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I have a COM object with 2 interfaces, IClient and IClient2.
Using the object with the first interface is easy, I just add it to my project with "Project/Add Reference", and create it like this:
Client tc = new Client();
Then I get access to all the functions in the IClient interface.
But, I also have e newer interface, IClient2, which implements all methods from IClient and some new ones, but I can't figure out how to use IClient2 
Anyone have a good idea?
- Anders
Money talks, but all mine ever says is "Goodbye!"
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In case you don't get any answers here, the DOTNET mailing list has fielded a TON of questions on COM interop; something I haven't had to do which is why I can't answer your question.
Sorry I don't have a straight-up answer,
James
Simplicity Rules!
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Try this :-
C# program :- Clipboard.SetDataObject(new Bitmap("D:\\nish.bmp"),true);
Now try to paste that into Paint Brush or MS Word or Adobe Photoshop or any other non-.NET app.
It will fail!!!
Why?????????????
Nish 
One little CD gone,
Then two CDs gone,
Then 5 more gone,
For a total 7 gones,
If I was a CD R,
I'd wanna cry,
Cause I'd be just a goner,
For a nasty CD burner.
[funny how frustration wakes up the poet in me]
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We've narrowed it down to a problem with Beta 2, poor Nish has to upgrade now and lose VS.NET 
James
Simplicity Rules!
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Yeah, this really sucks!!!
Nish
One little CD gone,
Then two CDs gone,
Then 5 more gone,
For a total 7 gones,
If I was a CD R,
I'd wanna cry,
Cause I'd be just a goner,
For a nasty CD burner.
[funny how frustration wakes up the poet in me]
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How would I go about displaying a HTML document inside a windows form? Is there a control that can display HTML text?
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You have to use the web browser activex control that comes with IE. There is an article here that tells how to use the control in your own .NET programs.
James
Simplicity Rules!
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Alternatively you can use the DHTML ActiveX control (DHTMLED.ocx) to use it, simply find the file (or download the latest copy from Microsoft), then add it to your toolbox and add it to your form as a normal control.
The control as lots of methods that you can use to get HTML in to it, e.g. you can directly load a url:
axDHTMLEdit1.LoadURL("http://www.codeproject.com");
or you can access the DOM to add HTML programatically:
axDHTMLEdit1.DOM.body.innerHTML = "<a href=\"http://www.codeproject.com\">The Code Project</a>";
I suggest you download the DHTMLEd SDK from Microsoft which includes documentation for all the properties and methods.
This is a very powerful control but may be a bit of overkill for what you're doing.
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In Java you have the JAI (Java Advanced Imaging) framework for writing advanced imaging applications. Do you have something similar in C# or is it in the works at Redmond for future release?
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Since I'm not a Java programmer I have no idea what JAI includes, but GDI+ (which .NET incorporates) incorporates transparency, alpha blending, gradients, texture brushes, antialiasing, and more.
James
Simplicity Rules!
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Charles Petzold's book on C# is full of information on this topic.
Nick Parker
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Hi All,
I have a text file which will hold some details for my application.
I am now trying to read these details to display them in my application.
I know how to open a file and setup a StreamReader , but how can I make my reader only read from a certain position or even better search for a certain keyword and then read from there?
Thanks,
Gavin
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If its a text file you should probably use a TextReader instead of a StreamReader. You can use the Seek method of the reader to move or position; but if you are looking for a specific thing you will probably have to read through the file until you find what you are looking for.
James
Simplicity Rules!
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I tried using the TextReader but it didn't have the seek option and I couldn't find anything else which was helpful.
I need to pick up 3 different things from this file, but I can't figure out how to read through the file and select a certain thing?
Or is there a better way to do this other than using a static file.
I just need to store some small strings.
