I have bound TextBoxes. When I edit anything, I have to move to the next or previous record before calling the Update Method for that record to be updated. With my DGV, I use
vb
Me.dgvSalvageListing.EndEdit()
and it will update as expected. So, how would I do something similar to my Simple Controls?
vb
Private Sub UpdateDb()
Try
' Write changes back to db
[code]....
I am trying to follow an example. I'm getting the following errors:
1. PartNum is not a member of 'Vantage2.OMSDataContext.
2. Name 'Where' is not declared.
3. Method arguments must be enclosed in parenthesis.
4. Name 'p' is not declared.
5. Comma, ')', or a valid expression continuation expected.
For reference, the link is here: [URL]
I have followed with my code as follows...
Class Window1
Private db As New OMSDataContext
Private View As BindingListCollectionView
Private Sub Window1_Loaded(ByVal sender As Object, ByVal e As System.Windows.RoutedEventArgs) Handles Me.Loaded
[Code] .....
In WinForms, I do a databinding between controls and properties of a Business Object :
txtNote.DataBindings.Add("Text", oZones, "Note") Note is a property of the BO oZones. It is OK. Now I have an array as properties in the BO oZones. In the following sample, this array is IndemType().
[Code]...
i am Working vb.net08 and Access Database.Present i am working in Databinding controls on the form.My Problem is whn i change the data in the Combobox then the Corresponding data should be change in all controls which i binded is not comming.Only one time it binding the values to all controls, that is also at first time if i click on the Dropdown.If i change or select second value , then the other control values are not changing why? i coded in "Dropdown" and "SelectedIndexChanged" events as below: Plz tell me where i did mistake My Code is as Below:
Private Sub cmbEventname_DropDown(ByVal sender As Object, ByVal e As System.EventArgs) Handles cmbEventname.DropDown
Dim strSQL As String = "SELECT Distinct EventName FROM tblEventsHeld"
Dim da As New OleDbDataAdapter(strSQL, cn)
Dim ds As DataSet = New DataSet
[Code]...
I am missing something simple. I know how to bind asp.net datagrids and webforms, but this is my first time trying to bind to an object list of T in a windows form. (I am use to using datasets with datatables and im trying to get away from doing that).I have a simple object list that gets populated on the form load. However if I click a button to add a dummy record the datagridview does not display the new record added. The bindingNavigator (if clicked nextrecord) and "debug stops" all show that the new record I just added to the object list is there.
Even adding the datasource object in the watch list shows the new records are there. They are just not displaying.
I cannot seem to figure out as to why the new record is not being displayed in the datagridview when I can see the record got clearly added to the datasource.
[Code]...
i have this database format in SQL:
ID name add num
1 fel mn 201
2 john kaye 23
3 Kate mani 25
I used databinding to call the values on (SQL) to textboxes in visual studio 2010 and i have this code in NEXT command:
Inter is the name of the databinding
With inter1
If .Position = .Count - 1 Then
[code]....
The code above display the information not on Random. How can i display those information in Random mode? And i need a msgbox when all the data has been already seen by the user. I mean no redundant data will be seen by the user upon random mode has been done.
I have a custom control with a bindable property:-
Private _Value As Object
<Bindable(True), ... > _
Public Property Value() As Object
Get
[code]....
Also, here, I'm adding a handler to the DataBindings.CollectionChanged event.This is the second place that I retrieve the type:-
Private Sub DataBindings_CollectionChanged(ByVal sender As Object, ByVal e As System.ComponentModel.CollectionChangeEventArgs)
If e.Action = CollectionChangeAction.Add Then
Dim b As Binding = DirectCast(e.Element, Binding)
[code]....
I need the first place, because the BindingContextChanged event is not fired until some time after InitializeComponent.The second place is needed if the binding field is programatically changed.Am I handling the correct events here, or is there a cleaner way to do it?
Note: My GetValueType method uses the CurrencyManager.GetItemProperties....etc, to retrieve the type.
i have a datagridview bounded to a bindingsource that's pointing to a datatable created at runtime. In the same form i have a Add New, Save and a Cancel Button,the Add new calls the addNew, the Save Calls the EndEdit and the cancel the CancelEdit. Now the problem, if i fill only some fileds in the new row and call the cancel edit, the row is deleted, but if i fill all fields and i call cancel edit nothing happens.What i want it's, when i press the cancel button even if i put values in all fields the row get deleted.
View 1 RepliesI want to create a calendar control to display employees vacation schedules for the year. It could be either monthly or scrolling weekly. It will draw its data from Access. I'm just looking for some general input on how some others might accomplish this. I know there are some paid options but my boss said I am on a $0 budget. A couple of ideas I had are:
1. Make a monthly view comprised of labels and textboxes for the actual dates. Populate the texboxes with a series of sql statements
2. Use a datagridview bound to a crosstab query, but I don't know how to have the datagridview show one week after the other.
Have experience with web scripting languages and SQL but am still getting used to VB.Currently using VS2008 to create a simple app in VB 2008 that uses a WebBrowser control. The user navigates to a web page, hits a button, and then every minute the web browser automatically refreshes, gets the page length, and alerts if the page length has changed by more than 100 chars.Unfortunately, I am noticing that VB uses the cached version of the page when it refreshes (I am using WebBrowser.Refresh, but have also tried using WebBrowser.Navigate(same page as before)). Is there any way that I can delete just that page in the cache without clearing the whole thing from my application before it reloads and calculates the new page length?
