Re: class problem - Visual Basic Discussion Boards

Error while displaying combobox in datagrid

Thirumalaraj21-Dec-04 2:32

21-Dec-04 2:32

hi,
I placed a combobox in datagird, it is displaying the data, but when i click in the new cell also it is displaying the combobox, but when i select the value from the combobox, that value is not storing in the current cell. when u click in someother cell that cell is going to be blank. but in the cell where already having the value if u click, it is showing the combobox, and even if we select another value that value is storing in the cell. and even i want to add a new value to the combobox.

pls tell me,
it is very urgent.
Thanks in advance.
Thiru.

Re: Error while displaying combobox in datagrid

mtone21-Dec-04 3:59

mtone

21-Dec-04 3:59

What?
Is this an ASP.NET datagrid or a Windows Form datagrid?
Start again with the combobox. How are you placing it in a datagrid? how are you loading the combobox items? How are you loading the datagrid?What is the new cell that is also displaying the combobox?What is your goal for the grid and having the combobox? Are you getting errors? Show some error messages or some code?

Re: Error while displaying combobox in datagrid

Thirumalaraj21-Dec-04 16:46

Thirumalaraj

21-Dec-04 16:46

sorry it is a windows form datagrid. retrieving data from sql server. i placed combobox in datagrid. the data which is backend from one of the field is displaying in combobox, but when i am adding new row in grid, it is not placing the value in grid from combobox. and even i want to add new value in the combobox. It is not giving any error.
Thank you for trying,
bye

I use Winsock to make a simple chat program but!!!

BlitzBall21-Dec-04 2:12

BlitzBall

21-Dec-04 2:12

there's error, "Wrong protocol or connection state for the requested transaction or request - Error number: 40006" --the failed line is Winsock1.SendData (Txtinput.Text)-- can u give me a hint Thank you

Re: I use Winsock to make a simple chat program but!!!

Dave Kreskowiak21-Dec-04 3:13

Dave Kreskowiak

21-Dec-04 3:13

Without more information, like what version of VB your using, or even the code that is setting up and opening the connection, it's impossible to tell you, with any certainty, what's wrong.

But, on the assumption your using VB6, I'll point you at PRB: SendData Method Generates Error 40006[^] on MSDN. It's probably what your doing wrong.

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

class problem

Fu Manchu21-Dec-04 2:08

Fu Manchu

21-Dec-04 2:08

hi all,

trying to understand classes but come up with this problem Confused | :confused:

'how can i access this class, without putting a timer of the form, i.e the control has its own timer

Private Class clock
Inherits Timer

PublicFunction systemtime()
If Me.Enabled = FalseThen ' enable timer if not already
Me.Interval = 500 ' 1/2 secs
Me.Enabled = True
EndIf
systemtime = Now.Second 'get system second, cant be anthing just example.
EndFunction

PrivateSub Test_Tick(ByVal sender AsObject, ByVal e As System.EventArgs) HandlesMyBase.Tick ' on tick run the function

systemtime()

End Sub

End Class

Friend Class Count

Dim test As New clock

Dim timer1 As New clock

Public Function displaytime() As String

displaytime = timer1.systemtime

End Function

End Class

PrivateSub Form1_Load(ByVal sender AsObject, ByVal e As System.EventArgs) HandlesMyBase.Load

Dim test As New Count
'********* problem here************ Cry | :((

'because this is only run once
Label1.Text = test.displaytime() 'this only happens once

End Sub

EndClass

'is there a way of running this class and passing the data to the label withing the timer class?

Happy Xmas to all!
From
Shortcircuit Software!

