how to add regisstry entry programatically

Question

hi,

i want add a registry entry programatically using my application...
I mean if registry entry is not there when application starts running... then my application should add that registry...

Then whenevr i want i should be able to get and set the value of that registry programatically in my application....

How i can do it...?

Thanks in advance...
IamHuM

Answer 1

Look at the docs for the Registry class, there are examples there that will show you how it's done..

Answer 2

Below is a demo project.
The value of Slider is stored in RegistryKey table and can be loaded.

XAML

<Window x:Class="_temple.Window1"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    Title="Window1" Height="300" Width="300">
    <Grid>
        <Slider Loaded="TaskBarPreviewSetting_Loaded" Name="TaskBarPreviewSetting"  Minimum="100" Maximum="400"  ValueChanged="Slider_ValueChanged" ></Slider>
        
    </Grid>
</Window>

C#

using System;
using System.Windows;
using Microsoft.Win32;
namespace _temple
{
    /// <summary>
    /// Interaction logic for Window1.xaml
    /// </summary>
    public partial class Window1 : Window
    {
        public bool BeLoaded = false;
        public Window1()
        {
            InitializeComponent();
        }
        private void Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {
            if (BeLoaded)
            {
                string TaskBarPreviewValue = TaskBarPreviewSetting.Value.ToString("0");
                RegistryKey regKeyAppRoot = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\RWD\\Settings");
                regKeyAppRoot.SetValue("TaskbarPreviewSetting", TaskBarPreviewValue, RegistryValueKind.String);
            }
        }
        private void TaskBarPreviewSetting_Loaded(object sender, RoutedEventArgs e)
        {
            BeLoaded = true;
            RegistryKey regKeyAppRoot = Registry.CurrentUser.CreateSubKey("Software\\Microsoft\\Windows\\CurrentVersion\\Uninstall\\RWD\\Settings");
            if (regKeyAppRoot != null)
            {
                string data = regKeyAppRoot.GetValue("TaskbarPreviewSetting", 400).ToString();
                double value = Convert.ToDouble(data);
                TaskBarPreviewSetting.Value = value;
            }
        }
    }
}

Answer 3

Hi,
  You can read the registry value like the following.
         Registry.GetValue(@"HKEY_CURRENT_USER\Software\YourApp\Settings", "yourVariable", "valueToGet");
  For setting the value use it like following.
         Registry.SetValue(@"HKEY_CURRENT_USER\Software\YourApp\Settings", "yourVariable", "valueToBeSaved");
   It will create the entry if the entry is not there.

---

-- Thanks Ajith R

Answer 4

hi,

Thanks for the replies...

One thing i didnt understood is what is the difference between using 'regKeyAppRoot.SetValue' and 'Registry.SetValue'...?



Regards,
IamHuM

Answer 5

The Registry class exposes RegistryKey objects. Registry.SetValue() is a static way of doing the same thing with an instance of RegistryKey --- regKeyAppRoot.SetValue(). You are simply accomplishing the same thing either way you look at it, in this case. If you needed to set a large number of values, the instance method might give better performance than the static method.

-Scosby