Visual Basic

Tom Deketelaere9-Jun-09 2:22

Tom Deketelaere

9-Jun-09 2:22

2 possible solutions that I see:
0) Don't do the code that changes everything in the 'selectedindexchanged' event.
Do it in a 'Save settings' button or so.

1) Maintain a boolean variable 'ImWorking' (dummy name Smile | :)

) (on form level). While your code is running change this boolean to 'True'. First thing in your 'selectedindexchanged' event is check this boolean. If the boolean is true than exit the event (exit sub)

My choice would be first one.
This allows for the user to misclick without having to wait for the language change to have ran its course.

binjafar9-Jun-09 2:25

9-Jun-09 2:25

You have possibly two ways to do this...

1. use SelectionChangeComitted event (recommended)

2. use some global variable Flag that u set to 'true' once all the comboBox is filled up... before comboBox is completely filled..this flag should remain 'false'... later on in ur code... just check if the flag is set to 'true' before doing what ever u do upon item selection.

Enjoy!

Hypermommy9-Jun-09 5:14

Hypermommy

9-Jun-09 5:14

SelectionChangeCommitted was exactly what I need!! Thanks!!!!! Never even knew that it existed but it's just what I needed.

Denise "Hypermommy" Duggan

binjafar9-Jun-09 8:14

9-Jun-09 8:14

Enjoy!

How to check Application is run by Administrator

Henry Minute9-Jun-09 8:25

Henry Minute

9-Jun-09 8:25

An excellent solution. I too was unaware of this event. Thumbs Up | :thumbsup:

Henry Minute

Do not read medical books! You could die of a misprint. - Mark Twain
Girl: (staring) "Why do you need an icy cucumber?"
“I want to report a fraud. The government is lying to us all.”

Anubhava Dimri9-Jun-09 2:05

Anubhava Dimri

9-Jun-09 2:05

Hi All,
I have two application.First one is Used for Calling Second Application. Second runs alwase with Admin Rights.

When I am trying to start process of Second Application then it reqire admin rights with Passord and Cancel Button.

Then How to check it in first application The second application is run by Admin rights or not.

Thanks

If you can think then I Can.

Re: How to check Application is run by Administrator

Eddy Vluggen9-Jun-09 7:05

Eddy Vluggen

9-Jun-09 7:05

From MSDN[^];

// Get the role using the WindowsBuiltInRole enumeration value.
Console.WriteLine("{0}? {1}.", WindowsBuiltInRole.Administrator,
   myPrincipal.IsInRole(WindowsBuiltInRole.Administrator));

I are troll Smile | :)

Impossible to access to the properties of Usercontrol, since a HTML page with javascript [modified]

tdc_david9-Jun-09 1:25

tdc_david

9-Jun-09 1:25

Hi,first say that if the place for this post isn't correct, sorry but I don't if the correct place is within Java,Vb o Winform xD

Create a usercontrol with a single textbox and one property that set the textbox and get the value of the textbox. This usercontrol is embedded in HTML page. I can change the value of the textbox perfectly but isn't possible access to usercontrol with javascript.

When I create the instance to the usercontrol can get access but out the object tag is impossible .... my code is this ...

VB CODE:
<pre>
Public Class SerialPort

      Inherits System.Windows.Forms.UserControl

      Public Property Age() As String

            Get

                  Return Me.Age.Text

            End Get

            Set(ByVal Value As String)

                  Me.Age.Text = Value

            End Set

      End Property

End Class
</pre>

HTML CODE:
<pre>
<html>
<body>
<form name="form1">
<object id="SerialPort" classid="UserSerialPort.dll#UserSerialPort.SerialPort" height="399" width="651">
<param name="age" value="48">
</object>
</body>
<br/>
<input type="button" name="btage" value="Age" onClick="getage();">
script language="javascript">

     var objserial;

     objserial = document.getElementById("Serialport");

     function getage()
     {
          var quedevuelve;
          quedevuelve = objserial.age;
          alert(quedevuelve);

     }
</script>
</form>
</html>
</pre>

The first part, work correctly, send the value "age" with value 48 and this is reflected in the usercontrol, but the next call to function javascript return undefined, I haven't found any solution for it ...

