Attaching A Custom DependencyProperty To A StackPanel In WPF?
Jul 7, 2010
I'm trying to make a mouse over for a stack panel in WPF using a custom DependencyProperty (StackPanels do not handle the MouseEnter event).
I've created a class for the DependencyProperty like so:
Public Class MouseEnterBehavior
Public Shared Property MouseEnterProperty As DependencyProperty =
DependencyProperty.RegisterAttached("MouseEnter",
[Code]....
I was able to get the code to compile and run, however the binding doesn't occur.
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Aug 26, 2010
Scenario: A VB6 library calls a method in a .NET-Assembly through COM and with that opens a WPF-Dialog, which is contained in another .NET-Assembly that is early bound. This WPF-Dialog got a complex master/detail implementation over a DependencyProperty of type ObservableCollection on this dialog. The DependencyProperty looks something like this:
public static readonly DependencyProperty ThatDependencyPropertyProperty =
DependencyProperty.Register("ThatDependencyProperty", typeof(ObservableCollection<SomeClass>)
[Code]....
Problem: After this dialog gets closed through setting DialogResult and is being completely re-instantiated, this DependecyProperty still got it's values and the dialog is still displaying the previous master/detail information. My current workaround is to simply let the dialog clear the collection in it's ctor, but I certainly don't like this... what could keep this collection alive through two instantiations?
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Nov 29, 2009
I create a UserControl (TableWithFilter.xaml) with a dependency property (source). The UserControl is a Table with a source property for the different items. I created the XAML and set the source property via the XAML Binding. So far so good.
But if the value of the dependency property is changed, the defined callback method is not called. Therefore I cannot update the entries in my table. Has anyone an idea why the callback method is not called?
Here is the definition of my property in the class "TableWithFilter":
Public Shared ReadOnly SourceProperty As DependencyProperty = _
DependencyProperty.Register("Source", GetType(List(Of TableViewItem)), GetType(TableWithFilter), _
[Code]....
If the attribute "ContentList" is changed I expet that the "ChangeSource" method in the TableWithFilder class is called. But this is not the case. After I changed the ContentList attribute, I Raise the following Event:
RaiseEvent PropertyChanged(Me, New PropertyChangedEventArgs("ContentList"))
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Jan 23, 2012
I'm new to WPF and a beginner to VB.NET. I try to teach myself and I only post on forums when I've tried and searched threads and come up empty.I'm pretty sure I need to use a For Each loop, and I can do this when moving/deleting etc. files in a directory, but not for going through controls. I can do it "easily" with an If Then statement
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Jun 30, 2010
I'm using MVVM.
<ItemsControl ItemsSource="{Binding AllIcons}" Tag="{Binding}">
<ItemsControl.ItemTemplate>
<DataTemplate>
<StackPanel>
[Code]...
I'm able to capture the command. However, I want to execute the command binding when the mouse enters the stack panel, not when I click a button.
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May 30, 2012
This is my first time using WPF. It has been a bit of a nightmare, but I've done enough of the project that I now don't want to start all over again with a forms application.
My problem is this: I have 50 textboxes inside an expander, which in turn is inside a stackpanel. I need to store the value of each textbox in an array. In forms I would probably do it something like this (I am using vb.net by the way):
Dim i As Integer
Dim values() as string
For i = 0 To 49
values(i) = form1.Controls("TextBox" & i).text
Next i
(Assuming my textboxes were named Textbox1, Textbox2, Textbox3 etc.)
How can I do this in WPF? I've tried using Trees (I think they're called?) but have failed every time and now given up.
Oh, I also forgot to mention that there are also other controls in the expander (labels that are paired with the textboxes).
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Jan 8, 2010
I have good model (I think!) for how to allow a user to drag an element in a stackpanel and reposition it to another location within the stackpanel. However, my Stackpanel is placed within a ScrollViewer, like this (generalized):
[Code]...