Re: class problem

Tom John21-Dec-04 4:19

Tom John

21-Dec-04 4:19

You need to have an event that is fired by your class when the time changes or whatever it is you want to display, the form can then handle this and update the label:

Public Event UpdateTime As EventHandler

So to fire the event:

Protected Overrides Sub OnTick(e As EventArgs)
         Me.SystemTime

         'Some sort of test to see if you want to fire the event
         If IsChristmas Then
             RaiseEvent UpdateTime(me, EventArgs.Empty)
         End If
End Sub

Then in on the form:

Private Sub Clock_UpdateTime(e as EventArgs, sender as Object) Handles Clock.UpdateTime
    Label1.Text = Clock.DisplayTime
End Sub

Hope this helps

Tom

Re: class problem

Fu Manchu21-Dec-04 22:52

Fu Manchu

21-Dec-04 22:52

Thanks for your help, i needed further info but you lead me in the right direction

i came up with this.... (this works!).....

Private WithEvents timer As Clock = New Clock

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Label1.Text = timer.systemtime
End Sub

Private Sub timer_UpdateTime(ByVal sender As Object, ByVal e As System.EventArgs) Handles timer.Tick
Label1.Text = timer.systemtime
End Sub

Public Class Clock
Inherits timer
Public Event UpdateTime As EventHandler

Private Sub Test_Tick(ByVal sender As Object, ByVal e As System.EventArgs) Handles MyBase.Tick
systemtime()
End Sub
Public Function systemtime()
If Me.Enabled = False Then
Me.Interval = 125
Me.Enabled = True
End If
systemtime = Now.Second
RaiseEvent UpdateTime(Me, EventArgs.Empty)
End Function

End Class

Thank you and have a Merry Xmas

Andy

How to make cmdbuttons reacting on different PC?

HuDcHeI21-Dec-04 2:04

HuDcHeI

21-Dec-04 2:04

i need to control 2 cmdbuttons between 2 Lan-PC . Can u give me some advices plz such as Tool , Component or Code . Thx

How to make cmdbuttons reacting on different PC?

Anonymous21-Dec-04 2:04

Anonymous

21-Dec-04 2:04

i need to control 2 cmdbuttons between 2 Lan-PC . Can u give me some advices plz such as Tool , Component or Code . Thx

Re: How to make cmdbuttons reacting on different PC?

Dave Kreskowiak21-Dec-04 3:04

Dave Kreskowiak

21-Dec-04 3:04

You going to have to be alot more descriptive than that. What do you mean by "control"? Are you saying that you want one PC to click on button on another PC?

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

Re: How to make cmdbuttons reacting on different PC?

HuDcHeIs22-Dec-04 5:08

HuDcHeIs

22-Dec-04 5:08

i mean ,if the cmdbutton on my computer clicked ,it would affect to the cmdbutton on your computer , which component should i use ? can u give me some advise .

Re: How to make cmdbuttons reacting on different PC?

Dave Kreskowiak22-Dec-04 11:57

Dave Kreskowiak

22-Dec-04 11:57

There isn't any one component. It's not a simple matter of sending a little message to the other machine. You're talking about writing your own little version of PCAnywhere. You'll need to write a server piece, which runs on the computer you want to control, and a client that will run on your machine. Basically, begin researching VNC clients. Search the comments in the VB and C# Forums and you'll come up with lots of mentions and links to some good VNC libraries that you can use.

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

FTP

nitin_ion20-Dec-04 23:19

nitin_ion

20-Dec-04 23:19

I am building a simple FTP client with download feature. How can i authenticate myself after providing parameters on the FTP server. This the Log In code but the problem is that it is not authenticating me.

Public Function LogIn() As Boolean
m_objClientSocket = New Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp)

Dim Ep As IPEndPoint = New IPEndPoint(Dns.Resolve(m_strRemoteHost).AddressList(0), m_intRemotePort)

Try
m_objClientSocket.Connect(Ep)
Catch ex As Exception
MessageString = m_strReply
Throw New IOException("Cannot connect to the Remote Server")
End Try
ReadReply()
If (m_intRetValue <> 220) Then
CloseConnection()
MessageString = m_strReply
Throw New IOException(m_strReply.Substring(4))
End If

