Visual Basic

create and run process with link (vb.net2005)

9-May-09 4:43

Take a look at System.XML. You can open an existing XML document with the following code:

Dim doc as new XML.XMLdocument
doc.Load("Filename")

Now I'd advise you to make one main node that contains all your <Prozess nr=""> nodes, so you can iterate through that collection. That means you will have to change the layout of your XMLdocument.

When you've done that, just call a For Each loop like this:

For Each prozess as Xml.XmlNode in mainnode.Childnodes
...
Next

Looks a lot like TreeView doens't it? Wink | ;)

Cheers,
Zaegra

Motivation is the key to software development.

hrishiS9-May-09 2:42

hrishiS

9-May-09 2:42

hi to all,

I am creating n running an process using the code

dim p as new process
p.startinfo==path
p.start()
p.waitforexit()

my problem is when i make the path as a link. then it gives a error msg in p.waitforwxit() line saying "no procedss is associated with the process"....with noramal path it works fine...only when i give a link (say, c:\aa\calculator.lnk) it shows the error

please help me out

thanks in advance

-----------------------------
I am a beginner

Luc Pattyn9-May-09 3:06

Luc Pattyn

9-May-09 3:06

hi,

the first or only parameter for Process.Start should be a string pointing to:
- either an executable file (.EXE)
- or a document for which a file association exists (e.g. a .DOC assuming MS Office has been installed)

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

The quality and detail of your question reflects on the effectiveness of the help you are likely to get.
Show formatted code inside PRE tags, and give clear symptoms when describing a problem.

hrishiS9-May-09 3:10

hrishiS

9-May-09 3:10

thanks for the answer...
but it works with even a shortcut...n thats my requirement too
How do i achieve that?

-----------------------------
I am a beginner

Zaegra9-May-09 4:33

9-May-09 4:33

It seems I'm not thinking so clearly today, so you want to start the application linked to a shortcut?

Motivation is the key to software development.

Dave Kreskowiak9-May-09 7:19

problem related to textbox

9-May-09 7:19

Your code is not giving any time for the process to start. After you call Start, you have to wait for the process to start before you call WaitForExit. Try calling WaitForInputIdle before WaitForExit.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

nazimghori9-May-09 2:24

nazimghori

9-May-09 2:24

hello everyone

i am having 2 textboxes now i display '0' values in both textboxes at design time

at run time i change the values of it like textbox1 has value 3 now i want that textbox2 should start from 1 when i enter any numeric value in textbox 1

for this example if i enter 3 in textbox1 then textbox2 should be 1 and inrement likewise.

for that my code is:

If Val(Me.txtbox1.text) > Val(Me.txtbox2.Text) > 0 Then
                Me.txtbox2.Text = Val(Me.txtbox2.Text) + 1
            Else
                Me.txtbox2.Text = Val(Me.txtbox2.Text) - 1
            End If

but this is not working

please suggest some another code

thank you all.
Smile | :)

Re: problem related to textbox

Zaegra9-May-09 4:00

Re: problem related to textbox

9-May-09 4:00

It seems like a pretty straight-forward question, but still I don't understand what needs to be done. Please explain it again so I might understand what you're trying to do Wink | ;)

Cheers,
Zaegra

Motivation is the key to software development.

nazimghori9-May-09 4:13

nazimghori

9-May-09 4:13

suppose there are two textboxes and button1 in form

textbox1- for no of documents
textbox2-is counter

now when i type '3' in textbox1

then this count which is another textbox2 should auto generate from '1'

now when i click on button1 then this count should have value '2' and all textboxes becomes clear
i.e there should be 2 in textbox2

now when i again click on button1 then this count which is textbox2 should have value '3'and all textboxes become clear..
please suggest some code for it

hope you got me...

please help...
Smile | :)

Re: problem related to textbox

nazimghori9-May-09 4:19

nazimghori

9-May-09 4:19

Zaegra9-May-09 4:30

9-May-09 4:30

So you mean each time the button is clicked the value of TextBox2 needs to be increased by one?

Here you go:
(NOTE: Make sure the user only inserts a numeric value in TextBox1, if not, an exception will appear. Also, in the Designer set the Text Property of TextBox2 to "1")

Private Sub Button1_Click(..) Handles Button1.Click
Dim dec as Decimal = TextBox2.Text
dec+=1
TextBox2.Text = dec
End Sub

Motivation is the key to software development.

modified on Saturday, May 9, 2009 10:43 AM

what is the purpose?

