Re: Using ActiveX control in C# - C# Discussion Boards

Determining radio button choice...???

19-Aug-03 9:53

Are you sure the path exists that you want to code? You should use File.Exists() before attaching it to be sure. Passing a string you typed and a string that you got from another call are not different to the application and the CLR whatsoever! Seriously - the CLR sees the same thing - it's a System.String.

Also, this doesn't use Outlook, but a simple SMTP mailer. If you use Outlook, you open a can of worms because then you must start interoping a lot of things, thereby bloating the application. You must also make sure that the user has a specific version of Outlook on their system, or make sure your app can handle different Outlook and Office API versions. If all you need to do is send mail, just stick with the simple SMTP mailer.

If you still want the Outlook functionality in your app, the .NET Framework SDK has several examples with Word and MSDN has many examples in VB.NET and C# (primarily VB.NET, unfortunately, but remember that all languages targeting the CLR use the SAME class library so most stuff is the same - just syntax is different).

-----BEGIN GEEK CODE BLOCK-----
Version: 3.21
GCS/G/MU d- s: a- C++++ UL@ P++(+++) L+(--) E--- W+++ N++ o+ K? w++++ O- M(+) V? PS-- PE Y++ PGP++ t++@ 5 X+++ R+@ tv+ b(-)>b++ DI++++ D+ G e++>+++ h---* r+++ y+++
-----END GEEK CODE BLOCK-----

vlusardi19-Aug-03 7:33

vlusardi

19-Aug-03 7:33

Is there an easy way to determine which radio button in a group has been chosen, besides having to put code in the checkchanged or clicked event for each button in the group...???

thanks,

vince

Re: Determining radio button choice...???

Heath Stewart19-Aug-03 9:56

Using ActiveX control in C#

19-Aug-03 9:56

Like in HTML? No, unfortunately. But it doesn't have to be difficult at all. The radio buttons must be in some container, be that any given Control or, typically, a GroupBox. In order for controls to show up in the UI, they must be added to the container's Controls collection. Use that to your advantage:

foreach (Control c in this.Controls)
{
  RadioButton rb = c as RadioButton;
  if (rb != null && rb.Checked)
  {
    Console.WriteLine("You selected {0}!", rb.Text);
    break;
  }
}

GIS in C#

laphijia19-Aug-03 7:07

laphijia

19-Aug-03 7:07

I need to make an application that reads from popular GIS file formats like ESRI Shape File or MapInfo TAB.

I found the open source GeoTools.net but they apparently don't work and the website on sourceforge is not really being updated.

Is there any open source or free library out there for use with .NET?

"Nelle cose del mondo non e' il sapere ma il volere che puo'."

Big Trev19-Aug-03 6:43

Big Trev

19-Aug-03 6:43

Has any one had much luck with this.

I have run AXIMP ont the .OCX to create the DLL. Then i have registerd the DLL using REGASM.

I add a reference to the DLL, then try to instantiate an object, I get the following error

An unhandled exception of type 'System.Runtime.InteropServices.COMException' occurred in mscorlib.dll

Additional information: Catastrophic failure

Has anyone any ideas.

I have also tried this by just adding a reference to the original .ocx, and letting the IDE to the AXIMP for me. Same problem.

Thanks

Stephane Rodriguez.19-Aug-03 8:45

Stephane Rodriguez.

19-Aug-03 8:45

Big Trev wrote:
I have run AXIMP ont the .OCX to create the DLL. Then i have registerd the DLL using REGASM.

These two actions are doing the opposite.

If you intend to use an ActiveX control in your C# code, then use the IDE, Toolbox \ customize, and browse your ActiveX component. The ActiveX component will be preinteroped, so you don't need any manual call to aximp.exe
(this works in most cases. There are gotcha though).

When you drop the component into a form, you'll see whether it gets instantiated or not.

RSS feed

Heath Stewart19-Aug-03 10:03

19-Aug-03 10:03

As Stephane said, just use the "Add Reference..." and select the COM tab. You almost have the right idea, though.

