.NET General Forum RSS Feed

ODBC Connection

Mon, 01 Dec 2008 12:59:49 -0700

I am using Visual Basic 2008 Express (can't buy full Visual Studio here at work). I have a Windows applications connecting to an Access database. I wrote code to update records in the database (different tables). With one table, when I include certain fields in the update command line, I get an error "field not updateable". The database resides on a mapped drive, so is it a permissions thing? But why on certain fields? They are all text/string fields.

[vs 2008] create an array from a column in a datagridview

Sun, 23 Nov 2008 04:09:47 -0700

hi there: im new to programming and i have the following code:

Dim dt As New DataTable
Dim da As New SqlClient.SqlDataAdapter("SELECT FEE_NAME, convert(varchar(50), convert(money, FEE_AMOUNT), 1) FROM FEE_TABLE ", m_Connection)
da.Fill(dt)

DataGridView1.DataSource = dt

now this will show in the datagridview as:

_______________________
FEE_NAME ...| FEE_AMOUNT
---------------------------
registration..| 8,000.00
---------------------------
books.........] 4,500.00
---------------------------
uniform.......| 7,300.00
---------------------------
library........| 3,000.00
________________________
(the dots are just so i could align them)

is it possible to put all the rows from FEE_NAME into an array when its already in the datagridview.

so the array will show
array1 = ["registration" , "uniform" , "books" , "library" ]

i have reAd that i needed to use a for each statement like:

For Each row As DataGridViewRow In DataGridView1.Rows

DONT KNOW WHAT TO PUT HERE. :D

Next

because i need to add the data from the array to a new table in the database or create a view. im using ms sql server 2005 as my db. a sample code will really really help me. thanks in advance.

[vs 2008] create an array from a column in a datagridview

Sun, 23 Nov 2008 04:09:27 -0700

VB.Net Windows Service Issue

Thu, 20 Nov 2008 08:00:38 -0700

Hello Everyone,

I am stuck with a minor issue related to a Windows Service made in VB.Net (framework 2.0). The service is working as expected for few printing documents and not for others.

The actual expectation for Windows Service is to periodically check for new Work Orders raised and print the respective Work Order (MS-Word) document (located on a network using UNC path) on a predefined network printer. This is done perfectly fine, barring few word documents and I am not sure for what reason. Let me know in case if you would like to have more information to help me.

Regards,
Saurabh

Html parsing with mshtml. offsets (offsetLeft etc.) always are zero

Mon, 17 Nov 2008 14:59:41 -0700

Hello. I want to learn positions of all elements on a page. I do so:

  public class MsHtmlSharpParser {

    IHTMLDocument2 htmlDocument;
    public HtmlTreeNode htmlTree;

    public MsHtmlSharpParser() {
      htmlDocument = new HTMLDocumentClass();
    }
    public void LoadContent(string content) {
      htmlDocument.write(new object[] { content });
      htmlDocument.close();
      ((HTMLDocumentClass)htmlDocument).recalc(true);
      htmlTree = new HtmlTreeNode((IHTMLDOMNode)htmlDocument.body);
    }
  }



  public class HtmlTreeNode {
    public IHTMLDOMNode htmlDomNode;
    public List<HtmlTreeNode> children;

    internal HtmlTreeNode(IHTMLDOMNode htmlElement) {
      this.htmlDomNode = htmlElement;
      children = new List<HtmlTreeNode>();
      IHTMLDOMChildrenCollection collection = (IHTMLDOMChildrenCollection)htmlElement.childNodes
;
      int i1, n1 = collection.length;
      for(i1=0;i1<n1;i1++)
        children.Add(new HtmlTreeNode((IHTMLDOMNode)collection.item(i1)));
    }

    public void GetAbsolutePosition(out int x, out int y, out int width, out int height) {
      if (htmlDomNode is IHTMLElement) {
        x = 0;
        y = 0;
        x = ((IHTMLElement)htmlDomNode).offsetLeft;
        y = ((IHTMLElement)htmlDomNode).offsetTop;

        IHTMLElement offsetParent = ((IHTMLElement)htmlDomNode).offsetParent;
        IHTMLDOMNode parentNode = htmlDomNode.parentNode;

        while (offsetParent != null) {
          x += offsetParent.offsetLeft;
          y += offsetParent.offsetTop;
          parentNode = ((IHTMLDOMNode)offsetParent).parentNode;
          offsetParent = offsetParent.offsetParent;
        }
        width = ((IHTMLElement)htmlDomNode).offsetWidth;
        height = ((IHTMLElement)htmlDomNode).offsetHeight;
      } else
        x = y = width = height = -1;
    }
  }

I call LoadContent to load html page and parse it. It works successifully, the object tree is built. But if I try to call GetAbsolutePosition, I will see that offsetHeight, offsetWidth, offsetLeft and offsetTop always return zero. Why is it so and how to solve this problem?

