Visual Basic

Re: How do you Split Intallation files -VS2005?

9-Nov-06 20:56

Hi
I want to email someone my app, and have created a standard Setup.exe from VS2005. I also included that the setup check the Framwork (Prereqisites) and includes Dotnetfx.exe (Which is 22MB). I want to include this so since I'm not sure they wil be able to update to Dot Net Framework 2 from the web. Is there a way of splitting the installation files into smaller sets of files so that I can mail them (*.cab files??)

Cheers

Richard

Dave Kreskowiak10-Nov-06 2:36

Re: How do you Split Intallation files -VS2005?

10-Nov-06 2:36

You can put all your files into a ZIP file. Then Google for "file splitter[^]" and you'll find a bunch of utilities to split the file into any size chunks you want. You'll have to send both the splitter utility, so the client can put the file back together!, and the individual file segments.

Dave Kreskowiak
Microsoft MVP - Visual Basic

RichardBerry10-Nov-06 2:50

Re: How do you Split Intallation files -VS2005?

10-Nov-06 2:50

Thanks Dave - I take it then that there is no way to create a set of install files from VS2005 (i.e. like in the old days when applications were installed from a set of stiffies (such fun...)

Dave Kreskowiak10-Nov-06 13:47

Try Catch - Best Practice - How much code should be inside

10-Nov-06 13:47

There's still a Setup and Deployment project, but only if your using the Professional version or above.

Dave Kreskowiak
Microsoft MVP - Visual Basic

RichardBerry9-Nov-06 20:49

Re: Try Catch - Best Practice - How much code should be inside

9-Nov-06 20:49

Hi

1) How does a try catch block function? Could you relate it in any way to the following:

If (exception occurs while doing something) then

Goto Catch

else

Contine executing

Endif

2) What is good practice with respect to the amount of code inside a Try .. Catch Block. Is it bad to have a lot of code (why?) and is is bad to call another procedure from withing a Try Catch Block

Cheers

Richard

Cmania9-Nov-06 22:03

Re: Try Catch - Best Practice - How much code should be inside

9-Nov-06 22:03

Hi dear
I think u r trying to catch errors in VB inside some procedure
If it is so then use following code

Option Explicit<br />
Private Sub Form_Load()<br />
On Error GoTo catch<br />
Dim x As Integer<br />
x = "abc"<br />
Exit Sub<br />
catch:<br />
MsgBox "Caught U! Integer cant take String value"<br />
End Sub

If it isnt so ignore the reply
Bye

pitchu

Guffa10-Nov-06 0:02

Guffa

10-Nov-06 0:02

RichardBerry wrote:
1) How does a try catch block function? Could you relate it in any way to the following:

If (exception occurs while doing something) then

Goto Catch

else

Contine executing

Endif

Well, have a you look at a Try...Catch with multiple catches and a Finaly block:

Try
	... do something that might fail
Catch IOException ex
	... handle the specific exception
Catch Exception ex
	... handle all other .NET exceptions
Catch
	... handle any other exception
Finally
	... always runs
End Try

If any exception is raised in the Try block, execution immediately goes to the first Catch block where the type of the exception matches. An IOException would be handled by the Catch IOException block, but an ArgumentNullException would be handled by the Catch Exception block (as ArgumentNullException inherits from Exception). If you are calling an external library it might throw non-.NET exceptions, they would go to the Catch block.

The Finally block is used to make sure that anything used in the Try block is closed and disposed properly. The Finally block always runs, regardless if there was an exception or not.

RichardBerry wrote:
2) What is good practice with respect to the amount of code inside a Try .. Catch Block. Is it bad to have a lot of code (why?) and is is bad to call another procedure from withing a Try Catch Block

There are two uses for Try...Catch blocks; wide and narrow. A wide block can be used to handle any exceptions from an entire application, or from a section of an application. A narrow block should be used to handle the specific exceptions that you anticipate might occur, and they should surround as little code as possible.

You can't write code to specifically handle any exception that possibly can occur, so use narrow blocks to catch the ones that you anticipate, and wide block to catch anything unexpected.