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Sep 21, 2010
I am developing a desktop application in VB.NET 2005. I have a requirement whereby a user need to select a .txt file from his machine (client) and after clicking the save button, i need this file to be saved in the server into a specific folder. Similarly, i should be able to retrieve the file as well.
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Feb 11, 2012
I am using following code to attach my database to SQL Server. The problem is if I create a new file and attach it through my code but when I detach the file using SSMS and again run the same code, it gives error. [code] All the permissions are the same even first time.Also what should be the connection string if I need to use DB with uid sa and pwd abc123?
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May 4, 2012
I don't know if I am asking the question correctly, but I want to keep a program I use all the time in memory (running).So instead of closing the program (main form), I would like to simply set it's visible =false. This is easily done and works.Then on restart (I already know how to check to see if it is running) I would like to attach to it and make that running version's main form be visible again.
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Jan 27, 2012
Just after installing my application, I need to attach my DB to SQL server. I am using following code for it.
Dim cmd As New SqlCommand()
Dim vrMyConString As String = "Data Source=.SQLExpress; INITIAL CATALOG=master; uid=sa; pwd=sa;"
Dim conn As System.Data.SqlClient.SqlConnection = New SqlConnection(vrMyConString)
cmd.CommandText = "sp_attach_db 'e:dbTest.mdf', 'e:dbTest.ldf'"
' conn.ConnectionString = "Data Source=.SQLExpress; INITIAL CATALOG=master; uid=sa; pwd=sa;"
conn.Open()
[Code]...
It returns an error:"Login failed for user 'sa'. The user is not associated with a trusted SQL Server connection."
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Jun 21, 2010
I am trying to write code to send a mail message with an attached file.my code works fine if I don't try to attach a file but crashes when I do. I have not been able to figure this out.[code]
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Sep 1, 2010
I have a project that I am doing which is as follows and need your help to complete the last section I can start word no problem with process.start("winword.exe")the problem is the attachment I attached the documents using project resources and then add exisiting text files and attach it to the project but when I debug I get the following error the code used is as follows
Process.Start(My.Resources.Results
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Apr 16, 2008
How to attach any type of file in VB.NET.I want information or if possible code to attach any type of file in VB.NET.
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Jan 13, 2011
I already made a .VB project using MVS 2010,I'm new in attaching database to SQL server and I'm confused attaching which database I'm going to attach because in the same folder i found that there's two
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Jan 27, 2012
Just after installing my application, I need to attach my DB to SQL server. I am using following code for it.[code]It returns an error: "Login failed for user 'sa'. The user is not associated with a trusted SQL Server connection."
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Jun 6, 2012
I've written a simple program for viewing images. My issue is how someone would view these images If I deployed my project to a client. To display the images, I have an Access 2007 database with the full path written for each and the program reads the full path into the Picturebox.ImageLocation property. I've also stored the full, root, and relative paths in the database as separate fields. My issue is how to add these pictures to my project. and which project to add them to.
Do I add them to the main project with my forms?Do I add them to the installer/setup-wizard Project?Should I all the files individually or as a compressed .zip file? Additionally, I don't know how to point to these files once they're installed on a different machine/network. Do I write a different root path to the database when the program is installed somehow?
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Nov 4, 2011
say I have a library, in which I added a few Console.WriteLine(..) statements tot during the implementation and see w going on when I use the library in a Console AppNow I want to use the same library in an ASP.NET app. Ideally I would be able to log on to the production webserver, and somehow start a command prompt and attach it to the website and see the messages in real time as they occur. How do I do that?
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Aug 23, 2009
How can i create a setup that should also install MSDE and attached the database
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May 28, 2011
I want the program I am making to show the cursors position on the process it is attached to. Sorry if this is a lot to ask for. Can you tell me how to.
1. Make a drop down menu with the list of process.
2. When i click on one of the processes, my program attaches to it.
3. When I move the cursor over the process, my program tells me the co-ordinates of the mouse on the process.
4. When i press F3, Timer3 Starts.
5. Make the mouse move to a co-ordinate on this process.
If it is too much to ask for, can you just tell me how to do 1 of them and hopefully someone else will tell me to do the others.
