Comments on: A Registry Viewer in C#

By: Jan

Jan — Sat, 04 Jul 2009 14:02:10 +0000

Thanks for the article.

If have made a view changes to get to all levels.

private void UpdateTree()
{
TreeNode currentUserNode = new TreeNode(Registry.CurrentUser.Name, 0, 1);
string[] currentUserSubKeys = Registry.CurrentUser.GetSubKeyNames();

this.ReadRegistry(currentUserNode, “”, currentUserSubKeys);

registryTreeView.Nodes.Add(currentUserNode);
}

private void ReadRegistry(TreeNode Node, string Key, string[] SubKeys)
{
string TotaalPad = Key;
if (TotaalPad.Length > 0)
TotaalPad += @”\”;

foreach (string key in SubKeys)
{
//get a list of the next level sub keys and their values
TreeNode node = new TreeNode(key, 0, 1);
string[] subKeys = new string[0];
try
{
subKeys = Registry.CurrentUser.OpenSubKey(TotaalPad + key).GetSubKeyNames();
}
catch
{
}

if (subKeys.Length > 0)
{
this.label1.Text = TotaalPad + key + ” subKeys: ” + subKeys.Length.ToString();
this.label1.Update();

this.ReadRegistry(node, TotaalPad + key, subKeys);
}

try
{
GetValuesAndData(Registry.CurrentUser.OpenSubKey(TotaalPad + key), node);
}
catch
{
}

node.Name = node.Text;

Node.Nodes.Add(node);
}
}

By: Amgad Suliman

Amgad Suliman — Wed, 29 Apr 2009 07:35:21 +0000

Ryan I think this would do the trick:

RegistryKey demoKey = Registry.CurrentUser.OpenSubKey(“CodeHill”);
demoKey.SetValue(“TestValue”, 0, RegistryValueKind.DWord);

By: Ryan

Ryan — Tue, 28 Apr 2009 13:25:52 +0000

Iv got my code working after a few hours of tinkering i found that when i set the (default) to “” it doesn’t change it truly to null. if you look in the binary it has some zeros in there when its truly null it says (value not set) in the data field and if you check the binary it will only have 0000 so my question is how would you delete or set the default values data to (value not set ) making it null?

thank you for your time really appreciate it.
-Summey

By: Amgad Suliman

Amgad Suliman — Tue, 28 Apr 2009 04:32:53 +0000

Hi Ryan, a value in registry terms means the variable name. And the default values in a registry key are the ones without names. I checked for default variables in the function GetValuesAndData using the following code:

//Display the data of the value. The conditional operatore is
//needed because the default value has no name
node.Nodes.Add(value, (value == “” ? “Default” : value) + “: ” + stringData, 2, 2);

This just displays the word Default when the value has no name. I hope this answered your question.

By: Ryan

Ryan — Mon, 27 Apr 2009 18:30:18 +0000

How would i check to see if the data is in a default value?

if default value dosnt have any data ok if not would you like to remove it.

http://www.summeylabs.com/images/reg.jpg

thats what im trying to check

my if statement dosnt work if i have data in that value it still say its empty etc…

thank you for your time.
below is my code.

static void Main(string[] args)
{

RegistryKey MyReg = Registry.LocalMachine.OpenSubKey
(“SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\App Paths\\setup.exe”, true);

string IsVal = (string)MyReg.GetValue(“Default”,”");

if (MyReg.GetValue(IsVal) != null)
{
Console.WriteLine(“empty”);

MyReg.Flush();

MyReg.Close();

}

else

{

Console.WriteLine(MyReg.GetValue(IsVal).ToString());
Console.WriteLine(“removing value now”);

MyReg.SetValue(“”,”DefaultValue”);
MyReg.Flush();
MyReg.Close();

}

By: DotNetShoutout

DotNetShoutout — Sun, 29 Mar 2009 19:27:15 +0000

A Registry Viewer in C# | CodeHill…

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