Devexpress Quantum Grid Search - Visual Basic Discussion Boards

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

mpiotro16-Dec-04 12:51

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

Devexpress Quantum Grid Search

VBDuncan14-Dec-04 1:24

VBDuncan

14-Dec-04 1:24

Dear friends!
Does anyone know or even have tried to add "Find" form (like ctrl+F in Excell) in this grid? I would be very thankful for any help!!!

Multiple Return Types

nitin_ion14-Dec-04 0:35

nitin_ion

14-Dec-04 0:35

Is there any way that I can have multipule return Type for a function e.g. Function A can returns both Boolean and String or Integer.

Re: Multiple Return Types

Tom John14-Dec-04 1:12

Tom John

14-Dec-04 1:12

No, you cannot overload a procedure by only changing it's return type:

Rules of Procedure Overloading - MSDN[^]

However you can pass add additional parameters by reference (ByRef rather than the default ByVal) that are modified within the function and available in the calling code, the Graphics.MeasureString function is overloaded in this way to return the number of lines and characters fitted in addition to the return type of SizeF:

Graphics.MeasureString - MSDN[^]

Hope this helps.

Tom

Open Dialog Initial Directory

kenexcelon13-Dec-04 17:29

kenexcelon

13-Dec-04 17:29

How do you set the initial directory to my documents for Windows XP?

thanks

Re: Open Dialog Initial Directory

Tom John13-Dec-04 22:08

Tom John

13-Dec-04 22:08

kenexcelon wrote:
How do you set the initial directory to my documents for Windows XP?

Me.FolderBrowserDialog1.SelectedPath = Environment.GetFolderPath(Environment.SpecialFolder.Personal)
Me.FolderBrowserDialog1.ShowDialog()

Hope this helps

Tom

Re: Open Dialog Initial Directory

kenexcelon14-Dec-04 8:34

kenexcelon

14-Dec-04 8:34

Thanks a bunch. Worked like a charm.

Me.dlgOpen.InitialDirectory = Environment.GetFolderPath(Environment.SpecialFolder.Personal)

Can you believe my vb teacher took off 20 points from my Word Processor project just because it didn't open from My Documents intitally. I think that was really steep.

How do u make a button link to a website?

Shrex13-Dec-04 10:25

Shrex

13-Dec-04 10:25

Hi guys,

i'm a beginner and my question might sound stupid but I have a button on my form and i want it to link to a website, how do i do it?

Re: How do u make a button link to a website?

Mekong River13-Dec-04 17:13

Mekong River

13-Dec-04 17:13

Try the following code in your button click event:

System.Diagnostics.Process.Start("http://www.thecompanyname.com")

A thousand mile of journey, begin with the first step.

APO-CEDC
Save Children Norway-Cambodia Office

Add zero to the front of a number

viettho13-Dec-04 8:27

viettho

13-Dec-04 8:27

Hi, i'm doing a project and I need to add 0 to the front of a number. Is there a way to format a number?

for example: 898 become 000898

If anyone could help me, I would appriciate.
Thank you.

Re: Add zero to the front of a number

Dennis C. Dietrich13-Dec-04 11:45

Dennis C. Dietrich

13-Dec-04 11:45

viettho wrote:
Hi, i'm doing a project and I need to add 0 to the front of a number. Is there a way to format a number?

for example: 898 become 000898

I assume you have some kind of variable where you store your number. Let's also assume this variable is an Int32 (Integer in Visual Basic). The easiest way is to use the method Int32.ToString(String)[^] and pass an appropriate NumberFormatInfo[^].

Dim myInt As Integer = 898
MessageBox.Show(myInt.ToString("D6"))

Best regards
Dennis

Re: Add zero to the front of a number

viettho13-Dec-04 12:04

viettho

13-Dec-04 12:04

thank you..it works.

Re: Add zero to the front of a number

Tom John13-Dec-04 22:22

Tom John

13-Dec-04 22:22

An alternate solution is to use the format function to ensure a number has an enforced number of characters:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vblr7/html/vafctFormat.asp[^]

Dim i As Integer = 898
MsgBox(Format(i, "00000#"))

Hope this helps

Tom

Re: Add zero to the front of a number

OICU81215-Dec-04 17:08

OICU812

15-Dec-04 17:08

Example:

Dim X As Integer = 827
TextBox1.Text = Format(x, "000000").ToString

UPLOAD CONTROL - HELP HELP - WHICH?

Purple Monk13-Dec-04 6:15

Purple Monk

13-Dec-04 6:15

Hi all,

Here's a quick question (well not that quick).

I have a drag and drop file upload control and am having an issue with the winsock control. Everything works fine on my LAN but nothing seems to work over the internet, the remote server keeps disconnecting, winsock error 10054 if anyone knows it.

As this became of great annoyance I have now coded the upload part in WinHTTP, Inet and finally xmlHttp30.

Note that the receiving end is written in ASP.NET and using a filestream to write the obtained stream to a file so all of the above methods work just fine (winsock only over LAN however).

The problem with the three later methods is that i cannot display the progress of the data sent as there are no events that i can see that display how much is sent and how much is to go (byte count).

In conclusion, what i need is either a way to stop the Winsock error occuring or another control that i can report back to the UI with the progresss?

Any ideas?

Any help greatly appreciated.

Print MsChart in VB.Net

Brightday13-Dec-04 5:19

Brightday

13-Dec-04 5:19

Is there anyone know how to print a mschart in vb.net? Please help.

Thanks.

Re: Print MsChart in VB.Net

Mekong River13-Dec-04 17:16

Mekong River

13-Dec-04 17:16

Do you want to print with the content of the for or not? If not (just print the chart) try to do it in crystal report instead.

A thousand mile of journey, begin with the first step.

APO-CEDC
Save Children Norway-Cambodia Office

Re: Print MsChart in VB.Net

Brightday14-Dec-04 3:35

Brightday

14-Dec-04 3:35

Yes, I want to print with contents. Any suggestion?

Thanks.

Re: Print MsChart in VB.Net

Mekong River14-Dec-04 11:04

Mekong River

14-Dec-04 11:04

Let try this code.[^]

A thousand mile of journey, begin with the first step.

APO-CEDC
Save Children Norway-Cambodia Office

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