Willington9-May-09 1:57

Willington

9-May-09 1:57

any one please explain the following VB code

If Not COMMON_MainForm.rsdbinfo.EOF Then
COMMON_MainForm.rsdbinfo.Edit
COMMON_MainForm.rsdbinfo!Operationtype = "MREAM"
COMMON_MainForm.rsdbinfo.Update
COMMON_MainForm.sdboperation = "MREAM"
End If

Thanks
Willington

Re: what is the purpose?

Dave Kreskowiak9-May-09 7:17

9-May-09 7:17

There's no way to know for sure with the tiny snippet you posted, but it looks like it's modifying records in a recordset.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Help Needed

DarkSorrow388-May-09 7:58

DarkSorrow38

8-May-09 7:58

I am doing a 200 marks project. However I have encountered some problems.
(1) I am using LINQ command to delete an entry from database in my application. After the code block is executed that particular entry is deleted from database however the binding navigator control or my application doesnot acknolodge the change. I tried to acknolodge the change by refreshing and/or updating the form and/or control.
(2) I also want to how to count total number of entries present in the database and the index of the current selected entry dynamically. After deleting or adding an entry the change is not acknolodged.
(3) I am doing a hardware project where I use a service which when activated will get my COM port(serial port) in passive open state. I am achieving this by creating a infinite for loop. However by doing this whenever my I start the service I am not able to use rest of application. I plan to overcome this problem by using threading. I plan to use one thread for the service but don't know if I should use thread for other elements. I only have one service in my application. I have no idea with any aspect of threading. Please guide me in this issue. I have a doubt if the signal arrives when the thread is not in focus then would the signal be lost.
Please guide me for these issue.

Re: Help Needed

Dave Kreskowiak8-May-09 8:58

8-May-09 8:58

First, without seeing any code, it's very difficult to say what you did wrong.

But, I'll take some guesses.

Ishaan Karnik wrote:
(1) I am using LINQ command to delete an entry from database in my application. After the code block is executed that particular entry is deleted from database however the binding navigator control or my application doesnot acknolodge the change. I tried to acknolodge the change by refreshing and/or updating the form and/or control.

This is probably because you bypassed the dataset/datatable the controls are bound to and made the changes directly to the database. You'd have to refresh the dataset/datatable, or whatever collection you used so it retrieves the new data from the database.

Ishaan Karnik wrote:
(2) I also want to how to count total number of entries present in the database and the index of the current selected entry dynamically. After deleting or adding an entry the change is not acknolodged.

Again, you bypassed the local collection of records when you made the update.

You can get the current number of records from the DataSet/DataTable or collection that you used to hold the data. There are Count and Length properties you could use to determine this.

The currently selected record would be available from the BindingNavigator you have setup.

Ishaan Karnik wrote:
(3) I am doing a hardware project where I use a service which when activated will get my COM port(serial port) in passive open state. I am achieving this by creating a infinite for loop. However by doing this whenever my I start the service I am not able to use rest of application.

Your description doesn't make sense. Are you saying that you're running your application as a service?? This is a REALLY bad idea. If not, then did you launch your actual work under a seperate thread in the services OnStart event? (This is where some code small code snippets would help a lot!)

Ishaan Karnik wrote:
I plan to use one thread for the service but don't know if I should use thread for other elements.

What other elements?? What is this service supposed to do??

Ishaan Karnik wrote:
I have a doubt if the signal arrives when the thread is not in focus then would the signal be lost.

COM port communucation is buffered, so it's unlikely that you'll lose anything.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: Help Needed

Wes Aday8-May-09 11:34

Wes Aday

8-May-09 11:34

You, sir, get a 5 just for attempting to sort that out. Thumbs Up | :thumbsup:

Why is common sense not common?
Never argue with an idiot. They will drag you down to their level where they are an expert.
Sometimes it takes a lot of work to be lazy
Individuality is fine, as long as we do it together - F. Burns

Help humanity, join the CodeProject grid computing team here

Re: Help Needed

Dave Kreskowiak8-May-09 12:06