C# Discussion Boards - CodeProject

Re: Generic event triggering

skbrann20-Sep-09 21:49

skbrann

20-Sep-09 21:49

Thanks a lot! Smile | :)

Dll info

mikla52116-Sep-09 22:30

mikla521

16-Sep-09 22:30

No, can't figure this out by myself...

I do have some dll's written in c++ which are part of a big project. Now I want to do a C# program that only display functions and parameters from a selected dll dynamically.
Tried some with LoadLibrary but can't get it to work. I won't call the dll code just need the info. Ideas?

Re: Dll info

Luc Pattyn17-Sep-09 2:46

Luc Pattyn

17-Sep-09 2:46

For managed C++/CLI code, you could use reflection.

For native C/C++ code, the only way I see is by diving into the DLL file yourself, locating the EXPORTS table and mimicking the DUMPBIN utility (with option /EXPORT).

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Local announcement (Antwerp region): Lange Wapper? Neen!

Validate java SAML signature from C#

adrya16-Sep-09 21:57

adrya

16-Sep-09 21:57

Hi,

How can i validate in .Net C# a SAML signature created in Java? Here is the SAML Signature that i get from Java:

 <ds:Signature xmlns:ds="http://www.w3.org/2000/09/xmldsig#">
        <ds:SignedInfo>
            <ds:CanonicalizationMethod Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
            </ds:CanonicalizationMethod>
            <ds:SignatureMethod Algorithm="http://www.w3.org/2000/09/xmldsig#rsa-sha1">
            </ds:SignatureMethod>
            <ds:Reference URI="#_e8bcba9d1c76d128938bddd5ae8c68e1">
                <ds:Transforms>
                    <ds:Transform Algorithm="http://www.w3.org/2000/09/xmldsig#enveloped-signature">
                    </ds:Transform>
                    <ds:Transform Algorithm="http://www.w3.org/2001/10/xml-exc-c14n#">
                        <ec:InclusiveNamespaces xmlns:ec="http://www.w3.org/2001/10/xml-exc-c14n#" PrefixList="code ds kind rw saml samlp typens #default xsd xsi">
                        </ec:InclusiveNamespaces>
                    </ds:Transform>
                </ds:Transforms>
                <ds:DigestMethod Algorithm="http://www.w3.org/2000/09/xmldsig#sha1">
                </ds:DigestMethod>
                <ds:DigestValue>zEL7mB0Wkl+LtjMViO1imbucXiE=</ds:DigestValue>
            </ds:Reference>
        </ds:SignedInfo>
        <ds:SignatureValue>
jpIX3WbX9SCFnqrpDyLj4TeJN5DGIvlEH+o/mb9M01VGdgFRLtfHqIm16BloApUPg2dDafmc9DwL
Pyvs3TJ/hi0Q8f0ucaKdIuw+gBGxWFMcj/U68ZuLiv7U+Qe7i4ZA33rWPorkE82yfMacGf6ropPt
v73mC0bpBP1ubo5qbM4=
        </ds:SignatureValue>
        <ds:KeyInfo>
            <ds:X509Data>
                <ds:X509Certificate>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                </ds:X509Certificate>
            </ds:X509Data>
        </ds:KeyInfo>
    </ds:Signature>

If someone knows please help!!
Thank you very much.

Re: Validate java SAML signature from C#

Mirko198016-Sep-09 23:02

Mirko1980

16-Sep-09 23:02

Look for classes in the System.Identitymodel.Tokens namespace.
In particular, the SamlAssertion.ReadXml method should be able to parse SAML tokens.

Re: Validate java SAML signature from C#

adrya16-Sep-09 23:25

adrya

16-Sep-09 23:25

I know to parse SAML, i need to validate the signature.
I tried this:

public bool VerifySignature()
       {
           X509Certificate2 certificate = null;

           XmlDocument doc = new XmlDocument();
           XmlElement xmlAssertionElement = this.GetXml(doc);
           doc.AppendChild(xmlAssertionElement);

           // Create a new SignedXml object and pass it
           // the XML document class.
           SamlSignedXml signedXml = new SamlSignedXml(xmlAssertionElement);

           // Get signature
           XmlElement xmlSignature = this.Signature;
           if (xmlSignature == null)
           {
               return false;
           }

