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i meant a null value , when you have a null value in a field in the database & you try to get this field to your application in a textbox it dosen't want to
try to be good if you can't be the best
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Then check if it is null before attempting to populate the text box. A null from the database will be a System.DBNull.Value
"On two occasions, I have been asked [by members of Parliament], 'Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?' I am not able to rightly apprehend the kind of confusion of ideas that could provoke such a question."
--Charles Babbage (1791-1871)
My: Website | Blog
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with the try catch isn't it man ??
thank you thank you very much
try to be good if you can't be the best
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Hi ,
please i wanna ask something abt access i wanna call a procedure or a request of access from vb.net using the objcmd & adatpter & ...
please if you know how tell me
thnx
try to be good if you can't be the best
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hello,every one
i want ask about how i can convert the pixels of any image into 3RD pixel
thank alot;)
noor al-huda
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I think that you have to explain what you mean. What is a "3RD pixel"?
I tried searching the web for "3RD pixel", but obviously all I found was a lot of "3rd pixel", e.g. in the meaning of "third pixel".
---
b { font-weight: normal; }
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 Dear Friends,
I have a problem updating the record in sql database table because of relationship, i mean i want to update the data as per the relationship can i know the relation between two table at the run time by which i update the data in sequential manner.
for eg.
i have two table 1)Employees and 2)EmployeeTerritories in NorthWind Database
in which Employees is Primary key table and EmployeeTerritories is foreign key table both are related to each other by EmployeeID
if i want to update the data i have to update first in Primary key table (Employees)after that it update to foreign key table (EmployeeTerritories) but i want it at run time can any one know how can i do this....
Thanks in advanced
Sasmi
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Hello There
My application contains a toolbar and it was working fine until I added 4 more buttons and 4 more images in imagelist. then I assigned them to new buttons. this work fines in the application. but when I deploy the application the icons for newly added button does not appear. can any one help me what is going on ?
Best Regards
Rizwan Bashir
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Got my self a stupid solution. may be this will help others
I changed the Form color and compiled it on release and then changed the color back and compiled it. and it started working. How ??? I dont know !!!!
if any one knows the theory behind this .. would be lot help ful for me
Regards
Rizwan Bashir
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how to to set a Map Property with GOOGLE Map.
Plz guide me.
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Sir,
In the label control , i want make the text moving in upward direction like scrolling at run time and the text lines are continuously moving upward.The process should continue until the application is exited.
Thanks and Regards
Amaneet Brar
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 hello friends,
plz guide me so that i am able to find a file in a directory.
Is there any ready made API or dll?
Currently i search file as follows--
first of al i get a number of files in a directory .
then using a for loop, i check every file .
plz reply
Rahul here
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The following will give you all files with the extension 'dll':
Dim di as System.IO.DirectoryInfo = new System.IO.DirectoryInfo(myPath)
Dim fi as FileInfo() = di.GetFiles("*.dll")
You can search by any pattern you like.
You can also use File.Exists to check whether a specific file exists.
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Thank You!!!
Rahul here
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I have make a form (bollon) just have the same function and appearence of new email arrive in Outlook 2003.
It shows very nice, but it take the focus when I show the ballon.
How can I show it but without take the focus?
Thank you!
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Are you using VB.Net?
If so, you can use Form.SendToBack() Method Just after
Form.Show()
Make sure TopMost property of the form is set to false and you dont use Form.ShowDialog()
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Sorry, My situation is,
Show the box topmost, but doesn't take the focus from main form.
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Good then, what you can do is
Dim frmChild As New ChildForm
fr.Show()
Me.Activate()
PS: You can't use ShowDialog
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please how can read data in lines from textpad and view them in the listview
start the code from browsing until fill the listview
nice day
amarni
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you can read the text file like this
Dim fl As IO.StreamReader
Dim txt As IO.File
fl = txt.OpenText("C:\abc.txt")
while fl.read or fl.readline ( writing over here so done remember)
lstview.items.add(fl.readline)
end while
if you are talking about textpad software then you might need to explore the API for that.
Rizwan Bashir
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Hi Friends,
I need some clarification regarding TELNET with .NET.
In the remote system (SOLARIS) root folder i have some scripts like perl,shell. I want to execute the script.
I executed through the command prompt, but i want to execute from VB.NET.
First of all , i want to know we have option in .NET2.0 or not.
Please Clarify me.
Thanks,
Tharma
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rexec, you'll need to implement Rexec protocol see RFC, quite simple - really.
Never send a human to do a machine's job Agent Smith
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Thanks for your reply.
I think, .NET does not provide rexec component. Only some third party DLL
is available, that provides only trial version. We don't have free version
of that components. Please clarify me.
Give some overall ideas of rexec, How to use and implement it?
This will be very helpful for me.
Thanks,
Tharma
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The rexec protocol works as following :
Client makes TCP connection to REXEC port (512).
Client sends TCP port number (decimal ascii, null-terminated) of port. If the first byte is a NULL, then server won't make any stderr connection
Server makes TCP connection to client's port
Client sends target username (null-terminated).
Client sends target password, NULL, remote command, NULL, and then command's stdin, followed by a FIN.
Server sends one null byte (=no error), or a non-null byte, followed by error message(s).
Server sends output of command.
Server sends FINs on stdout, stderr connections.
Never send a human to do a machine's job Agent Smith
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Thanks my friend.
Really I understand how rexec works, but i don't know how to implement these
method in VB.NET.Please guide me.
Thanks,
Tharma
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