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Posted 7 Nov 2006
Licenced CPOL

Saving Registry Settings

, 7 Nov 2006
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Saving Registry Settings in Visual C#

Application Settings


How to persist application settings in C# by saving them to the registry.


We can make several real world applications with Microsoft Visual C Sharp. An application can hold many settings. Application settings is a common description of an program. But there are no alternative methods in C# to handle application settings.

The System.Configuration.AppSettingsReader class allows to read its properties but it is read only in run time. In Visual Basic, there are two methods GetSetting and SaveSetting which can be used to save settings in registry. But it is not available in C#. This article can be useful for beginners to save application settings.

The Class

The code is very easy. There is only one class for handling settings. You can copy the code, add the code to your project and use it. The name of the class is RegistryHelper.

public class RegistryHelper


The Code

using System;
using Microsoft.Win32;
using System.Windows.Forms;
namespace BDNotePad.Modules
public class RegistryHelper
private static string FormRegKey(string sSect)
return sSect;
public static void SaveSetting(string Section, string Key,string Setting)
string text1 = FormRegKey(Section);
RegistryKey key1 =
if (key1 == null)
key1.SetValue(Key, Setting);
catch (Exception exception1)

public static string GetSetting(string Section, string Key, string Default )
if (Default == null)
Default = "";
string text2 = FormRegKey(Section);
RegistryKey key1 = Application.UserAppDataRegistry.OpenSubKey(text2);
if (key1 != null)
object obj1 = key1.GetValue(Key, Default);
if (obj1 != null)
if (!(obj1 is string))
return null;
return (string) obj1;
return null;
return Default;

Using the Code

The code is very simple and easy to use. In the Load and Closed event of a form, you can use the code.

For example:

protected override void OnLoad(EventArgs e)
    base.OnLoad (e);

    this.Width = Convert.ToInt32(RegistryHelper.GetSetting("Layout","Width",400));

protected override void OnClosed(EventArgs e)
    base.OnClosed (e);



If you find this article useful or if you find any bugs, please let me know. Please send comments to

May God keep you well.


  • 7th November, 2006: Initial post

About the Author

My name is Muhammed Kawser Ahmed. I am from Bangladesh. I am 15 years old and am learning C#. I study in grade 8. I like to share as much knowledge as possible with other people.


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


About the Author

Mohammed Kawser
Bangladesh Bangladesh
I am a student of class 8. My country is in Bangladesh. A interest boy in programming. Age - 15 years old. Email -

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Comments and Discussions

QuestionFormRegKey function Pin
Chuck Claunch9-Dec-13 8:49
memberChuck Claunch9-Dec-13 8:49 
GeneralOnClosed and OnCloseing events don't get called. Pin
jamesdk827-Dec-10 6:34
memberjamesdk827-Dec-10 6:34 
QuestionCompare to VB6' GetSetting, SaveSetting Pin
Sandhya Yamarthi4-Sep-09 10:49
memberSandhya Yamarthi4-Sep-09 10:49 
GeneralThank you! Pin
mycheck18-May-09 0:11
membermycheck18-May-09 0:11 
GeneralGreat code. Thank you ! Pin
Roman Lerman11-Oct-07 9:04
memberRoman Lerman11-Oct-07 9:04 
Generalhi Pin
batlai29-Aug-07 0:22
memberbatlai29-Aug-07 0:22 
GeneralGreat Code Pin
Fakher Halim24-Apr-07 8:16
memberFakher Halim24-Apr-07 8:16 
GeneralThanks for the code Pin
berickson18-Nov-06 12:46
memberberickson18-Nov-06 12:46 
GeneralRe: Thanks for the code Pin
Mohammed Kawser12-Dec-06 5:55
memberMohammed Kawser12-Dec-06 5:55 
QuestionWhy not use a xml-file Pin
André Ziegler7-Nov-06 12:18
memberAndré Ziegler7-Nov-06 12:18 
AnswerRe: Why not use a xml-file Pin
Mohammed Kawser12-Dec-06 5:58
memberMohammed Kawser12-Dec-06 5:58 

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