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What is boxing and unboxing and what are the trade offs?
...generic collections can't contain unboxed values. Generic collections in .NET can hold unboxed values with no penalties. Where Java's generics are only used for compile-time type checking, .NET will generate specific classes for each generic type instantiated at run time.
Java and Haskell have un...
How can I make a ComboBox non-editable in .NET?
...
To continue displaying data in the input after selecting, do so:
VB.NET
Private Sub ComboBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles ComboBox1.KeyPress
e.Handled = True
End Sub
C#
Private void ComboBox1_KeyPress(object sender, KeyPre...
Best way to resolve file path too long exception
..."? Is it web.config or something else? I have this problem on Web Page asp.net project
– Ondra Starenko
Dec 3 '19 at 12:02
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C# code to validate email address
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bool IsValidEmail(string email)
{
try {
var addr = new System.Net.Mail.MailAddress(email);
return addr.Address == email;
}
catch {
return false;
}
}
To clarify, the question is asking whether a particular string is a valid representation of an e-mail addres...
LINQ Select Distinct with Anonymous Types
...t might be worth petitioning MS to introduce the "key" syntax into C# that VB has (where you can specify certain properties of an anonymous type to be the 'primary key' - see the blog post I linked to).
– Matt Hamilton
Feb 12 '09 at 22:32
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Why use the 'ref' keyword when passing an object?
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Well I encountered the issue while upgrading VB6 into .Net C# code. There are function/method signatures that take ref, out and plain parameters. So how can we better distinguish the difference between a plain param vs a ref?
– bonCodigo
Mar...
How to use transactions with dapper.net?
...ke to run multiple insert statements on multiple tables. I am using dapper.net. I don't see any way to handle transactions with dapper.net.
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How to get the month name in C#?
...rite a huge switch statement or if statement on the month int . In VB.Net you can use MonthName() , but what about C#?
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Getting full URL of action in ASP.NET MVC [duplicate]
...st.Url.Scheme)'>this link</a>
and post it anywhere on the internet!
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Why catch and rethrow an exception in C#?
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C# (before C# 6) doesn't support CIL "filtered exceptions", which VB does, so in C# 1-5 one reason for re-throwing an exception is that you don't have enough information at the time of catch() to determine whether you wanted to actually catch the exception.
For example, in VB you can do
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