Databound User Control Doesn't Display Data In Main Form?
Apr 23, 2009
I need to quickly demonstrate a project and decided to create a user control that is connected to an Access database through pure simple data connections (create the dataset and drag it on the control.)When I build the project and add the usercontrol to panel control on the main form, no data is shown in the datagrid.When I add the data components directly on the main form, the data is displayed properly. why I can't get my databound user control to display the data on my main form?
View 2 Replies
ADVERTISEMENT
Nov 25, 2010
I have a main form and a user control form. The user control form is on the main form. How can I send data from user control label1 to main form label 1?
View 3 Replies
Mar 28, 2011
I have a user control inside of a repeater that is being bound by a sqldatasource. I get the following error: Databinding methods such as Eval(), XPath(), and Bind() can only be used in the context of a databound control. EDIT: NEVERMIND Egg on my face. I was getting this databind error because I was binding it somewhere else in an effort to troubleshoot my real problem from last friday but I forgot about it.
WHAT MY REAL PROBLEM IS: The usercontrol is getting bound before the properties get set so it appears as if they are never set. When stepping through I see that they get on the property is hit before the set on the property is hit. For example if I put <%# EVal("Address_ID") %> before the user control I will see the ID displayed but then the user control will display an emptydatatemplate because it is being passed the ID of 0.
<asp:SqlDataSource ID="sqlFacilityAddresses" runat="server" DataSourceMode="DataSet" SelectCommandType="StoredProcedure" SelectCommand="SP_Facility_GetAddresses" ConnectionString="<%$ ConnectionStrings:Trustaff_ESig2 %>">
[code].....
View 4 Replies
Jan 5, 2011
The code is listed below which hopefully illustrates what I'm trying to do:[code]....
View 12 Replies
Aug 18, 2009
I have a windows application with a main form, on which a user control is added dynamically when a device connects trough USB.
On a user control, there is a thread wich is getting data from the device trough USB and when it is finished, I want to change a progressbar that is located on the main windows form where user control reside.
This is the code that is I call on the user control thread to change the progress bar value:
Frm_Main.UpdateProgressBar(CInt((AllBytesReceived / MaxBytesInFlash) * 100))
and this is a code that is called on the main form:
Private Delegate Sub UpdateProgressBarDelegate(ByVal value As Integer)
[Code]....
View 8 Replies
Jun 29, 2011
I just inserted data into my sql database. Actually, I want to retrieve it automaticallyinto
View 1 Replies
Apr 7, 2011
What I have is a user control that has two RichTextBoxes. In the user control, there is RichTextBox1's TextChanged event, I want it to set RichTextBox2's Text to the same as RichTextBox1's Text, I'm currently using: RichTextBox2.Text = RichTextBox1.Text. The user control is on the main form, when I run the application and type I get this error: StackOverflowExecption was unhandled. [Code]
View 4 Replies
Jun 15, 2009
Why doesn't the main window in my application allow the user to resize?
View 3 Replies
Jan 28, 2012
The company require an application that displays coffee usage information for the managers of CostaB Coffee. Sample data has been provided for last years (2011) monthly usage amounts in kilos and is as follows: 400.5, 450, 475.5, 336.5, 457, 325, 220.5, 276, 300, 320.5, 400.5 and 415.
Requirements: The main form will allow the user to enter and store monthly amounts in an appropriate data structure. It will enable the users to calculate the total usage for the 12 month period and average monthly usage. A further requirement for the application is for the users to be able to display the monthly totals in ascending (smallest to highest) and descending (highest to lowest) order of the monthly usage amounts. Utilise appropriate formatting for input/output and include appropriate error trapping and data validation in the application.
View 12 Replies
Feb 23, 2011
I have an MDI form as the app start object.I don't think is related, but in the Form closing event, I check for some condition, and if it's true, I ask for confirmation before closing:
Private Sub FormBackground_FormClosing(ByVal sender As Object, ByVal e As System.Windows.Forms.FormClosingEventArgs) Handles Me.FormClosing
If (e.CloseReason = CloseReason.UserClosing) Then[code].....