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b { font-weight: normal; }

Re: Try Catch - Best Practice - How much code should be inside

RichardBerry10-Nov-06 2:48

10-Nov-06 2:48

Thank You - Nice Answer!

Create Folder

Sinchan Nikam9-Nov-06 20:05

Sinchan Nikam

9-Nov-06 20:05

Hi All
Please healp me
I want to creat a automatic or in button click new folder at run time
i have using VB 6.0
Thank you!!!!!!!!

Re: Create Folder

Cmania9-Nov-06 21:53

Difference between Chr() and Chr$()

9-Nov-06 21:53

Hi Suppose u wanna create folder namely wasim in c:\ directory paster this code in click event

Private Sub Command1_Click()<br />
MkDir ("c:\wasim")<br />
End Sub

Hope answer to the question
bye

pitchu

Cmania9-Nov-06 18:28

9-Nov-06 18:28

Hi Cant get diffrence between chr()and chr$()in VB6
Similar is case with other flavours like
left and left$, etc
hope to get some reply soon
bye

pitchu

Dave Kreskowiak10-Nov-06 2:17

10-Nov-06 2:17

That's because there is no difference! The $ functions are identical to the non-$ versions. The $ are preserved for backwards compatibility to previous versions of VB and older BASIC language standards.

Dave Kreskowiak
Microsoft MVP - Visual Basic

nlarson1110-Nov-06 3:47

nlarson11

10-Nov-06 3:47

Dave,

My understanding of the $ sign is telling VB that you know that want a string returned. If you leave the $ sign off, VB has to evaluate what datatype it needs to convert it to when placing it in the variable(or whatever) that will hold the value. If your wrong and the variable is not type of string VB will convert it appropriately for you(if possible) but if your right it doesn't have to do an implicit conversion.

Nathan

Dave Kreskowiak10-Nov-06 6:00

10-Nov-06 6:00

Not quite. Chr returns a string, period. There is no evaluation of the return value or implicit conversions by the function There is no difference between Chr and Chr$. The dollar sign is just a hold over form the old days of BASIC.

Wanna see? Chr docs[^]...Left docs[^]

Dave Kreskowiak
Microsoft MVP - Visual Basic

Cmania12-Nov-06 19:10

converting VS2003 created sample to VS2005 giving debugger error

12-Nov-06 19:10

Thnks Dave
I do have studied BBC BASIC Language and was somewhat sure that it might be used for compatibility
Once more Thnks
bye

pitchu

GnanaprakashJebaraj9-Nov-06 17:43

GnanaprakashJebaraj

9-Nov-06 17:43

After converting VS2003 created sample to VS2005.we try to debug the application It gives the debugger error.

For example download this sample and try to run

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnexcl2k2/html/odc_xlrtdvbnet.asp

This application open's an Excel.In Excel formula bar paste the following formula

=RTD("Stock.Quote", , "MSFT", "Open")
=RTD("Stock.Quote", , "MSFT", "Last")

formula will return some random value in Excel.For this sample I was able to debug and run in VS2003 but in VS2005 Iam getting debugger error.

Thanks,
Prakash

combo box getting a PK from a selected item

steve_rm9-Nov-06 17:28

steve_rm

9-Nov-06 17:28

Hello

I have a combo box with a list of clients. I need to do search on the the PK to get the details of the client. This worked fine, however the customer wants the combo box to be in sorted order. So i set the property for the combo box to sorted. Now that I have done that the client names are in order but do not corrspond to the value member. In the database the clientID is indentity incremented integer.

<br />
Me.cboClients.DataSource = ds1.Tables(0).DefaultView<br />
<br />
Me.cboClients.DisplayMember = "Name"<br />
Me.cboClients.ValueMember = "ClientID"<br />

in the selectionchangedcommitted event i have this

<br />
client = Me.cboClients.SelectedValue()<br />
'calls procedures to search for client's details<br />

Is there an easy way to get a PK value form a client that is selected from the combo box. I can't search for the client name, as some clients have the same name. Not unique.

Many thanks in advance,

Steve

Re: combo box getting a PK from a selected item

Dave Kreskowiak10-Nov-06 2:19