Re: How to check array contents - Visual Basic Discussion Boards

Re: Moves data From Program Files in VISTA

Dave Kreskowiak10-Jul-09 3:11

10-Jul-09 3:11

Rewrite your code so you don't write data to anywhere in the Program Files folder. Since the users don't have write access to that folder, the files are automatically getting redirected to a "safe" location that the users do have Write permissions to.

You might want to do some research on the user data storage locations to pick an appropriate place to put your apps data. There are multiple locations you can use, depending on your apps requirements. You'll probably want to start with Googling for "Windows Vista Development Guide".

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Visual Developer - Visual Basic
2006, 2007, 2008

Re: Moves data From Program Files in VISTA

Anubhava Dimri10-Jul-09 18:16

Anubhava Dimri

10-Jul-09 18:16

I already try for it. I moves data from Program Files to Program Data(All Users Application Data).
But it also moves sometime in Virtual Store.

My data is sharable for all accounts of users.

If you can think then I Can.

Re: Moves data From Program Files in VISTA

Dave Kreskowiak11-Jul-09 18:29

Dave Kreskowiak

11-Jul-09 18:29

That's because most companies make All Users ReadOnly to the workstation users.

eg_Anubhava wrote:
My data is sharable for all accounts of users.

Than you're going to have to describe this requirement in your applications documentation. Vista has a \Users\Public\Public Documents folder you can put data into. Or, get with your Admins and find out what an appropriate folder would be in your environment.

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Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: Moves data From Program Files in VISTA

Anubhava Dimri12-Jul-09 18:07

Anubhava Dimri

12-Jul-09 18:07

Thanks for reply.

Is its data not moves into virtual Folder?

If you can think then I Can.

Re: Moves data From Program Files in VISTA

Dave Kreskowiak13-Jul-09 1:48

Dave Kreskowiak

13-Jul-09 1:48

Yes and no, that dpeneds on the network policies and whether people has write permissions to that folder.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: Moves data From Program Files in VISTA

Anubhava Dimri14-Jul-09 22:26

Anubhava Dimri

14-Jul-09 22:26

I am trying to write data in ProgramFiles it works successfully. but after some time or accidently it's data moves in Virtual store.

whether I have fully permission fo program files.

If you can think then I Can.

How to check array contents

KIDYA9-Jul-09 20:34

KIDYA

9-Jul-09 20:34

Hello Experts!!!

I am declaring array arr() as string

assign values to array...now i want to search specific content in that array.Can anybody tell me how will i do this?

Re: How to check array contents

Denis J. González9-Jul-09 20:55

Denis J. González

9-Jul-09 20:55

If you want to search for a String within an array of Strings you can use this function.

Private Function indexInArray(ByVal theArray As String(), ByVal value As String) As Integer
    For i As Integer = 0 To theArray.Length - 1
        If theArray(i) = value Then Return i
    Next
    Return -1
End Function

To use this function you have to pass the array you want the string to be searched in and the string you want to search (value).
This function will return -1 if it doesn't find the string you want to search within the array. If it does find it it returns the index. NOTE: This only works for one-dimensional arrays.

You can use this sub to test it.

Private Sub testIt()
    Dim myStrings(1) As String
    myStrings(0) = "hello"
    myStrings(1) = "world"
    If indexInArray(myStrings, "hello") <> -1 Then
        MessageBox.Show("The string in contained within the array")
    End If
End Sub

Re: How to check array contents

KIDYA9-Jul-09 21:20

KIDYA

9-Jul-09 21:20

Thanx for reply but in function

If theArray(i) = value Then Return i //doesn't return i after finding index value same with value,it return -1 for all values

Re: How to check array contents

Denis J. González9-Jul-09 21:28

Denis J. González

9-Jul-09 21:28

How exactly are you using the function?
It should be :

indexInArray(the array you are working with, "value to search")

Re: How to check array contents

Luc Pattyn9-Jul-09 22:35

Luc Pattyn

9-Jul-09 22:35

Hi,

there is an Array.Find(Of T) method in recent .NET versions. You can give it a predicate that explains what exactly is a find. I haven't used it yet.

Smile | :)

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Re: How to check array contents

dan!sh 9-Jul-09 23:52

dan!sh

9-Jul-09 23:52

Array.Contains method.

