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Dear developers,
I like the type of chm-file for documentation.
I fiddled a while with the ms-help and I understand some principles.
My question is:
How can I automate the creation of "pretty-looking" chm-files?
Best regards
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Hi, I built an application using a TCP/IP connection. Therefore I need an I.P. checker to make sure the given IP is correct. I noticed that when an invalid IP is provided the complier can tell it right away. SO my quesion is if there is a command to check if an IP address is valid. By valid I mean it is less than 255.255.255.255. Or if you happen to have a code that does it i would be greatful.
Thank you in advance 
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Hi,
I haven't tried it myself but I would go for IPAddress.TryParse()
Luc Pattyn [Forum Guidelines] [My Articles]
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You could either ping it (requires internet access), use a regular expression, invoke the IPAddress.TryParse method or split it, and use Byte.TryParse on each of the components
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Thanks, used IPAddress.TryParse() worked fine for me.
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Hi all! 
I was just wondering how I could elevate privelages programmatically using C# as I am trying to download a file from my site and automatically save it to My Documents on my computer but I keep getting an exception and it says access to MyDocuments denied. Does anybody know how to get around this? It happens on both my XP and Vista computers. I don't want to turn off UAC or the equivelant in XP either? I'd appreciate any advice I can get. Thanks in advance.
Jay.
P.S. Incase anybody wants to know how to download files using WebClient, here's the code:
WebClient DownloadClient = new WebClient();
DownloadClient.DownloadFile(StartingPointTextBox.Text, SaveSessionTextBox.Text);
j.t.
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Hi,
you don't need special privileges to write files into your own MyDocuments folder, this works just fine (tested on Vista):
string ff=Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)+@"\folder\";
Directory.CreateDirectory(ff);
File.WriteAllText(ff+"aha.txt", "contents");
Did you get an error in the path, resulting in a non-existing folder/subfolder?
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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Thanks for your reply/code ,
Here's the code that I have. I haven't forgotten any folders (I double checked after reading your message) and I'm completely baffled. I even try saving the file to the Desktop and about 15 other folders lol but it shows the same access denied error on both systems. Weird. I've never had this happen before.
Below, the StartingPointTextBox is where the file's downloaded from, and the SaveSessionTextBox is where it'll be saved to:
DownloadClient.DownloadFile(StartingPointTextBox.Text, SaveSessionTextBox.Text);
In my application, I have a FolderBrowserDialog appear that lets me choose where to save the downloaded file to.
Jay.
j.t.
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Hi Jay,
the code you are showing doesn't tell me anything, since the file path is to be read from a Control.
AFAIK a FolderBrowserDialog returns the path to an existing folder, which is *not* the path of a file inside that folder. You can't overwrite a folder with a file. Try appending some relative file path (such as "aha.txt") and then save.
FWIW: when something fails, make it log its intermediate values; as in Console.WriteLine("filespec="+f);
That often is the fast way to spot what may be wrong.
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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Luc Pattyn,
Thank you so much for your help and code I really appreciate it.
Unfortunatly, I'm a little brain dead tonight as I just figured out that I was telling it to save to a folder, but I wasn't giving it a filename to save as lol.
Regards,
Jay.
j.t.
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Does a C# hashtable key have to be a string or could it be an int?
Cheers, Bruce 
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Hi Bruce,
a Hashtable, and since 2.0 also a generic Dictionary, does not impose limitations on the type of keys and values it takes. The key can be a string, an int, a MenuItem, whatever. It must have a decent hashing function, as documented for Dictionary< TKey, TValue>:
As long as an object is used as a key in the Dictionary< (Of < (TKey, TValue> )> ), it must not change in any way that affects its hash value. Every key in a Dictionary< (Of < (TKey, TValue> )> ) must be unique according to the dictionary's equality comparer. A key cannot be nullNothingnullptra null reference (Nothing in Visual Basic), but a value can be, if the value type TValue is a reference type.
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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So if I make it an int for example do I have to overide any hashing functions? In my ap the key would be a uint32 and the value an int.
Cheers, Bruce 
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Bruce Coward wrote: So if I make it an int for example do I have to overide any hashing functions?
No, you don't have to. You could also consider using a generic dictionary instead of HashTable.
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how can i get IO read/write bytes for each running process
(like IO columns in windows task manager) using API in c#?
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Hi,
the PerformanceCounter class wraps Windows performance counters, which can provide that kind of information.
BTW: most often you need to call a counter twice, once to get it started, once again to read its value after some time has elapsed.
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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I've also found this to be the case. Any idea where you need to call twice?
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I imagine that if all counters where running (at least at this level) your computer will be counting performance instead of doing what it is suppose to do
Natza Mitzi
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I had made an application using Microsoft Visual C# 2008 Express Edition such that I had obtained obtained a "dll".
If I register the dll using Visual Studio 2008 Command Prompt, it works perfectly, but, If I register using windows command prompt, the dll gets registered, but that effects had not been made. are there any issues in registering the Express Edition's DLL through normal command prompt.
If there are any, let me know?
I want this to be made because my application should work perfectly eventhough if .Net framework is not present also.
Plz help...
As windows command prompt does not execute "regasm" commmand, I was Intially including "Regasm.exe" in the environment variable's path variable, such that my dll gets registered through the instruction regasm /codebase "Mydll.dll" through windows command prompt.
It gets successfully registered, but it doesn't show any effect what it is really meant for?
How can I achieve this
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Hi,
in order to run a .NET application the right .NET version must have been installed; Microsoft makes all .NET Redistributables available for free (and Vista has them installed already).
There is no easy and free way to run a .NET app without .NET itself being present; copying and registering some DLL files will not solve that.
FWIW: you don't need Visual Studio to run a .NET app
Luc Pattyn [Forum Guidelines] [My Articles]
- before you ask a question here, search CodeProject, then Google
- the quality and detail of your question reflects on the effectiveness of the help you are likely to get
- use the code block button (PRE tags) to preserve formatting when showing multi-line code snippets
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Hi All
I am developing a windows based application using C# Language in which security is very important.
I have used restricted access modifiers such as private,sealed,protected internal etc etc.
And also denied permissions to my application at assembly level(in AssemblyInfo.cs)
such as for File input output
[assembly:FileIOPermission(SecurityAction.RequestRefuse,Unrestricted=false)]
and for everything which was not needed in my application for eg registry,IsolatedStorage etc etc.
I have also strong named my assembly.
I came to know from somebody on the internet that still my code is accessible to other application
and any application by using System.Reflection can execute the code of my application.
Is it true?
If yes What should I do to prevent it.?
And please tell other things also which I can do to increase security of my application.
Please guide.
Thanks
Regards
THE SK
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