I have a combo box that on valuechanged event, a yes/no msgbox pops up asking the user if they want to save changes. but if they click no, i want to change the value of the combobox back to its original value. but the problem is that the valuechanged event fires twice. is there anyway to keep the event from firing?
View 10 RepliesI have a form containing 135 NumericUpDown controls (15 rows x 9 colums).I also have a Button control (btnCalc) that performs calculations per each row.btnCalc.enable=False for the most part and I only want it to be enabled if the value of any of the NumericUpDown controls change - i.e., to prompt user to recalculate.what is the best way to program this w/out having to code a "ValueChanged event" for each of the 135 controls?
View 4 RepliesIt looks like there is a bug in the DateTimePicker control, because I don't find any event specific for the changing the check state of the checkbox, only the ValueChanged event seems available. So that event should trigger every time the date in a dtp is changed manualy, or by choosing a date from the calender or when the checkbox in the dtp is checked or unchecked by clicking on it, the event ValueChanged should be triggered. But it doesn't do that all the time.
[Code]...
I add a date picker as follows
Friend WithEvents dtpReportDate As System.Windows.Forms.DateTimePicker
The default date picker has left arrow and right arrow which allow you to browser previous month and following month. I add a handler to date picker valuechanged event:
AddHandler dtpReportDate.ValueChanged, AddressOf dtpReportDateChanged
Private Sub dtpReportDateChanged(ByVal sender As Object, ByVal e As System.EventArgs)
'do something here
End Sub
The problem is that whenever I click left arrow or right arrow to change month, the dptReportDateChanged is triggered. I do not want this happens. All I want is that after I find a month, I double click date to trigger the event.
I have created a custom control with an event called "valuechanged" When I try the following line to: AddHandler
ScheduleMain1.ValueChanged,
New
System.EventHandler(AddressOf[code]......
I am using VB.NET together with ADO.NET to create a program. I have set my TableAdapters as needed and bound the correct tables-columns to my comboboxes.My problem though is this:My combobox2 item is bound to a datatable. The table adapter's Fill method (the select command basicaly) includes a public variable in the where clause to fetch the correct results. I ll put some code here to clarify it a bit more.Public Class Frm_inv
[Code]...
I am trying to clone some of my Controls, with their EventHandlers. I have a function to retrieve the Delegate of a specific EventHandler.The hard part is to find the correct naming to use.
This is the function I'm using
Private Function GetEventDelegate(ByVal ctrl As Control, ByVal eventname As String) As [Delegate]
[Code]......
I am trying to clone some of my Controls, with their EventHandlers. I have a function to retrieve the Delegate of a specific EventHandler.The hard part is to find the correct naming to use.
This is the function I'm using
Private Function GetEventDelegate(ByVal ctrl As Control, ByVal eventname As String) As [Delegate]
[code]......
I have a load sub with a few declarations isorry for thn it as so: [code] But when the TimeFrom_dtp.ValueChanged code is executed, the Time From_dtp.Value isn't correct as it hasn't been set yet. If I change it round so the TimeTo_dtp.Value is set first then that doesn't work because the TimeFrom_dtp hasn't been set yet? How can I get it so that the ValueChanged code isn't triggered until I've set all the values of my datetimepickers?
View 5 RepliesI'm having a silly problem. Upon loading a form, I'm trying to change the value of a NumericUpDown. The form is being declared as following as a class-level private variable:
[Code]....
Using VB.Net, I have a DataGridView with a ComboBox Column. What even do I use for when the user changes a selection in the ComboBox?
View 4 RepliesI'm using VB 2008. I'm looking for a way to take the value of the combobox after the user selects the right one. The combobox is databound and in List mode allowing selection of only the items in the box. I allow autocomplete by setting:
AutoCompleteMode = SuggestAppend
AutoCompleteSource=ListItems
So the user can key in the right value and the value narrows down each time. The user can press enter or just click somewhere else to select the value. I need a way to display the value of the combo after the selection is made but not each time a user presses an additional key to narrow down the selection.
I am using VB 2010 express edition, using windows form, i set my access database using the database connection wizard, and then use a combobox and bind it to the database using the properties windows, while other fields of database (set in textbox form), i drag it to my form. Running it, the values of textboxes are correct when i changed the value of my combobox. I want to use these values in textbox in drawing circle, whenever i change the value of combobox, the circle will also change using the combobox selectedIndexchanged event, my problem is, the value in textbox does not update in order to draw the circle, i have to use lostfocus or leave event to correct it. I make also a combobox and textbox not using this Ado.net(correct me if im wrong), it is working using the selectedindexchanged event only, what seems be my problem,
View 1 RepliesI have a ComboBox that contain ProductIDs and a DataGridView that lists Categories which a product can be a member of. My DataGridView list ALL categories, however, it has a checkbox column that get checked when the ProductID is a member of that Category, otherwise it is unchecked. A user may also check or uncheck a category checkbox then save.
The problem is, if a user forgot to save before changing the ComboBox, then his changes on the previous ProductID is gone How can I give the user a chance to either save or ignore the changes done on the previous ProductID (before selecting a new ProductID)?I searched the internet for an answer and I found the following code but it is in C# and I am not sure if it solves the problem or not!
[Code]...
