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  • Users: RK62
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  1. R

    SQL Server Compact database size

    Thanks. I will try SQLite and see how it works. Local cache is here what I'm mostly looking for.
  2. R

    SQL Server Compact database size

    SQLite sounds interesting as it is unlimited size. Can you outline the main differences between those three alternatives. Why would anybody use SQL Server Compact for example? My main point of interests are the unlimited size, easy development with .NET (synchronization services needed), free...
  3. R

    SQL Server Compact database size

    Ok, based on the initial testing I expect 4GB is not enough at some point in time. So should I go for other alternatives then right away, and what are they?
  4. R

    SQL Server Compact database size

    I would obviously do that should I have the data in hand now but I don't. Does the database size increase linearly? If I have for example a table with 50 columns and 1,000,000, rows but expect to have 2,000,000 rows after one year, can I estimate my database size will double?
  5. R

    SQL Server Compact database size

    I need a free database with my .NET desktop application. It must be shipped to the final user along with the application when the application is installed without any additional hassle or any additional installation procedures by the user. I use Visual Studio 2010 and saw SQL Server Compact 3.5...
  6. R

    How to track changes in web pages

    I need to track any changes in certain web pages (1000+ unique URLs). How can I add such component to my .NET code? I know there are external free programs doing it that send email whenever there is a change but I need to include that kind of component into my existing .NET application (and I do...
  7. R

    How to sort a BindingList

    I recently converted a List collection that contains my custom objects to a BindingList collection. The sorting seems not to be supported in a BindingList. The original myList.Sort(New myObjectComparer) errs that the Sort is not a member of System.ComponentModel.BindingList(of myObject) What...
  8. R

    Introductory tutorials to connect desktop app to a remote server and databases

    I'd need some guidelines on connecting the VB.Net desktop application to a remote server. Basically, I'd like to know where to start since I have no previous experience of this area. 1. What additional services have to be bought (on top of Visual Studio) ? - Windows Server 8 - Any...
  9. R

    Problem with binding to DataTemplate

    Yes, that was it. Thanks.
  10. R

    Problem with binding to DataTemplate

    I'm trying to reuse a datatemplate defined in the window's resources but I receive "The resource ToolBarButtons could not be resolved" error. The datatemplate, where I'm trying to bind to is (some code replaced with ...): <Window.Resources> <DataTemplate x:Key="ToolBarButtons">...
  11. R

    Display image based on string value

    I'm looking a way to display a country flag (an image/icon) in an image control that is tied to a grid control that is tied to my custom object. In my custom object I have a field defined as String, which has a country name. For example, the selected row in the grid may contain a country named...
  12. R

    Format string to display sign

    I'd like to display a value with a sign (both positive and negative). How should I define the StringFormat property to do that (in WPF)? I currently have <TextBlock Text="{Binding myValue, StringFormat={}{0:N2}}" /> but how do I add the sign to it? For example the value 0.69 should be...
  13. R

    Cannot read Excel 2010 files with Jet.OLEDB.4.0

    Yes, I understand the build configuration. I'll try your suggestions. Thanks for your response.
  14. R

    Cannot read Excel 2010 files with Jet.OLEDB.4.0

    So I need to develop both x64 and x86 versions. Most of the users will have 32-bit Office so x86 is usually enough. I just have to make them know that if they in any day move to 64-bit Office, they have to install a new application. By the way, is there a way to check through VB.net code which...
  15. R

    Cannot read Excel 2010 files with Jet.OLEDB.4.0

    Ok. I see I have to get the ACE OLEDB 12.0. Two questions: 1) Do the users of the application (that includes ACE OLEDB 12.0) need to install separately anything? Or is it only me (as a developer) who has to install it? 2) If I target x64 as you mentioned, will it then always work with 32-bit...
  16. R

    Cannot read Excel 2010 files with Jet.OLEDB.4.0

    I have used OLEDB to read from closed Excel 2002 and 2003 files (.xls). Now when I have to start reading from Excel 2010 files (.xlsx) the connection fails. For a connection string I use: sConnectionString ="provider=Microsoft.Jet.OLEDB.4.0; data source='" & sSourceFile & "'; Extended...
  17. R

    Storing images to a class property and to a dataset

    What is the best way to store images to a property in a class and/or to a datatable? I have a class like this: Public Class Person Property pictures As List(Of Byte()) End Class ...where I want to store a collection of .jpg/.bmp/.gif/.png pictures that the user can select from the...
  18. R

    Adding to list collection generates an error

    Thanks for the quick reply. Changing the declaration to: Property Assets As New List(Of Asset) will solve the problem.
  19. R

    Adding to list collection generates an error

    I'm trying to populate class properties where one property is a list collection. I get a NullReferenceException when trying to add to the list collection. The code (litlle bit simplified) is here: Public Class Portfolio Property Name As String Property Assets As List(Of Asset)...
  20. R

    Application preventing saving/modifying of Excel workbook

    Its possible but its not secure. Sheet and VBA protection is too easy to crack. That's why I'm looking VB.net application to do the check.
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