Visual Basic Discussion Boards

Tom John15-Dec-04 5:44

15-Dec-04 5:44

Homework question right?

OK, without giving you the complete solution think about the following:

To work out the remainder as you have discovered yourself (i am assuming) you can use the Mod operator[^]. So if you have worked out there are 17829 pennies and you want to work out the number of £50 notes and the remainder:

Dim fiftyNotes As Integer = 17829 \ 5000<br />
        Dim fiftyRemainder As Integer = 17829 Mod 5000

That should get you started.

Hope it helps

Tom

Re: Mod Operator Help PLEASE...

stingerj15-Dec-04 6:41

stingerj

15-Dec-04 6:41

please explain a little bit more in detail...

your stating
dim intfiveDollars as integer = 500 \100

er not sure... I really dont understand this mod thing.

I have text boxes coming in from quarters, dimes, nickles, pennies.

and labled for output that show the relativity of $10, $5, $1, quarters, dimes, nickles and pennies.

so if i have 100 pennies I should show 1 in the $1.00 label or if I have 100 pennies 2 dimes and 3 nickles I should show 1 in the $1.00 label 1 in the quarter label and 2 in the nickle label.

so nobody can help me....

stingerj15-Dec-04 11:22

stingerj

15-Dec-04 11:22

please I need assistance only have 2 hours left. If i can just have someone get me started with this maybe I can finish it... but I'm totally lost..

Re: so nobody can help me....

Dave Kreskowiak15-Dec-04 12:26

Dave Kreskowiak

15-Dec-04 12:26

If your totally lost at this point, you're totally screwed. Tom already gave you the starting point...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: Mod Operator Help PLEASE...

santosh jaiswal 200415-Dec-04 18:22

santosh jaiswal 2004

15-Dec-04 18:22

Mod operator gives u the remainder

suppose

if u are doing

10 mod 3 the output will be 1
10 mod 2 will give u 0

mod operator can be used only on integer datatype.

MS Project integration

Black Jellyfish15-Dec-04 1:11

Black Jellyfish

15-Dec-04 1:11

I have integrated Pivotal, CRM software, with Microsoft Project using VS .Net. However, it does not seem to work 100%. I have been trying to find any other examples, coding that other people have done with MS Project. Basically all information is based in Pivotal, the front end system, and pushed into MS Project.

If anyone knows about MS Project integration or where I can find some nice good examples, let me know pls!

Ta.

DataGrid/Xml File

Makniteasy14-Dec-04 22:06

Makniteasy

14-Dec-04 22:06

I am working on a project called checkbook.I have an xml file called checkbook.xml in a file called checkbook. I also have a datagrid on my form called DataGrid1.
My xmlfile looks like this:

<itemid>0
<checknumber>1533
<payee>Kmart
<amount>55.23
<date>11/12/2004

When I run my program my datagrid already shows what is in the xml file because I am using streamreader. How can I get The information entered in the datagrid by the user to save back to my xml file upon program close so it will be there the next time the program is opened.

This is the code that I have so far:

Imports System.Xml
Imports System.IO
Imports System.Data

Public Class Form1
Inherits System.Windows.Forms.Form
Public myxmlfile As String = "c:\checkbook\checkbook.xml"
Public ods As DataSet
Public nds As DataSet

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Try

Dim ods As New DataSet
Dim myStreamReader As New System.IO.StreamReader(myxmlfile)
ods.ReadXml(myStreamReader)
myStreamReader.Close()
Me.DataGrid1.DataSource = ods.Tables(0)
Me.DataGrid1.FlatMode = True
Me.DataGrid1.Expand(-1)
Me.DataGrid1.ColumnHeadersVisible = True

Catch ex As Exception
MsgBox(ex.ToString)

End Try

End Sub

End Class
Thanks For The Help

Re: DataGrid/Xml File

Gavin Jeffrey15-Dec-04 1:22

Gavin Jeffrey

15-Dec-04 1:22

Couldn't you just use the writeXml method of the dataset?

