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I am using .NET Remoting to access a Class Library that I created in VB.NET. This class library contains a reference to a COM + component that is used by several functions. I am able to get the Remoting to work for most functions but as soon as I try and call a function that is using the COM + component the app freezes. I don't get any error messages, it just seems to hang. Is there something I need to do in order to use a COM + component when Remoting?
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Can anyone tell me if it is possible to programatically change folder permission settings in the Registry. If so how?
Andy
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Nope. It's handled by the file system.
"The greatest danger to humanity is humanity without an open mind."
- Ian Mariano
http://www.ian-space.com/
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Does anyone know how to make an application viewable for all resolution?
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If you mean a "springy" form resizing tool, there is much code out there, and several tools as well ...
Here is a google search[^] for you. And in VB.NET, the forms can be layed out to do just that.
"The greatest danger to humanity is humanity without an open mind."
- Ian Mariano
http://www.ian-space.com/
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windows 9x/NT does not support netapi32.dll.
can anyone let me know on how to use netserverenum on these OSs or should i use any other api.
Kindly help.
Thanks in advance.
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well that's absolutely right.
So is there anything that i can do to find the list of SQl servers in the network on these OSs.
Thanks.
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You could try opening up a TCP/IP Socket on the standard SQL Server port (1433) on each machine you find to see if you can connect...or try to open a named pipe to the machine ("\\.\pipe\sql\query" or "\\.\pipe\MSSQL$instancename\sql\query")...if they succeed, it's probably an SQL server ;o)
"The greatest danger to humanity is humanity without an open mind."
- Ian Mariano
http://www.ian-space.com/
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Yes, there is a way to Enumerate Servers on Win9x. However, I can't get the Code I have to work just right in VB.NET. If someone out there can help on this it would be great!!! The only thing it does is it keeps recusing the Top-Level Network Node (i.e. "Microsoft Windows Network" for me).
Here's what I have so far: 
<Code>
'Declarations
'API Declarations
Private Declare Auto Function GlobalAlloc Lib "kernel32" (ByVal wFlags As Integer, ByVal dwBytes As Integer) As Integer
Private Declare Auto Function GlobalFree Lib "kernel32" (ByVal hMem As Integer) As Integer
'API Declarations for Win9x
Private Declare Ansi Function WNetOpenEnum Lib "mpr.dll" Alias "WNetOpenEnumA" (ByVal dwScope As Integer, ByVal dwType As Integer, ByVal dwUsage As Integer, ByRef lpNetResource As IntPtr, ByRef lphEnum As Integer) As Integer
Private Declare Ansi Function WNetEnumResource Lib "mpr.dll" Alias "WNetEnumResourceA" (ByVal hEnum As Integer, ByRef lpcCount As Integer, ByVal lpBuffer As Integer, ByRef lpBufferSize As Integer) As Integer
Private Declare Ansi Function WNetCloseEnum Lib "mpr.dll" (ByVal hEnum As Integer) As Integer
'Structures
<Runtime.InteropServices.StructLayout(LayoutKind.Sequential, CharSet:=CharSet.Auto)> _
Private Structure NETRESOURCE
Dim Scope As Integer
Dim Type As Integer
Dim DisplayType As Integer
Dim Usage As Integer
Dim LocalName As IntPtr
Dim RemoteName As IntPtr
Dim Comment As IntPtr
Dim Provider As IntPtr
End Structure
'Constants for WNetEnum
Private Enum ResourceScopes
resConnected = &H1 'All currently connected resources (the dwUsage parameter is ignored)
resGlobalNet = &H2 'All resources on the network.
resRemembered = &H3 'All remembered (persistent) connections (dwUsage is ignored)
resRecent = &H4
resContext = &H5
End Enum
Private Enum ResourceTypes
resAny = &H0 'All resources (this value cannot be combined with RESOURCETYPE_DISK or RESOURCETYPE_PRINT).
resDisk = &H1 'All disk resources.
resPrinter = &H2 'All print resources.