Thank you.

Vb.net 2005 help for tabcontrol.........

Mon, 10 Nov 2008 09:12:25 -0700

hi.
really i am new to the .net programing.
i am developing a application in that there is a tree view on left side
and i have done the coding for showing the 3 panels for 3 tree nodes...
i want to display a tabcontrol placed on a panel on the 4th node........
can some 1 help me to do that ...
can any one give me sample code with simplicity as i am new to .net programming.......

vb.net application inside a chrome-like frame

Mon, 10 Nov 2008 09:01:56 -0700

Hello world,

I have a vb.net application containing a ticker and 2 listviews.
I have also attached a picture with the way I would like to present the ticker and the listviews. As you can see I want to present them inside a silver/chrome-like frame, just like an old monitor.
What's the best way to do something like this? And is it possible to do it all in vbnet, or do I have to use asp.net for example??
Unfortunately I'm not a layout-man so I have no clue.
Any help is appreciated

Attachment: Kwazulu Natal.jpg (30422 bytes | downloaded 21 times)

DHTML or Silveright please help..

Mon, 10 Nov 2008 03:52:43 -0700

I am developing an enterprise application and I am still not sure if I should use DHTML or Silverlight.

I have some concerns regarding Silverlight's security because it is a
client-side applications.

Does anyone who have experienced with Silverlight applications can answer this?

How to Sort by 2 keys using VB.NET

Sat, 08 Nov 2008 09:33:48 -0700

Using - VS 2003
I would like to read the below XML and sort by (SORT_ID & SEQ_ID)? It is work to use XSLT. However, without XSLT what's the best way for me to do? Can i use the sortedlist with multiple key (SORT_ID & SEQ_ID)? Thanks for reading it and welcome if you have some sample code for me to do it. Thanks
************************************************** *********************
<group_1>
<first>Phil</first>
<salary>100000</salary>
<SORT_ID>2</SORT_ID>
<SEQ_ID>1</SEQ_ID>
</group_1>
<group_1>
<first>Graham</first>
<salary>89000</salary>
<SORT_ID>1</SORT_ID>
<SEQ_ID>2</SEQ_ID>
</group_1>

"Stealing" File Handles

Fri, 31 Oct 2008 16:15:36 -0700

For a project I am working on, i need to read from a log file in real time to keep track of program activity. Problem is, the log only flushes when the buffer of log messages reaches a certain size. Currently, I have a FileSystemWatcher class to notify me when the log flushes, at which point i copy the log file and scan for relevant entries. Is there a way to read the log messages as they are sent to the file IO buffer?

I want your advice

Mon, 20 Oct 2008 08:26:27 -0700

Hi to all of you
I am praparing for the :
Microsoft Exam 70-306
Developing and Implementing Windows-Based Applications with Microsoft Visual Basic .NET and Microsoft Visual Studio .NET

and I have almost finished reading the book:
MCAD/MCSD Self-Paced Training Kit: Developing Windows-Based Applications with Microsoft Visual Basic.NET and Microsoft Visual C#.NET, Second Edition

The book is very clear and good But: Does it focus on the skills needed by the Exam?

There is a study Guide that I can buy from TestKing and it mentioned it will be very helpful to pass the exam.

Have any of you tried it ?
Is it easier to study from before the exam than the book?

Waiting for your reply
Thanks

ebooks

Fri, 10 Oct 2008 22:47:06 -0700

ca please assist me the tutorial for .net , java

Using axwebbrowser control and thread locking app

Thu, 09 Oct 2008 08:01:04 -0700

When i try to run the program, it just hangs. If i remove the axwebbrowser control it works fine.

Any ideas?