Re: DataGrid/Xml File

Makniteasy15-Dec-04 19:33

Makniteasy

15-Dec-04 19:33

Yeah but everytime I use streamwriter it says that my xmlfile is missing a root element. what is that?

Re: DataGrid/Xml File

Dave Kreskowiak16-Dec-04 4:14

Dave Kreskowiak

16-Dec-04 4:14

The error shows up because you have a completely malformed XML file:

<table>
0
1533
Kmart
55.23
11/12/2004
</table>

Your XML should look more like this:

<?xml version="1.0" encoding="utf-8" ?>
<Accounts>
    <CheckingAccount>
        <Transactions>
            <Transaction ID="0">
                <CheckNumber>1533</CheckNumber>
                <Payee>Kmart</Payee>
                <Amount>55.23</Amount>
                <TransDate>11/12/2004</TransDate>
            </Transaction>
        </Transactions>
    </CheckingAccount>
</Accounts>

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: DataGrid/Xml File

Makniteasy15-Dec-04 19:34

Makniteasy

15-Dec-04 19:34

Yeah but everytime I use streamwriter it says that my xmlfile is missing a root element. what is that?

Re: DataGrid/Xml File

Gavin Jeffrey19-Dec-04 19:39

Gavin Jeffrey

19-Dec-04 19:39

What Dave says is true your xml structure is very poor (no offense - it just is). Every valid xml document should have a root element that contains all the other elements - at the moment you only have the root element which isn't allowed to contain anything but other elements. So if you did something like <myxml>...

it would work (the saving part anyways).

check out this tutorial (it isnt too long and it explanes pretty much everything you need to know about xml) - http://www.w3schools.com/xml/default.asp[^]

Re: DataGrid/Xml File

Gavin Jeffrey19-Dec-04 19:43

Gavin Jeffrey

19-Dec-04 19:43

hmm thats strange for some reason my post didn't come out as I wrote it - the xml example that I give should be like this <myroot>...

How to get focus in DateTime Picker control

manivannan.p14-Dec-04 20:25

manivannan.p

14-Dec-04 20:25

Try this:
1. drag and drop a textbox ctrl, a button and a Datetime picker.

2. run the application and press tab . u can see the focus in each control including DTpicker.

3. Just select another date in the dattime picker using that combo.

4. now press tab , u will see that DTPicker doesnt receive the focus....

help me if u can brin the focus ....

regards, Mani

accessing ip packets using VB.NET

mats_mathai14-Dec-04 20:13

mats_mathai

14-Dec-04 20:13

hi,
i would like to know how an application developed in VB.NET can access ip packets. ie the fields in ip packets. and manipulate the ip packets.

Re: accessing ip packets using VB.NET

Dave Kreskowiak16-Dec-04 4:24

Dave Kreskowiak

16-Dec-04 4:24

The .NET Framework doesn't have any classes that will allow you to do this natively. You'll need a device driver that will do the "dirty" work for you and it must expose an API that you can P/Invoke using VB.NET to get the information you need.

You can pick up the book "Network Programming in .NET" for a complete discussion and examples. Or you can search the web for "Packet sniffing .NET" and piece the information together yourself.

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

putting an event procedure subroutine into a different event procedure

mpiotro14-Dec-04 10:49

mpiotro

14-Dec-04 10:49

In .net, I am reading in a text file, line by line. Each line represents the file path for a picture I'd like to show. What I am trying to do is change the picture each time a user clicks the button.

For example, lets say I've got something like this:

Private Sub Form2_Load
If Button1.Click = 1 Then
PictureBox1.Visible = True
PictureBox1.Image = System.Drawing.Image.FromFile _
(string1(y))
End If
I know I can't do button1.click like this, but is there another way?
Basically, I want the if condition to check if the button has been clicked or not.

