Focus Back If Cell Validation Fails?

Jul 12, 2009

do I focus back from a cell if its validation fails?With CellValidating event, if I set e.Cancel=True it prevents my cell from leaving.

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IDE :: Force The Cell Value To Be Blank And Focus Back On That Particular Cell And Try Again?

Jul 28, 2010

Datagridview . in cell validated handler and I have the column,row for the cell that I just checked on. If the cell contents are bad, I want to force the cell value to be blank and focus back on that particular cell and try again.The code i've tried simply moves to the next cell in the grid instead of staying where I want it to be. Surely there is a command to focus and put the 'cursor' back in a particular cell.Some sample code I'm working with:

"Invalid Job#, Correct or DIE!")
JLgrid.Item(0, Row).Value =


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VS 2008 Set Focus (new Currrent Cell) Setting Focus On Specific Cell In My Datagridview1

Nov 7, 2009

I am having problem setting focus on specific cell in my Datagridview1 . On Form1 when clicking on cell 3 in any row, I am callig a Dialog1. However, when done working with it, and closing the Dialog1, the focus returns to cell 3 in my Datagridview1 . I like to set the focus on the next cell(4) making it the current cell.

I have tryed :

DataGridView1.SelectionMode = DataGridViewSelectionMode.CellSelect
DataGridView1.CurrentCell = DataGridView1.Item(4, e.RowIndex)

DataGridView1.CurrentCell = DataGridView1.CurrentRow.Cells(4)

And few other things, I am always getting this exception: Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function.

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Datagrid New Row Cell Validation - Validate Empty Text And Indicate Error On Cell?

Jun 1, 2010

The problem is that if you never enter anything into a cell for a new row then that cell is never validated. This is a problem because I have columns that should not be null. I am doing the check in the row level validation and storing the information about which cells are empty that should not be empty. The row level validation works fine and the row level validation error indicator goes on,(red exclamation mark at the beginning of the row) but I also need a visual indicator on the individual cells that are in error.

I am thinking that setting the HasError property for the cells that are in error should cause them to display n error style (the default red border). Is there a way to this this either from XAML (perferably) or from code?Alternatively I could cause those cells to re-validate when the row editing is finished. Does anyone know how to do this?

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Make DataGridView TextBox Cell A ComboBox Cell When It Has Focus

Dec 23, 2011

I have a DataGridView with several columns. One column is a TextBox column named "Status". This column can only show one of three values: 'Final', 'Ready', or 'No Reportable'. I want to have some code that would turn the TextBox cell into a ComboBox cell when the user left-clicks on the cell to allow the user to choose one of these three options. When the user clicks elsewhere or the cell loses focus I want the cell to change back to a TextBox cell.

Here is what I have so far, but the code throws an exception indicated below Plus, I don't think the code would remove the combobox when the cell loses focus.

Exception: "Provided cell does not belong to this DataGridView control."

Private Sub dgvCalculatedResults_MouseDown(ByVal sender As Object, ByVal e As System.Windows.Forms.MouseEventArgs) Handles dgvCalculatedResults.MouseDown
Dim ht As DataGridView.HitTestInfo = Me.dgvCalculatedResults.HitTest(e.X, e.Y)


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Regex Email Address Validation Fails If Underscore Character Present

Aug 31, 2010

My Regex works, except if the email address entered has an underscore character (_) in it.

Because of my lack of experience with regular expressions, I'm not sure where in my pattern I'm supposed to add the offending character to allow it:

Dim pattern As String = "^[-a-zAZ0-9][-.a-zA-Z0-9]*@[-.a-zA-Z0-0]+(.[-.a-zA-Z0-0+)*." & _

He said he fixed it by adding the _ after the numeric check.

I see the A-Z0-9, but I'm not sure which is the numeric check...

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Forms :: Focus() Method Fails With Second Show Form?

Feb 7, 2010

I have a simple login field, which works fine with the exception of one quirk. The form is set up with the tab order to go to the UserID first and the Password text box second. This works fine when the form is used the first time, but when the form is used the second time the focus in placed in the Password field. If the form is used a third time, focus is moved the OK button, that is each time moves to the next tab order. I even tried to set the focus in the Load event as in Me.txtUserID.Focus(), but this doesn't change the behavior. Again, I should note that I close the form and not hide the form.

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If DDL Statement Fails Whole Transaction Is Rolled Back Sql Server?

Mar 24, 2009

I have a series of DML and DDL(Drop View only) statements that I need to execute under single transaction from app. I m using commandObj, and kept above all I kept beginTransaction statement. Everything is working fine expect when error is returned by Drop statement. If Drop statement returns error then whole transaction is rolledback. I do not want tthis. I want to continue even if Drop fails keeping the other DML statements that were executed before Drop.