Muliple windows

chrispowell123459-Jul-09 5:59

chrispowell12345

9-Jul-09 5:59

Hi there,

I'm creating a menu system (using visual basic 2008 express) used to fire off other applications (not .net) in the same window. I've found source code relating to the issue so that the fired off application opens up, then it finds the window by the process name ("process" here) and changes it so it is a child of the vb form window. This works a treat, however when it is minimized in the vb (parent) window It cannot be restored:

Private hchild As IntPtr
Private hParent As IntPtr
Private Declare Function FindWindow Lib "user32.dll" Alias "FindWindowA" (ByVal lpClassName As String, _
ByVal lpWindowName As String) As IntPtr
Private Declare Function SetParent Lib "user32.dll" (ByVal hWndChild As IntPtr, _
ByVal hWndNewParent As IntPtr) As IntPtr
..................................................................
process.Start()
Threading.Thread.Sleep(1000)
hchild = FindWindow(vbNullString, "process")

If hchild.ToInt32 <> 0 Then
hParent = SetParent(hchild, Me.Handle)
End If

I can still see the minimised application but cannot select it. Any help or a point in the right direction to a general overview on the subject (I did look but couldn't find anything, well much that made much sense to me) would be greatly appreciated!

Re: Muliple windows

0x3c09-Jul-09 6:44

0x3c0

9-Jul-09 6:44

First of all, you don't need the Thread.Sleep, or the FindWindow. Use process.WaitForInputIdle(1000) instead of Thread.Sleep for a more intelligent waiting algorithm

Next, you can replace the result of FindWindow with process.MainWindowHandle. This mains you don't have to call FindWindow at all. You may, however want to consider what happens if a process has more than one window open (hint: try EnumChildWindows)

Lastly, which application are you talking about? If it's the minimised application, then you can use ShowWindow for that

Between the idea
And the reality
Between the motion
And the act
Falls the Shadow

Re: Muliple windows

Dave Kreskowiak9-Jul-09 7:43

Dave Kreskowiak

9-Jul-09 7:43

On top of what Computafreak said, you'll have to supply a either a button in your host app or a menu option to restore the window. Since you already have the window handle (MainWindowHandle property of the Process object), all you need to do is call ShowWindow[^] and give it the appropriate window handle and window state values.

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Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

.Net 1.1 System.Configuration.ConfigurationSettings.AppSettings returning "nothing"

JJDoherty9-Jul-09 4:24

JJDoherty

9-Jul-09 4:24

Hi all,

Hope someone can help. I am maintaining a web service and having downloaded from VSS and compiled the service when I run it it fails. I have located the problem but cannot explain it or resolve it.

The code is attempting to read database connection information from the web.config file but what is being returned from the code

System.Configuration.ConfigurationSettings.AppSettings("server")
System.Configuration.ConfigurationSettings.AppSettings("catalog") etc.

is "nothing", literally! Does anyone have any idea why this might be happening? Any help would be greatly appreciated.

Thanks in advance, J

Re: .Net 1.1 System.Configuration.ConfigurationSettings.AppSettings returning "nothing"

Dave Kreskowiak9-Jul-09 7:39

Dave Kreskowiak

9-Jul-09 7:39

Is the config file in the same folder as the page that is trying to read it?? Are you sure you don't have more than one copy of the web.config file in the app? If you get "nothing" from these statements, it's because there either is no web.config file where it is supposed to be, is named improperly, or the XML document in the file is not written correctly.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: .Net 1.1 System.Configuration.ConfigurationSettings.AppSettings returning "nothing" [modified]

JJDoherty9-Jul-09 8:03

JJDoherty

9-Jul-09 8:03

Hi Dave,

Thanks for the reply. All yours points makes sense but none of them seem to be the reason behind my particular problem. This is a web service as well so it's not a page accessing the web.config file. The config file itself is in the correct folder and having reviewed the XML in the config file it appears to be correct.

Any other suggestions, at this stage, would be very welcome.

