Unable To Use DGV In Windows 7 64 Bit?
May 23, 2010
I have written an application that uses a DataGridView to display 740 rows, there are currently around 25 columns in my list. Have noticed in Win 7 64 bit that when I scroll the final row repeats, say 20 times, before it refreshes, its as if the display of my laptop cant keep up. Now this is a brand new Dell XPS i7 lappy with Radeon 4670 graphics so that should be fine.Also, the rows in the DGV seem to flicker a little, like it is constantly trying to refresh.My DGV works fine on Win XP.
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Mar 12, 2010
I have a .net Windows Service developed in VB.net. I have a settings file in the root directory called Connections.XML and I am setting the basedirectory [code]...
When I schedule the service this is working absolutely fine in my Windows XP machine. But when I installed the same service in our development server (Windows 2003 64 bit Server) for some reason it is not able to locate this file.
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Nov 28, 2009
I code to drag files from windows explorer to a listbox. The code works in XP and Vista, but not Windows 7. In Win 7
Private Sub ListBox1_DragEnter(ByVal sender As Object, ByVal e As System.Windows.Forms.DragEventArgs) Handles ListBox1.DragEnter e.Effect = DragDropEffects.All
End Sub does not respond.
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Oct 14, 2010
not able to run vs2005 in windows 7
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Apr 25, 2011
I have developed an application in VB.net 2008 having SQL Server 2000 as back end. I am running the application with MSDE 2000 on Windows XP. Now I have switched to Windows 7 from XP. I am unable to run the application on Windows 7 as it is not connecting to database.Can somebody help me to to run the application through MSDE 2000 without upgrading it to SQL EXPRESS 2008 on Windows 7. What I feel is that it could be caused by the Authentication Mode of MSDE 2000 in Windows 7.
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Dec 20, 2010
I have a VB.NET application that will let me preview .DBF files that come in from some of our clients. The application then attempts to spit out a CSV from this file that we can then use in our various environments. This application worked under Windows XP 32 bit. Our company recently upgraded most of us to Windows 7 x64 which has caused this application to fail. I verified that the target build for this application is x86 and not "any CPU" and rebuilt the app but same issues occur.
It originally used System.Data.Odbc and connection.ConnectionString = "Driver={Microsoft dBASE VFP Driver (*.dbf)};SourceType = DBF;SourceDB=" & dbfSourcePath & ";Exclusive=No; Collate=Machine;BACKGROUNDFETCH=NO;".
The location of the failure is at connection.Open(). The error given is: "ERROR [IM001] [Microsoft][ODBC Driver Manager] Driver does not support this function".
I noticed that the drivers for VFP were not installed and that the Access DBF drivers did not work similar to the post here. The fix listed there is to install VFPro SP2, however, we do not have any FoxPro installs to install a service pack on top of. I then tried to install the OLEDB driver for VFP 9.0 and am now using System.Data.OleDb and connection.ConnectionString = "Provider=VFPOLEDB.1; ourceDB=" & dbfSourcePath & ";" but it now tells me that the connection.Open() line has this error: "Feature is not available".
I am at a complete loss as to how to get this application to work under Windows 7 x64. Below are the 2 variants of the code with the file open path removed for readability (I have verified the path and file exist):
ODBC version:
Imports System.Data.Odbc
Dim strSelect As String
strSelect = "SELECT * FROM " & dbfSourceName
[Code].....
How can I use either an OLEDB or ODBC connection to open these .DBF files under Windows 7 x64?
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Jun 30, 2011
I'm working on creating a windows service that will send emails to a customer when they are within a month of having their submission expire. I'm using vb.net in Visual Studios 2008
Because it's a windows service it's very difficult to debug. Trying to narrow down my error I created a "sendDebugEmail" method that sends me an email if it gets to a certain line. The emails never make it past "dr = cmd.ExecuteReader()"
I'm wondering what I am doing wrong. My SQL statement should work fine. I've tested it in my SQL server database.
I've created a dummy_database that I just made in sql server as well. I added an INSERT sql statement for the dummy table i have in there just to see if i could actually access a database. All the table takes in is the line number and time it was sent. When I run my windows service that database updates just fine.[code]...
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Jul 14, 2010
I'm calling a method that will produce a log file, and I'm passing Today() and TimeOfDay() to this method. It works fine in XP, but in Windows 7 an exception is being produced saying I don't have permissions to update the system time. I'm not even trying to update the system time, just use it but it still gives me this error.