So long, everything works fine in my development machine, which runs windows XP.However, when deploying the application in a windows 7 machine, the message box works correctly, showing itself whenever it should, but after the form is closed the application keeps running in the background. This happens whether the form closes directly or asks the user first.I have fixed it putting an End instruction in the FormBackground.FormClosed event, but it doesn't feel good.
View 4 Replies
Nov 6, 2009
I have an application going here Form1 has a panel on it named TargetPnl. I need my TargetPnl to display my user control named Vviewer when I click my SearchBtn and also need it to disappear when I click another button.
View 1 Replies
Mar 2, 2011
I have an object databound to a WinForm. One property, BOLNumber is bound to a textbox on the form. When you change the value in the form, the underlying BOLNumber property is changed. But the property setter does some "formatting" to the value. I want to BOLNumber textbox to reflect the changes to the value made in the property setter immediately upon the textbox losing focus. I tried implementing the INotifyPropertyChanged interface, but I am either doing something wrong or misunderstanding something it would seem. How do I get the databound control to reflect the changes to the underlying data source?
Public Event PropertyChanged As PropertyChangedEventHandler _
Implements INotifyPropertyChanged.PropertyChanged
Public Property BOLNumber As String
[code]....
View 3 Replies
Mar 12, 2010
I'd like to use a TreeView control to display database data in a windows form with VB2008. All the information what I found is related to a website design, but I'm working on a database program (sql2005), where I'd like the user to see the structure what he/she make up with a TreeView like control. Just something like that when you explore your hard disk. How can I do that?
View 3 Replies
May 1, 2011
How can I transfer data from a web form to a user web control ? does the diffrence in the programming language affect ?
View 1 Replies
Apr 25, 2010
How can I check for my combo box to have a selected item? I want to display a message box if the user doesn't select anything from my combo box.
View 3 Replies
Sep 2, 2011
VS2010 VB.NET windows form app I have a login form that is my startup form.when uer hits OK I display the main form and close the login form, like this:
PrivateSub OKButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OKButton.Click
frmMain.Show()Me.Close()EndSub Problem is the application closes with me.close. Why? How can I close only the login form and leave the main form urnning???
View 3 Replies
May 18, 2009
sConn.Open()
lDA.SelectCommand = New SqlClient.SqlCommand("SELECT * FROM login WHERE username='" & TextBox1.Text.ToString & "' and userpassword='" & TextBox2.Text & "'", sConn)
lDS.Clear()
lDA.Fill(lDS)
If lDS.Tables(0).Rows.Count > 0 Then
[Code] .....
This is my code to enter login form and after that main form is opened. Still loginform is there. How to close the login form and display only main form after login successes.
View 14 Replies
Mar 15, 2010
I've got a Panel on a main Form containing a PictureBox control on Top of a TableLayout control. Both the child controls have their docking properties set to Top. The Picture control has sizemode set to Zoom.
What I'm finding is that the picture doesn't size properly when I start the app. There is a border at the top and bottom in the PictureBox control. It's only when I resize the overall form that it's correct.
So at the moment I've got this ugly bit of startup code, just to fix the problem Me.WindowState = FormWindowState.Normal Me.WindowState = FormWindowState.Maximized
What am I missing?
View 2 Replies
Mar 25, 2010
im trying to do where the main form is a login form if the USer and password matches that in the code it goes to the main screen if it doesent it launches a form saying this user and or password is incorrect and when you click ok it closes that message window as well as the login form stop the program from launching is has to match the user and password from the text on text box one and masked textbox 1.
View 3 Replies
Jan 14, 2010
Hello.. I'm using a splash screen for the first time in an exercise. I have it set up to display the splash screen before going to the main form. I made changes to the splash screen title and copyright information. When I execute the program, the splash screen comes up but it's not displaying the information I changed. When I view the splash screen the changes are saved. It displays the project name where the application name should be.