Thanks again, J

modified on Friday, July 10, 2009 5:15 AM

Insert file into Oracle blob filed with VB 2008 and Ado

Filippo19749-Jul-09 3:23

Filippo1974

9-Jul-09 3:23

Hi all,
anyone knows how can I store a file into a blob field in Oracle? I'm using VB 2008 and adodb (v. 2.8) and oracle ver.9.2.0.1.0 I tried with some example downloaded from internet, but no one works fine. Any suggestion will be really appreciate.
Below you can see an example found in internet:

Public sub ImportFile(ByVal sFile as string)

Dim rs = New ADODB.Recordset
Dim st = New ADODB.Stream
rs.Open("Select * from doc_allegati where matricola = " & gMatricola, oConn, ADODB.CursorTypeEnum.adOpenKeyset, ADODB.LockTypeEnum.adLockOptimistic)
st.Type = ADODB.StreamTypeEnum.adTypeBinary
st.Open()
st.LoadFromFile(sFile)

With rs
.AddNew()
.Fields("ID").Value = 1
.Fields("Documento").Value = st.Read
.Update()
End With
rs.close
st.close

end sub

This not work; when I try to open the recordset vb give me back an error message such as: 'data type not supported'

Thaks in advance for your help,
Filippo

Re: Insert file into Oracle blob filed with VB 2008 and Ado

Dave Kreskowiak9-Jul-09 4:25

Dave Kreskowiak

9-Jul-09 4:25

Lucky me - I don't use Oracle at all.

But, a quick Google reveals a bunch of possiblities. Results...[^]

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Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

Re: Insert file into Oracle blob filed with VB 2008 and Ado

Filippo19749-Jul-09 22:29

Filippo1974

9-Jul-09 22:29

Hi Dave,
you are right, but into the example I need to use ODP.NET. Is it possible to manage this kind of field without install this?

Thanks,
Filippo

Re: Insert file into Oracle blob filed with VB 2008 and Ado

Dave Kreskowiak10-Jul-09 3:14

Dave Kreskowiak

10-Jul-09 3:14

So, you looked at one example that used ODP.NET. There are others in that list that use other database providers that work with Oracle.

Filippo1974 wrote:
Is it possible to manage this kind of field without install this?

Keep reading through the results list and find out. This is what is called "research", and it's an integral part of any programming job.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

How can we get Primary Interop Assemblies installed?

Raheem MA9-Jul-09 1:45

Raheem MA

9-Jul-09 1:45

Hi,

We have 'Primary Interop Assemblies' folder at the following path:

"C:\Program Files\Microsoft.NET\Primary Interop Assemblies"

How can we install them? or with which product we get these assemblies installed? any help would be greatly appreciated

Thank you,
Raheem MA

Re: How can we get Primary Interop Assemblies installed?

Dave Kreskowiak9-Jul-09 4:23

Dave Kreskowiak

9-Jul-09 4:23

Primary Interop Assemblies would be supplied by the application that you want to interact with, such as Office 2003 or 2007. You can also download the PIA's seperately from Microsoft and run their installer.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

QuerInterface fails for an Interface of type IUnknown in VB .NET windows service but the same works in VB .NET forms application

VM JOE9-Jul-09 1:22

VM JOE

9-Jul-09 1:22

Here is the IDL definition
[
          object,
          uuid(DAFB7D76-0158-452F-8FD0-FF97A683DEA3),

          helpstring("ITest Interface"),
          pointer_default(unique)
     ]
     interface ITest : IUnknown
     {
          [helpstring("method GetString")] HRESULT GetString([out,retval]   BSTR* pVal);
     };

[
     uuid(E768DC15-A19B-407C-ACF9-C420D6FDB1BE),
     version(1.0),
     helpstring("TestServer 1.0 Type Library")
]
library TESTSERVERLib
{
     importlib("stdole32.tlb");
     importlib("stdole2.tlb");

     [
          uuid(788571BD-030B-49CC-8C0A-2DF74E58331A),
          helpstring("Test Class")
     ]
     coclass Test
     {
          [default] interface ITest;
     };
};

The ATL COM Library uses APARTMENT threading model.

And the VB.NET windows service code fragment

            try
                  Dim obj As New TESTSERVERLib.Test
                  Dim s As String
                  s = obj.GetString()
            Catch ex As Exception
                  WriteToLog(ex.Message)
                  WriteToLog(ex.InnerException.ToString)
            End Try

When the code executes the following error occurs:

Unable to cast COM object of type 'TESTSERVERLib.TestClass' to interface type 'TESTSERVERLib.ITest'. This operation failed because the QueryInterface call on the COM component for the interface with IID '{DAFB7D76-0158-452F-8FD0-FF97A683DEA3}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE)).
Object reference not set to an instance of an object.

But the same code works in VB.NET forms application.

Can anyone please explain the reason.

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