How to read value of a registry key c

Question

At start up of my application I am trying to see if the user has a specific version of a software installed  specifically the MySQL connector  all using c   In the registry  the MySQL contains a version entry  So what I am trying to accomplish is this    My app starts up  Somewhere in the start up code I need to do the following things in order  Check to see if the user has the MySQL connector installed  which is located at        HKEY LOCAL MACHINE SOFTWARE Wow6432Node MySQL AB MySQL Connector Net   If the user has the connector installed  I wanted to check what version they have  which is stored as Name    Version  and Data   x x x  Picture below   Now if the user has a specific version installed  then I will execute other code  which is where I can take from   What would be the best way of going about this     EDIT  Below is the code I currently have and I am getting an error on line 19  It is commented   My error says  error CS1001  Identifier Expected  I wasnt able to figure out what that means  Any help   using System  using Microsoft Win32  using System Data   public class regTest       public static void Main                 try                       RegistryKey key   Registry LocalMachine OpenSubKey  Software  Wow6432Node  MySQL AB  MySQL Connector  Net                if  key    null                                Object o   key GetValue  Version                    if  o    null                                        Version version   new Version o as String       as  because it s REG SZ   otherwise ToString   might be safe r                      Version broken   new Version  6 7 4                        if  version Equals  broken     This is where the error is occuring                                               DataSet dataSet   ConfigurationManager GetSection  system data   as ystem Data DataSet                           DataView vi   dataSet Tables 0  DefaultView                          vi Sort    Name                           if  vi Find  MySql      -1                                                        dataSet Tables 0  Rows Add  MySql                                     MySql Data MySqlClient                                     MySql Data MySqlClient                                                                    typeof MySql Data MySqlClient MySqlClientFactory  AssemblyQualifiedName                                                                                                        catch  Exception ex     just for demonstration   it s always best to handle specific exceptions                          react appropriately

User · Answer

Change   using  RegistryKey key   Registry LocalMachine OpenSubKey  Software  Wow6432Node  MySQL AB  MySQL Connector  Net      To    using  RegistryKey key   Registry LocalMachine OpenSubKey  Software Wow6432Node MySQL AB MySQL Connector Net

User · Answer

You need to first add using Microsoft Win32  to your code page   Then you can begin to use the Registry classes   try       using  RegistryKey key   Registry LocalMachine OpenSubKey  Software  Wow6432Node  MySQL AB  MySQL Connector  Net                  if  key    null                        Object o   key GetValue  Version                if  o    null                                Version version   new Version o as String       as  because it s REG SZ   otherwise ToString   might be safe r                    do what you like with version                                 catch  Exception ex     just for demonstration   it s always best to handle specific exceptions         react appropriately     BEWARE   unless you have administrator access  you are unlikely to be able to do much in LOCAL MACHINE   Sometimes even reading values can be a suspect operation without admin rights

[c#] How to read value of a registry key c#

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