Grid Selection Changed Event
Jul 15, 2009
i have 4-5 forms and contains grid and some coding is done on selectionchanged event of grid. eveything is working fine but one of the form has this problem.as soon as i call the form form1.show and it fires the selectionchanged of grid before even it fire form load event. i'm not sure why? i try to debugged it step by step, as soon as form.show command is done the control goes to selectionchage event of grid and at the same time it is working fine on rest of the forms.
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Mar 31, 2012
I have a Data grid with DatagridComboBoxColumn , and i want to Fire Event SelectionChanged when user Select any thing From the ComboBox , Do Some operations
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Jan 20, 2010
on my Form I have a DataViewGrid and some textboxes with a save button (they are filled with additional data of the selected row).Save is disabled first, when I change something in the textboxes the save button is enabled.When the user changes a gow in the grid, I want to ask before changing the grid row, if he wants to save (if the button is enabled).I am using RowEnter but this is too late, then the selected row already changed (and my textboxes already got new data)...What event can I use to ask if I should save stuff before the user changes a row?Something like BeforeRowChanging with a chance to cancel changing the row?
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Feb 27, 2009
I am trying have a data grid selection populate a form. I am new to this.Basically I have a connection persistance object and I would like to call that and call a stored procedure with the value of the selection. The datagrid is bound to an object.
[Code]...
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Aug 25, 2010
Ive got a datagridview, which the user can put in to 'edit' mode by double clicking. If they then make changes but click to another row, I want to msg asking if they are sure they want to discard then changes. If they say No I want to stop the selection change from being made.
Private Sub DataGridView1_SelectionChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DataGridView1.SelectionChanged
If edit = True Then
[Code].....
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Dec 8, 2011
I have a datagrid that has a checkbox column and it all works fine and dandy except I'm not sure what the proper way to handle this situation is. When I check one or more checkboxes then loop through to find which ones were checked if I didnt move the selected cell before clicking go it will not detect the last checkbox checked. However if I change selection it does. Problem is I dont want to change selection, I tried unsBelow is the code I'm using to find which checkbox is checked. This will msgbox me the text in the second column of all the rows checked except the last one I checked
For
Each
chk_s In
[code]....
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Jan 31, 2012
i am using asp.net for my web application when i click on checkbox inside gridview and after that i check its value on button click it does not show me the exact value.here is asp code
<asp:GridView ID="dgvMenu" runat="server" Width="100%" CssClass="grid" GridLines="None"
AutoGenerateColumns="False">
<Columns>[code].........
and here is its vb version to get its value on button click version
For Each item As GridViewRow In dgvMenu.Rows
Dim MenuName As String = item.Cells.Item(1).Text
Dim chkView As CheckBox = DirectCast(item.FindControl("View"), CheckBox)
Next
i want to check its value whether its checked or unchecked so that i can process its value
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Mar 10, 2009
I am writing a program to search computer in the same network.I just get an result array like
[10.10.10.111, 10.10.10.112, ...]
I want to show the result ip addresses in something like the data grid view but I have no sql database.I want to show the result as rows. User can click on any of the rows to "Select" the IP for other processing.
IP
---
10.10.10.111 <-- this can be selected
10.10.10.112
...
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May 1, 2009
I need to update a link Table with the data I select from multiple grids, the problem is only the last command statement takes effect, therefore I am only updating the link table from the last command statement, is there a way to update the link table with all the command statements?
Dim ConnectionString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=|DataDirectory|aop29.mdb"
Dim objConnection As New OleDb.OleDbConnection(ConnectionString)
[Code].....
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Feb 18, 2011
Moved from Microsoft Developer Network
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Windows Debugging
[Code].....
MS has a patch for the OnListChanged event handler issue, even though it seems we have to pay to have access to it. This fix specifically addresses an error message when you press ESC to cancel adding a new row in .NET 2.0: [URL]
FIX: Error message when you try to press ESC to cancel adding a new row to a DataGridView control in the .NET Framework 2.0: "An unhandled exception of type 'System.InvalidOperationException' occurred in System.Windows.Forms.dll"
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Sep 16, 2006
When we left click a grid cell, or list item, it highlights. Left click outside it and the selection jumps to the new place.
