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Hi, Is this[^] answer to what you need?
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Hello everybody. how do I open MDIChild Form from MDIChild Form? (VB.Net)
-- modified at 21:34 Monday 8th May, 2006
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Hi, you came from the same country like me too.
roitha wrote: how do I open MDIChild Form from MDIChild Form?
Do you need the code to open MDI form in vb.net or vb6?
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Hi,
What vb.net form events do we use when we need to detect if the "up" arrow key has been pressed? (down and up)
Right now, I am programming a simple "mario" game. When I press the up arrow key once, Mario has to jump up and land down in one smooth motion, just like in the original Nintendo Mario game.
The Mario character is represented by an Imagebox displaying the mario cartoon character.
I use the key down event handler but the problem is, once I let go of the up arrow key, Mario immediately stops. If mario is in the process of jumping up, it will just stop there in mid air. I have to press the up key continuously for the jumping motion to complete smoothly.
What event handler and keyboard code should I use for the "press a key once" event?
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There is no event to handle directly for Arrow keys. Yes if you are talking about regular keys like A,B etc then keypress event will work. on Your situation use form level variable
on KeyDown Event set the time in that variable and on key up check the time of keydown and this way you can calculate that how much time the key was pressed . or if it has no concern with your applicaiton then only use KeyUp event of the container .
Rizwan Bashir
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I need the code relenvent code for How to Connect "Oracle" and SQL Server in Visual Basic .
ritesh banerjee
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In
Date.ParseExact(s as String,format as String,provider as system.IFormatProvider) as date,
what is provider as system.IFormatProvider argument refers?
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A CultureInfo or DateTimeFormatInfo object.
---
b { font-weight: normal; }
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hi guys ur frnd is looking for u, regarding...
I have created one chart in an excel file using VB.net. so I want to copy that chart and paste onto new power point slide and save it as new .ppt file?
I know that how to make a chart based on some excel data in the same excel file, latter I know how to save it. but the problem is I'm unable add that chart into ppt slide file.
I tried several times, but everytime ppt file is created with plunty of slides with one cell value of the excel sheet. I don't know what's the wrong with in.
let me know the process of this implementation?
want to be best student for ever.
-- modified at 0:54 Wednesday 10th May, 2006
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how can we fill hindi data in text box using vb.net
Amit Sharma
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For multi-lingual support you need to install regional language from Control Panel instead of any programming language. once it is added . you can switch from English to Hindi and write what ever you want and where ever you want.
Rizwan Bashir
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in listview, how can i label edit subitem same to edit item text ?
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Search for custom list view in Articles and you will find the answer
Rizwan Bashir
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Well I have been pulling my hair out for ages now trying to work a way around this problem.
My VB code simply gets a row of data from a table an then passes it to my ATL COM which takes one paramter as an array pointer.
I keep getting the Type Mismatch before my COM gets called and this is documented by Microsoft here: http://support.microsoft.com/kb/818982/
<br />
System.Runtime.InteropServices.COMException (0x80020005): Type mismatch.<br />
at Microsoft.VisualBasic.CompilerServices.LateBinding.InternalLateCall(Object o, Type objType, String name, Object[] args, String[] paramnames, Boolean[] CopyBack, Boolean IgnoreReturn)<br />
at Microsoft.VisualBasic.CompilerServices.LateBinding.LateCall(Object o, Type objType, String name, Object[] args, String[] paramnames, Boolean[] CopyBack)<br />
I have all the service packs installed but I still keep getting the error so I can only assume its something Im doing. Can anyone help or suggest a work around ?
VB Snippet
<br />
Dim arrJumpTable As Object<br />
rs = CreateObject("ADODB.Recordset")<br />
rs.open(strSql, my_Conn)<br />
arrJumpTable = rs.GetRows()<br />
rs.Close()<br />
rs = Nothing<br />
<br />
Dim obj As Object<br />
obj = CreateObject("Trader.Mapper")<br />
Call obj.LoadMap(arrJumpTable)<br />
<br />
ATL COM<br />
<br />
STDMETHODIMP CMapper::LoadMap(VARIANT* vptrData)<br />
...<br />
<br />
__interface IMapper : IDispatch<br />
{<br />
<br />
[id(2), helpstring("method LoadMap")] HRESULT LoadMap([in] VARIANT* vptrData);<br />
};<br />
<br />
The array may contain in excess of 5000 entries and needs to be processed fast, hence using C++ for implementing a complex version of Dijkstra's Algorithm which works well in VB but takes around 45 seconds to to run. At the end of the day I need to access this COM object using VBScript fro a web page so the VB snippet above is from the test harness. Im still trying to get my head around ATL COM so its a bit of an uphill struggle at the moment.
I can call up other properties and methods in the COM object ok so I feel sure I have it built right.
I really appreciate any help here.
Thanks, Kess
Trying hard to get it to work 
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how do I use event with Datagridviewcolumn in datagridview control?
can you send me a code project about some event usage with datagridviewcomboboxcolumn?
my email address: sumroitha@yahoo.com
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it have in msdn, search it.
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thank for your answer. but I need Datagridview control not Datagrid control.
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I want to put a button in Outlook that saves the users selected emails into a directory. Can anyone point me in the right direction.
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I stole this snippet from a C# forum and converted it into VB. It's a routine for searching files recursively. When i test it however, I get the "Access to the path 'C:\System Volume Information' is denied." error. I've tried the old VB6: On Error Resume Next. Doesn't work thou. Any way to get around it?
Private Sub DirSearch(ByVal sDir As String)
Dim arrLst As New ArrayList
Dim _dir As String
Dim _file As String
Try
For Each _dir In Directory.GetDirectories(sDir)
For Each _file In Directory.GetFiles(_dir, txtFile.Text)
arrLst.Add(_file)
Next
DirSearch(_dir)
Next
Catch ex As Exception
Debug.Print(ex.Message)
End Try
End Sub
Thanks
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Add some try/catch block to your code and handle the exception.
--------------------------------------------------------
My portfolio & development blog
Q:What does the derived class in C# tell to it's parent?
A:All your base are belong to us!
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Well, that's because you don't have enough permission to access that directory. You can just ignore that by moving the Try Block inside the loop, like this :
Private Sub DirSearch(ByVal sDir As String)
Dim arrLst As New ArrayList
Dim _dir As String
Dim _file As String
For Each _dir In Directory.GetDirectories(sDir)
Try
For Each _file In Directory.GetFiles(_dir, txtFile.Text)
Try
arrLst.Add(_file)
Catch ex as IOException
Continue
End Catch
Next
DirSearch(_dir)
Catch ex as IOException
Continue
End Try
Next
End Sub
That should fix it. The Continue statements continue the loop into the next iteration, so that exception should be ignored..
Yuvi Panda T
15 year old Microsoft Student Partner
Blogs at : http://yuvipanda.blogspot.com
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hello everybody.
a simple unsolvable question:
is it possible to emulate a click on the windows taskbar "disconnect" button,so to obtain the corresponding dialog box(e.g. the one in windows xp has got the "Change user" and "Log Off" buttons)?
I ask this because i have gave up hope to find a relative API,like SHShutDownDialog to show the shutdown dialog box..
Can someone please help?
many thanks in advance..
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or at least how to obtain the Logoff button handle to use with "findwindowex" API...
i searched for it with spy++,but no result(at best i found the "All programs" button in Start menu taskbar,but not the Shutdown nore the Logoff one)
help
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no idea?
please please please....
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