.NET (Core and Framework)

Re: What is the min OS I can install .Net on?

15-May-02 8:17

The Framework (which is required for someone to run a .NET program) requires Windows 98 or later, or Windows NT 4.0 or later.

The SDK and Visual Studio .NET both require Windows NT 4.0 or later or Windows XP Professional.

James

Simplicity Rules!

Kevin McFarlane27-May-02 9:55

Kevin McFarlane

27-May-02 9:55

And Windows NT4 must be SP6a.

Kevin

What is your %PATH% after installing .NET?

Todd Smith13-May-02 18:42

Todd Smith

13-May-02 18:42

What is your %PATH% after installing .NET?

I was just reading through a .net book and they said to run ildasm.exe from start/run. Apparently I didn't have the proper path in my environment variable. Did something goof up during my install?

Todd Smith

Re: What is your %PATH% after installing .NET?

James T. Johnson13-May-02 18:41

13-May-02 18:41

As far as I know the path isn't set if you run the setup from VS.NET, but you are prompted to set the path if you install the SDK separately.

In anycase, add %WINDIR%\Microsoft.NET\[framework version]\ to your path.

James

Simplicity Rules!

.NET via C++ COM

rkiesler13-May-02 8:44

13-May-02 8:44

I have the following method that instantiates a specified class in a given .NET assembley with specified activation attributes.

HRESULT LoadCORClassEx(
BSTR AssemblyName, /* mscorlib */
BSTR typeName, /* System.Text.RegularExpressions.Regex */
REFIID riid,
void **ppv,
SAFEARRAY *args)
{
HRESULT hr = S_OK;
if(ppv == NULL) return E_POINTER;
*ppv = 0;

/*** debug ***/
VARIANT var;
HRESULT hresult;
long ix = 0;

VariantInit(&var);
hresult = SafeArrayGetElement( args, &ix, &var);
if(FAILED(hresult)) return hresult;
/*** end debug ***/

CComPtr<_ObjectHandle> spHandle;
spHandle.p = g_host.spDefaultAppDomain->CreateInstance_2(
AssemblyName,
typeName,
args);

CComVariant unwrapped;
unwrapped = spHandle->Unwrap();
if (unwrapped.vt != VT_UNKNOWN && unwrapped.vt != VT_DISPATCH)
return E_UNEXPECTED;

return unwrapped.punkVal->QueryInterface(riid, ppv);
}

I can get the contents of the args SAFEARRAY that is passed into this method into a variant -- shown in the debugger as {"abc" VT_BSTR} -- before the subsequent call to CreateInstance_2(), however, when I step into the call to CreateInstance_2(), the underlying raw_CreateInstance_2() call in mscorlib.tli blows up Cry | :((

.

Can anyone see what I am doing wrong here? I tried adding the save /*** debug ***/ code to mscorlib.tli in order to peek at the content of the SAFEARRAY being passed for activation attributes, but the debugger seems to ignore the added code...

Thanks for any insights!

--
Roy

Rama Krishna Vavilala16-May-02 14:49

16-May-02 14:49

Sometimes this may happen if you forgot to call SysAllocString to allocate the BSTR. Make sure that you are not doing anything like

VARIANT vt;
vt.vt = VT_BSTR;
vt.bstrVal = OLESTR("Test");

Check the same for other BSTR's

rkiesler17-May-02 3:19

17-May-02 3:19

The code that creates the SAFEARRAY looks like the following:

HRESULT hRes;
VARIANT Placeholder;
LPCTSTR str = session->GetString((pbstring)(pbvArgs[i]->GetString( session )));
_bstr_t bstr_val( str );
Placeholder.bstrVal = SysAllocString( bstr_val );
hRes = SafeArrayPutElement( psaArgs, &Place, &Placeholder );
if (hRes != S_OK)
{
pbrRet = PBX_E_INVOKE_FAILURE;
}
VariantClear(&Placeholder);

The SAFEARRAY is then passed to another call:

LoadCORClassEx (bstr_1, bstr_2, IID_IUnknown, (void**)&pIDispatch, psaArgs);

Do you see anything else that I might be doing wrong?

