|
hi all,
i want to write a directshow filter in c#... and i m new to the technology...
can anyone please provide me basic guidelines (or links) so that i can start from the scratch...
thanks...
Kuldeep
|
|
|
|
|
|
I need to enumerate members of Administrators group on all computers remotely.
I should be able to specify computername, username & password. Has WMI got any class to enumerate group membership ?
Also, has WinNT provider got capability to connect to remote machines with alternate credentials?
Any code will be of great help. Thanks in anticiaptions.
h.
before c# there was darkness
|
|
|
|
|
Hello. I've actually recently written a program to manage user groups on remote servers, including add an expiration date/time when that user will be removed. I'll be posting an article on it soon. Here is some code that should help you out. You will need to add a reference to System.DirectoryServices, and using statements for System.DirectoryServices and System.Collections:
<br />
String entryString = "WinNT://" + computerName + ",computer";<br />
DirectoryEntry dirEntry = new DirectoryEntry(entryString, username, password);<br />
<br />
foreach (DirectoryEntry entry in dirEntry.Children)<br />
{<br />
if (entry.SchemaClassName.Equals("group", StringComparison.CurrentCultureIgnoreCase))<br />
{<br />
if (entry.Name.Equals("Administrators"))<br />
{<br />
object members = entry.Invoke("Members", null);<br />
<br />
foreach (object member in (IEnumerable)members)<br />
{<br />
DirectoryEntry memberEntry = new DirectoryEntry(member);<br />
String name = memberEntry.Name;<br />
String path = memberEntry.Path;<br />
MessageBox.Show(path + "\n" + name + "\n" + memberEntry.SchemaClassName);<br />
}<br />
}<br />
}<br />
}<br />
|
|
|
|
|
Hello there,
The problem is that I need to connect with alternate credentials. All my servers have different password.
WinNT provider by default uses pass-through authentication, which means takes your currently logged on priviledges to connect to remote computer. This works good if I have common password as I login using same passowrd. But that is very risky, a malicious code can then play aroumd.
I am also trying to find out way to connect using alternate credentials, If you get to know first please post it 
By the way, there's option in directory entry class to specify user/password but in that case the output is blank, not sure why.
Good day.
h.
before c# there was darkness
|
|
|
|
|
Hi,
What is Thick Client Application? Is it possible to create a Thick Client
Application using .Net . Please refer some sample application
With Regards,
Sakthi.
|
|
|
|
|
This[^] article is a good source of information - and is easily found by google. Just google on "wikipedia thick client". A good example of a thick (fat) client would be Microsoft Word.
Deja View - the feeling that you've seen this post before.
|
|
|
|
|
Basically there are two ways to do this,
Push (server pushes data to the client) and Pull (client sends a request and recives a response. HTTP is pull)
To implement a Push based system, you have 2 choices. Sockets (TCP/IP networking) and .Net Remoting.
A client server system using TCP/IP will need a custom server built using C#. This can run as a Windows service or as a standalone application. The server component cannot be built usiing ASP .Net. This gives you more control over the data and the server controls the update frequency. However, you will have to implement your own data protocol.
http://msdn2.microsoft.com/en-us/library/d3s1ybx2(vs.71).aspx
The advantage here is that you can achieve better performance, because you have more control over the client and the server. However, this depends a lot on your design and implementation. (Bad design== bad performance)
Remoting uses .Net objects. Clients can call objects on the server, and the server can call client methods. Compared to TCP/IP networking this gives you much less performance, but much more easier to implement. I haven't used remoting much to give an accurate description.
http://msdn2.microsoft.com/en-us/library/kwdt6w2k(vs.71).aspx
A Pull based system is similar to HTTP. The client makes a web request and recieves a response to it. This is done by using ASP .Net and .Net webservices. This gives you the automatic performance benefits of ASP .net like caching and the fact that your web server handles the connections more efficiently than your own custom server.
It will also be easy to scale out when using a web server. I've built web applications that handle upwards of 5000 clients making requests every 10 seconds.
Hope this helps...
SSK.
|
|
|
|
|
Hi Mr.SSK and Mr.Peti,
Thanks for your reply .
Can you give me a simple application illustrating Thick client.
Regards
Sakthi
|
|
|
|
|
 What? How does this describe a thick (fat) client?
Does this sound like Microsoft Excel or Word to you? A fat client performs the bulk of processing on the client. That's it. It's not a difficult concept, and doesn't rely on push/pull architectures at all.
