Is There A Record Change Event
Jun 9, 2011
I am trying to calculate the 'Profit' field based on the current record's 'ProjectTotalBillingEstimate' field and the 'ProjectActualCost' field. I want the 'Profit' text field to be calculated every time a record is changed, either via the navigation toolbar or the Project ID drop down box. I tried performing the calculation everytime the 'Product ID' changed but then the values in the fields of the previous record were used. I was wondering if there was an event that I could use the would occur only after the entire contents of a record were loaded.Essentially what I need to happen is when one moves to another project record the profit field needs to be calculated only after all the fields update to the current record. [code]
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May 27, 2011
Visual Studio Pro 2010 Win 7 64 bit running bootstrapped to a MacBook Pro i5 (blasphemer!!!) works really well though!!New to vb.net, have used vb6 for several years and finding the transition interesting to say the least.I have an access database with a vb.net front end all auto bound by the connection and binding wizards (I know, I know...) Not too complicated, but a simple 2 table related db. On the form the parent table shows customer details with the child table related and displayed by datagrid. I have a field in the child table for images and I have figured out how to store and retrieve images to the db. I am using the datagrid.rowheadermouseclick event to reload the picturebox on the main form as I click down the child table datagrid. Now I need to be able to click the bindingnavigator, go to the next record and have the program reload the image for the next child record. The problem is I'm trying to use an event from either the datagrid or bindingnavigator to reload the picturebox in the child table after moving to the next record, but all of the events I am trying are firing before the next record is moved to and therefor the logic I'm using to retrieve the image from the db is not working.
Anyone with an idea on how to move to the next record and then run my logic to populate the picturebox? What events might I use that fire after the next record has been populated? I know this is probably not that hard, but I have been racking my brain all day now.
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May 11, 2011
I'm receiving the following error:"You cannot add or change a record because a related record is required in table 'FORN_NIB'."
I cannot understand this error fr the related record really existe on the FORN_NIB table. It is even picked up from there. Here's the code where the error occurs at the .Update instruction:
HTML With rst
.Open("DADOS_RECIBOS", conn, ADODB.CursorTypeEnum.adOpenDynamic, ADODB.LockTypeEnum.adLockOptimistic)
.AddNew()
.Fields("NUM_FORN").Value = Me.TextBox1.Text
[Code]...
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Jul 21, 2010
Im tring to implement some generic logging in the entityframework 4.0 using theSavingChanges event in the entity contextI want to record details about any create/ update and deleted records including the id of the record being changed (which is always an int identity field). During the update and delete processes I can get the id for the record using
Dim AddedItems = Statemanager.GetObjectStateEntries(EntityState.Added)
For Each entry As ObjectStateEntry In DirectCast(sender, ObjectContext).ObjectStateManager.GetObjectStateEntries(EntityState.Added)
[code]....
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Jan 23, 2011
How to display record in gridview using pageload event in vb.net ?
i wanna use two SqlDatasource1 and sqldatasource 2 to display record in single gridview1
SqlDatasource1 will display all records from tabel where as SqlDatasource will be used to display particuar record search in table 1 but how to do this ?
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Jul 6, 2009
when i insert data in to datagrid the position always in first column of first record.
how i can change the position to the last record(last row).
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Jul 2, 2009
[quote] I Want To Take Record From a Listview to TextBox on a Form on DoubleClick Event
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Nov 10, 2011
I have a control thread that starts up a secondary thread and when the secondary thread finishes, the control thread restarts the secondary thread. On this secondary thread, I use a stopwatch to record a thread.sleep event. Is there any reason, under any circumstance, why the stopwatch elapsed millisecond value (499) would be 1ms less than the sleep time (500 ms)This doesn't happen all the time or even a lot, I'm just curious if there is any physical reason for this to happen.
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May 8, 2009
what is the formula for button click event (go to new record On a form in VB)i have a form with a button and when clicked i wish to go to a new record (add new Record)I have a table which i created. and from that table, i created a form. and on the form i put a button.I want this button to open up a new form, so i can put another record in the same table?
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May 26, 2011
i have this code to open a record and this working if there is any, but if no records it will come out with error
[Code]...
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Apr 18, 2009
I hav a web service which pull records from a database and I am hosting these services in IIS which works fine but I am trying to retrieve the record and display the record in a listbox displaying the time field as the text for that record.I have created the following function
public sub get_data()
dim dt as new data.dataTable
dim service as ws webservice.webservice
[code]...
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May 17, 2012
The coding will works if the data type of my primary key is integer.but when i try to change the primary key in string data type i cant delete oe edit. below is my coding for that 2 button that is working.[code]..
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Aug 9, 2010
I am trying to check a record in database before inerting a new record here is my code but problem is when i enter a names first alphabet it imediatly populate massage. i want to check it after entering whole name
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Try
Dim cnString As String = "Provider=Microsoft.Jet.OLEDB.4.0; Data Source=" &
[CODE]...
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Jul 1, 2011
The following code was working the other day. Now it isn't. When I type a character in the textbox the event doesn't fire.
[Code]...
why the event would just stop firing?
I'm trying to make it so this the cursor will jump to the next textbox after the user enters 1 character.