Here is my function call:
Call addAuditTrailEntry(Today, TimeOfDay, queuedFile(i).weekOf, queuedFile(i).product, queuedFile(i).status, queuedFile(i).controlNum, queuedFile(i).originalFilename, queuedFile(i).saveFilename, queuedFile(i).sentFilename, hostToUse,
queuedFile(i).hash)
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Jun 12, 2009
I am developing an application to play sound effects. I intend to have four seperate channels that can each play their own file.Seems a bit slow - can I buffer the files or is there an alternative to the Url property?Can I drag-drop onto this control? I have set the AllowDrop property to true, but I cannot find the event handlers for DragEnter, DragLeave and DragDrop that need to be handled to allow dragging and dropping.Is there a way to fix this or do I need to find an alternative? If I need an alternative, it must Be able to play any type of media file - mp3, wav, ideally midi.Have adjustable pan and volume?Be able to loop a track?Be quick at loading a file??Be able to mute?Ideally have some form of VU meter or something like that.?Be able to be dropped on to.The other thing that would really be awesome would be if I could have an option that would route each player to an individual output on the sound card; I have an 8-out sound card, and it would be great if I could send player one to outputs 1/2, two to 3/4 and so on.
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Jan 28, 2011
I've been sporadically going back to over the course of a few weeks and am unable to resolve. In Windows 7 (I'm using the 64 bit professional edition) I am unable to drag and drop files. I know the code works as I've been using the application on a 32 bit XP for ages.I've set the allowdrop property for both the main form and the status strip.[code]I've knocked the UAC settings down a notch and this doesn't do anything either. Interestingly, it's not even showing any of the dragdrop effects when dragging files or outlook emails into them.
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Jun 12, 2011
i need to get data from checkbox in a groupbox. in the groupbox, it also have a label. so my coding as below
[Code]...
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Jun 25, 2010
We have a VB .Net application that is targeted to the .Net Framework version 2, over the past couple of days users have been reporting that they are getting the following error message when running the program?
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May 22, 2007
I just installed Visual Basic 2005. I am having problems registering the windows media player on my toolbox.I followed the instructions on Article 821767 titled "How to play audio files using Visual Basic .NET or Visual Basic 2005", and selected the msdxm.ocx COM component. I keep getting a "Self-registration for C:WindowsSystem32msdxm.tlb failed" message.
I am using Windows VISTA and I have installed SP1 for VS2005. The VS2005 is run as Administrator.
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Jun 16, 2011
Using the following code
ControlCommand("Test Form", "", "[NAME:ctlMsgQueueCombo]", "ShowDropDown")
ControlSend("Test Form", "", "[NAME:ctlMsgQueueCombo]", "This is my default value (TEST) - First")
or
ControlCommand("Test Form", "", "[NAME:ctlMsgQueueCombo]", "ShowDropDown")
ControlSend("Test Form", "", "[NAME:ctlMsgQueueCombo]", "select", "This is my default value (TEST) - First")
It selects the combo box but not selecting the desired "this is my default value (TEST) - First" from the list. Basically what it is doing is selecting any value that starts with t . e.g first value is "TMP". So instead of exactly matching it is selecting any first character match.how to force it to select the exact string from list.Also tried using the following code but nothing seems to work
WinWaitActive($title)
$Index = _GUICtrlComboBoxEx_FindStringExact($hcombo, $sText)
_GUICtrlComboBoxEx_SetCurSel($hcombo, $Index)[code].....
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Mar 29, 2012
I have developed a vb.net application, which searches for different kinds of dates from a document. When i test the app on my Windows 7, VS2010 PC, the dd/mm/YYYY date read as string is correctly converted to valid date format, and then it can perform followingfunctiontstimespan =Date.Now.Subtract(Convert.ToDateTime(DesiredMatch.Value)).DurationIt works fine on development PC. But when i test the application on my client PC having Windows XP, it throws an error 'string was not detrmined as valid date time windows'.
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Nov 24, 2010
I have a Windows Service that needs to start other processes under a user context other than that used by the service. I've seen other posts related to this but have seen no resolutionI've tried many things and have been unsuccessful in starting the process from a Windows Service when a username, password is supplied. orking as it's a requirement of our system to do this and it worked fine until recently and only fails on Vista and Windows 7 (works on XP).
The following code is used to start the process.
Dim P As New Process
P.StartInfo.Domain = Domain
[code].....
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Jun 12, 2011
I have a form contain 10 checkbox. how to count total checkboxes that has been checked? i search over the internet but not found any solution. please help me. i found a code, but when i apply it on my project it says "Unable to cast object of type System.Windows.Forms.MenuStrip' to type Component Factory. Krypton.Toolkit.KryptonCheckBox'".i think i have problems with Me.Controls(on the code)[code]
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Feb 19, 2010
I have a windows 7 computer with vb 2008 express on it. it works really well, except only one thing. when I try to debug an application ( usually windows forms), it produces a run-time error saying: Error while trying to run project; unable to start debugging.
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May 20, 2010
I've got a Child form being shown with it's TopLevel property set to False and I am unable to click a MaskedTextBox control that it contains (in order to bring focus to it). I can bring focus to it by using TAB on the keyboard though.
