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Hello,
I want to hide a column in a datagrid.
This is my code below that works, but isn't there a better way to do this.
<br />
ds = objComponents.RefComponentsTypes_selAll()<br />
Me.dgvComponents.DataSource = ds.Tables(0)<br />
Me.dgvComponents.Columns("AssemblyID").Width = 0<br />
Thanks in advance,
Steve
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You can set the width to zero.
Or you can just delete the column all-together.
Or you can get a new view of the DataSet and not include that column in the view, then bind the DataGridView to the new DataView.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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hi
i m using datagirdview in my vb.net(winforms)-2005 application.
i m validating each cell in "datagridview_CellValidated" procedure. and after validating each cell i wnt to set focus on that cell so i wrote following code in above procedure but it doesnt set focus on that cell to which im validating.
code----->
DGCustDept.CurrentCell.DataGridView.Focus()
or
Me.DGCustDept.CurrentCell = New DataGridCell(e.rowindex, e.columnindex)
Please tell me wht shuld i do?
priya
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control.column(0).visible=true/false
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Please don't tell me that this should be sending off red lights, but I need to know how to declare "global" variables (where, and how). I am using Visual Basic.net Express Edition... If this has any effect on it. Anyways, I have two forms, and I need to have the variables from one accessible to the other. Any help you can give me would be appreciated.
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jacob.vankley wrote: Please don't tell me that this should be sending off red lights
OK. It should, tho
jacob.vankley wrote: but I need to know how to declare "global" variables
You can't. You can create a class with public, static properties, tho.
jacob.vankley wrote: Anyways, I have two forms, and I need to have the variables from one accessible to the other.
Then globals are the wrong approach (as is often true ). You should define delegates that pass the info between forms as it changes. Or, if you're only passing from parent to child, add properties on the child that the parent can set.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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Alright, i think i understand, i will try that.
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It's a common question, I keep meaning to write an article on it. If you get stuck, just ask again.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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I thought I'd do one that goes over all the things I see people trying to do in the forums, and why they are all bad.
Christian Graus - C++ MVP
'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert
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Christian Graus wrote: I thought I'd do one that goes over all the things I see people trying to do in the forums, and why they are all bad.
Ah... It reminds me of a session I attended at the DDD4 conference last month. "How to write crap C# code" - It was surprisingly well attended.
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jacob.vankley wrote: I need to know how to declare "global" variables
jacob.vankley wrote: I have two forms, and I need to have the variables from one accessible to the other.
That is no reason to use global variables.
jacob.vankley wrote: Please don't tell me that this should be sending off red lights
Well... It seems you already know it is a bad idea.
Perhaps your question should have been: I need to share information between two forms. Is there any way to do this without using global variables? If so, how?
To which my answer would have been: Read this article[^] about passing variables between forms. It was written for VB.NET 1.1 but it should still be valid for 2.0
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Thanks so much! I will try that, and it should work.
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I've been trying to figure out how to connect to the DHCP database on a 2003 DHCP server. It's a jet database, but I can't find a way to access it.
What I want to do is pull scope range and options from my 2 DHCP servers and then compare them to make sure everything is redudant. I also want to set up email alerts for any scope that's >90% utilization.
But first I have to connect to the database. I've been playing with the netsh command which gets me some information, but it's not very legible. I'd rather pull just what I need and leave everything else out.
Any help would be greatly appreciated.
Thanks.
JnyBot
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I don't have a 2003, or any other version, DHCP server running anywhere, but I would imagine that that database is locked exclusive while the DHCP server is running. It's entirely possible that just getting a connection to it would be impossible without stopping the DHCP server.
You can find out just by trying a connection to the database file which, I THINK, is in C:\Windows\System32\dhcp\dhcp.mdb, or somewhere south of there. If the OleDbConnection fails to open, try stopping the DHCP service and try it again. If it works, you have your answer.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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I am writing a front-end for a car PC project. I have managed to code an FM Tuner and an MP3 player by using windows messages and Winamp. My next part of the project is a DVD player. At first I thought that this would be quite easy, use WMP. So I tried and got a few of the functions working, but it keeps crashing and rebooting the computer at random times. I have read a lot about using it and everyone says that DirectX is the way to go, (well DirectShow anyway). Please could someone give me a sample piece of code for VB.net as I have searched for hours and can't find anything.
Thanks in advance for any replys
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If you have the DVD codec installed on your PC, then WMP will do this for you just fine. If you don't, then nothing will work.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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That's the strange thing. If I use WMP from the Windows Start menu it plays DVD's fine. But when I put WMP into a form in visual basic, it starts to play it, but then pauses, jumps about and crashes!
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That's odd. It's not how your code is calling WMP ?
Christian Graus - C++ MVP
'Why don't we jump on a fad that hasn't already been widely discredited ?' - Dilbert
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Dear Listers,
My involvement in programming only xtends to TSQL. I'm looking to take-on VB.Net. What would you recommend are suitable texts for entry-level into this code?
TIA
John
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Using the code below, I can only do an EXACT seearch for an item in a listview control; however, I'd also like to do a PARTIAL search as well but can't get that working from what I can find. I know there is a FindNearestItems method, but no luck in getting that to work.
Any suggestions on how to code the partial search?
Here is my code that works well in a doing an EXACT search:
Private Sub txtSearch_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles txtSearch.TextChanged
Dim Itm As ListViewItem = lstItems.FindItemWithText(txtSearch.Text, True, 0, False)
If Not (Itm Is Nothing) Then
lstItems.Items(Itm.Index).Selected = True
lstItems.EnsureVisible(Itm.Index)
lstItems.Focus()
End If
End Sub
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I didn't know this was on offer at all. I reckon you'll need to iterate over the items yourself.
Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog
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I am trying to move a label from form1 to form2 and I don't want to have to create another label on form2 and transfer all the information it carries to the other form and then back again. So what I want to do is just move the label from form1 to form2 and then later back again. If anyone can help it would be greatly appreciated. Thank You!
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That's not a real good idea. You'd be much better off and have far more maintainable code if you just created the label on the second form and changed the text property when you needed to. What you're proposing is overly complex for little benefit.
Dave Kreskowiak
Microsoft MVP - Visual Basic
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