I can RIGHT click anywhere in the grid without disturbing an existing highlight, but I want it to work more like windows explorer would in terms of file selection..
i.e. if I right click inside the range, the range stays, if I right click outside the range, the range moves to a new single cell that I just right flicked.
Try it now on this page. Select some text, right click on the selection and it stays. Right click outside the selection and it goes. In datagrid (for example), the selection can only be modified with a left click.
How can we change this so the selection behaviour of a datagrid/list is more like this text pane?
On a related note. If I left click in a textbox I can drag a selection out. If i wanted to right click and drag the selection out, would it be the same process? (It's for a custom string manipulation picker control..)
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Sep 1, 2009
I would like to know how to select multiple records from a gridview, (ie checkboxes in itemtemplate) and process SQL statements on the records. So in short, its basically selecting records from a grid view by ticking the check boxes, and clicking a process button which then proceeds to execute the SQL statements corresponding to the records selected.[URL]..
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Aug 6, 2009
Is there a way I can add an event for when a value is changed, because, I need to add an OnDisconnected() event that detects when the mobjlistener.Connected value has changed...would I have to do a timer, is there a way I can do an event for getting disonnected?
mobjClient = New TcpClient("IP", 5000)
I would rather not add a timer, I would rather have an event that fires when mobjlistener.Connected changes, but if I can't I will go ahead and use the timer instead.The problem I have that I need to detect when this changes is because sometimes I get disconnected for an unknown reason using the TCP Multi-User Chat, it has handlers for disconnected, but whatever is causing the disconnect, it is just not detecting it, so if I could make it so that it will trigger when this is changed, then I can stop the problem I have once and for all.
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Apr 29, 2009
I'm working on a Windows Service that watches a few folders for changes, creations, and deletions. It all works well with the exception of one watcher that watches a single file (XML File with Configuration Settings) for minor changes.
I tried taking the Windows Service code and putting it into a simple windows application with start/stop buttons for the filesystem watchers and stepped through it. It never detects the file change of the XML config file. The changes are indeed occurring and the "Date Modified" of the file is updating.
XmlEventReferences = New System.IO.FileSystemWatcher()
XmlEventReferences.Path = "C:XmlReferences"
XmlEventReferences.Filter = "*.xml"
[Code].....
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Jan 6, 2012
If a window, for e.g. Firefox, changes its title, from Firefox to Stack Overflow - Firefox then I want my app to record that Firefox changed its title.Is this possible without the use of a hook and loop (EnumWindows)? If can be only done with a hook, which type of hook?
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Apr 2, 2010
I've been searching all over and I'm either not searching for the right words or it just doesn't exist. I've got a datagridview (dgv) on a form with some textboxes that are databound to different fields in the dgv's datasource. I want to capture an event if someone changes a value through one of the databound controls so I can mark the row as modified. I've been going through the dgv events trying to capture something, but I can't find anything that fires when a value is changed. The dgv is read only, so the values can only be changed through the databount textboxes.
How to I know if someone changes a value in the dgv? Is there a setting in the dgv that will tell me if a row is modified?
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Mar 13, 2012
I have a DataGridView that uses a BindingSource to display my underlying DataTable. When the user makes a change to a row in the DataGridView the BindingSource's DataBindingComplete event fires. I'd like to get the DataTable's DataRow that caused this event. How do I do this?
The code below does not return the correct DataRow. For example, when I Fill my DataTable then change row 200 the Current property still equals 0, which always returns the first row in my DataTable.
Private Sub dgvCurrent_DataBindingComplete(ByVal sender As Object, ByVal e As DataGridViewBindingCompleteEventArgs) Handles dgvCurrent.DataBindingComplete
If e.ListChangedType = System.ComponentModel.ListChangedType.ItemChanged
[Code]....
