Open source. NET License tool, Easylicense!

Using code:

Easy License is very simple to use, in order to verify a software, you need the following 3 steps.

1:create a public/private Key.

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if  (file.exists ("Privatekey.xml") | | File.exists ("Publickey.xml"))             {                 var result = MessageBox.Show ("The key is existed, override it?",  "Warning", Messageboxbutton.yesno);                 if  (Result = = messageboxresult.no)                 {                      return;                }             }              var privatekey =  "";   &Nbsp;         var publickey =  "";             licensegenerator.generatelicensekey (Out privateKey,  out publickey);              File.writealltext ("Privatekey.xml", Privatekey);             file.writealltext ("Publickey.xml", PublicKey);              messagebox.show ("The Key is created, please backup it.");

　　

2:use private key to create a license

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if  (! File.exists ("Privatekey.xml"))             {                 messagebox.show (" Please create a license key first ");                 return;             }              var  privatekey = file.readalltext (@ "Privatekey.xml");             var generator = new licensegenerator (PrivateKey);               var dictionary =  New dictionary<string, string> ();               // generate the license             var license = generator. Generate ("Easylicense",  guid.newguid (),  datetime.utcnow.addyears (1), dictionary,                 licensetype.standard);                           txtLicense.Text = license;             file.writealltext ("License.lic",  license);

　　

3:use public key to validate the license

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Private static void validatelicense ()         {             if  (! File.exists ("Publickey.xml"))             {                 messagebox.show (" Please create a license key first ");                 return;             }                          var publickey = file.readalltext (@ " Publickey.xml ");              var  Validator = new licensevalidator (Publickey, @ "License.lic");               try            {                 validator. Assertvalidlicense ();            }             catch  (Exception ex)              {                 console.writeline (ex. Message);            }

　　

Easylicense inside there is a tool called Licensetool, you can download the source code, run, see how it is created key, create Licens and verify license.

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And the system also has a demo project that can help you.

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Open source. NET License tool, Easylicense!