Recent questions tagged C#

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c# - Many to Many Mapping Using Data Annotations

[Table("UserMaster")] public class UserMaster { public UserMaster() { this.Roles = new List<Role>(); } [Key] ... we do the mapping thing also? 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# - Getting System.Data.DataRowView while getting value from ComboBox

I'm trying to get data from database according to the item selected in the ComboBox but when I try to access ... me what might be the problem? 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 add prerequisites to a ClickOnce application?

I want to add prerequisites to my Click Once application. Here is the problem. The program is in a server and ... Forms and .NET Framework 4.0 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# - Asp.Net Core Web API 2.2 Controller not returning complete JSON

I have a Web API Controller in my Asp.Net Core Web API 2.2 project. Messageboard model: public class ... of MessageBoards and child Messages? 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# - DataTable Compute Value is too large or too small for type Int32

I recently came across a way to evaluate expression in C#, using the compute method of a datatable object. Here is ... A little hand on 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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802 views

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c# - Math.Round with negative parameter

ALL, I am trying to convert Borland C++ code to C#. In the old code I see the following: double a = RoundTo( b ... .Round( b, 2 ); 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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c# - Inconsistent Results with RichTextBox ScrollToCaret

I am working with a RichTextBox in C#. It exists on a TabPage. When the TabPage is selected, I aim to ... the lines of itsmatt's 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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c# - Service not fully stopped after ServiceController.Stop()

ServiceController serviceController = new ServiceController(someService); serviceController.Stop(); serviceController.WaitForStopped( ... 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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c# - Placing custom code in a System namespace

Are there any best-practices that state custom code shouldn't be placed in a System namespace? Should System and ... it deals with P/Invoke). See Question&Answers more detail:os...

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

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713 views

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c# - Select XElement where child element has a value

Given the following XML: <platforms> <platform> <id>1</id> <price>2.99</price> </platform> </platforms> ... platform" element rather than "id". 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 string to variable name

I have an XML file, I have a node and I read all ChildNodes. The name of the childNode match to a ... .SetValue(field, item.InnerText); } 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# - Don't understand why we're getting error CS0234

We're working on a WPF project using Visual Studio 2015. We've got a folder in the project named Assets. It ... that same folder in the project? See Question&Answers more detail:os...

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

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519 views

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c# - Using Multiple MvcSiteMaps

I've recently hit a road block trying to use the MvcSiteMapProvider. In my application, I have three ... the right provider dynamically. See Question&Answers more detail:os...

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

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675 views

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c# - Accepted way to prevent "The remote host closed the connection" exception

I'm constantly getting the following exception which is caused by a user initiating a download and it consequently ... filling up my mailbox? See Question&Answers more detail:os...

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

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780 views

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c# - Use of unassigned local variable on finally block

When could i in this example be unassigned? int i; try { i = 2; } catch { i = 3; } finally { string a = i.ToString(); } 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# - Calling asp.net page method from javascript not working

Hi I am calling a simple page method from javascript , here is my code at markup function OnCallSumComplete( ... anything? Thanks for 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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535 views

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c# - How to test logic which is dependent on current date

I have this method which is dependent on current date. It checks if today is Sun, Mon, Tue or Wed, then ... this which depends on todays date? See Question&Answers more detail:os...

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

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907 views

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c# - DataSource error: "Cannot Bind to property or Column"

I'm working on a database in C# when I hit the display button I get an error: Error: Cannot bind to the ... two lines it will display properly. See Question&Answers more detail:os...

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

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780 views

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c# - Does Interlocked provide visibility in all threads?

Suppose I have a variable "counter", and there are several threads accessing and setting the value of "counter" by ... a ref or out parameter". See Question&Answers more detail:os...

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

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743 views

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c# - String Fraction to Double

I need a function to parse a user inputs of numbers to doubles. I cannot do anything client side or change how ... spend time to write my own. See Question&Answers more detail:os...

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

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557 views

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c# - DataGrid Row Background Based On Cell Value

I am currently working on a C# WPF datagrid. I have a DataGrid which has auto generated columns and the code ... for any help you can 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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593 views

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c# - Dotless - Can't reference less variable in separate file with MVC Bundling

I hope I'm not creating a duplicate topic, but I've been searching for two days and can't find ... forum/?fromgroups#!topic/dotless/j-8OP1dNjUY See Question&Answers more detail:os...

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

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670 views

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c# - How can I get an actual EventHandler delegate instance from an event in VB.NET?

In C#, I could do something like this: EventHandler handler = this.SomeEvent; ...which would allow me to, ... but that seems pretty ridiculous. 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# - Iterating through a list of lists?

I have Items from a certain source (populated from somewhere else): public class ItemsFromSource{ public ItemsFromSource(string ... with i } } See Question&Answers more detail:os...

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

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667 views

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c# - NullReferenceException, no stack trace... where to start?

I have a WPF audio application. Occasionally (and even in the debugger) I'm seeing a NullReferenceException which ... seen this before? 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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781 views

1 answer

c# - Client found response content type of 'text/html', but expected 'text/xml'

I am getting this error: Client found response content type of 'text/html', but expected 'text/xml. I am adding ... me... 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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529 views

1 answer

c# - Multiple collections of same type in entity framework

I have these two very simple classes. public class Person { public int Id { get; set; } public string ... distinguish between them. 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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919 views

1 answer

c# - Return IAsyncEnumerable from an async method

Take the following the methods: public async IAsyncEnumerable<int> Foo() { await SomeAsyncMethod(); return Bar(); ... to achieve 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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