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Opening a folder in explorer and selecting a file
...s of the application you run.
For example:
in CMD:
explorer.exe -p
in C#:
Process.Start("explorer.exe", "-p")
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Check if one IEnumerable contains all elements of another IEnumerable
...
C# 3.5+
Using Enumerable.All<TSource> to determine if all List2 items are contained in List1:
bool hasAll = list2Uris.All(itm2 => list1Uris.Contains(itm2));
This will also work when list1 contains even more than ...
Convert integer to hexadecimal and back again
...gain.
See How to: Convert Between Hexadecimal Strings and Numeric Types (C# Programming Guide) for more information and examples.
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How do I check for nulls in an '==' operator overload without infinite recursion?
...
If you are using C# 7 or later you can use null constant pattern matching:
public static bool operator==(Foo foo1, Foo foo2)
{
if (foo1 is null)
return foo2 is null;
return foo1.Equals(foo2);
}
This gives you slightly neate...
How to delete all files and folders in a directory?
Using C#, how can I delete all files and folders from a directory, but still keep the root directory?
29 Answers
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Login failed for user 'IIS APPPOOL\ASP.NET v4.0'
I have a web project (C# Asp.Net, EF 4, MS SQL 2008 and IIS 7) and I need to migrate it to IIS 7 locally (at the moment works fine with CASSINI).
...
How do you automatically set the focus to a textbox when a web page loads?
...e using the stock page template supplied with visual studio) you can use:
C#
protected void PageLoad(object sender, EventArgs e)
{
Page.SetFocus(txtMyInputBox);
}
VB.NET
Protected Sub PageLoad(sender as Object, e as EventArgs)
Page.SetFocus(txtMyInputBox)
End Sub
(* Note I removed t...
Best way to split string into lines
...\r|\n");
If you want to preserve empty lines, why do you explicitly tell C# to throw them away? (StringSplitOptions parameter) – use StringSplitOptions.None instead.
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How to turn IDENTITY_INSERT on and off using SQL Server 2008?
.... ON stops working after the sending block (for ex.: .ExecuteNonQuery() in C#). I had to put SET IDENTITY_INSERT ... ON; again at the beginning of next SQL command string.
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In C#, how to instantiate a passed generic type inside a method?
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I've been writing C# for years with some heavy generic typing abuse in my days, and I NEVER knew you could define a constraint like this to instantiate a generic type. Many thanks!
– Nicolas Martel
Jan 2 ...