Thanks,
Roy

Rama Krishna Vavilala17-May-02 3:46

17-May-02 3:46

Are you allocating the SAFEARRAY?

rkiesler17-May-02 3:55

17-May-02 3:55

Yes, see code below:

// Declare Safe Array Boundary 
SAFEARRAYBOUND sabArgs[1];      // a One Dimensional array
sabArgs[0].cElements = size;    // # of elements in the array
sabArgs[0].lLbound = 0;         // lower bound of array

// Create the safe array
SAFEARRAY FAR* psaArgs = new SAFEARRAY;
psaArgs = SafeArrayCreate( VT_VARIANT, 1, sabArgs ); 
</p>

Rama Krishna Vavilala17-May-02 4:02

17-May-02 4:02

This is plain wrong. This is not the way you allocate a SAFEARRAY.

For creating 1 dimensional array use the following code

SAFEARRAY FAR* psaArgs =SafeArrayCreateVector(VT_VARIANT, 0, size);

Next call SafeArrayLockData

VARIANT* rgVtVals = NULL;
SafeArrayLockData(psaArgs, (VARIANT**)&rgVtVals);

Then start filling rgVtVals

Finally unlock
SafeArrayUnlockData(psaArgs);

rkiesler17-May-02 6:01

17-May-02 6:01

I could not find references to SafeArrayLockData or SafeArrayUnlockData -- did you intend for me to use SafeArrayAccessData and SafeArrayUnaccessData? Those seem to match the parameters.

--
Thanks,
Roy

Rama Krishna Vavilala17-May-02 6:10

User control in DLL problem

17-May-02 6:10

Sorry yes I mean SafeArrayAccessData and safeArrayUnaccessData

Todd Smith13-May-02 7:27

Todd Smith

13-May-02 7:27

I'm trying to get the wrox book samples working on my system:

http://www.wrox.com/ACON12H4.asp?WROXEMPTOKEN=160192ZjePJD4tgkFUWWDBumUS&ISBN=1861005644

I tried this at home on XP and at work on 2K and both of my machines produce the same error.
I can't figure out if it's an IIS configuration problem or a code problem (is an assembly requred?)

Can anyone get these samples to work?

I get the following errors when trying to run the Chapter01\CompositeControl.aspx sample:

Server Error in '/aspsc' Application.
--------------------------------------------------------------------------------

Parser Error
Description: An error occurred during the parsing of a resource required to service this request. Please review the following specific parse error details and modify your source file appropriately.

Parser Error Message: File or assembly name CompositeControl, or one of its dependencies, was not found.

Source Error:

Line 1: <%@ Register TagPrefix="Custom" Namespace="CompositeControl" Assembly = "CompositeControl" %>
Line 2: <%@ Page Language="c#" Debug="true" %>
Line 3:

Source File: F:\alchdev\Professional ASP.NET Server Controls - Building Custom Controls with C#\Chapter01\CompositeControl.aspx Line: 1

Assembly Load Trace: The following information can be helpful to determine why the assembly 'CompositeControl' could not be loaded.

=== Pre-bind state information ===
LOG: DisplayName = CompositeControl
(Partial)
LOG: Appbase = file:///F:/alchdev/Professional ASP.NET Server Controls - Building Custom Controls with C#
LOG: Initial PrivatePath = bin
Calling assembly : (Unknown).
===

LOG: Policy not being applied to reference at this time (private, custom, partial, or location-based assembly bind).
LOG: Post-policy reference: CompositeControl
LOG: Attempting download of new URL file:///D:/WINNT/Microsoft.NET/Framework/v1.0.3705/Temporary ASP.NET Files/aspsc/52a1ba08/5db97123/CompositeControl.DLL.
LOG: Attempting download of new URL file:///D:/WINNT/Microsoft.NET/Framework/v1.0.3705/Temporary ASP.NET Files/aspsc/52a1ba08/5db97123/CompositeControl/CompositeControl.DLL.
LOG: Attempting download of new URL file:///F:/alchdev/Professional ASP.NET Server Controls - Building Custom Controls with C#/bin/CompositeControl.DLL.
LOG: Attempting download of new URL file:///F:/alchdev/Professional ASP.NET Server Controls - Building Custom Controls with C#/bin/CompositeControl/CompositeControl.DLL.
LOG: Attempting download of new URL file:///D:/WINNT/Microsoft.NET/Framework/v1.0.3705/Temporary ASP.NET Files/aspsc/52a1ba08/5db97123/CompositeControl.EXE.
LOG: Attempting download of new URL file:///D:/WINNT/Microsoft.NET/Framework/v1.0.3705/Temporary ASP.NET Files/aspsc/52a1ba08/5db97123/CompositeControl/CompositeControl.EXE.
LOG: Attempting download of new URL file:///F:/alchdev/Professional ASP.NET Server Controls - Building Custom Controls with C#/bin/CompositeControl.EXE.
LOG: Attempting download of new URL file:///F:/alchdev/Professional ASP.NET Server Controls - Building Custom Controls with C#/bin/CompositeControl/CompositeControl.EXE.