View 5 Replies - Filehelpers ExcelStorage.ExtractRecords Fails When First Cell Is Empty

Sep 22, 2009

When the first cell of an excel sheet to import using ExcelStorage.ExtractRecords is empty, the process fail. Ie. If the data starts at col 1, row 2, if the cell (2,1) has an empty value, the method fails.

how to work-around this? I've tried adding a FieldNullValue attribute to the mapping class with no luck.

Here is a sample project that show the code with problems

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C# - Applying Date Validation To Excel Cell?

Jan 27, 2012

I am working on applying date validation to excel cell(range) from VB.NET.

Private Sub DateValidExcelRule(ByVal worksheet As SpreadsheetGear.IWorksheet, ByVal DateRange As String)
Dim dt As Date = CDate("1/1/1900")


When I enter 4 digits whole number 7777 it is validating correctly showing message Enter Valid Date, but when I enter 5 digits 77777 it is accepting the value and converting it to 12/10/2112 value and not showing any error message.

Here all I want to do is I want to validate the cell value to any date format mm/dd/yyyy.

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Setting Focus Back To Main Form?

Mar 19, 2010

This should be fairly basic but maybe the search terms are too general to find relevant answers.I have an MDI form with a conventional toolbar. When I open a small non child form I want to set focus back to this main form so the user can click the help button on the toolbar if necessary.

Tried frmMain.Select() and frmMain.ToolStripButton0.Select() at end of small form load but it doesn't work. The user has to click the help button twice, once to select it and once to open it. A minor problem but annoying.

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VS 2010 - Opening Process Then Back To Focus To App

Dec 17, 2010

I have Hotspot Shield and I want it to open the process, then back to focus to my application, and wait about 15 seconds and then kill the process. How do I do that

View 1 Replies (VB) Prevent Copy And Paste From Validation Cell In (Excel.Application)?

Jan 16, 2012

How should I generate an Excel File with this rule?Should not be able to paste an invalid value to a validated cell from other worksheet.

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Requery Form Value After Moving Focus Back From Form2?

Jan 6, 2011

I have Form1 based on Table1 with unique records per employee/position. Form1 is used to updated position dates/active status/add new position info for an employee. I have Form2 based on Table2 which has unique record per employee. On Form1, I have a combo box to select which employee's records to view in the detail section. If I select a record from the combo box, the detail displays any existing records from Table1 for that employee. If I need to add a new employee, a command button opens Form2 where new employee is added to Table2, and a new record is also inserted into Table1 with the employee name and ID. When I close Form2 and return focus to Form1, my combo box is refreshed to display the employee just added, however I can't get the detail to show the new, partial record from Table1 for the new employee. Form2 is a stand-alone (not a subform on Form1).I've tried hooking Requery to OnGotFocus, but that either doesn't work or isn't activated by returning focus via code. I've tried adding a text box to the detail that contains the unique EmployeeNum and setting the control source of the text box to cboEE.Column(1) (which is the EmployeeNum bound column). Am back to trying to do stuff in code after long absence and
now feel lost in all the variations I've tried.

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VS 2008 Tab Cell Focus?

Jun 23, 2009

I have a DGV1 and when clicking on cell, I am able to execute a code in: Sub Mouse_Click()

If DataGridView1.CurrentCells(4).Selected = True then
End If
End Sub

I like to do the same thing using Tab key when a cell in my DGV1 gets focus or the Tab enters a cell. Could someone show me which Sub I need to use.

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VS 2010 When Preview Pane Is Complete / Then Set Focus Back To Datagrid?

Nov 17, 2011

On the left half of my screen I have a datagridview. On the right half I have a document preview pane.As I change rows on the left half, I use the CurrentCellChanged event to open the document associated to that row in the previewer.This works fine, however, the focus is then placed in the preview pane which prevents the user from being able to use the arrow keys to step down a row at a time.To combat this, I made the final event in my CurrentCellChanged routine set the focus back to my datagridview. Unfortunately, even this doesn't always work because of what seems to be a timing issue.If the document to be previewed takes more than a fraction of a second to open, the code to move the focus to the datagridview is executed but after the image completes drawing, the focus is moved back to my previewer.I don't want to use a timer to force a delay and a DoEvents causes me some other issues.Is there some other event I can use to determine when my preview pane is complete and then and only then set the focus back to my datagrid?

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Set Focus In A Specific Cell Of A Datagridview

Oct 22, 2009

I am using a datagridview as an input device. I am using a subroutine to check for errors. When an error is found is there a way to set the focus to the specific cell in the datagridview where the erro has occurred?

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DataGridView - Focus On Cell That Was Right Clicked

Mar 26, 2010

I have a datagridview that I have put a ContextMenuStrip1 on. I would like it to remove a row in the datagridview when the row is right clicked on and they click on "delete row". I have the delete working and the menu is showing up but this isn't firing when you right click on the datagridview.

