How To Handle Data Error Event In Vb.net
resources Windows Server 2012 resources Programs MSDN subscriptions Overview Benefits Administrators Students Microsoft Imagine Microsoft Student Partners ISV Startups TechRewards Events Community Magazine Forums Blogs Channel 9 Documentation APIs and reference Dev centers Retired content Samples We’re sorry. The content you requested has been removed. You’ll be auto redirected in 1 second. System.Windows.Forms DataGridView Class DataGridView Events DataGridView Events DataError Event DataError Event DataError Event AllowUserToAddRowsChanged Event AllowUserToDeleteRowsChanged Event AllowUserToOrderColumnsChanged Event AllowUserToResizeColumnsChanged Event AllowUserToResizeRowsChanged Event AlternatingRowsDefaultCellStyleChanged Event AutoGenerateColumnsChanged Event AutoSizeColumnModeChanged Event AutoSizeColumnsModeChanged Event AutoSizeRowsModeChanged Event BackColorChanged Event BackgroundColorChanged Event BackgroundImageChanged Event BackgroundImageLayoutChanged Event BorderStyleChanged Event CancelRowEdit Event CellBeginEdit Event CellBorderStyleChanged Event CellClick Event CellContentClick Event CellContentDoubleClick Event CellContextMenuStripChanged Event CellContextMenuStripNeeded Event CellDoubleClick Event CellEndEdit Event CellEnter Event CellErrorTextChanged Event CellErrorTextNeeded Event CellFormatting Event CellLeave Event CellMouseClick Event CellMouseDoubleClick Event CellMouseDown Event CellMouseEnter Event CellMouseLeave Event CellMouseMove Event CellMouseUp Event CellPainting Event CellParsing Event CellStateChanged Event CellStyleChanged Event CellStyleContentChanged Event CellToolTipTextChanged Event CellToolTipTextNeeded Event CellValidated Event CellValidating Event CellValueChanged Event CellValueNeeded Event CellValuePushed Event ColumnAdded Event ColumnContextMenuStripChanged Event ColumnDataPropertyNameChanged Event ColumnDefaultCellStyleChanged Event Co
datagridview If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. Results 1 to 3 of 3 Thread: How do I handle a DataError event with datagridview Tweet Thread Tools Show Printable Version Subscribe to this Thread… Display Linear Mode Switch to Hybrid Mode Switch to Threaded Mode May 18th, 2009,12:55 PM #1 j-aero View Profile View Forum Posts Thread Starter https://msdn.microsoft.com/en-us/library/system.windows.forms.datagridview.dataerror(v=vs.110).aspx New Member Join Date Mar 2009 Location Baltimore Posts 14 How do I handle a DataError event with datagridview I got help with this last week. Apparently I cannot Unresolve a post. I have a datagridview control with a combo box. The user loads data from a file into the control. If there are errors (the element in the combo box column is not in the combo box list) I http://www.vbforums.com/showthread.php?569748-How-do-I-handle-a-DataError-event-with-datagridview would like to: 1. capture the row in which the error occurred, and store it in code/memory 2. change the cell backround to red (this is not that important) 3. continue without a message at the time of the error 4. post a message with all of the errors after the load is complete I am using the code staight out of the Microsoft example to try to figure how to do this, but it is not posting any messages when I load bad data, so I am not getting any smarter from the example. Code: Private Sub DataGridView1_DataError(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewDataErrorEventArgs) _ Handles DataGridView1.DataError 'MessageBox.Show("Error: " & e.Context.ToString()) If (e.Context = DataGridViewDataErrorContexts.Commit) _ Then MessageBox.Show("Commit error") End If If (e.Context = DataGridViewDataErrorContexts.CurrentCellChange) Then MessageBox.Show("Cell change") End If If (e.Context = DataGridViewDataErrorContexts.Parsing) Then MessageBox.Show("parsing error") End If If (e.Context = DataGridViewDataErrorContexts.LeaveControl) Then MessageBox.Show("leave control error") End If If (TypeOf (e.Exception) Is ConstraintException) Then Dim view As DataGridView = CType(sender, DataGridView) view.Rows(e.RowIndex).ErrorText = "an error" view.Rows(e.RowIndex).Cells(e.ColumnIndex) _ .ErrorText = "an error" MsgBox("error") e.ThrowException = False End If End Sub Reply With Quote May 18th, 2009,07:55 PM #2 jmcilhinney View Profile View Forum Posts Visit Homepage .NUT Join Date May 2005 Location Sydney, Australia Po
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more http://stackoverflow.com/questions/20105386/datagridview-dataerror-event-what-triggers-it about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack http://www.codeproject.com/Articles/18814/A-method-that-provides-how-to-handle-events-when-m Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up DataGridView DataError event…what triggers it up vote 0 down vote favorite how to 1 So I have a DGV that users are entering data in. The data should be numeric but I realize that blanks and alphabetic characters need to be handled. I haven't put in any CellValidating or CellFormatting events so I wanted t handle this via DGV's Data Error handler. I put the following code in my DGV, but iut doesn't seem to fire properly. I get error text when how to handle running in Debug but it's the very technical "Syste,.Format Exception..." text, and I don't want users to see that. I'd rahter they get the message boxes in my DataError event handler. private void grd1_DataError(object sender, DataGridViewDataErrorEventArgs anError) { MessageBox.Show("Error happened " + anError.Context.ToString()); if (anError.Context == DataGridViewDataErrorContexts.Commit) { MessageBox.Show("Commit error"); } if (anError.Context == DataGridViewDataErrorContexts.CurrentCellChange) { MessageBox.Show("Cell change"); } if (anError.Context == DataGridViewDataErrorContexts.Parsing) { MessageBox.Show("parsing error"); } if (anError.Context == DataGridViewDataErrorContexts.LeaveControl) { MessageBox.Show("leave control error"); } if ((anError.Exception) is ConstraintException) { DataGridView grd1 = (DataGridView)sender; grd1.Rows[anError.RowIndex].ErrorText = "an error"; grd1.Rows[anError.RowIndex].Cells[anError.ColumnIndex].ErrorText = "an error"; anError.ThrowException = false; } } So why isn't my DataError Event handler triggering on the error? Do I need to put in code that forces it to trigger (I had thought it triggered automatically on error)? c# datagridview share|improve this question asked Nov 20 '13 at 19:40 Ryan Ward 2933716 are you sure the DataError event handler is attached OK? You should also try finding out the error to see if you can avoid it another way, DataError is just the last way for you to suppress the error and provide some message. –King King Nov 20 '13 at 19:49 Is it proper technique to try using
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