--------------------------------------------------------------------------------
Version Information: Microsoft .NET Framework Version:1.0.3705.209; ASP.NET Version:1.0.3705.0

Todd Smith

Fixed

Todd Smith14-May-02 15:34

Todd Smith

14-May-02 15:34

I had my control in a subdirectory of the web root

\webroot\test\bin\mycontrol.dll
\webroot\test\mycontrol.aspx

That gave me the following error

File or assembly name MyControl, or one of its dependencies, was not found.

To fix it all I had to do was move the \bin dir to the root

\webroot\bin\mycontrol.dll
\webroot\test\mycontrol.aspx

and it worked!

Todd Smith

HTML Tags

Brandon Parker10-May-02 13:25

Brandon Parker

10-May-02 13:25

With all this emphesis on .NET and the internet. Why is there not class in the new .NET Framework to parse HTML tags?

Re: HTML Tags

Andy Smith10-May-02 13:42

Andy Smith

10-May-02 13:42

well, if you use xhtml, you can just use the built in xml namespace.

otherwise, you could use com interop to talk to ie.

How do I call a .NET web service?

10-May-02 10:30

Ok, I built a test web service using VS.NET. How do I call the web methods within this service remotely? I want to call the service from a machine with no .NET Framework or IDE installed.

Previously I used Microsoft's SOAP Toolkit to create a web service from an existing com object. It was easy to call the service in vb script by creating a soap client object, all I need to know was the url of the .wsdl file for the service.

But there is no .wsdl file in my .NET web service project. How do I access this service? Please help.

Thanks.

Re: How do I call a .NET web service?

David Salter14-May-02 9:43

David Salter

14-May-02 9:43

You can use the SOAP toolkit for this also.

You access the WSDL by sticking ?WSDL onto the end of the URL

e.g. http://localhost/webservice.asmx?WSDL

Dave.

Re: How do I call a .NET web service?

16-May-02 23:53

Thanks. I already tried that. The problem is, SOAP toolkit doesn't seem to be compatible with .NET web service. I always got an error saying something like "SoapPort failed, etc.". Cry | :((

Re: How do I call a .NET web service?

Mike.NET17-May-02 9:02

Mike.NET

17-May-02 9:02

Not sure it this is what you are looking for, but you could invoke web service method(s) via HTTP GET or POST.

Mike M
WinInsider.com

.Net Fram work Setup

Gaurika Wijeratne9-May-02 19:47

Gaurika Wijeratne

9-May-02 19:47

Hi Is it Possible to Create a Setup From VS.Net , to Setup the .Net Fram work it self?

Thanks.
Gaurika.

Gaurika Wijeratne. // www.gaurika.com

Re: .Net Fram work Setup

James T. Johnson9-May-02 20:09

9-May-02 20:09

If you are familiar with Windows Installer (.msi files) there is a merge module you can use to install the framework.

Unfortunately, I'm not familiar with Windows Installer so I have no idea what you do with it Cry | :((

James

Simplicity Rules!

What is the Fastest.

Gaurika Wijeratne9-May-02 16:57

Gaurika Wijeratne

9-May-02 16:57

Wht is the Fastest from vb.net, c# and Managed C++ ?

Gaurika Wijeratne. // www.gaurika.com

Re: What is the Fastest.

James T. Johnson9-May-02 17:32