resReserved = &H8
resUnknown = &HFFFF
End Enum
Private Enum ResourceUseages 'Ignored if the ResourceScope is not 'resGlobalNet'
resAll = ((&H1) Or (&H2))
resConnectable = &H1
resContainer = &H2
resNoLocalDevice = &H4
resSibling = &H8
resReserved = &H80000000
End Enum
Private Enum ResourceDisplayTypes 'Used to Determine the Resource Type of the NETRESOURCE Struct
resGeneric = &H0
resDomain = &H1
resServer = &H2
resShare = &H3
resFile = &H4
resGroup = &H5
resNetwork = &H6
resRoot = &H7
resShareAdmin = &H8
resDirectory = &H9
resTree = &HA
End Enum
'Enumerations
Public Enum ServerTypes
All = &HFFFFFFFF '/* handy for NetServerEnum2 */
Browsers = &H10000
Browser_Backup = &H20000
Browser_Master = &H40000
Domains = &H80000000
DomainController = &H8
DomainBackController = &H10
DomainMaster = &H80000
DomainMember = &H100
Novell = &H80
NTClusters = &H1000000 '/* NT Cluster */
Servers = &H2 ' All Servers
ServersDialIn = &H400
ServersLocal = &H40000000
ServersPrintQ = &H200
ServersNT = &H8000
ServersSQL = &H4 ' SQL Server
ServersXenix = &H800
ServersUnix = &H800
TimeServers = &H20
Workstations = &H1
WorkstationsNT = &H1000
WorkstationsWin9x = &H400000 '/* Windows95 and above */
End Enum
'Routine to Refresh Servers on a Win9x Machine (uses Recursion)
Private Sub RefreshServersWin9x(Optional ByVal Domain As String = Nothing)
Dim vResource As NETRESOURCE
Dim hResult, hEnum, hBuffer, hPointer, i As Integer
Dim nBufferSize As Integer = 16384, nCount As Integer = &HFFFFFFFF
Const GMEM_FIXED As Integer = &H0
Const GMEM_ZEROINIT As Integer = &H40
Const GPTR As Integer = (GMEM_FIXED Or GMEM_ZEROINIT)
'Initialize the Buffer Pointer
Dim ptrBuffer As IntPtr = IntPtr.Zero, ptrDomain As IntPtr = IntPtr.Zero
If (Not IsNothing(Domain)) AndAlso (Domain.Length > 0) Then
ptrDomain = Marshal.StringToBSTR(Domain)
ptrBuffer = Marshal.AllocCoTaskMem(Marshal.SizeOf(vResource))
vResource.RemoteName = ptrDomain
Call Marshal.StructureToPtr(vResource, ptrBuffer, True)
End If
Try
hResult = WNetOpenEnum(ResourceScopes.resGlobalNet, ResourceTypes.resAny, ResourceUseages.resContainer, ptrBuffer, hEnum)
If (hResult = 0) And (hEnum <> 0) Then 'Successful
'Enumerate the Resource
hBuffer = GlobalAlloc(GPTR, nBufferSize)
hResult = WNetEnumResource(hEnum, nCount, hBuffer, nBufferSize)
If (hResult = 0) Then 'Successful
hPointer = hBuffer
For i = 0 To nCount - 1
'Retrieve the Information for the Resource
vResource = CType(Marshal.PtrToStructure(New IntPtr(hPointer), GetType(NETRESOURCE)), NETRESOURCE)
'Recurse to Find the Servers if this is a Root or Domain Node
Select Case vResource.DisplayType
Case ResourceDisplayTypes.resDomain, ResourceDisplayTypes.resGroup, ResourceDisplayTypes.resNetwork, ResourceDisplayTypes.resRoot
Call Me.RefreshServersWin9x(Marshal.PtrToStringAnsi(vResource.RemoteName))
End Select
'Determine the Next Pointer
hPointer += Marshal.SizeOf(vResource)
Next i
End If
End If
bInitialized = True
Catch
'Call Globals.ErrorMessage("Refresh")
Finally
'Free Up Memory
Call Marshal.FreeCoTaskMem(ptrBuffer)
Call Marshal.FreeCoTaskMem(ptrDomain)
If (hEnum > 0) Then hResult = WNetCloseEnum(hEnum)
If (hBuffer > 0) Then hResult = GlobalFree(hBuffer)
End Try
End Sub
</Code>
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there is a Microsoft Spreadsheet 10.0 component in VB.NEt.
