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How can we prepend strings with StringBuilder?
...An example is: varStringBuilder.insert(0, "someThing");
It works both for C# and Java
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Why does Math.Round(2.5) return 2 instead of 3?
In C#, the result of Math.Round(2.5) is 2.
15 Answers
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Casting a variable using a Type variable
In C# can I cast a variable of type object to a variable of type T where T is defined in a Type variable?
12 Answers
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How do I properly clean up Excel interop objects?
I'm using the Excel interop in C# ( ApplicationClass ) and have placed the following code in my finally clause:
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How can I format a number into a string with leading zeros?
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See String formatting in C# for some example uses of String.Format
Actually a better example of formatting int
String.Format("{0:00000}", 15); // "00015"
or use String Interpolation:
$"{15:00000}"; // "00015"
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Automatically create an Enum based on values in a database lookup table?
How do I automatically create an enum and subsequently use its values in C# based on values in a database lookup table (using enterprise library data layer)?
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ReSharper Abbreviations List: Where can I modify it?
...nage Abbreviations"
For a specific language
Resharper/Options/Languages/C#/C# Naming Style
Resharper/Options/Languages/VB/VB Naming Style
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How to create and use resources in .NET
... to have those lovely changing icons... How do we do that? Well, lucky us, C# makes this exceedingly easy.
There is a static class called Properties.Resources that gives you access to all your resources, so my code ended up being as simple as:
paused = !paused;
if (paused)
notifyIcon.Icon = Pr...
Test if object implements interface
...s the simplest way of testing if an object implements a given interface in C#? (Answer to this question
in Java )
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Convert string[] to int[] in one line of code using LINQ
...r a = arr.Select((s, i) => int.TryParse(s, out i) ? i : 0).ToArray();
C# 7.0:
var a = Array.ConvertAll(arr, s => int.TryParse(s, out var i) ? i : 0);
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