Recent questions tagged C#

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c# - How to parse a string to find key-value pairs in it

While searching mail in Google, we use the sytax like from:devcoder hasattachments:true mySearchString on:11-aug or ... this parsing in c#. See Question&Answers more detail:os...

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

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570 views

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c# - Inserting a date/time value in Access using an OleDbParameter

I'm trying to do an insert in oledb(ms access database) the field called objectdate is date/time the ... type mismatch in criteria expression. See Question&Answers more detail:os...

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

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448 views

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c# - Wpf start in primary screen

If user has multiple screens, how can I start application in primary screen or chosen screen at start up See Question&Answers more detail:os...

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

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367 views

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c# - Cancel Async Task from a button

What I need to do is be able to cancel a task that is running async. I have been searching and cannot seem to wrap my head ... ; } )); }); }); } 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 Action<T> callback to an await

I have a method that takes a Action<String>. When the method finishes its processing it ... await MyWrapperMethodThatCallsMethodWithCallback(); See Question&Answers more detail:os...

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

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513 views

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c# - InsertAllOnSubmit only inserts first data record

I noticed a strange behaviour in my Import Service today when I tried to import multiple data records. When I ... [EDIT] Added two screenshots. 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# - What is it called when you edit an interface?

I am going through a LitJSON library. In the code there are lots of segments like public class JsonData : ... (is it overriding still?). See Question&Answers more detail:os...

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

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722 views

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c# - Missing operand after 'Operator Name' operator

I am filtering my gridview using dataview. I am passing the filter command to dataview as mentioned below; string ... i am unable to catch. See Question&Answers more detail:os...

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

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486 views

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c# - Can't create sequence in SQL Server 2008

I have tried to create a sequence in SQL Server 2008 using the following query, CREATE SEQUENCE serial START ... sequence in SQL Server 2008? 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 up a breadcrumb in an ASP.net page

My folder hierarchy for the pages are (They are all in the same folder): Site.Master Default.aspx find_provider.aspx ... - BC MAIN --> Output: See Question&Answers more detail:os...

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

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549 views

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c# - Load a BitmapSource and save using the same name in WPF -> IOException

When I try to save a BitmapSource that I loaded earlier, a System.IO.IOException is thrown stating another ... Thanks alot for any solutions. See Question&Answers more detail:os...

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

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536 views

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c# - MouseLeftButtonUp does not fire

I have a Button <Button> <Button.Template> <ControlTemplate> <StackPanel> <Image Source="share.png" MouseLeftButtonUp=" ... I solve it? 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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399 views

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c# - Load csv into oleDB and force all inferred datatypes to string

Im trying to load a csv file into a datatable using oledb. This is no problem but unfortunately one of the ... text;HDR=Yes;FMT=Delimited'"; 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# - Can't list some folders

I'm getting an "Access denied" exception when trying to list some folders on my PC, such as 'c:Documents and ... to do to access such 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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483 views

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c# - Is there a way to change the console Icon at runtime

i'm not interested in changing the actual icon in the EXE that shows up in windows explorer, but just the ... are new emails or something. See Question&Answers more detail:os...

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

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504 views

1 answer

c# - How to find the location of the icon in the system tray

I have a NotifyIcon control that appears in the system tray. How can I find the location (x, y) of the icon on the screen? 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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412 views

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c# - Strategies for migrating serialized Json.NET document between versions/formats

I'm using Json.Net to serialize some application data. Of course, the application specs have slightly ... = ObjectCreationHandling.Reuse }; 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

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c# - Why does GetWindowText hang with a "closed" handle but not with a random one

Using the following code [DllImport("user32.dll", EntryPoint = "GetWindowText", ExactSpelling = false, CharSet ... please explain this behavior? See Question&Answers more detail:os...

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

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588 views

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c# - XDocument : is it possible to force the load of a malformed XML file?

I have a malformed XML file. The root tag is not closed by a tag. The final tag is missing. When I ... and sometimes the file 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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455 views

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c# - Parse CIM_DateTime to .Net DateTime

My application is receiving some date information from WMI. This in the form of strings with the following format: ... am I doing wrong 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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715 views

1 answer

c# - Find the maximum depth of a tree

I have a tree data structure with N first-level child nodes that have childs too. For example: Root Node1 ... levels. Any suggestion? 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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595 views

1 answer

c# - How to make drawLine smoother?

I use the following code to draw line: Graphics g = this.CreateGraphics(); Pen p = new Pen(Color.Black,3); ... I make it straight and smoother? See Question&Answers more detail:os...

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

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840 views

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c# - Exception on SslStream.AuthenticateAsClient (The message was badly formatted)

I have got wierd problem going on. I am trying to connect to Apple server via TCP/SSL. I am using a ... website. Anyone has got any ideas? See Question&Answers more detail:os...

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

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836 views

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c# - How to force Swagger/Swashbuckle to append an API key?

I have a .NET Core 2.x project which integrates Swagger and Swashbuckle v4.x. And it all works really well. ... string. What am I missing? See Question&Answers more detail:os...

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

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697 views

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c# - Method parameter to accept multiple types

I'm developing an application which in I got multiple types of RichTextBoxs which I've customized ( ... suggestion 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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525 views

1 answer

c# - Character after hyphen affects string.compare

I would expect "2-" and "22" to always compare the same way, but changing the 3rd character changes the sort order ... is en-US by the way. See Question&Answers more detail:os...

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

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436 views

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c# - How to know if external application was closed?

How can I say if a winform whas closed do ...? bool isRunning = false; foreach (Process clsProcess in Process. ... looping to see if its there? See Question&Answers more detail:os...

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

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507 views

1 answer

c# - Downloading files from the database in Asp.Net Mvc

I'm storing my files in the database and need to download a file when button clicked. i can get the File content ( ... it as a file to the user? See Question&Answers more detail:os...

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

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