Use aximp.exe to import an ActiveX control and create an interop assembly. DO NOT, however, register it! Regasm.exe is for registering assemblies that contain interop metadata, such as controls that act as ActiveX controls through a CCW (COM-Callable Wrapper). If you use Regasm.exe on the interop assembly generated by from the native ActiveX control, you've just overwritten the registry settings so that the interop assembly is now the target of the CLSID! Any application trying to instantiate your original ActiveX control is now instantiating (unknowingly in almost all cases) the control in the .NET assembly through a CCW. The interop assembly, however, is looking for the actual control and not finding it because it's finding itself!

Now, I would hope (and don't remember off the top of my head) that regasm.exe checks to see if the assembly was imported from an ActiveX control. But it if isn't, you need to use "regasm.exe /u myassembly.dll" immediately, and then use "regsvr32.exe myactivex.ocx" to fix the registry problems that are most likely affecting you.

Big Trev19-Aug-03 21:32

Big Trev

19-Aug-03 21:32

Thanks for the reply. I still can not get it working though.

this is the code i am using to create the object.

COMMSOCXLib.CommsOCXClass comm = new COMMSOCXLib.CommsOCXClass();
try
{
comm.Reset();
}
catch (System.Runtime.InteropServices.COMException e)
{
Console.WriteLine(e.ToString());
Console.ReadLine();
}

And this is the error i catch.

System.Runtime.InteropServices.COMException (0x8000FFFF): Catastrophic failure
at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFla
gs flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)
at COMMSOCXLib.CommsOCXClass.Reset()

Heath Stewart20-Aug-03 2:26

20-Aug-03 2:26

Did you unregister your interop assembly and re-register the actual ActiveX OCX? You might also re-install ActiveX control if it was packed in an installer, since the install might have written more registry entries. It seems as if the actual COM method (remember, the interop assembly is only a Runtime Callable Wrapper (RCW), in which calls are forwarded) is not being called because the forwarding method can't the object to call.

Microsoft Word automation

Big Trev20-Aug-03 2:44

Big Trev

20-Aug-03 2:44

Yep, i did a regasm /u on the interop assembly, and regsvr32 on the ocx.

Still no joy.

let me know if you fancy having a go with the ocx. I can mail it. it is only 100k.

At the moment i an writing a DLL wrapper for the c api that also comes with the product.

Thanks

Trev

Radoslav Bielik19-Aug-03 6:35

Radoslav Bielik

19-Aug-03 6:35

Hi all!

OK, so now I know how to use Office Primary Interop Assemblies to do Word automation, i.e. open a word document in its own window, maximize this window, toggle full screen mode, etc.

The question is: is it possible to load the document into the client area of a windows form? You know, if you open Microsoft Office documents in Internet Explorer they load into the explorer window, not into a blank window. Is this possible with Windows Forms / C#? If so, how?

Other - less important questions:

1) Is it possible to hide the caption (using automation) of the Microsoft Word when in full screen mode? The WordViewer doesn't show the caption in full screen mode, but the Word itself does.

2) Is it possible to force the Microsoft Word window to be always on top of other windows (again, using automation?)

3) Is it possible to use the Microsoft Word Viewer in a similar way? Whem I tried to browse the type libraries using oleview.exe I could find "Microsoft Word 9.0 Object Library", is there a type library for Word viewer?

Thanks in advance, any clues are highly appreciated!

Rado

Re: Microsoft Word automation

Stephane Rodriguez.19-Aug-03 6:42

Stephane Rodriguez.

19-Aug-03 6:42

Radoslav Bielik wrote:
Is this possible with Windows Forms / C#? If so, how?

Active Documents (formerly known as OLE documents) are supposed to be supported in Whidbey (VS.NET 2004).
In the mean time, you could host the web browser in a form and ask it to show that Word document.

RSS feed

Re: Microsoft Word automation

Radoslav Bielik19-Aug-03 7:16

Radoslav Bielik

19-Aug-03 7:16

Thanks for the information! Sigh | :sigh:

I will try that.

Rado

Add a progressbar to a statusbar...

BoozeBomb19-Aug-03 4:18

BoozeBomb

19-Aug-03 4:18

Does anyone know how to add a progress bar to one of the panels of a status bar? I'm referring to a windows application of course. I'm stuck and I can't find anything on the code project about this.