If anyone can help I would greatly appreciate it, a greeting.

modified on Tuesday, June 9, 2009 7:35 AM

Re: Impossible to access to the properties of Usercontrol, since a HTML page with javascript

Christian Graus9-Jun-09 1:53

Christian Graus

9-Jun-09 1:53

tdc_david wrote:
Hi,first say that if the place for this post isn't correct, sorry but I don't if the correct place is within Java,Vb o Winform xD

um.... ASP.NET forum ?

Christian Graus

Driven to the arms of OSX by Vista.

"! i don't exactly like or do programming and it only gives me a headache." - spotted in VB forums.

I can do things with my brain that I can't even google. I can flex the front part of my brain instantly anytime I want. It can be exhausting and it even causes me vision problems for some reason. - CaptainSeeSharp

Re: Impossible to access to the properties of Usercontrol, since a HTML page with javascript

tdc_david9-Jun-09 2:14

tdc_david

9-Jun-09 2:14

ASP.NET no, because the page is only HTML with javascript....

Re: Impossible to access to the properties of Usercontrol, since a HTML page with javascript

Dave Kreskowiak9-Jun-09 3:15

Dave Kreskowiak

9-Jun-09 3:15

So that makes you ask in the VB.NET forum??

A guide to posting questions on CodeProject[^]

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

Re: Impossible to access to the properties of Usercontrol, since a HTML page with javascript

tdc_david9-Jun-09 4:18

tdc_david

9-Jun-09 4:18

Because my code had two parts, the first is in vb.net and second is html/javascript.

I would appreciate that instead of questioning the place of the wire we can concentrate more on the problem ... Thanks.

Re: Impossible to access to the properties of Usercontrol, since a HTML page with javascript

Dave Kreskowiak9-Jun-09 6:22

Dave Kreskowiak

9-Jun-09 6:22

Your problem has to do with JavaScript and ASP.NET, not VB.NET. Even after writing VB code for the last 13 years, I couldn't tell you what's wrong with it. It'll work perfectly in the Windows Forms application. I have no idea what mechanism JavaScript uses to communicate with your object.

A guide to posting questions on CodeProject[^]

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

[Help]VB6 + Webbrowser + Iframes + Different Domains]

Lord Engel9-Jun-09 1:02

Lord Engel

9-Jun-09 1:02

1 - The Situation:
I'm Using "Visual Basic 6"
I'm Using "Webbrowser Control"
I'm Using "Microsoft HTML Object Library"

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

2 - What I Want:
*Acees objects (buttons, links, etc) on a IFRAME
*Get all links for example, click in links, etc...

This is easy... but...

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

3- THE PROBLEM:
The page A is in www.abc.com
The page B is in www.xyz.com
The Page A contains one iframe to page B
I Can't acess elements in Iframes with diferrent domains using normal methods.

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

4 - Example:

PAGE A.html (www.abc.com/PageA.html) ==>
<html>
<body>
THIS IS THE PAGE A!<Br>
PAGE A contains one Iframe to PAGE B!<br>
<Iframe id="PageB" name="PageB" src="http://www.xyz.com/PageB.html">
</body>
</html>

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

For example, if a try to get links of page B (iframe) pufff...
"{"Access Denied. (Exception from HRESULT: 0x80070005 (E_ACCESSDENIED))"}"

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

5 - The phrase for the more experienced are:

Nothing is impossible! you know!
How can I then perform this procedure?

Thanks

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

Re: [Help]VB6 + Webbrowser + Iframes + Different Domains]

DaveAuld9-Jun-09 1:37

DaveAuld

9-Jun-09 1:37

Hmmm,

This looks like a distinct case of cross site scripting (XSS) security, and for security reason is probably being blocked by the browser (WebBrowser control)

Just a thought as I know nothing about XSS.