           // Load the signature node.
           signedXml.LoadXml(xmlSignature);

           // Get the certificate used to sign the assertion if information about this
           // certificate is available in the signature of the assertion.
           foreach (KeyInfoClause clause in signedXml.KeyInfo)
           {
               if (clause is KeyInfoX509Data)
               {
                   if (((KeyInfoX509Data)clause).Certificates.Count > 0)
                   {
                       certificate = (X509Certificate2)((KeyInfoX509Data)clause).Certificates[0];
                   }

               }
           }

           if (certificate == null)
           {
               return false;
           }

           return signedXml.CheckSignature(certificate, true);

       }

It valides the signature of a SAML signed in .Net but not of this Java one.

Re: Validate java SAML signature from C#

adrya23-Sep-09 19:03

adrya

23-Sep-09 19:03

Solved the problem with the answers in this thread: http://social.msdn.microsoft.com/Forums/en-US/wcf/thread/faf0b66c-294b-4d84-a19b-504dd8e81922
My code was very similar with examples from MSDN shown there, only thing missing was: doc.PreserveWhitespace=true on validation.

How can I get the local machine's IP address in a Windows app ?

Rahad Rahman16-Sep-09 21:23

Rahad Rahman

16-Sep-09 21:23

How can I get the local machine's IP address in a Windows app ?

Re: How can I get the local machine's IP address in a Windows app ?

stancrm16-Sep-09 21:26

stancrm

16-Sep-09 21:26

Finding IP Address Information[^]

Re: How can I get the local machine's IP address in a Windows app ?

Calla16-Sep-09 21:36

Calla

16-Sep-09 21:36

Did you even try Google before posting this..? Hmmm | :|

Re: How can I get the local machine's IP address in a Windows app ?

Harvey Saayman16-Sep-09 22:03

Harvey Saayman

16-Sep-09 22:03

System.Net.IPAddress[] MyIPs = System.Net.Dns.GetHostAddresses(Environment.MachineName);

Harvey Saayman - South Africa
Software Developer
.Net, C#, SQL
you.suck = (you.Occupation == jobTitles.Programmer && you.Passion != Programming)
1000100 1101111 1100101 1110011 100000 1110100 1101000 1101001 1110011 100000 1101101 1100101 1100001 1101110 100000 1101001 1101101 100000 1100001 100000 1100111 1100101 1100101 1101011 111111

Re: How can I get the local machine's IP address in a Windows app ?

Luc Pattyn17-Sep-09 2:49

Luc Pattyn

17-Sep-09 2:49

Hi,

All previous replies lead to your local IP address, i.e. the address as seen on your LAN; when connecting to the Internet, the outside world may see you at a different address though, and you need an external server to tell you that address, have a look here[^].

Smile | :)

Luc Pattyn

Have a look at my entry for the lean-and-mean competition; please provide comments, feedback, discussion, and don’t forget to vote for it! Thank you.

Local announcement (Antwerp region): Lange Wapper? Neen!

Re: How can I get the local machine's IP address in a Windows app ?

carlecomm22-Sep-09 2:02

carlecomm

22-Sep-09 2:02

//
//IP
//
System.Net.IPAddress[] addressList = Dns.GetHostByName (Dns.GetHostName()).AddressList;
for (int i = 0; i < addressList.Length; i ++)
{
s += addressList[i].ToString();
}

modified 27-May-14 5:31am.

TCP Servers

Harvey Saayman16-Sep-09 21:18

Harvey Saayman

16-Sep-09 21:18

Hi guys

So the past few weeks I've been doing research and playing around with TCP servers. I've finally got the one type of server architecture down and I understand the why's and the how's.

Basically the server object creates a TcpListener in its own thread to listen for client connections. When this listener thread accepts a client it creates a client object for it and handles communication(which is the blocking type) for that client in its own thread. So 1 thread per client.

I get that this doesn't scale well and why.

Now I need to move on to the non blocking way. I believe its called "asynchronous TCP sockets", using BeginConnect(), BeginAccept(), BeginSend(), BeginReceive(), EndConnect(), EndAccept(), EndSend()and EndReceive()

Now I've found alot of articles but what I really need is a bare bones example and explanation. Alot of these articles are built around custom libraries and implementations of this server architecture and I find it difficult to find the core concepts in between other code.