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Jun 21, 2010
I am having a requirement in my project where User press '.' in his num pad and he wants the character ',' to be displayed (dats bcoz he is French User).
I tried changing the e.KeyCode but it is a readonly property.
Is there any other way to change the key in key events?
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Apr 1, 2011
let say i have a function like this
' create filter
Dim colorFilter As New ColorFiltering()
' configure the filter
[code]....
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Oct 13, 2011
I have a dgv with several DataGridViewComboBoxColumns and when the user selects an item from one of these (product dropdown), i need it to repopulate another combobox (color dropdown) in the dgv for that same row - based on the value i get from the product dropdown. I've tried using the EditingControlShowing event; however, it only fires when I first select the dropdown .....?
Is this the right event I should be using? My other issue is that I don't know how to have the color dropdown re-populate for just the column and row I've selected. Here's my code so far for this event:
Private Sub DataGridView1_EditingControlShowing(ByVal sender As Object, ByVal e As DataGridViewEditingControlShowingEventArgs) Handles DataGridView1.EditingControlShowing
Dim myRowIndex As Integer = 0
[code]....
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Sep 25, 2010
I can't figure out how to make it so that when a variable reaches a certain value, an event is triggered. For example if I wanted a user's level to change to 2 when he gets 1000 exp.
Dim level as integer
Dim exp as integer
*****What do I put here?*****(when exp reaches 1000)
level = 2
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Jun 8, 2010
in vb.net , event are automatically change for example i write following code for button1 click event
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
ListBox2.Items.Add(TextBox2.Text)
End Sub
next day i open this project. and double click on button4 to write some other statement but there are two click events for button1 Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)ListBox2.Items.Add(TextBox2.Text) End Sub
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button4.Click
[Code]...
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Jan 10, 2012
I have been working very hard on figuring this out and just can't understand the events. understand the event process in my code? Or tell me why my image won't switch when it runs the code?
Declarations of Class and members
Partial Public Class Name
Implements IChat
[Code].....
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Mar 15, 2012
I have a CollectionChanged Handler Method:
Private Sub LayersChanged(sender As Object, e As Collections.Specialized.NotifyCollectionChangedEventArgs)
If e.ItemCollectionHasNewItems IsNot Nothing Then
[Code]....
I cant call SomethingRelatedToE.excecute because it effects e's collection which causes a runtime error.
However if the LayersChanged method has completed I can then call SomethingRelatedToE.execute from another method without effecting it.
Is there a way for me to directly move to another method after the LayersChanged method has finished, like a Goto function or another solution to this?
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Jan 12, 2010
Is there any way so I can get event when moving cursor in excel sheet. What I meant by that if cursor is in cell A1 then I move to B1 at that time I want cell change event should fire. At the movement I am able to get event when you change the cell value and press enter then I can get the cell change event.
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Dec 23, 2011
I have created a form to update an access DB table. My issue is that when the text in the text boxes is changed and the form is submitted, the .text values stay the same as they were when the datareader loaded them on the page load event. How can I submit the values that the user updates, not what is already there from page load.[code]...
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Oct 9, 2010
I hhave two modes in my application. Either of the mode is on at any part of time during the running of the application. I have given the user the option to create PicutreBoxes at runtime. Further, I have give two different options to the user.
If the first mode is selected, the Click event for the PictureBox is is pb_clikc and if the second mode is selected, the click event is pb_click_sp.
But the problem is that on the mode select event, I can't specify this line of code since picb is not existing in the current context.
picb.Click += picb_click for Mode1
or
picb.Click += picb_click for Mode2
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Feb 11, 2012
i want to execute different subs at each tick , is that possible ?
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Apr 10, 2010
I'm using the PanelManager control, but I can't figure out how to change the panels via a client event.I have a Link label and when clicked, i want it to the panel manager to change to another panel.
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Sep 30, 2009
i have line like this 1.0 30 Blue (2 17.00 54.0) [2 16.03 52.0] 55611 30275 58571 23514 so i want to check after the Value Blue is that "(" or "[" in side my radio button checked change event.
in RadioButton1_CheckedChanged if the value is "( " the message box should come out and say "The file is already in PPin to Probe pattern" else if the value is "[" then there will be nothing to display.
this is my code Private Sub RadioButton1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RadioButton1.CheckedChanged Dim FileContents() As String = IO.File.ReadAllLines("C:\match1.txt")
[Code]...
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Jul 26, 2011
I am working on a app that will monitor the registry for changes to [ProviderOrder] in [SYSTEMCurrentControlSetControlNetworkProviderOrder].
I have it 90% done with this
Imports System.Management
Imports Microsoft.Win32
Module Module1
Dim Watcher As ManagementEventWatcher
Dim Hive As RegistryKey = Registry.LocalMachine
[Code] .....
If I change [ProviderOrder.test] the app tells me the value was changed and corrects it. But it does the correction twice (because of UpdateProviderOrder changing the value). I thought that using RemoveHandler and AddHandler would take of that.
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Apr 12, 2011
I've got a variable, BuildDateTimeStamp, would it be possible to add a pre build event to update the value of this variable?code]...
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Sep 8, 2011
I handle the validation in the CellValidating event, and if the cell is invalid display an error message, then cancel the exit of edit mode. However I would also like to erase the content of the cell currently in edit mode.
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