Here is my code:

class1.vb
Imports System.Windows.Forms
Imports System.Threading

Public Class Class1
Public Shared form1 As New Form1

Shared Sub Main(ByVal Args() As String)
Dim t2 As Thread

t2 = New Thread(AddressOf screen)
t2.Start()

End Sub
Shared Sub screen()

form1.ShowDialog()
End Sub
End Class

Form
Public Class Form1
Inherits System.Windows.Forms.Form

#Region " Windows Form Designer generated code "

Public Sub New()
MyBase.New()

'This call is required by the Windows Form Designer.
InitializeComponent()

'Add any initialization after the InitializeComponent() call

End Sub

'Form overrides dispose to clean up the component list.
Protected Overloads Overrides Sub Dispose(ByVal disposing As Boolean)
If disposing Then
If Not (components Is Nothing) Then
components.Dispose()
End If
End If
MyBase.Dispose(disposing)
End Sub

'Required by the Windows Form Designer
Private components As System.ComponentModel.IContainer

'NOTE: The following procedure is required by the Windows Form Designer
'It can be modified using the Windows Form Designer.
'Do not modify it using the code editor.
Friend WithEvents AxWebBrowser1 As AxSHDocVw.AxWebBrowser
Friend WithEvents Button1 As System.Windows.Forms.Button
<System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()
Dim resources As System.Resources.ResourceManager = New System.Resources.ResourceManager(GetType(Form1))
Me.AxWebBrowser1 = New AxSHDocVw.AxWebBrowser
Me.Button1 = New System.Windows.Forms.Button
CType(Me.AxWebBrowser1, System.ComponentModel.ISupportInitialize).BeginIni t()
Me.SuspendLayout()
'
'AxWebBrowser1
'
Me.AxWebBrowser1.Enabled = True
Me.AxWebBrowser1.Location = New System.Drawing.Point(48, 24)
Me.AxWebBrowser1.OcxState = CType(resources.GetObject("AxWebBrowser1.OcxState" ), System.Windows.Forms.AxHost.State)
Me.AxWebBrowser1.Size = New System.Drawing.Size(300, 150)
Me.AxWebBrowser1.TabIndex = 0
'
'Button1
'
Me.Button1.Location = New System.Drawing.Point(440, 72)
Me.Button1.Name = "Button1"
Me.Button1.TabIndex = 1
Me.Button1.Text = "Button1"
'
'Form1
'
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(584, 272)
Me.Controls.Add(Me.Button1)
Me.Controls.Add(Me.AxWebBrowser1)
Me.Name = "Form1"
Me.Text = "Form1"
CType(Me.AxWebBrowser1, System.ComponentModel.ISupportInitialize).EndInit( )
Me.ResumeLayout(False)

End Sub

#End Region

Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
'Me.AxWebBrowser1.Navigate("http://www.ibm.com")
End Sub
End Class

Error when connecting to mysql database

Tue, 23 Sep 2008 02:58:36 -0700

I posted some questions about connecting to a mysql database in vb.net 2008.

Well it works super gr8 but theres only 1 problem :P.

If i want to run the program on a other pc then he gets an error when starts my program:

Zie het einde van dit bericht voor meer informatie over het aanroepen
van JIT-foutopsporing (Just In Time) in plaats van dit dialoogvenster.

************** Tekst van uitzondering **************
System.IO.FileNotFoundException: Kan bestand of assembly MySql.Data, Version=5.2.3.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d of een van de afhankelijkheden hiervan niet laden. Het systeem kan het opgegeven bestand niet vinden.
Bestandsnaam: MySql.Data, Version=5.2.3.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d
bij MailProgram.Form4.Button3_Click(Object sender, EventArgs e)
bij System.Windows.Forms.Control.OnClick(EventArgs e)
bij System.Windows.Forms.Button.OnClick(EventArgs e)
bij System.Windows.Forms.Button.OnMouseUp(MouseEventAr gs mevent)
bij System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
bij System.Windows.Forms.Control.WndProc(Message& m)
bij System.Windows.Forms.ButtonBase.WndProc(Message& m)
bij System.Windows.Forms.Button.WndProc(Message& m)
bij System.Windows.Forms.Control.ControlNativeWindow.O nMessage(Message& m)
bij System.Windows.Forms.Control.ControlNativeWindow.W ndProc(Message& m)
bij System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

WRSCH: registratie van assembly-bindingen is uitgeschakeld.
Als u assembly-bindingsfouten wilt registreren, stelt u de registerwaarde [HKLM\Software\Microsoft\Fusion!EnableLog] (DWORD) in op 1.
Opmerking: er is een prestatiestraf gekoppeld aan de registratie van assembly-bindingsfouten.
Als u deze functie wilt uitschakelen, verwijdert u de registerwaarde [HKLM\Software\Microsoft\Fusion!EnableLog].