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Jan 26, 2012
if user needs to attach the databases to the instance of server manually before being able to use the application?I have added the mdf file to my Setup project. It installs and copies the file to application folder. I donot know if the file needs to be attached or there is a way that application could do it automatically (attach to MyComputerSQLExpress)
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Apr 25, 2009
simple way of attaching a progress bar to the tasks of a button.When I press a button, several tasks will commence and I want a progress bar to show it's... well... progress.
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Jan 26, 2012
I am using the following VB code to attach my DBs to server.
Dim cnnConnection As New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=" & Application.StartupPath + "datafiles" + TextBox1.Text + ".mdf" & ";Integrated Security=True;Database='" & TextBox1.Text & "';Connect Timeout=30")
cnnConnection.Open()
But it gives an error:
Unable to open the physical file "D:.Net ProgramsSQLDBAttachExperimentsSQLDBAttachExperimentsinDebugdatafilesdbSQLtest.mdf". Operating system error 5: "5(error not found)". Cannot attach the file 'D:.Net ProgramsSQLDBAttachExperimentsSQLDBAttachExperimentsinDebugdatafilesdbSQLtest.mdf' as database 'dbSQLtest'.
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May 17, 2010
I am currently using the follwoing in my install routine, the idea is to check if the db exists. if the db does exist then leave the mdf name as is and attach it as a temp db then i can run a compare between the 2 db. however if the db does not exist i want to rename the mdf and attach it. however after renaming the mdf i cant attach the file.[code]
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Mar 8, 2009
attaching filesI am using VB2005 and MS access as a database.I have created a project where a user can add a new record and sometimes with adding the new record you also need to add backup, example a picture,excel, word, txt,pdf.I need to know how to do this?It can be save either on a folder on a local drive or database.I would like to be able to select a file and save it, and if
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Feb 15, 2012
I am attaching DBs using following code.
Dim conn As New SqlConnection("Server=MyHomeServerSQLExpress;Database=master;Integrated Security=SSPI")
Dim cmd As New SqlCommand("", conn)
cmd.CommandText = "CREATE DATABASE dbNoPWD ON ( FILENAME = 'd:dbNoPWD.mdf' ), ( FILENAME = 'd:dbNoPWD_log.ldf' ) FOR ATTACH"
conn.Open()
cmd.ExecuteNonQuery()
cmd.Dispose()
conn.Dispose()
I do not want to give any username and password. When I ran the above code and then checked SSMS, I found my attach DB was not checked in Roles (pls. see pic.) The problem with this is my network computers can not access this DB. I want to run some code like above (without sa password) and want that all my network computers can access the DB without my user get involved in setting up SSMS.
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Apr 4, 2010
i have a list of links on a form and when you click one, it will set a specific groupx visible to true in a set position. So I have about 8 groupbopx control on this form. When I drag one out of the way and another in the form in design time, it seems they stay inside one another at times if they overlay. I don't understand this. Then some will not show at runtime depending where they arer left from design time even though I set the position to be in the form. This is completely different from vb6. Why are they staying inside other groupbox controls rather than being independent?
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Mar 20, 2012
I am trying to attach my mdf files to SQL server (using windows XP) but it gives operating system error (error 5), saying Access is denied to the dbMaster.mdf
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Jul 22, 2010
I'm using Redumption to send a mail using VB.NET, I've stored a file with an unique name exg.c:docs123.pdf which I'm supposed to attach to the mail with a different name "Appliaction.pdf".
[Code]...
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Jun 3, 2010
how can i attach a progress bar to a crystal report progress control, my code extracts the data from the SQL Server database and displays it on a crystal report. all this process may take long time as the data size may be large or joins may take time, so how can i display this progress in a progress bar. How to attach hidden processes to the progressbar.
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