Thanks

Re: Add a progressbar to a statusbar...

Heath Stewart19-Aug-03 10:04

any "smarter" to convert char[] to byte[]?

19-Aug-03 10:04

You use owner-drawing to place or draw a ProgressBar into a StatusBar or StatusBarPanel. It's not difficult, and if you search the message threads you'll find many examples posted in the past.

zecodela19-Aug-03 0:32

zecodela

19-Aug-03 0:32

hi,
i need to put a string into byte[]. i can't find any "smarter" method to do.
currently, i do it in this way. suppose string like this "at+cmgl=4"

byte[] data = {(byte) 'a', (byte) 't', .... ,(byte) '4');

as i can't convert char[] to byte[], that's why i need to it in this way.
so, any better method to do it?

thanks,
jim

Re: any "smarter" to convert char[] to byte[]?

Venkatraman19-Aug-03 2:24

Venkatraman

19-Aug-03 2:24

System.Text.Encoding.GetEncoding("ENCODING TYPE).GetBytes(mystring)

Cheers,
Venkatraman Kalyanam
Bangalore - India

"Being Excellent is not a skill, it is an attitude"

Reality is an illusion caused by caffeine deficiency(one Microsoft Research scholor)

Re: any "smarter" to convert char[] to byte[]?

Heath Stewart19-Aug-03 10:07

19-Aug-03 10:07

Or even simpler:

System.Text.Encoding.ASCII.GetBytes(mystring)

System.Text.Encoding.Unicode.GetBytes(mystring)

. There are several other encodings you can use. Not only is it easier to type, but it also eliminates partial human error in case your forget an "I" in "ASCII" or something. This also results in faster calls within the CLR since parsing strings is extremely slow, and lookups would have to be performed before you got the actual Encoding object.

DateTime manipulations

kaloyan18-Aug-03 23:57

kaloyan

18-Aug-03 23:57

Hi,

Is it possible to extract the first day of a given week (an integer) from a given year??? I've managed to get the number of the week after a severe struggle with the DateTime class & DateTimeFormatInfo class, but could not find anything about getting the dates in that week...

Thanks...

Julian Bucknall [MSFT]19-Aug-03 7:28

Julian Bucknall [MSFT]

19-Aug-03 7:28

I take it you are using the ISO definition of a week number? (That is, a week starts on a Monday and week 1 is the week that contains the first Thursday of the year.)

To calculate the date of the Monday for a given week number, you need to calculate the date of the Monday for week 1 and then add (7 * (weeknumber-1)) days to that date.

The easiest way to do that is to calculate the date of the first Thursday and then subtract 3 days.

To calculate the date of the first Thursday, calculate the day of the week for 1-Jan for that year. If it is a: Monday, add 3 days; Tuesday, add 2; Wednesday, add 1; Thursday, you got it in one; Friday, add 6; Saturday, add 5; Sunday, add 4.

So, amalgamating all that: calc DOW for 1-Jan. For each possibility, the Monday of week 1 will therefore be

If 1-Jan is a Monday, the Monday of week 1 is 1-Jan
If 1-Jan is a Tuesday, the Monday of week 1 is 31-Dec of previous year.
If 1-Jan is a Wednesday, the Monday of week 1 is 30-Dec of previous year.
If 1-Jan is a Thursday, the Monday of week 1 is 29-Dec of previous year.
If 1-Jan is a Friday, the Monday of week 1 is 4-Jan.
If 1-Jan is a Saturday, the Monday of week 1 is 3-Jan.
If 1-Jan is a Sunday, the Monday of week 1 is 2-Jan.

So, at that point it's simple. Good luck!

Cheers, Julian
Program Manager, C#

This posting is provided "AS IS" with no warranties, and confers no rights.

kaloyan20-Aug-03 19:06

kaloyan

20-Aug-03 19:06

That did the job! Smile | :)

Thanks a lot!

Kaloyan

Ista19-Aug-03 16:54

Ista

19-Aug-03 16:54

what happened to DateTime.DayOfWeek?

I'm not an expert yet, but I play one at work. Yeah and here too.