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How do I make a textbox that only accepts numbers?
...am assuming from context and the tags you used that you are writing a .NET C# app. In this case, you can subscribe to the text changed event, and validate each key stroke.
private void textBox1_TextChanged(object sender, EventArgs e)
{
if (System.Text.RegularExpressions.Regex.IsMatch(textBox1.T...
Linq: GroupBy, Sum and Count
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How can I save application settings in a Windows Forms application?
...ill be read-only.
Reference: How To: Write User Settings at Run Time with C# - Microsoft Docs
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Best way to convert IList or IEnumerable to Array
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How does BitLocker affect performance? [closed]
I'm an ASP.NET / C# developer. I use VS2010 all the time. I am thinking of enabling BitLocker on my laptop to protect the contents, but I am concerned about performance degradation. Developers who use IDEs like Visual Studio are working on lots and lots of files at once. More than the usual office w...
Runtime vs. Compile time
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(edit: the following applies to C# and similar, strongly-typed programming languages. I'm not sure if this helps you).
For example, the following error will be detected by the compiler (at compile time) before you run a program and will result in a compila...
Does Java support default parameter values?
... I fail to see how parameter defaults prevent function overloading. C# for instance allows overrides and also allows for default initializes. Seems like arbitrary choice, not restriction is the reason.
– FlavorScape
Nov 30 '13 at 17:43
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Why can't overriding methods throw exceptions broader than the overridden method?
...sage of exception handling. In fact, other computer languages don't do it (C#).
Moreover, a method is overriden in a more specialiced subclass so that it is more complex and, for this reason, more probable to throwing new exceptions.
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What is the use for IHttpHandler.IsReusable?
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Difference between onStart() and onResume()
...ed to iOS and even WP7... Ive been making a game that runs on all three in C# and I have to say i'm rly disappointed with Google and Android. They seem to be lacking in the Language / API design department. I rly hope some other linux phone OS takes over, cuz I do vote for Open Source in general.....