We Could Easily Called A Functions By Pressing Enter In keypress Event. On textbox in vb.net. Eg.:-
If e.KeyChar = Microsoft.VisualBasic.ChrW(13) Then
Call Fsn()
End If
But. I can not called the functions on ComboBox. IN similar fashion. please help me to called a Funtion when we press ENTER IN ComboBox.
how can i track keypress in keypress event of a combobox i try this:
[Code]...
I am working on the Combobox.I was bind the data from Access database to Combobox in the DropDown Event.Now whn i click the Dropdown for selecting value , for one click the dropdown list is not showing. Some System is coming within few milliseconds it went out for second click the list is coming.This happens only whn i click the combobox first time in the form.After second time onwards the dropdown list coming properly.
View 2 RepliesI 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.
View 3 RepliesATM I'm trying to color individual items on my combobox. While reading stuff I googled, it seems that the only way to do this is through the DrawItem event.My question is, will the draw item be 'called' when i assign text to the combo box? combobox.text = "string"
View 18 RepliesI have some validation set on my combobox and it works as it should, but the problem I have is that the user is unable to click on the exit button, or click on the X to close the form until they have entered a valid field - would it be possible to exclude these controls from the validation? So the user can click on exit, or click on the X?
My coding is:
Private Sub Combobox1_Leave(sender As Object, e As System.EventArgs) Handles Combobox1.Leave
If Not Combobox1.Items.Contains(Combobox1.Text) Then
[CODE]...
So basically I have a ComboBox on a form, which I populated by adding custom object named "Category" and by setting the DisplayMember to the property "Name" of my object.On another form that can be opened at the same time, I can edit the name of theses "Category" objects. I raise an Event, "NameChanged" but how can I catch it on the form which contains the ComboBox? Even if the property "Name" of the object "Category" change, the display on the ComboBox doesn't autoupdate. So I need to catch the event, but I don't know how to do it.
View 1 RepliesI have a DataGridView with two columns. One is DataGridViewComboBoxColumn and other is DataGridViewButtonColumn. To capture the button click from the DataGridViewButtonColumn, i have written the CellClick event and it is working fine. However, this is not making my selection from the DataGridViewComboBoxColumn 'smooth'. What i mean is that i have to click on the combo-box twice for it to show the drop-down list. I have noticed that at every click, CellClick is fired. But only after the second click the drop-down pops out. What is the work-around for this?
View 1 RepliesI'm having an issue with getting the errorprovider to work in a database application where I have put the error provider logic in a partial class and have a combobox value change.Either I set the bindings so that it works but any navigation in the binding navigator then updates the value of that combobox on every next previous etc or it never fires until the save. So there is no way to change the errorprovider setcolumnerror string to something new with out saving on every navigation move. After changing the selection in the combobox the row does shows dirty (rowstatus) so there is databinding but it doesn't fire the ColumnChanged event like textbox and other controls. Is there a way to keep all this in the business logic in a partial class?
Partial Class reportexecDataSet
Partial Class fuellogDataTable
Private Sub fuellogDataTable_ColumnChanged(ByVal sender As Object, ByVal e As
[code].....
I am using VB 2008 Express to connect to an Access 2007 database. I have a combo box called SelectYearMonth that is populated by the database. When I used the Access report VBA, I used the AfterUpdate() event to calculate a sum. I need to know how to do the same operation in VB 2008 Express using the SelectedIndexChanged event of the combo box.
When I made a report in Access using VBA I coded my calculation as:
Me.ExactReprintTextbox = DSum("Pages", "HBELP_FINAL_Q", "YEARMONTH = " & [SelectYearMonth] & " AND JOBTYPE = 'E'")
While this works great with Access VBA, this syntax does not work in VB 2008 Express. How do I code this in VB 2008 Express?
I need to calculate the sum of all "Pages" of a particular "JOBTYPE" in the Access database for the YEARMONTH selected in the combobox. I have a query in Access called "JobTypeExact_Query" that contains all the pages of that particular JOBTYPE that I need. What I need to do is limit the calculation results to the YEARMONTH selected in the combobox.
I have a combobox that has a text portion that is clearing for unknown reasons and the TextChanged event is not firing.
View 9 RepliesI have a datagridview which has a column formatted combobox type. Now I want to determine when I click to these comboboxs, My program will show a msgbox.
View 4 Replieswhat i was wondering, is how to open a combobox from a button click event .let's say i have a combobox and a button, and when i click that button, the combobox should act like it does when you click on the combobox dropdown arrow.
View 2 RepliesI have problem with my combobox and suggest list poping up. Im taking data from datatable then i start to type and list is poping up if i select item form that list by moving arrows up and down and then press TAB than all is working ok but if I select item by clicking mouse then the item I choose doesn't show text but empty field.
View 9 RepliesI know the answer to this is out there somewhere, but my Google isn't being much help on this one. I am trying to make my combobox run an event when the enter key is pressed. Here is my code.
Private Sub CmbQuery_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles CmbQuery.KeyPress
If e.KeyChar = Chr(13) Then
SearchEvent()
End If
End Sub
Can we stop the SelectedIndexChanged Event of combobox at runtime? bcoz when i go to last record my sencond combo is refreshed & It will show 1st Item. but i want to see related item with 1st combo.In the database records are stored with related item.but on frontend..
Amother question is, I want to work with Datagridcombobox. My datagrid contains 3 comboboxes. When i clicked on 1st ,2nd combo should be filled. Same like 2nd third. How can we handle the event of DatagridCombobox??