So my question, can anyone recommend an article where this is explained well enough and in a bare bones type manor? I'm really more interested in how it works instead of copying the code and modifying it for my needs.

Thanks Smile | :)

Re: TCP Servers

N a v a n e e t h16-Sep-09 22:13

N a v a n e e t h

16-Sep-09 22:13

Harvey Saayman wrote:
Basically the server object creates a TcpListener in its own thread to listen for client connections

When creating scalable server applications, you should work directly with Socket class. If you need more, come up with a custom socket implementation which suits your needs. We did this once with an application. TcpListener or TcpClient are just wrapper classes built on top of Socket class. You will find it very limiting when you start coding with these classes.

Here[^] is my favorite article. I never found another one which is not even closer to this.

If you are doing serious coding, I would suggest to take a book rather than depending on several articles.

Smile | :)

Navaneeth

How to use google | Ask smart questions

Re: TCP Servers

Harvey Saayman17-Sep-09 0:51

Harvey Saayman

17-Sep-09 0:51

Hey Navaneeth

That looks promising Smile | :)

thank you very much

<NoteToOthers>
    If you know of other useful articles please let me know
</NoteToOthers>

modify a css property in code behind

firefeet16-Sep-09 20:50

firefeet

16-Sep-09 20:50

hi all,

i hav a css class which i hav applied to 4 elements. i want to change the width property od the css class alone in code behind.
how do i do it?

thanks in advance

Re: modify a css property in code behind

firefeet16-Sep-09 23:03

firefeet

16-Sep-09 23:03

there is no way to change a single attribute in a css class in code behind.

how u can do it is either giv another css class or set a particular style attribute in code behind

Re: modify a css property in code behind

carlecomm22-Sep-09 2:00

carlecomm

22-Sep-09 2:00

// asp.net
<td class="UI" ...>

//css

.UI
{
。。。
。。。
width:100%; /* width:50px*/
。。。
。。。
}

modified 27-May-14 5:31am.

Help regarding dynamic 2D array ?

Saad Shuja16-Sep-09 20:26

Saad Shuja

16-Sep-09 20:26

i have created a dynamic 2d array using list<list <double="">> ....
now i want to convert this object into an actual array ?
how can i do that ?
bcoz the list.toarray can (i think convert it into a 1d array)???
Sniff | :^)

Re: Help regarding dynamic 2D array ?

OriginalGriff16-Sep-09 21:35

OriginalGriff

16-Sep-09 21:35

Couple of things:
1) When you try to describe things such as List<T> please use the greater than and less than symbols just above - that way they don't get stripped out as HTML.
2) We would need more information. I am guessing that your "dynamic 2D array using list>" is actually along the lines of "List<List<string>>" but it could be anything really. We need to know what you are doing in order to help.
3) Check your post with the "Preview" button to ensure it looks like what you wrote! I keep forgetting...

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Query regarding Domain knowledge related Url

Tridip Bhattacharjee16-Sep-09 20:08

Tridip Bhattacharjee

16-Sep-09 20:08

hi,

is there any site from where developer can acquire Domain knowledge for developing accounting software or CRM or various module of ERP. i search google but didn't find any such site so if anyone knows then please give me the reference of those site.

Thanks

tbhattacharjee

Global.asax file with Window Applications

Inderjeet Kaur16-Sep-09 19:40

Inderjeet Kaur

16-Sep-09 19:40

Hi
I was trying to use Application_Start method of Global.asax file to catch Exceptions. Can we add Global.asax to Window application. I am not able to add it. Can anyone help me on this.

Thanks & Regards
Inderjeet Kaur

Inderjeet Kaur
Sr. Software Engg

Re: Global.asax file with Window Applications

Calla16-Sep-09 20:06

Calla

16-Sep-09 20:06

You can't use the Global.asax in a WinForm application AFAIK.
Maybe you should have a look at the System.Windows.Forms.Application.ThreadException event instead.

Re: Global.asax file with Window Applications

Arun Jacob16-Sep-09 20:15

Arun Jacob

16-Sep-09 20:15

Global.asax is an ASP.NET specific application file.

Better you read this,
http://msdn.microsoft.com/en-us/library/1xaas8a2%28VS.71%29.aspx[^]
Smile | :)

Arun Jacob
http://codepronet.blogspot.com/

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