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It is actually quicker and easier to try a search[^] before posting a question. This probably ranks as one of the most asked questions in the forums.
Never underestimate the power of human stupidity
RAH
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would help me with it plz, my code under save button is this?
thank u in adnvance
For i As Integer = 0 To DataGridView1.Rows.Count - 1
'DataGridView1(3, i)
Try
c.cmd = New SqlCommand("update courseregistered set lettergrade='" & DataGridView1(3, i).Value.ToString & "' where courseno='" & (ComboBox1.SelectedItem.ToString).Substring(0, 7) & "' and studid='" & DataGridView1.SelectedCells(i).Value.ToString & "'", c.cn)
c.cmd.CommandType = CommandType.Text
c.cmd.ExecuteNonQuery()
Catch ex As NullReferenceException
MsgBox(ex.Message)
End Try
Next
c.da.Update(c.ds, "courseregistered")
MsgBox("update has been succesful")
it will save the last row under the column and display "update successful" message but ignores other rows in the column
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 What error message are you getting?
What is c as in c.cmd = new etc
Dambod wrote: c.da.Update(c.ds, "courseregistered")
What do you expect this to do, dammed stoopid MS wizarded crap, why people can't use a proper DAL I don't know.
Never underestimate the power of human stupidity
RAH
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c is the class where the dataAdpater and dataset are declared and set.
it says "Obect reference not set to an instance of an object
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try adding this to the start of the method
c = new classname()
Never underestimate the power of human stupidity
RAH
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i have set that line already while declaration
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i have got the solutions to my problems, thanks the support i received from u
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I have connected Barcode Scanner through USB and i want to read data in VB 6. Prior to this project i have worked on magnetic card reader which i connected through Serial Port and i used MSComm component for that.
Help required please.
Best regards,
Tufail
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It depends on the device driver you are using for the USB scanner. In most cases it will either set up an USB-to-serial COM port or a direct keyboard emulation. Try to check that on the scanner's documentation.
2+2=5 for very large amounts of 2
(always loved that one hehe!)
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But i dont have manual. i want to know that if MSComm is for serial port then what is the control which can be use with USB port
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Without the manual, you're pretty much screwed. Yes, MSComm can be used for serial communication. But, does the scanner expose itself as a virtaul COM port?? Probably not. It's probably going to be a keyboard "wedge". In which case, MSComm won't do you any good. You absolutely NEED the manual. Contact the manufacturer or go to their website and see if you can download a copy.
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Will i need a USB to Serial Port converter or there is some thing which can be converted to scanner configuration.
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Probably not, and this is precisely why you need the manual.
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See what Dave told you.
2+2=5 for very large amounts of 2
(always loved that one hehe!)
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Will i need a USB to Serial Port converter cable or there is some thing which can be converted to scanner configuration.
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When i try to create a Setup file I'll get this error
The following files may have dependencies that cannot be determined automatically.
Please confirm that all dependencies have been added to the project.
c:\program files\common files\system\Mschart.OCX
c:\program files\common files\system\ado\Mschrt20.OCX
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is this vb6?
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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No this is VB.NET 2005 I m using VB6 component.
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Go to your setup project and Right click -->View--> FileSystem-->And in your application Directory right click and -->Add-->File and go and locate MSChrt20.OCX and after that you can compile.
Hope this Helps
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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Ya I added. Now few systems are execute my package properly but some of systems it is not working. Previous error coming.
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Make sure that in the Systems that are not working , go to Solution explorer and make sure that the problem project have reference of that ocx file.
Vuyiswa Maseko,
Few companies that installed computers to reduce the employment of clerks have realized their expectations.... They now need more and more expensive clerks even though they call them "Developers" or "Programmers."
C#/VB.NET/ASP.NET/SQL7/2000/2005/2008
http://www.vuyiswamaseko.somee.com
vuyiswa@its.co.za
http://www.itsabacus.co.za/itsabacus/
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This means that the OCX requires other file(s) to operate that are not included in your deployment. Some of the old MS OCX file assume you have the entire office suit installed on every client and therefore do not encapsulate all their functionality inside themselves.
There used to be a tool called dependency walker[^] that was useful in identifying additional resources for deployment. I have not needed this in years so I have no opinion on its relevance.
Never underestimate the power of human stupidity
RAH
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Your project requires the MSCHART.ocx and MSCHRT20.ocx because you uses these conponent in your project.
And at the time of setup building these files are not found.
If you can think then I Can.
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I was added Mschart.ocx and MSchrt20.ocx.
and I tried Mschart.dll and MSchrt20.dll (using converter).
But still error is coming.
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You should register those assembly or dll.
If you can think then I Can.
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