DLL Registry Control Easier

DX90

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6 Oct 2018CPOL2 min read

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A simple library to control registry easier

Introduction

A simple library to control the registry more easily than using the basic methods proposed by the .NET Framework.

Background

The following DLL simplifies the basic method. A single command per operation and the DLL checks if the key or registry value exists, then applies the command requested and closes the key. The DLL handles errors and logs in a file.

Using the Code

How to correctly delete a SubKey by .NET Framework solution:

VB.NET

Dim Key As RegistryKey
  Key = Registry.LocalMachine.OpenSubKey("SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Test", False)
  If Key Is Nothing Then 'if key exist
      MsgBox("key doesn't exist")
      Exit Sub
  Else
      Key = Registry.LocalMachine.OpenSubKey("SOFTWARE\Microsoft\Windows\CurrentVersion\Run\", True)
      Key.DeleteSubKey("Test")
      Key.Close()
  End If

And by this DLL:

VB.NET

Reg_DeleteSubKey("HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyNewSubKey", "Test")

Points of Interest

If a SubKey or Value doesn't exist, DLL returns "0/False". If an error occurs, a specify messagebox appears.

Example:

VB.NET

Try
     Key.DeleteValue(BV_ValueName, True)
     Return "True"
Catch ex As Exception
     MsgBox(ex.Message & vbNewLine & BV_TreeKeyName & vbNewLine & "BV_DeleteValue", 
            MsgBoxStyle.Critical, "BV_DeleteValue")
     LogInFile(ex.Message & vbNewLine & BV_TreeKeyName & vbNewLine & "BV_DeleteValue")
     Return ex.Message & vbNewLine & BV_TreeKeyName & vbNewLine & "BV_DeleteValue"
End Try

All functions begin with "Reg_". Do not use the following functions:

ValueTypeLong
MasterFunction
ExistKeyOrValue

These three functions are called by the commands "Reg_" or "RegF_".

Precision

The source of the DLL is fully commented in English and French.

The DLL simplifies the most common standard commands. It does not, for example, manage permissions (ACLs). But if you have solutions to improve, do not hesitate to post in the comments or send me a private message.

The operation is very simple, to fully understand, I added a source that uses all functions. For the example in the source, messagebox is used but in standard use, do not use messagebox.

Name of Functions

`Reg_KeyExist`	Function to test, if a `SubKey` exists
`Reg_ValueExist`	Function to test, if a `Value` exists
`Reg_SetOrCreateValue`	Function for create, edit or set a value
`Reg_CreateSubKey`	Function for create a `subkey`
`Reg_GetDataValue`	Function to get the data of a value
`Reg_GetListValueName`	Function to get a `List` (array) of Values
`Reg_GetValueKind`	Function to get the Kind of a `Value`
`Reg_GetSubKeyNames`	Function to get a `List` (array) of `SubKeyName`
`Reg_DeleteValue`	Function to delete a `Value`
`Reg_DeleteSubKey`	Function to delete a `SubKey` recursively or not
`Reg_LittleName`	Function to get the short name of `Tree` (example `HKEY_LOCAL_MACHINE` --> `HKLM`)
`Reg_CopyValue`	Function to copy a Value to another Value by copying its name, data and type If the destination value does not exist, it is created, if it exists, it is replaced)
`RegF_ConvertStringDefaultInBinary / RegF_ConvertStringASCIIInBinary / RegF_ConvertStringUtf8InBinary`	Convert String Utf8/Ascii/Default in Binary Example : Dim InByte As Byte() = RegF_ConvertStringASCIIInBinary(MyStringToConvert))

History

The following is a list of changes available in version 1.4.0.7 of this library.

Bugfix : Possibility to write in root keys
Copy a value to another value
Convert a string to a binary type

License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)