Deja View - the feeling that you've seen this post before.
|
|
|
|
|
i would like to know about delegates
can any one provide documentation
Sunil Tvl
|
|
|
|
|
ya can go throug codeprojects.com
Sunil Tvl
|
|
|
|
|
You can find details documentations in MSDN library.
|
|
|
|
|
sunilTVL wrote: i would like to know about delegates
can any one provide documentation
How about Google[^]?
Deja View - the feeling that you've seen this post before.
|
|
|
|
|
Hi,
I am using EnterPrise Library 3.0 April 2007 application block.
I want to create a day wise Log file
but it will create only single file with name trace.log and when ever day changes the Log content is adding but I need day wise logfile.Could any one assist?
Thanks.
|
|
|
|
|
hi, i need your suggestion on how to do data binding to display a table consisting of data that is obtained from xml file. The table is created using listbox and should have the structure as shown below:
_____________________________
|aaaaaaaaaaa|_________1______|
|___________|_________2______|
|bbbbbbbbbbb|________3_______|
|___________|_________4______|
May i know how should i write my xaml codes?
Thanks.
|
|
|
|
|
In my XML, for every node one optional attribute is there.
I am trying to find that, specific node has that optional attribute or not at runtime but there are some issues
Please help me on this
Thanks in advance
Praveenkumar Palla
|
|
|
|
|
What are the issues? You can't expect to get help if you don't identify the problem.
|
|
|
|
|
my xml is like this
<laser lasername="newlaser" modelname="Nufern v1.0" serialno="1" manufacturername="Nufern v1.0.0.0" maximumpower="200" ip="192.168.1.173">
<tabular>
<property id="1" name="System Id" prgbar="false" selected="false" min="0" max="30" pwd="true" units="Sec" gauge="false">
<property id="10" name="Startup delay" prgbar="false" selected="false" min="0" max="30" units="Sec" gauge="false">
In the above xml there two child nodes for node "tabular" . In that one node has "pwd" attribute and another one don't have, it is optional one.
So I want to know that for the specific node the attribute is there or not at runtime----I tried like this
XmlDocument xmldoc2 = new XmlDocument();
xmldoc2.LoadXml(objXmlTasks.decrypt());
XmlNodeList xmlchildnodelst = xmldoc2.SelectNodes("/lasers/laser [@LaserName='" + laseridval + "']/properties/tabular/property[@name='" + childLaserSelectedName + "']");
Password= xmlchildnodelst[0].Attributes.GetNamedItem("pwd").Value;
But there is now pwd attribute for second one so exception
"object reference null"
PraveenKumar Palla
|
|
|
|
|
my xml is like this
<?xml version="1.0" ?>
<laser LaserName="newlaser" ModelName="Nufern v1.0" SerialNo="1" ManufacturerName="Nufern v1.0.0.0" Maximumpower="200" IP="192.168.1.173">
<tabular>
<property id="1" name="System Id" prgbar="false" selected="false" min="0" max="30" pwd="true" units="Sec" gauge="false" />
<property id="10" name="Startup delay" prgbar="false" selected="false" min="0" max="30" units="Sec" gauge="false" />
</tabular>
</properties>
</laser>
In the above xml there two child nodes for node "tabular" . In that one node has "pwd" attribute and another one don't have, it is optional one.
So I want to know that for the specific node the attribute is there or not at runtime----I tried like this
XmlDocument xmldoc2 = new XmlDocument();
xmldoc2.LoadXml(objXmlTasks.decrypt());
XmlNodeList xmlchildnodelst = xmldoc2.SelectNodes("/lasers/laser [@LaserName='" + laseridval + "']/properties/tabular/property[@name='" + childLaserSelectedName + "']");
Password= xmlchildnodelst[0].Attributes.GetNamedItem("pwd").Value;
But there is now pwd attribute for second one so exception
"object reference null"
|
|
|
|
|
Yes, you can't do it this way. If GetNamedItem fails to find the attribute, it returns null, so the call to Value fails with the null reference exception.
Instead, you need to do it like this:
XmlNode node = xmlchildnodelst[0].Attributes.GetNamedItem("pwd");
if (node != null)
{
Password = node.Value;
}
else
{
}
Also, please put the code blocks, including the xml, inside <pre> tags, which will keep the formatting and make it much easier to read.
|
|
|
|
|
hello,
I want to find a particular word in file and replace it with other word. how can i archive this through c# File Handling routines ???
Thanks,
|
|
|
|
|
hi
read the file with the streamreader. use the readtoend methode.
replace the particular word's and write it back with the
streamwriter object.
regards
|
|
|
|
|
ya, but in which i should read data ? i think, i have too big file and string can't hold whole file in it.
|
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
