Recent questions tagged C#

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c# - Precision of double after decimal point

In the lunch break we started debating about the precision of the double value type. My colleague thinks, it ... a more qualified statement? 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 tooltip for a ListviewSubItem

I have a ListView control in Details view as that (the view that shows the list as a grid) mListView.View = View ... to make it appear "easly" ? 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 many hash buckets does a .net Dictionary use?

I know that this is an implementation detail, but I'm curious: Is there a bound on the number of hash ... (or is it documented anywhere)? 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 "Equals" method resolution with generics differs from explicit calls

I have the following example: namespace ComparisonExample { class Program { static void Main(string[] args) { var ... type in generic argument? 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 is concatenating SQL strings a bad idea?

I have read that it's a bad idea to concatenate SQL strings like so: cmd.CommandText = "Insert ... practising string concatenation for SQLs? 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 show "success" message on submit?

Using C# with ASP.NET, how do I show a "success" message when my user submits a form? And at the same ... can be viewed by clicking the link? 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# - FilePathResult thrown an OutOfMemoryException with large file

I have this Action in my controller which returns a file to the user. public virtual ActionResult ReturnFile(string ... ) +69 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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c# - Automapper Mapping Multiple Properties to Single Property

I am need help mapping my Domain Object to a ViewModel for use with my C#/MVC App In the FormAnswer Class ... public string Answer{get;set} } 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# - Displaying pdf in WinForms webbrowser control under x64

I have an application that uses the webBrowser control provided by Microsoft to display a pdf to the user. ... the application in x86? 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 Dynamically create textboxes using ASP.NET and then save their values in Database?

I am creating a survey site. I want to add the textboxes dynamically and then get their values in the database. ... help me to solve this issue. 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# - Xml Deserialization - Merging two elements into a single List<T> object

I have an XML document, and using deserialization, is there a way to combine two elements into one object? XML ... XML format is not an option. 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 4.1 / Linq-to-SQL: What is better: using Equals or ==?

We're having a discussion about using Equals or == on an int comparison in a LINQ query. We're using EF4.1 ... (id)).FirstOrDefault(); And why? 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# - Code sample that shows casting to uint is more efficient than range check

So I am looking at this question and the general consensus is that uint cast version is more efficient than ... the optimization does work. 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 get the XMLSerializer to add namespaces to attributes in nested objects?

This is what I get: <ex:test soap:mustUnderstand="1" xmlns:ex="http://www.example.com/namespace"> <ex:A Type=" ... set { _value = value; } } } 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 implement commands to use ancestor methods in WPF?

I have this context menu resource: <ResourceDictionary xmlns="http://schemas.microsoft.com/winfx/2006/xaml/ ... 's HelpExecuted method? 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 convert float to uint by float representation?

In C I will do this to convert float representation of number into DWORD. Take the value from the address and cast the ... I do the same 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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c# - Format number as text in CSV when open in both Excel and Notepad

I received a requirement to save data in CSV file and send it to customers. Customers use both Excel ... ? Greatly appreciate any suggestion! 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# - Access Ribbon Elements Programmatically in XML Ribbon

This seems to have been asked several times on here with no real answer: Accessing Ribbon Controls ... those xml ribbon elements. 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# - Should variable declarations always be placed outside of a loop?

Is it better to declare a variable used in a loop outside of the loop rather then inside? Sometimes I see examples ... buffer, 0, read); } } 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# - Weird result from unchecked(), possible compiler bug?

The following snippet evaluates to zero: int result = unchecked((int)double.MaxValue); Whereas, if you do this: ... like compiler bug to 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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c# - WPF DataGridTextColumn binding doesn't accept decimals

I don't understand what the problem could be. The binding is on a Decimal property. Here is the ... with an UpdateSourceTrigger property set? 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 only Whole Words from a .Contains() statement

I've used .Contains() to find if a sentence contains a specific word however I found something weird: I wanted ... whole words get picked 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# - Enumerable.Concat not working

Below is the code: string[] values = Acode.Split(','); IEnumerable<Test> tst = null; foreach (string a in ... tst. Any help 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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c# - Convert string array to enum on the fly

I am binding an enum to a property grid like this: public enum myEnum { Ethernet, Wireless, Bluetooth } public ... fly using c#? 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# - Pass custom objects to next activity in Xamarin Android

I've got a few custom objects like RootObject and Form that I want to pass on to the next activity. This is ... ); StartActivity(intent); } }; 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# - Passing DataTable to stored procedure as an argument

I have a data table created in C#. DataTable dt = new DataTable(); dt.Columns.Add("Name", typeof(string)); ... any other way of doing 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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c# - How do you force explicit tag closing with Linq XML?

This is the same question as: Explicit Element Closing Tags with System.Xml.Linq Namespace but I use Net 4.0 ... to force explicit closing tag). 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# - Application.Quit() method failing to clear process

I've seen a lot of posts returned from a Google search about this, but none of the solutions referenced ... the application to quit 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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