I've got a small problem that is nagging at me right now. I'm implementing a DataGridView to DataGridView drag and drop opperation. Here is the line that starts the Drag and Drop opperation:
dgvSource.DoDragDrop(New DataObject(dgvSource.SelectedRows.GetType.ToString, _
dgvSource.SelectedRows))
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
If e.KeyChar = Chr(13) Then
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Preview Access SQL COMException 'm fairly new to VB.NET and I'm having difficulties performing a basic Access SQL statement.I'm trying to delete content the contents from the table but it keeps erroring out on me.
View 2 RepliesI'm trying to loop through and insert data into an excel template i have created. It works the first time, always the first time and never again after. All the values are correct and should work, I dont understand why it wont. Here is my code, there is an '>' beside the line that throws an error.
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When I used the following code:[code]the workbook opens but I get the following error - Invalid index. (Exception from HRESULT: 0x8002000B (DISP_E_BADINDEX))
View 1 RepliesI'm working on an app that writes to excel. The following piece f code is working properly ( it fills the requested cell) but generating a run time exception that I can't get rid of.
[Code]...
I am trying to save an object (Class1) as string in a cell value. My issue is that from time to time I have a ComException:HRESULT: 0x8007000E (E_OUTOFMEMORY)(It is kind of random but I have not identified any particular pattern yet) when I write the value into a cell. Any ideas will be welcome
For illustration purposes:
Let Class1 be the class to be converted to an Xml string. (Notice that I removed the xml declaration at the start of the string to avoid having the preamble present- non printable
[code]....
I use the following code to access a VSS item:
Dim sItem As String = "$/MyVssProject/InexistentFile.txt"
Dim oItem As SourceSafeTypeLib.VSSItem = Nothing
Try
[Code]....
The problem I face is when I try to get an instance to a file that doesn't exist in the VSSDB, thus leading to a COMException, which basically wouldn't be of a problem (I would expect). In fact the exception occurs, but instead of proceeding with the catch code, the debug cursor stays on the line "oItem = m_oSourceSafe.VSSItem(sItem)", showing a dialog with title "COMException crossed a native/managed boundary.
From here the execution doesn't proceed, until I change the content of sItem to an existing file.
Why does the exception not get caught, and how can I achieve it?
Environment: VS2010 with .Net 2.0 on WinXP SP3 x86
I have done quite a bit of research on this issue and haven't came up with anything definitive yet. I am having issues with Excel randomly getting ComExceptions while writing out reports. I am using a Visual Basic 2005 (framework 2.0) console application to create these reports. The problem has been difficult to figure out because it occurs in random places while writing out reports so I can't catch the error to see the problem. I have looked through the differing items that it breaks on and there is nothing odd about them that would cause any of these problems.
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I have a problem with a Com Object. The object open a file for each instance and when the files open reach 20, the program raise a ComException saying that there are too many files open. I'd changed the config.sys and the config.nt to Files=120 but the exception still is raised.
View 1 RepliesI am just trying to run an application on another machine than I created it and I get this error - COMException (0x80040154). I think it needs more files, but I copied the source, where could I find the other files necessary for it? [Code]
View 5 RepliesI have a component that I have built that includes a webbrowser control. I don't know if that is important, so I mention it anyway.
When I put the control into my form everything is fine,however, when I debug the application I get the following cryptic message:
COMException crossed a native/managed boundary
Error HRESULT_FAIL has been returned from a call to a COM component.
Private m_MouseOverListBox As Boolean = False
I'm getting a COMException was unhandled (class not registered) error on this line of
VB.NET
ADOXcatalog.Create("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & Application.StartupPath & "/clubs/" & txtClubName.Text & "/data.adf;Jet OLEDB:Database Password=password")
This is the imports and references i have:
VB.NET
Option Explicit On
Option Strict On
Imports System.IO
Imports System
[code]....
Along with Microsoft ActiveX Data objects library 6.0 and Microsfot ADO Ext 6.0 for DLL and Security. It was all working fine, and I moved my entire project folder across from one PC to another. Both windows 7, and had no external references.
Basically I am trying to check for the file's existence, if not, open a template file and do a save as to a file name?However, I am stuck with the error in the title of this post at the openning of the template file line "oBook = oExcel.Workbooks.Open("X:dataOTEMPLATE.xlsx"). Below are some relavent lines in my code:
If File.Exists(str_filetemplate) Then ' Check for template file before moving on
oExcel = CreateObject("Excel.Application")
If File.Exists(str_fileoutput) Then ' The output file already exist, do what I need to do
[code]....
I'm trying to confirm if an Excel worksheet exists. However, doing so results in a COMException error.
For i = 0 To myWorkBook.Worksheets.Count
If myWorkBook.Worksheets.Item(i).name = "NewSheet" Then
iNewSheetCount += 1
End If
[code]....
