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This article mainly shows you "how to create a CAPTCHA in C #", which is easy to understand and well organized. I hope it can help you solve your doubts. Let me lead you to study and learn the article "how to create CAPTCHA in C#".

To finish creating the CAPTCHA in C #, first create a CLASS class, and then add System.Drawing (the drawing class) in an add Reference way.

The code for creating the verification code in C # is as follows:

/ * /

/ define the random characters displayed

/ / /

/ / /

/ / /

PrivatestringimageStr (char [] strList)

... {

If (strList==null)

StrList= "1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ" .ToCharArray ()

IntcodeLengh=4

StringradomCode= ""

Randomr=newRandom ()

For (inti=0;i

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