C # after-school mini-Test 5

1.string Correlation function

I tried the compare substring split function separately, as shown.

The Compare function compares the input to two strings, and then returns an int value to display the result.

SUBSTRING can read a portion of a string (starting index, number of indexes).

Split can split a string according to the given condition.

2. Regular expressions

Consists of metacharacters and literals, which are used to manage strings more conveniently.

For this part of the big study I refer to the http://www.wangqi.com/n9250c53.aspx

3.ecpection

Expection is to deal with predictable but unavoidable problems.

If you find the code snippet that handles exception in the appropriate method,

It will be called to process the exception.

If not found, expand the call stack to the previous layer to find the appropriate exception handler

public class Test

{

public static void Main ()

{

Console.WriteLine ("Enter Main ...");

Test T = new Test ();

T.func1 ();

Console.WriteLine ("Exit Main ...");

}

public void Func1 ()

{

Console.WriteLine ("Enter Func1 ...");

FUNC2 ();

Console.WriteLine ("Exit Func1 ...");

}

public void Func2 ()

{

Console.WriteLine ("Enter Func2 ...");

throw new System.ApplicationException ();

Console.WriteLine ("Exit Func2 ...");

}

}

}

Output:

Enter Main ...

Enter Func1 ...

Enter Func2 ...

It is important to note that if there are multiple exception and there are derivations between them, be sure to arrange the exception in order from special to General D.

C # after-school mini-Test 5