Thanks for any help or direction,

Mike

Re: putting an event procedure subroutine into a different event procedure

Dave Kreskowiak16-Dec-04 4:28

Dave Kreskowiak

16-Dec-04 4:28

There is no "if" condition to check to see if the button was clicked. You simply put the code in the Click event handler of the button. Go to the form designer window and double-click on the button you want to add the code to. The code editor will come up with a blank event handler function for that button. All you need to do is add the code:

PictureBox1.Visible = True
PictureBox1.Image = System.Drawing.Image.FromFile _
(string1(y))

You'll also need some code in here to increment the value of y and check to see that it doesn't exceed the bounds of the array string1().

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

Re: putting an event procedure subroutine into a different event procedure

mpiotro16-Dec-04 12:51

mpiotro

16-Dec-04 12:51

Thanks for the feedback Dave. However, my application is a little bit different. In the main program, I am using streamreader to read in a text file line by line. Each line is a file path to a jpeg picture. In my loop of reading the file, I dont want the streamreader to read the next line until the user presses the button. Somehow I think I need to monitor if the button has been clicked or not within the streamreader loop. Maybe there's an easier way, I dunno.....

-Mike

Re: putting an event procedure subroutine into a different event procedure

Dave Kreskowiak17-Dec-04 2:06

Dave Kreskowiak

17-Dec-04 2:06

You're actually trying to do it the hard way. You can monitor for the click, but you can't do it reliably. Your loop can execute multiple iterations if the user holds the button down for even 1 second.

Since, from your first post, your reading the filepaths into a String array, just read them all in. You really shouldn't be holding open resources like your trying to do. It's very bad practice.

Once you have all the filepaths in the array, you can setup a counter that points to the first index in the String array and you call a function to load and display the image it's pointing to. When the user clicks the button, you increment the counter, check to majke sure it hasn't overflowed, then call the function to load and display the image.

Actually, it'd be easier to write a class to encompass this functionality. But that's an entirely different discussion...

RageInTheMachine9532
"...a pungent, ghastly, stinky piece of cheese!" -- The Roaming Gnome

yes/No column in Datagrid??

mittalpa14-Dec-04 8:31

mittalpa

14-Dec-04 8:31

Hi In Windows datagrid, one of the column is a boolean column, in which, user don't want to see True/False. They want to see Yes/No.
Similar, kind of requirement is when another column is bind with a checkbox. They don;t want checked or unchecked box in the column.

How can I display just Yes or No in Boolean column in types of cases? Please advice. Thanks

Pankaj

Follow your goals, Means will follow you ---Gandhi---

Re: yes/No column in Datagrid??

mtone21-Dec-04 3:41

mtone

21-Dec-04 3:41

Where is the source coming from? Change the columns datatype to a string and edit the source to be yes/no depending on its boolean value. Reverse it when saving.

printing stripchart on a windows form

kbbabb14-Dec-04 6:59

kbbabb

14-Dec-04 6:59

I'm new to this and am acquiring two channels of voltage data through a DAQ using a windows form application. I have a stripchart showing the progression of the data over time, and would like to print the stripchart object in its entirety. If that means printing the entire window, I can be happy with that.

Any pointers to get me going in the right direction would be much appreciated. If any of you have used SoftWIRE in VS.NET and Measurement Computing boards to do this, please speak up! Smile | :)

Thanks,
Kirk

Update (12:16pm CST):
I've just found the MSDN VB code for printing a form, at:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dv_vbcode/html/vbtskCodeExamplePrintingForm.asp[^]

Is there a way to print the contents of the stripchart alone?

Free Grid and charting controls for VB.NEt

JHAKAS14-Dec-04 2:22

JHAKAS

14-Dec-04 2:22

Hello to all

Kindly provide me link to free charting and grid controls to be used along with VB.NET

Leave your mark wherever you go

Re: Free Grid and charting controls for VB.NEt

Tom John14-Dec-04 2:37

Tom John

14-Dec-04 2:37

Similar posting a week or so ago regarding charting:

Graph Controls[^]

Also have a search through the articles on this site... there's lots and i am sure one or two should be suitable to your needs.

Hope this helps

Tom

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.