SendCommand("USER " & m_strRemoteUser)
If (Not (m_intRetValue = 331 Or m_intRetValue = 202)) Then
CleanUp()
MessageString = m_strReply
Throw New IOException(m_strReply.Substring(4))
End If

If (m_intRetValue <> 230) Then
SendCommand("PASS " & m_strRemoteUser)
If (Not (m_intRetValue = 230 Or m_intRetValue = 202)) Then
CleanUp()
MessageString = m_strReply
Throw New IOException(m_strReply.Substring(4))
End If
End If

m_blnLoggedIn = True

ChangeDirectory(m_strRemotePath)
Return m_blnLoggedIn
End Function

dataset to xmlfile

Makniteasy20-Dec-04 19:57

Makniteasy

20-Dec-04 19:57

I am having trouble writing data to my xml file. I already have a StreamReader that reads the data, but when I use StreamWriter to write the data back out to the file, it writes data, but it writes blank data. It clears my file so the next time I try to run my program an error message says it can't find the origional table that was in my file before, of course thats because it isn't there now. any suggestions on what I may be doing wrong? I am writing from a form with a datagrid.

HAPPY HOLIDAYS

Re: dataset to xmlfile

Tom John20-Dec-04 22:04

Tom John

20-Dec-04 22:04

You are probably not closing the file properly after you have written to it. Have a look at the DataSet.ReadXml and DataSet.WriteXml on MSDN, both have examples of how to code it properly:

DataSet.ReadXml - MSDN[^]

DataSet.WriteXml - MSDN[^]

Hope this helps

Tom

DLL HELP

Member 158672020-Dec-04 15:58

Member 1586720

20-Dec-04 15:58

How to know the functions decleared in unknown dll file of some other software

Re: DLL HELP

Dave Kreskowiak21-Dec-04 1:11

Dave Kreskowiak

21-Dec-04 1:11

You might want to look into PE Explorer, here[^].

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

Datagrid

abo el ror20-Dec-04 15:01

abo el ror

20-Dec-04 15:01

I would like to ask how can i retrieve data from the selected row of the Datagrid.

Thank you.

Re: Datagrid

Jay Shankar20-Dec-04 16:38

Jay Shankar

20-Dec-04 16:38

Use DataGrid HitTest Method:

DataGrid.HitTest method[^]

Re: Datagrid

ScottSingleton21-Dec-04 8:10

ScottSingleton

21-Dec-04 8:10

DataGrid1.SelectedItem.Cells(0).Text

(First Column Value From Selected Row)

'Cause I'm living on things that excite me, be it pastries or lobsters or love...
I'm just trying to get by, being quiet and shy, in a world full of push and shove...
Jimmy Buffett - The Wino and I know

VB6 Simple Question I think

dougstratton20-Dec-04 10:56

dougstratton

20-Dec-04 10:56

I have a vb6 app with no forms that is run in dos window. How do I output to the window if I want to send a message. No Msgbox (I don't want things popping up)

so I want something like this

c:\ingroup
c:\You must provide a parameter with ingroupc
c:\Example ingroup /i

Something like that if possible?
thanks

Re: VB6 Simple Question I think

Dave Kreskowiak21-Dec-04 1:06

Dave Kreskowiak

21-Dec-04 1:06

VB6 couldn't target a console app. You have to call into the Win32 API to create a console and output to it. You might want to try here[^] for a couple of console classes for VB6.

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

Re: VB6 Simple Question I think

dougstratton21-Dec-04 5:27

dougstratton

21-Dec-04 5:27

Thanks I will take a look at the samples.

Do you happen to know how I pass a error level code back after terminating the code? I want to check in the batch file for errors in the code.

Thanks

I found one thing but I put it in the code and tested it and it booted me out of VB and I lost it Smile | :)

Forgot to save.

Re: VB6 Simple Question I think

dougstratton21-Dec-04 5:37

dougstratton

21-Dec-04 5:37

Also wanted to ask if there is an easier way to do this in vb.net?

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