View 18 Replies
Feb 25, 2012
I am wanting to display my Application name in the text property of my main form. This is the code I a using:
Me.text = My.Application.Info.Title & " " & My.Application.Info.Version.ToString I am wanting to change the name of my project from when I first created it and for this new name to be displayed via the above code.
I have changed the name under the properties setting, yet it is not updating.
View 2 Replies
May 12, 2012
I'm having trouble with collections and how it works, what I have so far is classes and I have attempted to do collection but it is not working properly. I am trying to have the collection hold the classPerson,classCustomer, and classPreferredCustomer properties, and then display it to list and labels in the Main form. [Code]
View 7 Replies
Jun 12, 2009
I'm attempting to bind a combo to a collection of objects:
Dim t As New TradeOrderStatus()
Dim ts As List(Of TradeOrderStatus) = t.GetStatuses
With Me.cboTradeStatus
[code]...
This works fine and I see the list of items in the combo. However when I try to set the SelectedItem of the combo to one of the items:
Me.cboTradeStatus.SelectedItem = Trade.TradeStatus
nothing happens. Trade.TradeStatus is an instance of the class TradeOrderStatus and all the necessart statuses are visible in the drop-down list. The SelectedItem remains as Nothing (or as the first item in the list if I omit the .SelectedItem = Nothing line from the binding code).
Debug.Print(CStr(Me.cboTradeStatus.Items.Contains(.TradeStatus)))
also returns false.
View 3 Replies
Feb 8, 2012
I have a couple of user controls, which I show in my main form.
So let's say here's what i want:
Sub Show_Control1()
UserControl1.Show
'CODE TO HIDE EVERY OTHER DISPLAYED USER CONTROL ON THE MAIN FORM
End sub
Right now I have to hide them one by one with hide, because I don't know what's the current displayed form.
View 2 Replies
Mar 28, 2009
Is it possible to be able to have a main form load, but then have a logon form load on top of it and the user cannot select anything from the main form until the have logged in.
View 4 Replies
Feb 24, 2012
I created a simple user control with a label, and one property that allows me to set its text.I can call the property Text2 and everything works well, but if I call it Text it doesn't work.
I tried both this:
<Browsable(True)>
Public Overrides Property Text As String
[code].....
View 7 Replies
May 27, 2010
I am using DevExpress GridControl to display information from my database through a stored procedure (ie. SELECT * FROM aTable). Unfortunately when I run the program it doesn't display any of the information, columns, etc. It displays an empty table. I know that there is information contained by the GridView though as I have print statements that return the row count. Specifically:Console.WriteLine(GridView2.RowCount) ' returns the number of rows that should be displayedConsole.WriteLine(myTable.Rows.Count) ' returns the number of rows that should be displayedWhat should I do so that the actual data within the table (DataTable) and the DataView is displayed to the user. I know the row count is correct as when I add/remove a record the row count correlates by incrementing/decrementing.
View 1 Replies
Mar 7, 2011
I'm trying to test/debug a WPF UserControl library in Visual Studio 2010 with the User Control Test Container.exe. I keep getting the error "Assembly [...] doesn't contain any UserControls." This should be simple, and every msdn article and blog tutorial I've looked at suggests that it should all just work perfectly and magically.[code]Project File has debug options set to open UserControlTestContainer.exe, with ./MyTestLibrary.dll as a command-line arg.
View 2 Replies
Sep 3, 2009
How to control other form from a main form? For example :
I want to change background color in Form2 after a button in Form1 is clicked.
View 3 Replies
Aug 1, 2011
I am writing a VB.Net program. In my Main form, I ask the user if he has an old file that he wants me to convert first. If he says "yes", I start converting the file, loading the records into an Access database. I want to update a line on the form, showing my progress. But the form doesn't display until AFTER the entire file is converted (and loaded into the database). That means the user has to look at a form for 2-3 minutes without knowing if the program is actually processing, or is hanging up (looping).
I don't understand what is going on, and so I don't know what to do about it. I'm sure SOMEONE with experience has come across this situation before.
View 3 Replies
