DataGridView - Requested Clipboard Operation Did Not Succeed
Jan 18, 2010
I have a datagridview on a form which is populated with data from our backend database. A few of my users are experiencing a problem when they select all the cells in the datagridview and try to copy and paste the contents into something such as Excel.
The error is: Requested Clipboard operation did not succeed.
Having searched for information on this error it appears that if a process has the clipboard already open (such as office) this will cause the exception being thrown (which is a system.runtime.interopservices.externalexception), usually when the code calls the clipboard.settext method (which I do not). However my form and its code does not even contain anything to do with clipboard manipulation, copy and paste or anything remotely to do with using the clipboard so I am unsure as how I can actually catch this exception and just report back to the user?
I don't see why this doesn't work. I have gone into the registry and removed the registry key below and still no joy. The error arises at the For Each Loop.
I am unable to read a pasted datagridviewrow object from the clipboard. All I want to do is, when a user has the entire row selected and copied, I would paste that row into the clipboard as a DataObject. That works just fine but when I attempt to read that DataObject (after the user clicks Paste) the DataGridViewRow that's saved in the clipboard always has a value of Nothing. Here's the code I'm using for Copy and Paste.
I've written a VB.NET program for a client that stores all of its data in XML files. I use the XMLReader to read the data into a dataset. When I run the sub to encrypt the XML file, I'll get the following message: Error: mscorlib: The requested operation cannot be performed on a file with a user-mapped section open.
It doesn't happen all the time, so I know it does work. But on occassion, I'll get this message. I've been all over the forums and I've tried everything I've read to try and stop this error.
I close the reader object and set it equal to Nothing. I've even tried using DoEvents to make sure the object finished closing before running the Encrypt sub. Nothing has helped.
I develop on a x32 PC. It works fine on the development machine. But then, when the client runs it on a x64 PC, he gets these errors. Could the x64 system really be running so fast that the .Close() and the = Nothing and evern the .DoEvents() can't keep up?
i am trying to get data from the clipboard into dataset and view it on a datagridview using the code below. The problem is that every line after the first line starts with a character (like a small rectangle) but when i run a sperate loop to view each character i do not find any unexpected asc code.
'this is the text in the clipboard this is a test to get
I'd like to ask if anyone knows how to properly use the clipboard to take information from a rich text box and send it to the clipboard. You see, if I try the following, which is pulling text from a rich text box, named RichTextBox2:
I have created a DB connection, loaded my data grid and am looking to perform accumulation on the salaries that are shown. However it won't give me access to my grid view or the table for the Row.
This is the code that I have. The loop and the accumulator is at the bottom.
If rdoFullTime.Checked = True Then 'Dim con As OleDbConnection = New OleDbConnection("Provider=Microsoft.jet.oledb.4.0;data3
[Code]....
I tried to dim the Row as myDA.Row and myDataSet.Row and it won't allow me to and I can't figure out why. I know this deals with database but the problem is the logic not the database.
I have a solution with two projects. The main project connects to the second project via a reference, and the reference path is local to my machine. It looks like it references the .exe file.So when I publish the main project (ClickOnce), i get the following error: Application validation did not succeed. Unable to continue.In the log file, under Error Details, it says
System.Deployment.Application.InvalidDeploymentException (RefDefValidation) - Reference in the manifest does not match the identity of the download assembly Project2.exe - Source: System.Deployment
How can I include this second project? Should I publish it, then reference the published files? What do i reference? The .application file?Is there a way to just include this second project, so when I do publish the main project, the second one just goes along with it?
currently i am working on a project in which i am using datagridview control. if I enter key value in cell than remaining data of that particular row fetch automatically from data base. how? how to delete as row in datagridview? how to update a row in datagridview?
I have a datagrid with a lot of column, but only a few group of it can be edited by user.On a CellEndEdit event i update automatically the database with the new value when the user modify one cell and then I must recharge the dataset of the dataview.If I modify a cell and then use tab or enter to move to the next one everithing is ok, but if I change a cell and then mouse_click on another one i get thi error when i recharge the dataset:
Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function
I am installing an app I built in VB, and am getting the error "Application validation did not succeed. Unable to continue." I have successfully built and installed this app previously. What I think caused the issue is I attached the .mdf file I have referenced in my application to my SQL Server. I then detached the database in SQL Server, opened my VB app and re-built the app. When I tried to install the app, I received the error. Attached are the details of the error message.
how I can Encrypt the data that is requested/sent? I wrote an application that connects to MySQL to INSERT/UPDATE/READ information from/to. The application also connects to a website of mine. I have obfuscated the codes so that people can not simply de-compile it to see my information. However I, or anyone, can simple use Wireshark or Fiddler to see information like...
How can I encrypt that so i can at least feel a bit safer... the attacker can also use replay attack on my website until they get into a user's account...
When I installed Visual basic 2008 express edition it seemed to work, but when i was going to make a project it pups up a error box and it says: Regestry it not allowed.
I have a text file that has thousands upon thousands of URL's in it. I wrote a program to go to each of these links in succession (via For loops, obviously) and to grab a piece of information from them.Now to the problem. When I get to about 2300 or so, I get the error "COMException was unhandled by user code. The requested resource is in use. (Exception from HRESULT: 0x800700AA)" at the line "WebBrowser1.navigate(linkstocheck(i))"
I set linkstocheck = all lines of the text file. I get the same error even when I get the link directly from the lines of the text file. Does anyone know how I might go around this? Maybe catch the exception, wait half a second, then continue where it got the error?
I am testing an application. In tableadapter configuration wizard, On server side:While choosing data source, I chose Microsoft SQL Server Database File.This gave the connection string as:[code]Now I want to use the same application on Client side (off course databse is stored in Data Directory of my application in Server Side) Now in tableadapter wizard, I choose Microsoft SQL Server Express.Is that correct?I have done all configurations for remote connection etc. and also done the firewall settings.When I run this test on client side, it returns error:Cannot open database "Database1.mdf" requested by the login. The login failed. Login failed for user 'MYHOMESERVERKh. Furqn'.Why does it go to Kh. Furqan while I am giving it SQLExpress, where the DB is attached. My server is MyHomeServerSQLExpress and connection is MyHomeServerKh. Furqan (Authentication is Windows Authentication, and no password for it)
I am using a MasterPage with a dynamic menu bar across the page. If the user has requested a redirect back to the login (home) page, I don't want to log them out but I do want to hide the menu bar. Currently I am using whether the user is authenticated to control if the menu bar is visible or not.Basically, I want to always hide the menu bar when on the login page.The menu is rendered prior to the page itself so I need to be able to read the redirect request to see if the login page is the destination.
I am writing an application in Visual Basic .NET requiring Registry access.Whenever I try to read from the registry, I receive the following error message:"Requested registry access is not allowed"
Here is the thing! Always when I start VB express 2008/2010 and press "Create New Project" It only gives me back this:Requested registry access is not allowed. How should I solve this problem? Please contact me as soon as possible With the best regards: Kasper Lehtinen, Finland
I have created a web service with VB .NET 2005 that is connecting to a DB2 database through a third party ODBC driver of DataDirect and simply adds a row to the table.The service is working properly.Because I had to move the service to a server and the DataDirect driver that I have works only for client use, I needed to change the ODBC and use the DB2 Connect ODBC driver for the cause.
When ever I try to create a new project, any project using VS2008 B2 running on Vista I get this error. "Requested Registry Access is not allowed." Obvious registry thing bu t would rather not get into and mess with any hives
