C# Discussion Boards - CodeProject

Re: How to load an seembly in new Appdomain

Eddy Vluggen20-Aug-09 4:30

Eddy Vluggen

20-Aug-09 4:30

I'm (re-) using a snippet from PIEBALDConsult, works like a charm;

name = System.IO.Path.GetFileNameWithoutExtension ( Filename ) ;

/*\
|*| This is the common way to load an assembly:
|*| assm = System.Reflection.Assembly.LoadFrom ( Filename ) ;
|*|
|*| The following is my take on a technique suggested by Sacha Barber:
\*/

assm = System.AppDomain.CreateDomain ( name ).
    Load ( System.IO.File.ReadAllBytes ( Filename ) ) ;

I are Troll Smile | :)

Re: How to load an seembly in new Appdomain

jpk42020-Aug-09 4:48

jpk420

20-Aug-09 4:48

file namse should include path too ???

Re: How to load an seembly in new Appdomain

jpk42020-Aug-09 4:49

jpk420

20-Aug-09 4:49

I triend with complete path but it is saying couldn not find the file

Re: How to load an seembly in new Appdomain

Eddy Vluggen20-Aug-09 5:07

Eddy Vluggen

20-Aug-09 5:07

How does "Filename" look just before executing the ReadAllBytes when you put a watch on it?

BTW, this isn't a "beginners" topic, but rather somewhat "advanced" Smile | :)

I are Troll Smile | :)

Re: How to load an seembly in new Appdomain

PIEBALDconsult20-Aug-09 8:03

PIEBALDconsult

20-Aug-09 8:03

Basically, the Assembly has to be in the same directory as the executing application.
Apparently you can load an Assembly from a different directory, but you have to set the AppDomains (both the current one and the new one) up properly to do that and I haven't bothered to do that.

See here[^] and here[^].

& in binary numbers !

Mohammad Dayyan20-Aug-09 3:32

Mohammad Dayyan

20-Aug-09 3:32

Hi.
I have two binary numbers : 01100011 and 01101000
I wanna exert a logical and on them in C#.

  01100011
& 01101000
------------
  01100000

Could you please guide me , how I can do it ?
Thanks.

Re: & in binary numbers !

DaveyM6920-Aug-09 3:43

DaveyM69

20-Aug-09 3:43

string bin1 = "01100011";
string bin2 = "01101000";
int int1 = Convert.ToInt32(bin1, 2);
int int2 = Convert.ToInt32(bin2, 2);
byte result = (byte)(int1 & int2);
string binaryResult = Convert.ToString(result, 2).PadLeft(8, '0');

Dave
BTW, in software, hope and pray is not a viable strategy. (Luc Pattyn)
Visual Basic is not used by normal people so we're not covering it here. (Uncyclopedia)
Why are you using VB6? Do you hate yourself? (Christian Graus)

Re: & in binary numbers !

Mohammad Dayyan20-Aug-09 3:48

Mohammad Dayyan

20-Aug-09 3:48

What does PadLeft do ?

Re: & in binary numbers !

DaveyM6920-Aug-09 3:49

DaveyM69

20-Aug-09 3:49

inserts the leading zeros if required.

Re: & in binary numbers !

0x3c020-Aug-09 4:09

0x3c0

20-Aug-09 4:09

Just beat me to it! Laugh | :laugh:

Between the motion
And the act
Falls the Shadow

Re: & in binary numbers !

0x3c020-Aug-09 3:50

0x3c0

20-Aug-09 3:50

It pads the input string with [second parameter] until the length is [first parameter].

Between the motion
And the act
Falls the Shadow

Re: & in binary numbers !

Luc Pattyn20-Aug-09 5:28

Luc Pattyn

20-Aug-09 5:28

Mohammad Dayyan wrote:
What does PadLeft do ?

what the word says: padding at the left
and what the documentation says: see Google, MSDN.

Confused | :confused:

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The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
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Re: & in binary numbers !

Keith Barrow20-Aug-09 3:47

Keith Barrow

20-Aug-09 3:47

I don't think there are any binary literals in c# ( though there are Hex literals e.g. 0x2A). If you must use a binary input the following snippet migh be helpful

const int Base = 2;
 
/To Integer From Binary
int integer = Convert.ToInt32("111", Base);

//To Binary from Integer for output
string binary = Convert.ToString(startVal, Base);

You can can peform the bitwise and against the ints:

int i = 42;
int j = 42;

int k = i & j;

Synchronization between online and offline database. [modified]

Member 399406320-Aug-09 3:19

Member 3994063

20-Aug-09 3:19

I have created a desktop application using c#.Online version has been made using PHP.My requirement is to synchronize the data with the online version when "Synchronize" button will click from Offline application.Below is the database details:
Offline version database :SQL server 2005
Online version database :MYSQL
database field name is same for both the application.
Can anyone help me how i can do it..Thanks inadvance

Anup Roy
.NET Developer
India

modified on Thursday, August 20, 2009 9:28 AM

Re: Synchronization between online and offline database. [modified]

Saksida Bojan20-Aug-09 7:40

Saksida Bojan

20-Aug-09 7:40

I Can think of only one whay. (I don't think .NET has classes that will do automaticly)

Each table shoud hold TimeStamp of lastChange column.
Additional tabel with ID, IDofDeletedItems, When (This table can be used to sychronize of removing rows)

With this approach, there coud be conflics (Expect one-way synchronization) but avoiding download massive database

modified on Thursday, August 20, 2009 1:53 PM

Re: Synchronization between online and offline database. [modified]

Verma Ankit2-Apr-10 2:21

Verma Ankit

2-Apr-10 2:21

try http://blog.ankitverma.com/2010/03/onlineoffline-database-synchronization/[^]

modified on Monday, January 17, 2011 4:54 AM

MethodInfo - Get summary - How can i get the methods summary from a method ?

bonzaiholding20-Aug-09 2:50

bonzaiholding

20-Aug-09 2:50

How can i get the summary info of function by MethodInfo ?

