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  1. 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...
  2. 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...
  3. 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...
  4. 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...
  5. 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">...
  6. 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...
  7. 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...
  8. 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...
  9. 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...
  10. 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)...
  11. R

    Application preventing saving/modifying of Excel workbook

    I'd like to know if it is possible to create a VB.net application that monitors the usage of certain Excel workbooks. The desired process is as follows: 1. I give a model which is created with Excel to my client 2. I want to licence that model for one year at a time 3. The user is required to...
  12. R

    Correlation table from input data

    How to create a correlation table from the input data? I need a function that returns a correlation table (a two-dimensional array of doubles for example) and takes input data series as an argument. For example, I may have data where the first item data series is {2,3,4), second item {3,7,5}...
  13. R

    Borders around toolstrips on MDI form

    I have a MDI container form with menustrip, toolstrip and statusstrip on it. The backcolor of these items is black. The toolstrip and statusstrip show ugly white borders around them which I want to get rid of but there seems to be no such property like bordercolor or anything where I could...
  14. R

    Return multiple values from a function

    Is it possible to make a function that returns both a datatable AND a list(of custom class) at the same? In my GUI layer, the main form (the application is MDI) calls this function and it has to fill the datagrid on one of its child forms and it also has to fill lot of other child forms with...
  15. R

    VS 2010-like gradient background on MDI parent form

    I have a MDI parent form where I would like to set up the form's bakground style something like is used in Visual Studio 2010 (blue with gradient effects). How can that be achieved programmatically?
  16. R

    Financial data providers

    I need to dowload financial data (interest rates etc.) to the VB.net application and display it in various charts and tables. Does anybody have experience of the third-party data providers like Bloomberg or Reuters and their data transfer mechanism to .Net applications? It also seems that the...
  17. R

    Resizable MDI form without title bar

    I try to create a MDI child form that should be resizable but it should not have a title bar visible. Is it possible? Or is there a better method to display child windows within a main form than displaying other forms. In this case the panel would be visually better than the form but the panel...
  18. R

    Interactive flash charts on windows forms

    Is it possible to create interactive (flash) charts on vb.net windows forms? I mean for example charts where the user sees additional information when hoovering on the bar with the mouse or can click on a specific point in the chart to get additional information.
  19. R

    MDI interface with tabpage control

    I'm struggling how to set up MDI interface where I have a tabpage control on the parent form. Each individual tab page should act as a parent to multiple child forms but within a tabcontrol there is no IsMdiContainer property like on the form. Is it possible to set a tabcontrol to act as a parent?
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