Using the String Split recipe With an Array to Validate Data

Black Codes - Using the String Split recipe With an Array to Validate Data

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Sometimes you need to get portions of a string. By breaking it apart using a split method, we can find portions of the string. This can be done using a part of the string as the delimiter.

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The string class library of .Net gives developers numerous tools at their disposal when working with strings. The split method is a great way to validate data entry for required facts (@, (), etc...) as well as development sure the user didn't enter invalid data.

In this example, we are using the split() method to check for valid email addresses. Let's take a look at this easy piece of code that uses an array and the string split() method to get the values.

First, avow two variables. One holds the value to be checked and the other is the array that will hold the split results of the first value:

Why an array? Because the personel word will be broken apart with each alpha, numeric, or character value being held in it's own space holder in the array. For instance, the sentence "Black Cat", when split into an array will look something like this:

strWord = "Black Cat"; strSplit = strWord.Split(' '); In this case, the string value of "Black Cat" is split on the space character leaving us with an array with 2 items. strSplit[0] = "Black" and strSplit[1] = "Cat"

Here is the code to check for valid email address components.

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