,d,e] If I want to print them out so ... the last element as well, which is undesirable. 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# - Extended selection mode, virtualization and IsSelected binding

It seems in extended selection mode IsSelected binding is buggy. Looks like only last item from selection ... without disabling virtualization? 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 column name from gridview?

I would like to know how can I get a column name from a gridview? by its number not by name. like : Name|Age| ... 0 , age=1 etc...) 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# - Check for MS Access database table if not exist create it

How do you programmatically check for MS Access database table, if not exist then create 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# - How do I see all services that a .NET IServiceProvider can provide?

This is a general question regarding .NET I am given an instance of the IServiceProvider interface, but I have ... services it might provide? See Question&Answers more detail:os...

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

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412 views

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c# - DataGridView put text in ColumnHeader of RowHeader

Is it possible to add text into ColumnHeader of the RowHeader. I put autoincrement into Rowheaders of my ... " column are actually RowHeaders See Question&Answers more detail:os...

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

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671 views

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c# - Win Form Charting

I may be asking the wrong question, but what I need is to add a "Guide Line" to my windows form chart. In other words I ... 1 2 3 4 5 6 7 8 9 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# - ï»¿ characters appended to the beginning of each file

I've downloaded an HttpHandler class that concatenates JS files into one file and it keeps appending the ??? characters ... return true; } } } 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 XElement to query for a node in namespace

i'm trying to pull out a node from a csproj file that looks like this, but can't get it to work - ... nsm); Anyone any ideas please? 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# - Why can I not deserialize this custom struct using Json.Net?

I have a struct representing a DateTime which also has zone info as below: public struct DateTimeWithZone { ... help is much 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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337 views

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c# - Why can't you UnRegisterStartupScript?

Seems to me it is a bit wierd that you can do.. Page.ClientScript.RegisterStartupScript(this.GetType(), "KeyName" ... it do nothing.. 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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c# - Overloading null ambiguity

I have the following methods: void Method(string param1, string param2); void Method(string param1, object param2) ... will never have null. See Question&Answers more detail:os...

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

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612 views

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c# - Keeping a PictureBox centered inside a container

I am designing a simple picture viewer with ability to do some basic image processing. At the moment I have the ... is as big as its image. See Question&Answers more detail:os...

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

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380 views

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c# - Single Web API controller per resource or less controllers with more custom actions?

I want to expose most of my business layer methods to a Web API project to allow for broader consumption. One ... In areas? Or just folders? 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.ArgumentException: Parameter is not valid

I have a page that sends html5 canvas data, encoded as a base64 bmp image (using this algorithm http:/ ... insight would be greatly 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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392 views

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c# - What is the maximum precision of the Timer in .NET?

I'm wondering what the precision of the Timer class is in System.Timers, because it's a double (which would ... of milliseconds). What is 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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606 views

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c# - How do I use the new HttpClient from Windows.Web.Http to download an image?

Using Windows.Web.Http.HttpClient how can I download an image? I would like use this HttpClient because it ... use in portable class libraries. See Question&Answers more detail:os...

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

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546 views

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c# - Application.Current "null" in console application

I'm currently trying to use a WPF component that makes use of Application.Current from a WPF application, ... be welcome! 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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835 views

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c# - Can I set a value on a struct through reflection without boxing?

Actually, I should've asked: how can I do this and remain CLS Compliant? Because the only way I can think ... to a) struct through reflection? See Question&Answers more detail:os...

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

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1.2k views

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c# - Why am I getting "Cannot access a closed Stream" here?

Stack trace looks like [ObjectDisposedException: Cannot access a closed Stream.] System.IO.__Error.StreamIsClosed() +53 System ... ); throw; } } See Question&Answers more detail:os...

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

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577 views

1 answer

c# - Disable Parent Panel, while keeping child panel enabled

I have a WinForms app, and I have a massive Panel in it. And inside that Panel is a bunch of stuff ... But, that just makes tinyPanel disappear. See Question&Answers more detail:os...

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

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499 views

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c# - Process.GetProcessesByName(String, String) Memory Leak

I have a piece of code that gets a list of processes on a remote computer using the static method Process. ... processes = null; } } See Question&Answers more detail:os...

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

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1.2k views

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c# - How to Get PDF page width and Height?

I have a pdf , and I want to get the width and Height for each page in pdf using iTextSharp? given ... reader = new PdfReader(source); See Question&Answers more detail:os...

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

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363 views

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c# - How to use XmlWriterSettings() when using override void WriteEndElement()?

I am working with a legacy application that does not import abbreviated empty xml elements. For example: BAD ... with my legacy 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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493 views

1 answer

c# - What happens when one places a semi-colon after a while loop's condition?

I've come across a situation like this a few times: while (true) { while (age == 5); //What does this ... useless as it never enters the block? See Question&Answers more detail:os...

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

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403 views

1 answer

c# - Update Entity from ViewModel in MVC using AutoMapper

I have a Supplier.cs Entity and its ViewModel SupplierVm.cs. I am attempting to update an existing ... AutoMapper for Updating Entities. See Question&Answers more detail:os...

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

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533 views

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c# - How to Moq Setting an Indexed property

I'm trying to use mock to verify that an index property has been set. Here's a moq-able object with an ... the correct way to accomplish 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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414 views

1 answer

c# - Renaming Directory with same name different case

I am trying to rename a directory in c# to a name that is the same only with differing case. For example: ... , and rename the temp directory? See Question&Answers more detail:os...

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

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