This is where I am setting the row to edit:
Private Sub ModifyRowToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ModifyRowToolStripMenuItem.Click
If Not datagridview_TagAssignment.CurrentRow Is Nothing Then
[Code] .....

I am always ending up on row(0) and never the row I right clicked on.
Private Sub datagridview_TagAssignment_CellMouseClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellMouseEventArgs) Handles datagridview_TagAssignment.CellMouseClick
If e.Button = Windows.Forms.MouseButtons.Right AndAlso e.RowIndex >= 0 Then
datagridview_TagAssignment.Rows(e.RowIndex).Selected = True
End If
End Sub

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Error When Set Focus To A Particular Cell In Datagridview?

Mar 22, 2011

I have a custom datagridview. I have to set focus to the cell(0,0) of that datagridview when it got focus.I have tryed the following code:

Me.CustomDataGridView1.CurrentCell = Me.CustomDataGridView1(0,0)

in the GotFocus event of that datagridview.But when i run and try to enter some text in a cell, then press the DOWN button to go to the next cell but there is a NullReferenceException.

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Focus On A Highlighted Cell In A Datagridview?

May 20, 2009

I can Highlight the row in a datagridview. If I don't scroll down a few hundred rows. I will not see it highlighted. How can I automatically scroll to the highlighted row?[code]...

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Prevent A Datagridview Cell From Getting Focus?

Jan 3, 2010

vs 2005 sql 2005 developer/I have a datagridview with 4 columns .I want the user to be able to use the arrow keys to move through the rows and just two of the columns.I want the other two rows to behave like a label that cannot get the focus. Nor be selected.I have been messing arround with the "cell enter" event but the language wont let me set the selected cell from within that routine.

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PropertyGrid, RefreshPropertiesAttribute Cell Focus?

Aug 18, 2009

Within my PropertyGrid I have decorated a class with the following attributes:

[Category("Category 1"),
DisplayName("Part Number"),
Dim PN1 as String


The problem is that when PN2 is changed in the PropertyGrid, it causes a refresh of all cells. Since both properties have the same DisplayName, but different Categories, the focus is set to PN1 and not PN2 after PN2 is edited.

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Removing Focus From Cell In Datagridview?

Dec 5, 2009

Is there any way to remove the focus from the current cell after edit when I click the row header? I have tried various methods; repainting the row, cell, moving focus to other cell but the caret still remains in that cell.

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Set Focus To A Cell In Datagridview On Certain Condition?

Jun 19, 2009

i have 5 columns in a datagridview

when i enter 0 and press enter in the 1st column then i want focus(select) to the 4th cell of that row otherwise i want to focus the next cell.

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Setting Focus In A DataGridView's Cell?

Mar 16, 2010

I am trying to set the focus in a datagridview's cell after the user enters some data and tries to tab out of the cell. I can't seem to get the focus in the cell they just edited. I can change the background color, but the focus goes to the next field in the grid. I am trying to do this in the _CellValidating event. Here is my code :

Private Sub dgvFish_CellValidating(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellValidatingEventArgs) Handles dgvFish.CellValidating


The function CheckSampleNumber() takes the value of the cell just entered, and checks to see if it has been entered either in the current grid, OR in the database.

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Setting Focus In Particular Cell Of A Datagrid?

Feb 27, 2009

Setting Focus in particular cell of a datagrid

I have two datagrids in my form. I want to set focus to the particular cell of that datagrid. Result of one datagrid is to be displayed in the other one.

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Setting The Focus To A Particular Cell In Datagridview?

Mar 11, 2009

I am having trouble setting the focus to a particular cell in datagridview.

I have a timetable and on initialisation of the program, it compares the time in the datagridview with the current time. If the time has passed, the row is displayed in grey, if not then it is shown in black. I then want to scroll through the datagridview to focus on the first black line.

Here is the

Private Sub DataGridView1_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting


"An unhandled exception of type 'System.StackOverflowException' occurred in mscorlib.dll" with the note about infinite recursion.

What have I done wrong and how do I scroll through to automatically set the focus?

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VS 2010 Focus Cell On New Row In Datagridview?

Feb 15, 2012

Is it possible to put the focus on a certain cell on the new row in a datagradview.

So when I add the row I can inmediately start typing?

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VS 2008 Datagridview, Fill One Cell Set Focus To Another?

Nov 17, 2009

I have a bound DataGridView where the user should enter an item number in one cell, the name of this item will be displayed in the next cell, and depending upon variables of this item number, the focus should be set to the correct cell on the same row.

My problem is that I can not seem to get the focus to the correct cell.

My code so far. I am having problems with the marked line:

Private Sub dgvOrdreregistrering_CellEndEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles dgvOrdreregistrering.CellEndEdit


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Restrict Users From Setting Focus To A Specific Cell In .net?

Jun 16, 2011

restrict users from setting focus to a specific datagridview cell in

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