Thanks
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Here's some code:
static void Main(string[] args)
{
const int iReadTotal=10;
const int iReadStart=10;
FileStream f = new FileStream ("C:\\test.vbs",System.IO.FileMode.Open, System.IO.FileAccess.Read);
f.Seek(iReadStart,System.IO.SeekOrigin.Current);
StreamReader st = new StreamReader(f);
char[] buffer=new char[iReadTotal];
st.ReadBlock(buffer,0,buffer.Length);
string s="";
for(int i=0;i<buffer.Length;i++)
s+=buffer[i].ToString();
Console.WriteLine(s);
Console.Read();
}
HTH
Cheers,
Simon
"I get paid for my brain and my thinking in several obscure worlds", Olli, The Lounge
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I want to use database in connected mode with DataReader.After I use ExecuteReader() I waana fill DataGrid with it but I can't add row to DataGrid dynamicly or show the table in DataGrid in Connected mode.
OleDbCommand command = new OleDbCommand ( "select * from Tennis", this.myoleDbConnection );
myoleDbConnection.Open ();
OleDbDataReader reader = command.ExecuteReader ( );
while ( reader.Read () )
{
}
reader.Close ();
myoleDbConnection.Close ();
Mazy
"The path you tread is narrow and the drop is shear and very high,
The ravens all are watching from a vantage point near by,
Apprehension creeping like a choo-train uo your spine,
Will the tightrope reach the end;will the final cuplet rhyme?"Cymbaline-Pink Floyd
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I don't think you can fill the datagrid directly, you have to use a datatable at the very least.
James
Simplicity Rules!
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Yes,thats the thing I find out today,So I think when I want use DataReader it is not good idea to use DataGrid and ListView is better option for it.Beacaue for DataGrid I have to use DataSet or DataTable so I have to do one extra operation.Whats your opinion about it?
Thanks 
Mazy
"The path you tread is narrow and the drop is shear and very high,
The ravens all are watching from a vantage point near by,
Apprehension creeping like a choo-train uo your spine,
Will the tightrope reach the end;will the final cuplet rhyme?"Cymbaline-Pink Floyd
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[my 2 cents]
Using a listview is a far better option.
Short of prototyping, I don't see a place for large scale databinding in applications.
Cheers,
Simon
"I get paid for my brain and my thinking in several obscure worlds", Olli, The Lounge
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[my 2 cents too]
I understand this using the old databinding control (see VB 6 controls), but with the new ADO.NET model I think things have changed, the combination of Connection, DataAdapter, DataSet and DataGrid should work a lot better.
Anyway, I haven't done any testing yet.
Andres Manggini.
Buenos Aires - Argentina.
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Correct, the VB6 controls sucked because they always kept a connect to the database open, so you could count on there being x number of connections at any one time.
With the .NET model you open a connection, get the data, then close the connection; everything is operated on in a disconnected state. Once you're done editing you can ignore the changes or open another connection and make the changes.
James
Simplicity Rules!
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You need to use a datactrl, then assign the datagrid to datacontrol and in your code asign the dataset to datactrl
Best Regards
Carlos Antollini.
Sonork ID 100.10529 cantollini
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DataSet work in disconnected mode,I wanna use connected mode.
Mazy
"The path you tread is narrow and the drop is shear and very high,
The ravens all are watching from a vantage point near by,
Apprehension creeping like a choo-train uo your spine,
Will the tightrope reach the end;will the final cuplet rhyme?"Cymbaline-Pink Floyd
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Is there any way to speed up the startup time of a winforms application? The thing takes nearly a minute to startup! This is on a pretty low end machine (P133) but it runs fine once it's going.
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You can run the install time JITter on it.
ngen [assembly name] In this case Assembly Name would be the executable.
James
Sonork: Hasaki
"I left there in the morning
with their God tucked underneath my arm
their half-assed smiles and the book of rules.
So I asked this God a question
and by way of firm reply,
He said - I'm not the kind you have to wind up on Sundays."
"Wind Up" from Aqualung, Jethro Tull 1971
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