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How do I import a namespace in Razor View Page?
...nse doesn't hint to add the using statement the same way it does in normal C# pages.
– Triynko
Sep 4 '15 at 22:15
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show 3 more comments
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Type Checking: typeof, GetType, or is?
...s Foo)
Foo foo = (Foo)obj;
requires two.
Update (Jan 2020):
As of C# 7+, you can now cast inline, so the 'is' approach can now be done in one cast as well.
Example:
if(obj is Foo newLocalFoo)
{
// For example, you can now reference 'newLocalFoo' in this local scope
Console.WriteL...
What is the tilde (~) in the enum definition?
I'm always surprised that even after using C# for all this time now, I still manage to find things I didn't know about...
1...
A field initializer cannot reference the nonstatic field, method, or property
...
No, the compiler cannot rearrange the initializers. The C# Language Specification states, under the section "10.5.5.2 Instance field initialization", the following: The variable initializers are executed in the textual order in which they appear in the class declaration. This is e...
How to create a simple proxy in C#?
...
I have recently written a light weight proxy in c# .net using TcpListener and TcpClient.
https://github.com/titanium007/Titanium-Web-Proxy
It supports secure HTTP the correct way, client machine needs to trust root certificate used by the proxy. Also supports WebSockets ...
How to have an auto incrementing version number (Visual Studio)? [duplicate]
...Version and AssemblyFileVersion attributes:
<#@ template language="C#" #>
//
// This code was generated by a tool. Any changes made manually will be lost
// the next time this code is regenerated.
//
using System.Reflection;
[assembly: AssemblyVersion("1.0.1.<#= this.RevisionNumber...
Prompt Dialog in Windows Forms
...
Add reference to Microsoft.VisualBasic and use this into your C# code:
string input = Microsoft.VisualBasic.Interaction.InputBox("Prompt",
"Title",
"Default",
0,
0);
To add the refernce: r...
FirstOrDefault: Default value other than null
...; set;}
}
void Main()
{
var list = new List<Foo>();
//before C# 6.0
string barCSharp5 = list.DefaultIfEmpty(new Foo()).FirstOrDefault().Bar;
//C# 6.0 or later
var barCSharp6 = list.FirstOrDefault()?.Bar;
}
For C# 6.0 or later:
Use ?. or ?[ to test if is null before perfo...
Java Interfaces/Implementation naming convention [duplicate]
...IService and Service for a single implementation which is really common in c# stackoverflow.com/questions/681700/interface-naming-convention
– amdev
Jan 21 '19 at 21:11
...
List passed by ref - help me explain this behaviour
...ect created on heap. The variable myList is a
reference to that object.
In C# you never pass objects, you pass their references by value.
When you access the list object via the passed reference in
ChangeList (while sorting, for example) the original list is changed.
The assignment on the ChangeList...