View 2 RepliesIn this example the IsEnabled property of my button is bound to the selected rows "Local" property of the grid and it works just fine:
<Button DockPanel.Dock="Bottom" Width="100" Height="100" IsEnabled="{Binding ElementName=dataGridRestore , Path=SelectedItem.Local}"></Button>
<my:DataGrid x:Name="dataGridRestore"
ItemsSource="{Binding}"
[Code]...
I have a table called Sort with columnds sortID and sortname. I'm displaying my results in a datalist. I also have a table called Colors with colorid, sortId and shade. On my display I am selecting the results from the Colors table. But for the
SortId column I just have a number. Each sortId already has a sortname in the database. How do I get it so that the display page displays the sortname rather than its corresponding sortId name. Here is what I have: Sincerely, Computergyrl
I have a dropdown list control which when a particular item is selected, another dropdown's list is populated based on that selection. The code behind is below.
Imports System.IO
Partial Class Data
Inherits System.Web.UI.Page
[code].....
I am creating an Extended DateTime picker. I have created a Class the inherits the Default DateTimePicker and Adds a new Property NullableValue. I have placed the control on a form and bound it to a Binding Source using the NullableValue Property. When I load the record the control updates as it should. But when I change the value and save it does not save back to the database.
[Code]...
I'm creating a composite user control and trying to exposing the controls as properties so that I can databind them from the form that I drop the user control onto. One of the controls I'm trying to expose is a combobox and I can't seem to figure out how to expose this combobox to the designer. I'm trying the following code that I've cobbled together from what bits of documentation I can find but so far no joy.
<Category("Data"), Bindable(True), _
Browsable(True), EditorBrowsable(EditorBrowsableState.Always), _
DesignerSerializationVisibility(DesignerSerializationVisibility.Visible), _
AttributeProvider(GetType(IListSource))> _
Public Property RollbackCombo As ComboBox
[Code] .....
<%If (Eval("NewPrice")) =0 Then%>
<% Session("OrigenalPrice") = True%>
<asp:Label ID="Pricelabel" runat="server" Text='<%# Eval("Price") %>' />
<%Else%>
[code].....
I have a detail form that get filled in by values from a table adapter. When the "endedit" is called as part of the update routine, one of the fields is changed for no known reason.
How can I find and look at the actual code that "endedit" uses?
Or how can I regenerate the code?
I have a DataGridView that loads an Access database when the application starts. I also have a bunch of text boxes that are bound to the same database. When you click on a row in the DataGridView the text boxes display the data for the record you clicked on.. perfect so far... now when I want to add a new record..
I do...
BindingSource.AddNew()
This removes all the data from the textboxes and I start typing away.
When im done I hit a Save button with the following code.
BindingSource.EndEdit()
It removes all the data from the text boxes but never saves to the database!
I set a radiobutton.value to true. when I go to save and perform bindingsource.endedit. radiobutton.value is then nothing. any ideas as to what could cause this?
View 1 Repliesradiobutton.value is nothing on bindingsource.endedit
View 11 RepliesI have data bound text boxes that loose the entered data in "BindingSource.EndEdit() code. This would seem to violate all forms of logic. I have provide my code below as well as a copy of the debug.print data.
Private Sub SaveToolStripButton_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles SaveToolStripButton.Click
Me.Validate()
ErrorTrap = 0
[Code] .....
From what I've read in the documentation, both of these methods roll the state of the datarow back to where it was the last time AcceptChanges was called. So what is the difference between them? Am I wrong about that?
View 4 RepliesI have a datagridview that completely updates anytime changes are made to it. It is not connected to a source but rather the datagrid is filled when first launched.
View 1 RepliesGetChanges() doesnt see changes made using beginEdit & endEdit?The data is bound is also bound to a DGV and when I edit there "manually" by entering cell and call GetChanges() it works correctly.
'Does RateType already exist in table?
For Each row In dsRates.dtValidLaneRates
_tableID = row.tableID
If row.RateType.Contains("Default Rate") And _
[code]....
I'm working with DevExpress GridLookUpEdit Control and I'm a bit stuck with it. Now I know you can't help a lot if you don't have access to it, but I'm trying to figure out why can't I do something like this with it:
GridLookupEdit1.DataBinding.Add("NullText", ds.Tables(0), "SomeField")It gives me an error, says it can't find NullText Property. This confuses me because NullText IS a property and I use it in my code to set the text inside the Editor.
I got a combobox that I populate with items by using databinding options which works fine, but what if I only want to only select the distinct items, was trying to do that but no avail so far. if I could do that just by using an sqladapter in code but is that what I should really do ?
View 2 Repliesrecommend a spreadsheet control other than the OWC webcomponents with very simple functionality? I just need a 2x100 matrix and the ability for user input. I need this for VB.NET and I need it to be compatible with both 32bit and 64bit systems.
View 1 RepliesI have an app that downloads from a networked SQL database to a dataset and also to an XML file on laptops. Laptop users will take their executable and the XML file which the local dataset will read.Although I can get gridviews etc to bind to that dataset syntax such as
"TextBox1.DataBindings.Add("Text", ds, "fname")"
I'm a novice who does not need installers yet and does not collaborate and I was hoping someone might be able to point me to a simple guide for incrementing versions and backing up the source files so that if I ever needed to I could get back to the previous versions. I just don't want to get into Visual Source Safe, Team Builder, or other big hairy version management software. Also my VB Express book only talks about using the ClickOnce solution which doesn't seem like it's a fit for my needs. I'm thinking I should be able to do a build manually incrementing the version and manually archiving files or folders to a certain location.
View 4 Repliescreate a simple control. The control have 1 label and 2 panels with images. The control needs to be clicked, the problem is i can create the click action for the control, i can only use internal click events. how to use it out of the control.
View 5 Replies