Dave

Dave
Who am I?: http://www.bebo.com/daveauld/
or http://www.dave-auld.net/

Re: [Help]VB6 + Webbrowser + Iframes + Different Domains]

Lord Engel9-Jun-09 1:48

Lord Engel

9-Jun-09 1:48

Probably!
But if you notice, some extensions like:
* IE Developer Toolbar (IE)
* Firebug (FF)
can access any element.
This shows what is possible.

Re: [Help]VB6 + Webbrowser + Iframes + Different Domains] [modified]

DaveAuld9-Jun-09 3:52

DaveAuld

9-Jun-09 3:52

I would suspect that is because they are browser plug-ins that can interface with all data the browser sees.

You are talking about a web page reading another web page DOM.

[editing now i have re-read your post again to undetstand the problem more!]

Can you read the source attribute of the iframe? if so why not read that directly and access the source data directly?

Dave
Who am I?: http://www.bebo.com/daveauld/
or http://www.dave-auld.net/

modified on Tuesday, June 9, 2009 9:59 AM

Re: [Help]VB6 + Webbrowser + Iframes + Different Domains]

Lord Engel9-Jun-09 4:20

Lord Engel

9-Jun-09 4:20

You Know any possible solution?

Maintain whitespace between strings

Member 45142188-Jun-09 23:33

Member 4514218

8-Jun-09 23:33

Hello friends,
I tried converting lower case char to upper case and vice versa
it works fine with the following code

Dim abc As String
Dim xyz As String = String.Empty
Dim a As Char
Console.WriteLine("Enter The String")
abc = Console.ReadLine()
For Each a In abc
Dim b As Char
If Asc(a) > 64 And Asc(a) < 91 Then
b = Chr(Asc(a) + 32)
ElseIf Asc(a) > 96 And Asc(a) < 123 Then
b = Chr(Asc(a) - 32)
End If

xyz = xyz + b
Next

Console.WriteLine(xyz)
Console.ReadLine()

case 1 Input : ABCdef
Output: abcDEF

case 2 Input :ABC def GHI
Output:abccDEFFFghi
Desired Output:abc DEF ghi

The issue is maintaining the whitespace between the strings, with the current code the the whitespaces are replaced by the previous charcter in the output.
I like the whitespaces between the strings to be maintained .

Thanks In Advance
Praveen

Christian Graus8-Jun-09 23:59

Christian Graus

8-Jun-09 23:59

Member 4514218 wrote:
If Asc(a) > 64 And Asc(a) < 91 Then
b = Chr(Asc(a) + 32)

What an ugly, ugly mess. Char.IsAlpha is what you need, from memory. And Char.ToLower.

How about abc = abc.ToLower()

Member 4514218 wrote:
If Asc(a) > 64 And Asc(a) < 91 Then
b = Chr(Asc(a) + 32)
ElseIf Asc(a) > 96 And Asc(a) < 123 Then
b = Chr(Asc(a) - 32)
End If

xyz = xyz + b

The core flaw in your logic is that you need another else.

else
b = a

Otherwise, anyting that is not a lower or uppercase character, is lost.

you look like you're coming from VB6, that's where all the nasty habits are coming from. Forget VB6, learn to use VB.NET properly. And, learn to use the debugger, if you stepped through this code, you'd have seen in no time what the issue was.

binjafar9-Jun-09 0:01

9-Jun-09 0:01

very simple...just add one 'Else'... as below...!

Dim abc As String
Dim xyz As String = String.Empty
Dim a As Char
Console.WriteLine("Enter The String")
abc = Console.ReadLine()
For Each a In abc
Dim b As Char

If Asc(a) > 64 And Asc(a) < 91 Then
b = Chr(Asc(a) + 32)
ElseIf Asc(a) > 96 And Asc(a) < 123 Then
b = Chr(Asc(a) - 32)
Else
b = a
End If

xyz = xyz + b
Next

Console.WriteLine(xyz)
Console.ReadLine()

Enjoy!

Member 45142189-Jun-09 6:22

Member 4514218

9-Jun-09 6:22

Thanks binjafar
It is simple and effective

Regards
Praveen

binjafar9-Jun-09 8:15