Recent questions tagged C#

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c# - ListView with columns and bindings performance

I have performance issue with ListView: Single item takes 13-30 ms to create (50 items is over 1 second). ... Am I doing some obvious mistake? See Question&Answers more detail:os...

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

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477 views

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c# - Array of Labels

How to create array of labels with Microsoft Visual C# Express Edition ? Is there way to do it with graphical ( ... it to auto generated code ? 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# - Azure PDF Sharp not using Unicode font

We have a C# website that is hosted using Azure Cloud Services and uses PDF Sharp to generate PDF documents. ... on the Cloud Service servers? 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# - Silverlight 3 - Data Binding Position of a rectangle on a canvas

I am currently trying to bind a collection of objects to a Canvas in Silverlight 3 using an ItemsControl as below: ... of elements on a canvas? 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# - Can we change the text/background color of an individual property in PropertyGrid

I have a .NET PropertyGrid control which displays properties of some class. I want to change the color or font or ... types like bool, int etc? See Question&Answers more detail:os...

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

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391 views

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c# - Drag & drop of a dynamically created shortcut

I have a C# application that creates shortcuts to launch other programs with specific arguments and initial directories. I ... a link (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# 4.0 - Elastic Search-Search string having spaces and special characters in it using C#

I am looking for ElasticSearch nest query which will provide exact match on string having spaces in it using C#. ... you please share with 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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707 views

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c# - How to cancel the WPF form minimize event

I want to cancel the natural minimizing behavior and change a WPF form size instead. I have a solution with the ... ; } } } Thanks, EP 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# - EF Core / Sqlite one-to-many relationship failing on Unique Index Constraint

The context is each Car has a corresponding CarBrand. Now my classes are as shown below: public class Car { ... exception happens 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# - Namespace collisions

How is it possible that .NET is finding the wrong 'MyType' in this scenario? I have a type A.B.C.D. ... is even possible. Any ideas? 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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377 views

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c# - sorting a generic list of doubles

I have a generic list of doubles that show on the page like this: 1199.17 1199.17 1161.67 1161.67 1161.67 1161. ... not work. How can I 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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763 views

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c# - WPF dependency property setter not firing when PropertyChanged is fired, but source value is not changed

I have an int dependency property on my custom Textbox, which holds a backing value. It is bound to an int? ... breakpoint is not hit 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# - How to sort inner list that is returned by entity framework?

How do I sort the inner collection of an object returned by the entity framework? public class X { ... the current project's requirements. 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 insert BLOB datatype

I'm using the following code to insert into a blob field: MySql.Data.MySqlClient.MySqlConnection conn; MySql.Data. ... "Open value in viewer": 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# - 64-Bit VB.NET Allocating > 2GB of RAM (.NET bug?)

I have a 64 bit VB.NET application and want to allocate a buffer > 2GB in size. In the following code both the " ... * 4) - 1 ReDim buffer(size) 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# - Problem with Generic Linq OrderBy function

I saw the following function in a posting which allows one to order data using a generic expression: public static ... // call orderBy with exp 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# - Opening a Hidden Internet Explorer Window without it getting Focus?

I want to open a hidden Internet Explorer window without it stealing focus. I have a Timer object that opens ... what they are doing. 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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551 views

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c# - Since WebClient's uploadData doesn't encode data, then what will be the effect of adding a "Content-Type", "multipart/form-data" header to it

C#'s uploadData method doesn't encode the data that is being sent. So, if I send a file over (after converting ... that I can convert to bytes) See Question&Answers more detail:os...

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

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450 views

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c# - When you implement two interfaces with the same method, how do you know which one is called?

If you have TheMethod() in interfaces I1 and I2, and the following class class TheClass : I1, I2 { void ... know which interface it is using? 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# - JWT cannot be retrieved by HttpContext.GetTokenAsync in .NET Core 2.1

This one really has me scratching my head as I can create a JWT. I can add an attribute to authorize a ... that just feels like a hack. See Question&Answers more detail:os...

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

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336 views

1 answer

c# - Linq-to-SQL: Combining (OR'ing) multiple "Contains" filters?

I'm having some trouble figuring out the best way to do this, and I would appreciate any help. Basically, I'm setting up a ... ================ 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

1 answer

c# - Differing behavior when starting a thread: ParameterizedThreadStart vs. Anonymous Delegate. Why does it matter?

When I run the code below the output is "DelegateDisplayIt", typically repeated 1-4 times. I've run ... .WriteLine("ParameterizedDisplayIt"); } See Question&Answers more detail:os...

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

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279 views

1 answer

c# - How to retrieve Domain Object from Repositories

I have a little problem understanding repository-domain object relation. Here is some information I know about domain ... will 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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345 views

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c# - Visual Studio 2015 SQL Server Data Tools missing "Add Table" option

I have added a localdb to my project and trying to add tables to it. But I could not see 'Add Table' ... new table. Am I missing 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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690 views

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c# - how to access localDB from Windows Service

I need to use data base locally. I have created database in (LocalDB)v11.0 Server with Visual Studio 2012. ... would be visible only locally? See Question&Answers more detail:os...

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

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459 views

1 answer

c# - Entity Framework - [Keyless] Data Annotation Missing

According with the Microsoft Documentation Here, I should have access to the Attribute for [Keyless] so I can define ... 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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360 views

1 answer

c# - ASP.NET Web Service template not exist?

I have a full installation of Visual Studio 2010 with .Net framework 4. I want create my first web service. but ... How to create a Web Service? See Question&Answers more detail:os...

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

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326 views

1 answer

c# - Apply stroke to textblock in XAML

I have a Silverlight app where I want to give my textblock an outline (not the textblock, the characters ... there an existing implementation? See Question&Answers more detail:os...

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

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