************** Geladen assembly's **************
mscorlib
Assembly-versie: 2.0.0.0
Win32-versie: 2.0.50727.1434 (REDBITS.050727-1400)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50 727/mscorlib.dll
----------------------------------------
Supernova
Assembly-versie: 1.0.0.0
Win32-versie: 1.0.0.0
CodeBase: file:///C:/Users/Robrecht/AppData/Local/Temp/Rar$E X02.161/Supernova.exe
----------------------------------------
Microsoft.VisualBasic
Assembly-versie: 8.0.0.0
Win32-versie: 8.0.50727.1434 (REDBITS.050727-1400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/Microsoft.Vis ualBasic/8.0.0.0__b03f5f7f11d50a3a/Microsoft.Visua lBasic.dll
----------------------------------------
System
Assembly-versie: 2.0.0.0
Win32-versie: 2.0.50727.1434 (REDBITS.050727-1400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System/2.0.0. 0__b77a5c561934e089/System.dll
----------------------------------------
System.Windows.Forms
Assembly-versie: 2.0.0.0
Win32-versie: 2.0.50727.1434 (REDBITS.050727-1400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Window s.Forms/2.0.0.0__b77a5c561934e089/System.Windows.F orms.dll
----------------------------------------
System.Drawing
Assembly-versie: 2.0.0.0
Win32-versie: 2.0.50727.1434 (REDBITS.050727-1400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Drawin g/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll
----------------------------------------
System.Runtime.Remoting
Assembly-versie: 2.0.0.0
Win32-versie: 2.0.50727.1434 (REDBITS.050727-1400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Runtim e.Remoting/2.0.0.0__b77a5c561934e089/System.Runtim e.Remoting.dll
----------------------------------------
System.Windows.Forms.resources
Assembly-versie: 2.0.0.0
Win32-versie: 2.0.50727.1434 (REDBITS.050727-1400)
CodeBase: file:///C:/Windows/assembly/GAC_MSIL/System.Window s.Forms.resources/2.0.0.0_nl_b77a5c561934e089/Syst em.Windows.Forms.resources.dll
----------------------------------------
mscorlib.resources
Assembly-versie: 2.0.0.0
Win32-versie: 2.0.50727.1434 (REDBITS.050727-1400)
CodeBase: file:///C:/Windows/Microsoft.NET/Framework/v2.0.50 727/mscorlib.dll
----------------------------------------

************** JIT-foutopsporing **************
Als u JIT-foutopsporing wilt inschakelen, moet in het configuratiebestand voor deze
toepassing of computer (machine.config) de waarde
jitDebugging in het gedeelte system.windows.forms zijn ingesteld.
De toepassing moet ook zijn gecompileerd terwijl foutopsporing
was ingeschakeld.

Bijvoorbeeld:

<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>

Wanneer JIT-foutopsporing is ingeschakeld, worden onverwerkte uitzonderingen
naar het JIT-foutopsporingsprogramma gestuurd dat op de computer is geregistreerd
en worden niet door dit dialoogvenster verwerkt."^

I hope someone can help me?

Pinvoke DLL Need help

Tue, 16 Sep 2008 13:07:14 -0700

I am trying to complete my project with third party dll using vb.net ,
i cant call the function RDA_ReadAlarmList as below ,
this function call return a integer value and receive the RDA_ReadAlarmList Structure and RDA_AlarmSearchParam as a parameter.

Hope the bro here can help me on this , already headache for few week on this .. what --> RDS_AlarmList **outAlarmList means ?
Structure array ? How should i call this in vb.net ?

Function
10.8.1 It acquires an alarm list ( The asynchronousness ).

int WINAPI RDA_ReadAlarmList(RDS_AlarmList **outAlarmList, RDS_AlarmSearchParam *inAlarmSearchParam);

Structure
11.8.4 The alarm list search parameter
typedef struct {
RDE_SearchDir dir; The direction of the search
RDE_SearchMode mode; The browse mode
int num; The number of the searches (1-1000)
bool senser[16]; The sensor true...The sensor is valid.
int year; The year ( The 4 digit Christian era )
int month; The month (1-12)
int day; The day (1-31)
int hour; The hour (0-23)
int minute; The minute (0-59)
int second; The second (0-59)
} RDS_AlarmSearchParam;

11.8.4 The alarm list item
typedef struct {
int listNumber; The list supervision number (0-9999)
int alarmNumber; The alarm list number (1-10000)
bool isEnable; The alarm validity / the invalidity ( true: Valid, false: Invalid )
int year; The year ( 4 digits )
int month; The month (1-12)
int day; The day (1-31)
int hour; The hour (0-23)
int minute; The minute (0-59)
int second; The second (0-59)
int block; The device index
int field; The field number
int drive; The playback point drive number
int vol; The playback point VOLUME number
int camera; The camera number ( 0: The emergency, 1-: The camera number )
RDE_Alarm alarmType; The alarm type
} RDS_AlarmList;

Solution of all type of .NET programming error

Mon, 15 Sep 2008 21:57:44 -0700

Dear Friends,

get solution of all type of programming bugs in AJAX, VS.NET,ASP.NET,Web service, Sql server and much more

Click below link to get solution.

http://bugtrace.blogspot.com

Word to PDF By Programmatically

Tue, 09 Sep 2008 00:19:03 -0700

Dear All,

Greetings~

We have new project and its objective is to convert word document into PDF using C#.

