RegexMaster – Mastering regular expression

When I begin learning regular expression, I tried to find some tools to help me.

I found a couple of tools, it was Komodo regular expression and RegexBuddy. But both of this costs money. I tried to find free tools, but I was failed.

So I decided to create my own.

RegexMaster is a very simple tool, but [...]

Comparing string with variable

If you want to compare some constant string value with variable, you can use this code:

string myString = “hello”;
if(myString.ToUpper() == “HELLO”)
{
// do somthing
}

But in this case you have to check variable to null, because you can have null reference exception in method ToUpper()

string myString = “hello”;
if((null != myString) && (myString.ToUpper() == “HELLO”))
{
// do somthing
}

To avoid [...]