If i have inside of class A function that will look like this :

/// <summary>
        /// This Function check if the number is bigger then 10
        /// </summary>
        /// <param name="num"></param>
        /// <returns></returns>
        public bool CheckItFunc(int num)
        {
            return num > 10;
        }

I can get Method info by this line :

System.Reflection.MethodInfo mi = typeof(Class A).GetMethod("CheckItFunc");

I can get the name of the function by mi.Name for example and i can find a paramather list and more.
I there any way to get the summary of a function in runtime?

(in this case get the string: " This Function check if the number is bigger then 10") ??

Thanks for all of your answers.

modified on Thursday, August 20, 2009 9:11 AM

Re: MethodInfo - Get summary - How can i get the methods summary from a method ?

Luc Pattyn20-Aug-09 3:25

Luc Pattyn

20-Aug-09 3:25

The structured comments aren't stored in the executable, if anywhere they are in separate XML files. so you won't get them with reflection. And they don't normally become part of the distribution either.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

Re: MethodInfo - Get summary - How can i get the methods summary from a method ?

bonzaiholding20-Aug-09 3:39

bonzaiholding

20-Aug-09 3:39

Thanks for your answer.

I solved the problem in this way:

1. I create New Attribute(MyAttribute) that contain string called "MyFunctionTextHeader".

2. Every method have an MyAttribute :

[MyAttribute("My function description)")]
       public bool MyFunc(int num)
       {
           ....
       }

3. when i have "MethodInfo" name mi i write this line:

string TextHeader = ((MyAttribute)mi.GetCustomAttributes(typeof(MyAttribute), false)[0]).MyFunctionTextHeader;

and that solve my problem.

Error while reading the Private Key as XML String in C#

Jadhav Ajay20-Aug-09 2:11

Jadhav Ajay

20-Aug-09 2:11

My C# web application is trying to read the Private Key of the our own digital certificate installed on Windows 2008 Server, when it needs to decrypt the data received from the web request.

Following is the C# code:

X509Certificate2 cert = GetCert(thumbPrintOfPrivKey, StoreName.My, StoreLocation.CurrentUser);

try
{
  string privateKey = cert.PrivateKey.ToXmlString(true);

  log.Info("Retrieved Private Key....");
  rsacsp.FromXmlString(privateKey);
}
catch
 (Exception e)
{
  string msg = "Unable to Read the Private Key: ";
  log.Error(msg + e.Message);
  throw new Exception(msg, e);
}

And following line of above-mentioned code throws an error.

string privateKey = cert.PrivateKey.ToXmlString(true);

The error which I get is: - "The system cannot find the file specified."
And following is the stack Trace:

at System.Security.Cryptography.Utils.CreateProvHandle(CspParameters parameters, Boolean randomKeyContainer)
   at System.Security.Cryptography.Utils.GetKeyPairHelper(CspAlgorithmType keyType, CspParameters parameters, Boolean randomKeyContainer, Int32 dwKeySize, SafeProvHandle& safeProvHandle, SafeKeyHandle& safeKeyHandle)
   at System.Security.Cryptography.RSACryptoServiceProvider.GetKeyPair()
   at System.Security.Cryptography.RSACryptoServiceProvider..ctor(Int32 dwKeySize, CspParameters parameters, Boolean useDefaultKeySize)
   at System.Security.Cryptography.RSACryptoServiceProvider..ctor(CspParameters parameters)
   at System.Security.Cryptography.X509Certificates.X509Certificate2.get_PrivateKey()
   at VemoSSO.SSOUtility.ProcessData(String decodedSig, String decodedToken, String combined) in

When I checked my Application Event Logs to see what exactly is happening, the event log showed that the "CertificateServicesClient" has stopped. And I noticed that it gets started automatically when I logon to the server.

Can anybody help me in finding the reason as to why this service? stops and starts automatically, and can we restart it immediately the moment it stops?

Thanks in advance.

-----
Ajay Jadhav
http://www.divinet.co.in

Toon Production??

Muammar©

20-Aug-09 1:42

Anybody knows how toons like Shaun the Sheep is created?? They look so real that I doubt they're real objects animated somehow, ain't they??

All generalizations are wrong, including this one!

(\ /)
(O.o)
(><)

Re: Toon Production??

OriginalGriff20-Aug-09 1:50

OriginalGriff

20-Aug-09 1:50

Plasticine.
Aardman Animations[^]

No trees were harmed in the sending of this message; however, a significant number of electrons were slightly inconvenienced.

This message is made of fully recyclable Zeros and Ones

Re: Toon Production??

Muammar©

20-Aug-09 1:59

Clay?? Stop Motion!!! God!! This's more stupid and time wasting that I ever thought!!
Thanks Griff!

All generalizations are wrong, including this one!

(\ /)
(O.o)
(><)

Re: Toon Production??

molesworth20-Aug-09 5:19

molesworth

20-Aug-09 5:19

Hardly stupid or time wasting. The quality and nuances you get from using plasticine is totally unique, and unlike almost any other kind of animation.

And even more high-tech methods of animation, such as computer-based modelling, are very, very time consuming (and people consuming). There's no easy way to do animations...

There are three kinds of people in the world - those who can count and those who can't...

Re: Toon Production??

Pete O'Hanlon20-Aug-09 2:11

Pete O'Hanlon

20-Aug-09 2:11

Muammar© wrote:
Anybody knows how toons like Shaun the Sheep is created?? They look so real that I doubt they're real objects animated somehow, ain't they??

Why on earth is this in the C# forum?

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