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Jun 11, 2009
I have an number of text boxes and comboboxes on different forms. I have textchanged events which trigger a msgbox if the user enters invalid data(i.e. the number they enter is to big or to small). Is their a simple way to make the program not call the textchanged event when the form is loaded and the boxes get their initial value? Second is their a way to make the textchanged only be triggered when the user enters data not when the program clears the boxes?
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Jan 25, 2010
i have my form set to 50% of the working area of the Form's screen. I need to know when the screen's workingarea change and resize my form accordingly. Example: the user drags his windows taskbar and hence the workingarea reduces, and as such i wish to resize my form to 50% of the workingarea
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Jan 27, 2009
how to trigger a textchanged event. I want to enter data in one text box and have the rest of the data show up after i fill it in. For example I enter someones name and then 3 other text boxes fill in with his height weight and ect after i entered his name.
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Jan 3, 2010
How can I make an event that is raised when a variable or property is changed (or can I just put the code I would put in an event in the Set section of a property?
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Sep 27, 2010
I am having a problem catching the event that happens when a user selects a value from a combobox. What I was using was ValueMemberChanged, but because I am populating the combobox in code during runtime using SQL and a dataadapter and dataset, this also executes the ValueMemberChanged event, so that makes it difficult for me to know when the user actually changed the value.
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Jan 25, 2010
when the user clicks on the add button another form launches, which enables the user to add student info such as name, address, course, start date and end date, this information is then written to class when the ok button on that form is clicked, and then displays the data on the initial form in data grid. the user can add multiple entries and they are all displayed on the intial form and a the data grid is populatedwhen any of the rows in the displayed grid is selected, and the update button is clicked then the same form launches as the previous one and but this time its in the update mode and pre populates the form with the inital values.
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Jul 4, 2011
In my project, I am trying to make a button_click event occur when the text of one of my labels is changed.I am using the following code,
Code:
Private Sub Total_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Total.TextChanged
[code].....
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Jul 1, 2009
Here is my code for programming a program that reads from a file called RESORT.TXT
Containing the text:
Barb Allen
604 777 1234
[code].....
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Oct 31, 2011
Does anyone know how to make an event that will fire when the value from a label is changed? (In VB.NET)
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May 5, 2009
I datagridview and I populate it using a bindingsource. I have the following code in the bindingsources PositionChanged event and it works as I want it to except when I filter the bindingsource.
Private Sub ProductBindingSource_PositionChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles ProductBindingSource.PositionChanged
If (Me.ProductBindingSource.Current IsNot Nothing) Then
Dim dr As DataRow = CType(Me.ProductBindingSource.Current, DataRowView).Row
Dim ProductId As Long = CLng(dr.Item(2).ToString)
Dim ResultId As Integer = CInt(dr.Item(0).ToString)
GetReport2(ProductId, ResultId)
End If
End Sub
The scenario is when I click on a row in my datagridview the bindingsources positionchanged event fires and I load a crystal report. Problem is when I filter the bindingsource, even though the first item in the grid is now different the incorrect report is displayed because the bindingsources position hasn't changed.
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Aug 2, 2011
vb.net
Private Sub DataGridView1_CellValueChanged _
(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) _
Handles DataGridView1.CellValueChanged
[code]....
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Jun 12, 2012
I am trying to get my grid to refresh automatically when the underlying data is updated in the database. Isn't this supposed to work? Or am I missing something? I created a DataTable within my DataSet. Then I created a new form and added a DataGridView (actually I'm using DevExpress' XtraGrid but am trying to get it to work with just the Microsoft controls). I use the menu in the upper left of the grid to set the grid datasource to the datatable in the project data source. This then automatically adds the dataset, BindingSource, and TableAdapter to the form.
[Code]...
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Feb 22, 2011
I'm using a textbox to supply a filter for the datasouce which is bound to a listbox. It works (mostly) with a few exceptions, one being i was to restrict the height of the listbox to the number of entries (upto a maximum number), so a bit like a combobox (which in effect is what I'm writing). One of the problems is when the number of entries changes there does not seem to be an event raised, although the OnDrawItem is called for the items to be displayed (the displayed ones!) Is there anyway to find out (in a derived listbox) when the number of entries has changed in the datasource?
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