I am trying to read text from an image. I have been trying to use OCR from MODI but I keep getting an error. Here is the simplest version of code (I've tried several)
Dim miDoc As MODI.Document
miDoc = New MODI.Document
miDoc.Create("C:document1.bmp")
miDoc.OCR()
miDoc = Nothing
As far as I can tell, my program gets stuck every time it gets to:
miDoc = New MODI.Document
it tells me a COMException was unhandled
I am using vb in vb.net, and I have a reference to the COM "Microsoft Office Document Imaging 12.0 Type Library". Every thing I have tried seems to come up with the same error.
I install this application done by MS VisualBasic2008 when i install this application on other
desktop, they pop out this error when i run the program, wheareas when i install in my own
workstation and run the program it can open up the program.
how to solve this problem?[CODE...]
I can't seem to find a thing on what this exception code indicates on Google or MSDN, and it's occurring intermittently and without a pattern I can discern.The failure seems to occur on the final line here:
Dim olApp As New Outlook.Application
Dim olNS As Outlook.NameSpace = olApp.GetNamespace("MAPI")
Dim olMail As Outlook.MailItem = olApp.CreateItem(Outlook.OlItemType.olMailItem)
When I run the following code, I get the exception below:
''# NOTE: ExcelApp is a Private main form variable
Dim ReportBooks As Excel.Workbooks = ExcelApp.Workbooks
Dim ReportBook As Excel.Workbook = ReportBooks.Open(localFilename)
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My Windows Forms app collects data from user input and mathematical calculation and outputs a set of results to an Excel spreadsheet.
Here's my code (for convenience, I've included only the code that seems relevant to the problem):
Dim exc As New Excel.Application
Dim book As Excel.Workbook
Dim sheet As Excel.Worksheet
[Code]....
[Code]...
I have put the exe which is in bin folder to my client place. I have installed .net framework there. and some forms are working fine. But I 'm getting above error for some forms. it has specially status bar, flexgird. I have copied the AxInterop.MSFlexGridLib.dll and Interop.MSFlexGridLib.dll file in to the same place where the exe is.
In my VB.net Winforms application I'm using the ITaskbarList3::SetOverlayIcon interface to set status overlays on the application's taskbar button (under Windows 7). This all seems to work fine for me, with the icons being shown and removed correctly.From the form load event, one of my functions makes the callSetOverlayIcon(parentForm.Handle, IntPtr.Zero, String.Empty)(where parentForm is the form which the load event has fired for) which very occasionally (on other people's machines) throws the following exception:
System.Runtime.InteropServices.COMException (0x8007057A): Invalid cursor handle. (Exception from HRESULT: 0x8007057A)
at MyNamespace.TaskbarNotify.ITaskbarList3.SetOverlayIcon(IntPtr hwnd, IntPtr hIcon,
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I am a *** programmer and cannot make sense of the error message I'm getting. I wrote a program and it runs fine on my development machine and also on other machines with Visual Studio installed. However, when I run it on any other machines, I get the message below.All of my other programs that I write run fine on these other machines; so I know this problem must be due to some control that's unique to this new program. But I can't make much sense of the error report
View 6 RepliesWhy does SetOverlayIcon throw an 'Invalid cursor handle' COMException occasionally
View 1 RepliesIn previous versions of VB, you could drag or move the form to a convenient spot on the IDE. With 2010 express, the form is in the upper left hand corner and will not move. The toolbox essentially hides it.I have not been able to find a setting that changes this condition.
View 2 RepliesNET 2008 to write a windows application. I try to connect to my ACCESS database and run the
program, the immediate window prompted me with this error message. May I know what went wrong in my
codings?[code...]
I cannot get the dragdrop event to fire when I drag a file from one tabpage to another tab page in the same tabcontrol. I can drag a file from my application and drop into windows explorer and and then drag from windows explorer into my app. That all works fine. And when I drag from one tabpage up to the top of the control, my program uses the tabcontrols dragover event to swap tabs....works fine also. ...Drag drop event fires...no problems
Say I have a list box with files on one tabpage, a list box with files from a different directory on another tabpage, I want to be able to drag the file over and drop it into the other listbox.I have done lots of testing on the variables in the dragdrop handlers to see if they are recognizing the switch in controls and they are. But the dragdrop event will not fire.
Im working on 'Virtual iPod Touch' project and I'm almost done..but one thing annoying me..im using drag 'n' drop to make lock slider..1 got 1 picturebox with lock arrow and 1 black (transparent/invisible) with allowed dropping...and its all ok but I want only I can slide (move mouse) in area for sliding (see a picture, but I think all of you understand).
View 12 Repliesthe user has the option of dragging several pictureboxes around the form. when he lets go of the mouse, the picturebox will take on a new position on the form.
i would like to implement the following:
on mouseup, if the picturebox position is within some amount maybe 50 or 100 (i dont know what units VB.net) uses, i would like it to be dropped exactly in a defined position. sort of like if you play checkers on yahoo games, you dont have to place the piece exactly on the square only approximately.
Been a while since i've bothered you gentlemen with my questions, but im back! So, I want to know, how I would be able to drag a picturebox around a form, liek a drag and drop functionality, but I dont want to move folders. Just move it around the form.
View 4 Replies