VS 2008 DataBindings.DefaultDataSourceUpdateMode?
Aug 4, 2009
I want all binded controls in a form or a user control have the Data Source Update Mode to OnPropertyChanged (by default they are in OnValidation).I can do that for each control in designer mode and in the DataBindings, under Advanced, change the Data Source Update Mode to OnPropertyChanged but I want to do that once for all controls.
All my controls are in a big user control, so I put before InitializeComponent() :
Me.DataBindings.DefaultDataSourceUpdateMode = DataSourceUpdateMode.OnPropertyChanged
It is not good, my controls are still in OnValidation mode (instead I force the
[code].....
View 2 Replies
ADVERTISEMENT
Apr 6, 2009
I have been developing a database management program which is quite simple so far, with navigational controls, ability to delete record, datagrid, etc.
It uses databound textboxes, but when I modify the content of them it does not update the database. Same applies when I add a new record and fill in the textboxes. What do I need to do?
View 1 Replies
Feb 22, 2012
I wanna know a thing.I wanna know how to move into the different regs of the form (using databindings), just focusing the ID textbox and selecting ALT + => to go to right, ALT + <= to go to left, ALT + UPbutton to go to next and ALT + DOWNbutton to go behind.
View 2 Replies
Jan 16, 2009
I am porting a college project made in VB6 to VB.NET, which I am quite new to. I'm finding data bindings a little more frustrating than the ADO controls VB6 had. Here is an example of RecordCount being used in the old code, from the login screen:
Private Sub cmdLogon_Click()
If txtID.Text = "" And txtPassword.Text = "" Then
View 3 Replies
Jun 29, 2010
I have a form that has several controls, most of them are textboxs. All controls are binded to a bindingsource. The controls that always have values, they are displayed correctly, but the others ones that have null values in the data source, the default null value doesn't show up. This problem it's driving me crazy... There must be something that i'm missing. Some of the code that i had used with no luck:
[Code]...
View 6 Replies
Feb 19, 2010
can i use an inverse notation in the databindings to enabled or disabled one checkbox?I have a form that has several controls binded, and if i have true in one field in the database i need to check checkbox and disabled it.Something like:
vb.net
chk.DataBindings.Add("checked", bs, "MyDBFieldBool")
chk.DataBindings.Add("enabled", bs, "MyDBFieldBool")
This can be done directly?
View 7 Replies
Jan 8, 2009
I used to use ADODC with VB6. Once I've set up databindings I can set a text box or other controls to link with a database's specific field by changing the Text property under Data > DataBindings. I want to change the field the text box links to at different times using code. How can I do this?
View 13 Replies
Mar 11, 2010
I'm trying to create DataBindings to textbox and combobox controls on my form. Here is my code so far:
Private Sub SetBindingSources(ByVal strClientID As String)
Try
'This section of code populates the grdAddresses DataGridView
strSQL = "SELECT B.addrDesc, A.addr1, A.addr2, A.addr3, A.city, A.stateCD, A.zipCode, A.phone, A.fax "
[code]....
The highlighted line of code is returning the error message (see screenshot below). The part that I'm not sure what to code is the "dt1.addr1".
View 13 Replies
Mar 16, 2009
I'm try to making a text box showing a date, this what i've done
[code]...
View 1 Replies
Jun 23, 2010
I'm having some problems with a data bound datagridview.My current scenario is the following..The itemSetup has tree properties {ItemNo, CompNo, LocNo}(compno locno are not required)I have a datagridview with a datasource list of itemSetup And this has two comboxes cboCompany that is bound to a list of company the selected value is bound to compno. cboLocation that is bound to a list of locations the selected value is bound to locno the location class requires the compno to create the list of location the problem I run in o is that the when the compno is Nothing the cboCompany throw a datagridview_ dataerror when the form is loaded en when a item is added it looks like the binding of the combox runs later then the value is set.
View 4 Replies
Apr 6, 2009
(I used to use VB6.) I have been developing a database management program which is quite simple so far, with navigational controls, ability to delete record, datagrid, etc.
It uses databound textboxes, but when I modify the content of them it does not update the database. Same applies when I add a new record and fill in the textboxes.
View 1 Replies
Nov 11, 2010
I'm having trouble using DataBindings in a Windows Form / User Control. For example: Create a windows form, place a single text-box on it & place two buttons on it. The code behind the form is:
Imports System.ComponentModel
Public Class Form1
Implements System.ComponentModel.INotifyPropertyChanged
Public Event PropertyChanged(ByVal sender As Object, ByVal e As System.ComponentModel.PropertyChangedEventArgs) Implements System.ComponentModel.INotifyPropertyChanged.PropertyChanged
[Code] .....
If you type something into the text box & press Button1, you'll get a message box with the text of the property in it. If, however, you press Button2 (which sets the property in code) and then press Button1 again, you'll see that while the property was indeed set in the code, the text box doesn't reflect the change.
Updated the code to provide the implementation of INotifyPropertyChanged. This now works as desired.
View 1 Replies
Jun 2, 2010
I have a form with many different textboxes on it. The form is used to Edit the data already in a databound table. At design time I set my Databindings.text to the appropriate columns.
During form load I check the values in the bound column for null values. If the column value is null, I set the textbox.text property to a descriptive prompt like "enter telephone #" or enter city. I also use databinding.remove to remove the databinding so that the desriptive prompts don't wind up in the database.
Here is the code I use to remove the databinding.
For Each Panels In Me.Controls
PBox = TryCast(Panels, Panel)
[CODE]...