I dont know how to do data binding with it at run time (by code). plz help me to do that?
--thnx
waiting for a quick reply
Aakash
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If in VB6, right click on the Forms folder, select Add, then choose MDI Form. 
Nick Parker
May your glass be ever full.
May the roof over your head be always strong.
And may you be in heaven half an hour before the devil knows you’re dead. - Irish Blessing
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Wow, the Zen of MDI...
Pete
Insert Sig. Here!
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I heard that resource(memory) is freed automatically for you in vb.net but not vb6, so i was wondering how do you do it manually in vb6 ?
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Set MyObject = Nothing
Paul
I think there're pieces of me you've never seen - Tori Amos, Tear in Your Hand
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Setting an Object = Nothing does not ALWAYS free the memory in VB6 (this goes for .NET as well). Get familiar with the Objects you are using, if they implement a "Close" or "Dispose" method, ALWAYS use it before Setting your Object = Nothing.
For example, watch ADO eat up memory in a VB6 app. However, when you use the Close method, the memory usage goes way down. It takes a little while for the VB6 runtime to clean up the memory references, but it happens.
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I am trying to add numbers from a listbox
Its working with vb6 but not with vb.net.
That's what I tried but it's not working
Dim sum As Integer
Dim i As Integer
sum = 0
i = 0
For i = 0 To ListBox2.Items.Count - 1
sum = sum + ListBox2.Items(ListBox2.SelectedIndex)
Next i
TextBox5.Text = sum
I would like the sum of what's inside the listbox to appear inside the textbox
Ex: 12 + 12 + 12 from the listbox and sum would be 36 in the textbox
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I'm thinking you might want to go for
sum = sum + CInt(ListBox2.Items(ListBox2.SelectedIndex).Value)
Paul
Why don't you take a good look at yourself and describe what you see - Led Zeppelin, Misty Mountain Hop
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Please respond to forum
Golfmaltais wrote:
it's still makes a error
sum = sum + CInt(ListBox2.Items(ListBox2.SelectedIndex).Value)
public 'Value' type of 'DataRowView' is no where to be found.
Ooops. My bad.
What happens when you use
For i = 0 To ListBox2.Items.Count - 1
sum = sum + ListBox2.Items(ListBox2.SelectedIndex)
Next i
?
Paul
Why don't you take a good look at yourself and describe what you see - Led Zeppelin, Misty Mountain Hop
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PLEASE respond to forum
Golfmaltais wrote:
not valid with type of 'Integer' and type of 'DataRowView'
Hold on! I've only just clicked on to this DataRowView thing.
How is ListBox2 defined? A ListBox item should be of type Object. A DataRowView is an item of a DataView.
[edit]I have this question wrong. I should be asking "How is ListBox2 populated?"[/edit]
Paul
Why don't you take a good look at yourself and describe what you see - Led Zeppelin, Misty Mountain Hop
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I am trying to add numbers from a listbox to to make a total in a texbox its working with vb6 but not with vb.net that what I did and it's not working
Dim sum As Integer
Dim i As Integer
sum = 0
i = 0
For i = 0 To ListBox2.Items.Count - 1
sum = sum + ListBox2.Items(ListBox2.SelectedIndex)
Next i
TextBox5.Text = sum
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Try specifying the property of the object you are referencing in:
sum = sum + ListBox2.Items(ListBox2.SelectedIndex).
In VB6 each data type had a default property, and I don't think VB.NET has this so you need to indicate which property you are reading from. Is it numeric?
HTH
Andy
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Hi,
I wrote a Collection Class(viz: MYCollection)
(Derived from Collection Base).
And have added methods for Add() and Remove().
I have used this Class in a Custom Control,
and exposed a Property of type MyCollection.
Now, the VS.Net IDE does show the Collection Editor
Dialog Box for the Property,but when I add items to the
collection using the Collection Editor, the changes
are not persisted. (ie: The IDE does not Generate code
for the Items added to the collection).
What is to be done to persist the Items Added using
the Collection Editor (ie: to make the VS.Net generate code for the Added Items, just like it does for ListView
Items Collection, for Example)
Someone please help me....
Thanks
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