Step 1: Open the Word Document
Step 2: Initialize the settings for printing*
Step 3: Print the document to PDF.

*
Layout: same as word document
margin: All margins 1 Inches
Paper Size: Letter

I have doubt in Step 2 and Step 3. Could you help me to complete step 2 and step 3. Any suggestions would be really a great help for me since i am beginner in C#.

Thanks in advance
Ram

Need some career advice.

Mon, 08 Sep 2008 12:40:33 -0700

http://www.abington.psu.edu//psasite/ce/ocprodev/net.html#intro

I am thinking of getting into programming. I have been in IT support for the last 8 years (I am sure that experience is not helpful). To be honest I am a bit scared. My fear, "Is this the right choice for me?" I know I want to get into programming, but there are so many choices. What kind of traits do you need to be a programmer? Thanks in advance for your responses.

DOT NET Interview Questions

Sun, 07 Sep 2008 22:35:10 -0700

Dear Friends,

Huge collection of DOT NET Interview questions including ASP.NET,ADO.NET,Visual Source safe, DOT NET Framework,OOPS. this material will be very helpful to you in interview.

Visit

http://aspnet2008.blogspot.com/

Free IT Books, Free Java books, Free J2EE books, Free .NET books

Fri, 29 Aug 2008 23:38:22 -0700

Dear Friends,

You are free to download ebooks of AJAX, ASP.NET, VB.NET, SQL Server, PHP, JAVA, software, oracle, Unix, Google Adsense, Linus, SAP, Pearl and much more.

Download from
http://freedownload12.blogspot.com/

FREE .NET EBOOKS

Tue, 26 Aug 2008 12:10:53 -0700

hi,

You can find really helpful .NET books at the following link...

http://books-pdf.blogspot.com/search/label/Free%20.NET%20eBooks

http://books-pdf.blogspot.com
http://freebooksandmagazines.blogspot.com
http://www.ebooksboard.com/

Windows Mobile Applications

Mon, 25 Aug 2008 23:40:22 -0700

Which namespace i can use for database connectivity in .NET 2.0 for windows mobile applications

Using Interop to Interact with VB6 ActiveX (COM) Objects

Mon, 18 Aug 2008 09:40:13 -0700

I'm having an Interop problem that can be simplified to the following scenario:

DLL A, written in VB6, exposes a COM object named Widget.

DLL B, written in VB6, references DLL A and exposes a COM object named Test with a method named TakeIt that takes a parameter that is an array of Widgets.

Program C, written in VB.NET, imports DLL A and DLL B. It creates an array of Widget objects and passes it to the TakeIt method of a Test object.

This generates a System.ArgumentException with a parameter name of typeName@0.

Individual Widget objects can be passed without problem. If the Widget object is exposed by DLL B rather than DLL A, so that Test and Widget are defined in the same DLL, array passing succeeds.

If anyone would like sample code demonstrating this problem, I can provide it.

Server's COM in client context

Wed, 13 Aug 2008 07:01:03 -0700

Hello.

I'm trying to create COM object (ASP.NET) - server side that will be in the context of the client's web configuration.

Is it a IIS configuration? Assembly config?

Any help will be great.

Issue with WCF service

Tue, 12 Aug 2008 03:42:04 -0700

We have a WCF service running on IIS in one of the machine. This service is supposed to write a file on another machine.

We follow the windows credentials for authenticating the client and carry the same credentials to write a file on the other machine.

Our network setup doesn’t allows to do so. When we try to access a remote machine with the client credentials it does throws an exception as stated below.

================================================== ================================================== ===================

System.UnauthorizedAccessException: Access to the path '\\....\.....\abc.txt' is denied.

================================================== ================================================== ==================

When we try to mount the client and the server in the same machine, it works out well. In another case when we try having a client and server in two different machines and write a file on server it works well

Problem arises when we try to have all three in 3 different machines.

When we tried in Microsoft Knowledge base and other codeplex sites, it stated,

Use Delegation to Access Network Resources

If your WCF service runs under the Network Service account, configure your computer account in Active Directory to be trusted for delegation.

Even we tried this but result is the same.Can anyone help me on this.Pls provide the settings that should be provided for the delegation in the web.config and app.config.