.Tag2Defaultphase is a custom property I have defined which holds the default descriptive prompt. If the user enter a value into the textbox I then wish to add the bind back so that when I updateall with the tableadapter the value will be transferred back to the appropriate bound column.
Here is my code for that:
Sub perOptionalTBoxValidation(ByRef TBControl As custTextBoxControl, ByRef strDefaultTextPhrase As String, ByRef intMaxChars As Int32, ByRef bsBindingSource As BindingSource, ByRef strColumnName As String)
[CODE]...
View 4 Replies
Mar 6, 2012
I have several controls in a winform application that I added databindings to using code.
Dim tblWrapper As ObliqueQCAndSpliceTool.TableWrapper = New ObliqueQCAndSpliceTool.TableWrapper(tbl, idField.Name)
tblWrapper.UseCVDomains = True
[code].....
View 1 Replies
Dec 10, 2011
I am doing a project for a course that involves a database, i have it set up already so that i can have two different labels displaying data from two different fields in a table when the form loads, but i am trying to get it so that when i click an option in a listbox it will change the displayed information. I am using the following code to set it when the form loads:[code]
View 2 Replies
Sep 24, 2010
I am sharing databinding when opening a detail form a summary form. The data is shared fine. What I don't know is how to save any data that may have changed, or to create a new record.[code]...
View 2 Replies
Mar 1, 2011
I am trying to add to a binding using Control.DataBindings.Add(). The issue that I am having is that the data member name has a period and space in it("Foo. Bar"). When I try to add the binding I pass in the string "Foo. Bar" as one of the arguments and I get an exception "CAnnot find datamember "Foo.".Is there a syntax that I need to use to pass the datamember name in when it has a period in it? I tried adding "[]" around the name but no dice.
View 3 Replies
Jan 18, 2010
What are the pros and cons of using the checkboxes checked property vs the CheckState property for databinding?
View 1 Replies
Aug 27, 2009
I can't seem to figure out how to use databindings to enable/disable a button when a listbox contains 0/1+ items?
Button1.DataBindings.Add("Enabled", ListBox1, "Items.Count")
Button1.DataBindings.Add("Enabled", ListBox1.Items, "Count")
Result = ArgumentException: Cannot bind to the property or column Count on the DataSource. Parameter name: dataMember
Button1.DataBindings.Add("Enabled", TextBox1, "Text.Length") ' This works?
View 2 Replies
Feb 28, 2011
I have some textboxes bound to a bindingsource and bindingnavigator.
I want to detect when the values have changed and prompt the users to confrim if they want to update.
When the form is first initalised and when then binding navigator moves to the next record the text_changed event fires on textbox where I have a boolean to determine if things have changed.
Is there a way to set my boolean only when valid data changes have occured or a better way to detect if things have changed
View 1 Replies
Apr 15, 2011
I'm calling the following method from a button click event to export a datatable to excel. After the export is completed, the excel application object is quit, released and assigned to nothing. But in reality it's not getting released and stays active unless the entire application is closed. So every time the button is clicked for export, a new excel application object keeps on running. The problem doesn't occur if two of the lines from the method below are not used. But I can't omit them as they are really needed. Check the * marked lines.
Code:
''' <summary>
''' Exports data from a datatable to excel.
''' </summary>
[code]....
View 1 Replies
Feb 26, 2010
How to change the frame rate in Visual Basic 2008 Media Player? I have error: System.NullReferenceException was unhandled Message: Object reference not set to an instance of an object. IS there any way to fix this? Here's My Code
[Code]...
View 2 Replies
Aug 9, 2009
Where in Visual Basic 2008 Express Edition Software program do you specify a specific installation directory for a program?
c:Program Filesfinished program
I want to publish my program to try it out on another system and I want to ensure its installed in the directory structure I want.
View 3 Replies
Oct 25, 2009
i'm running Visual Basic 2008 Express Edition (latest service pack ... 9.0.30729.1 SP) on XP Pro SP3 with .Net Framework version 3.5 SP1 I have a rather large project I've imported from Visual Studio 2003 (Standard).The project compiles and runs just fine ... my compiled program itself never crashes.
But while I actually have the code up in the IDE, and simply adding/deleting code the whole IDE will randomly crash (usually without warning) and I loose my changes since last save.If/when I do get some hint of why it crashed, I get a window about illegal whitespace or something.... but that's rare ... usually it just crashes without warning and the whole IDE completely shuts down instantly. just deleting/adding a character is enough to trigger it maybe once every 30 minutes.
This is on a computer that is otherwise very rock solid .... no other program ever crashes, etc.
View 1 Replies
Jan 20, 2010
Is it possible to edit the Windows Form Designer generated code in VS2008?
View 4 Replies
Oct 15, 2011
My some problem for vs 2008 in mobile applications How to learn mobile device board serial number in vb 2008?
View 2 Replies
May 10, 2008
this event works ok, but the problem is that I don't know what field was clicked. Should I use objectinfo or something else? VB.net won't recognize for example e.objectinfo.
View 1 Replies
Jul 20, 2010
How can I display column contents of a MS SQL Database on Text Box using VB 2008
View 2 Replies
Nov 27, 2011
problem use Visual Studio 2005,2008 with Microsoft SQL Server 2008 R2 , when open vb.net choose : add new data source and choose database and add connection when choose Microsoft SQL Server (SqlClient) show error this version not supported
View 2 Replies
Mar 5, 2010
What i need to write is i get different signal from PIC16F877A and through serial port, i need to display diffrent text from different signal, Such as: Signal from portB.1 display 1, signal from portb.2 display 2. Between the microcontroller and serial port im using MAX232.
View 2 Replies