The child form contains other regular TextBox controls and these I can click to focus with no problems, although they also exhibit some odd behavior: for example if I've got a value in the Textbox and I try to drag-click from the end of the string to the beginning, nothing happens. In fact I can't use my mouse to move the cursor inside the TextBox's text at all (although they keyboard arrow keys work).I'm not too worried about the odd TextBox behavior, but why can't I activate my MaskedTextBox by clicking on it?
Below is the code that shows the form:
Dim newReportForm As New Form
Dim formName As String
Dim FullTypeName As String
Dim FormInstanceType As Type
[code].....
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Mar 18, 2011
What I have is on my form there are several text boxes. These text boxes are for user input and attached to each text box is a Private Sub txtBox1_KeyPress function. In that function I have some validation code to check that the user is inputing only what I want them to. And if it doesnt it will pop up a message box telling them so, then it is supposed to clear the text box so the user can try again. But no matter what I try, the text box does not clear it still keeps the last character typed (the invalid one).
Here is the code for one of the text boxes.
Private Sub txtLanIp_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles txtLanIp.KeyPress
Dim strEmpty As String = ""
If Char.IsDigit(e.KeyChar) = True Or Char.IsPunctuation(e.KeyChar) = True Or Char.IsControl(e.KeyChar) = True Then
'do nothing
[code]....
The commented methods at the bottom are some of the other things ive tried to make this work. The txtLanIp.text.clear() is what ive tried from the beginning. I have also tried setting the text to "", I even created an empty string and set the .Text value to it but no matter what it wont remove that character. I have also tried various trim(), len(), Select() functions, most either give me an 'index out of range error', a 'length cannot be less than zero' error or a general ExceptionOutOfBounds error. I am just tearing my hair out as to why the simple way doesnt work, there is no logical reason why and it gives no error it just doesn't clear the box.
I have also tried moving the validation to a _LostFocus but e.KeyChar isnt a valid method or property for that declaration, which doesn't surprise me but I wanted to try everything.I dont see how it would matter in this case but I am running Windows XP Pro SP3, though I also see the same behavior in Windows 7 64 bit ultimate sp1 and windows 7 64 bit pro.
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Nov 7, 2009
When executing this code I get this error:
Unable to cast object of type 'System.Windows.Forms.MouseEventArgs' to type 'System.Windows.Forms.DataGridViewCellMouseEventArgs'.
Private Sub NoteGrid_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles NoteGrid.CellContentClick
Try
[code]....
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Apr 28, 2009
I have a panel with some controls in it (several textboxes, a slider, 2 buttons, and a small groupbox).. When I click a button, I want all of the textboxes within the panel to be readonly... So I have this code: [code] When I run it though, I get the following error:Unable to cast object of type 'System.Windows.Forms.Button' to type 'System.Windows.Forms.TextBox'.If I remove a button, it moves on to give me the same error but for a label..
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Nov 9, 2009
I have given reference to Microsoft HTML in COM (am using VB 2008)
"Unable to cast object of type 'System.Windows.Forms.HtmlElement' to type 'mshtml.IHTMLElement'."
I want to retrieve all the properties like the class name, html id of every object in the web browser. I am getting the above exception when i try to direct cast it.[code]...
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Jun 25, 2010
My project worked a first and now its giving me a problem.The error
Quote:
Unable to cast object of type 'System.Windows.Forms.MouseEventArgs' to type 'System.ComponentModel.RunWorkerCompletedEventArgs'.
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May 16, 2011
[URL]The issue is as soon as I change the value of the text boxes it gives me an error and forces me to close the project.
The error is:Unable to cast object of type 'System.EventArgs' to type 'System.Windows.Forms.KeyPressEventArgs'.
However I'm supposed to clear the number of gallons used and the total charged when a change is made to the contents of the 2 text boxes on the form.
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Jun 12, 2011
Unable to cast object of type 'System.String' to type 'System.Windows.Forms.TextBox'.
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Mar 31, 2011
same errors or something related to System.windows.forms. Unable to cast object of type 'Public_Information_System_Remake.PIS' to type 'System.Windows.Forms.TextBox'.
[Code]...
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Feb 9, 2012
Private
Sub cmdExit_Click(ByVal
sender As System.Object,
ByVal e
[code]....
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Jun 27, 2011
VB 2008, DataGridView,DataGridView1_CellLeave(sender, New System.EventArgs)
"Unable to cast object of type 'System.EventArgs' to type 'System.Windows.Forms.DataGridViewCellEventArgs'."
What is the Correct String for "New System.EventsArgs"
Anybody there is to help me out.
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Feb 7, 2010
I am working on moving applications from Windows 2000 to new server Windows 2003 R2(64 Bit). I noticed that there are some VB programs and config files for those programs have been placed in Windows 2000 Registry. Some other applications are using them from different servers.Why do we use registry here? How can i move these to registry in windows 2003? Can I just move these or do I have to write VB programs to place them in 2003 registry?
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