vb.net

Develop Messenger using .net

hi techies, i have assigned a task to develop messenger application using vb.net and asp.net, please guide me how to develop this application , should i have to use any third party controls thanks Jeyakumar ...

InvalidCastException with WebBrowser.IsBusy or ReadyState (VB .NET)

I was playing around with the method that was suggested as an answer to another of my questions (http://stackoverflow.com/questions/1731752/automate-website-log-in-and-form-filling), and noticed something curious. The answer to the above question was to use a series of javascript calls as URL's in order to fill in a web form and submit ...

Slow while loading data to treelist in DockManager

While loading data to treeList from sql database in dockManager of MDI Parent Form then it takes time to load data so can u help me to solve this problem.. ...

How to save the input values?

Using VB.Net Database Form Server Name, Username, Password - textbox SQL Authentication, windows Authentication - checkbox I have Database Form, First Time i run my software, I have to give Server Name, Window or SQL Authentication mode, UserName and password. Next Time I run the software, given data's like Server name, username, pa...

What is equvalent code for following c# code

if (node.Attributes != null) //checking for attributes of a xml file node. ...

Place DLLs in GAC on Solution Build in Debug

We have a couple of DLLs that need to be put in the GAC at compile time only in Debug mode as this is what developers use locally. Release mode will be the Continuous Integration server build and we will not want to put any dlls in the GAC. We used to do something similar with post build events on a project, but if a post build event ...

Best practices when handling data being stepped along a process

I am currently creating a Windows App for a handheld device (WM 6.0, CF 2.0, sqlce 3.5) that pulls data from the server only when connected to a dock (all the significant data is maintained/altered on the handheld til it comes back and is docked for a sync with server). The data is similiar something UPS would do in that it manages picku...

A Real Timespan Object With .Years & .Months

To my disappointment I noticed that there is no real timespan object, if you get a timespan, and do a .years or .months you'll get nothing, you'll only get .days and lower because a timeSpan object doesn't carry anything to tell it which month or year the timeSpan was created on. Ttherefore it'll never really know how many months it's be...

C# to VB.Net Syntax conversion

Can any one translate the following syntax to vb.net. m_TextBox.Loaded += TextBoxLoaded m_TextBox.Loaded -= TextBoxLoaded; private void TextBoxLoaded(object sender, RoutedEventArgs e) { Init(); } .. containsTextProp.AddValueChanged(m_TextBox, (sender, args) => UpdateAdorner()); ... private void UpdateAdorner() {...} ...

DataGridView error when backspace on number column

I'm using VB.NET 2008. I have an Bound DataGridView with a numeric column that can be edited. However when one selects the number and backspaces there is an error. If I trap it in DataError Event the error message is "Input String was not in a correct format". How can I prevent this error? ...

itextsharp: java to vb.net

i am trying to change the font on a pdftable and i have this hint in java but need some help to put it into vb.net PdfPTable table = new PdfPTable(3); table.AddCell("Cell 1"); PdfPCell cell = new PdfPCell(new Phrase("Cell 2", new Font(Font.HELVETICA, 8f, Font.NORMAL, Color.YELLOW))); ...

A GINA replacement in a .NET language?

I have searched quite a lot of places and I only found one GINA replacement called pGINA but it is in C++ which I don't know at all. Does anybody know one in either C# or VB.NET? (I'm writing software for use at work to control what employees are doing) ...

VB.NET Webbrowser control with additional headers

I am using a webbrowser control and loading a website that uses basic authentication. I pass the username and password in the additional header of the navigate routine. The problem is that the header is not retained while navigating the site. I.E. I log into the site and pass the user name and password in the http header. When I cl...

Detect which column is showing an editing control in a datagridview

i have a DataGridView responsible for showing a bit of data and two of my columns allow for user input using comboboxes. The trouble is that one column only needs to show preset values in it's list, but the other needs to both show the presets and allow for the user to enter in their own values. i accomplish this by showing the editing...

VB.net Linq Expression from ListItemCollection to List(Of Guid)

I want to do something like this: Dim selectedCourses As List(Of Guid) = From item In chkListCourses.Items Where item.Selected = True Select item.Value but I get the error: Unable to cast object of type 'WhereSelectEnumerableIterator2[System.Object,System.Object]' to type 'System.Collections.Generic.List1[System.Guid]'. ...

Datepicker Watermark

I found this answer in Stackoverflow for Removing Datepicker Watermark. <Style TargetType="{x:Type toolkit:DatePickerTextBox}"> <Setter Property="Text" Value="Bitte wählen" /> </Style> is it possible to set above using vb.net code. Thank you, Rey. ...

Dynamically named variables in vb.net

What I would like to do is be able to take a Dictionary of key value pairs and make the key the name of a variable and the value the value. From searching the net seems to be very vague on whether this is possible. The equivalent in PHP would be: foreach($array as $key=>$val) { $$key = $val; } Thanks. ...

"Caret Position" in VB.NET for syntax highlighting

Hi, I'm trying to make a TextBox with syntax highlighting (for (HTML/CSS) in VB.NET 2008. I figured that if I use RichTextBox.Find(), I can color specific text, but then I need to call RichTextBox.DeselectAll(). The problem is that the the cursor jumps to the beginning of the RTB. I'm using WinForms. Any ideas? ...

Display loading animation while starting up a form in VB .NET

I understand this might be asked before : http://stackoverflow.com/questions/403202/show-a-loading-screen-in-vb-net But anyone can provide me something like : ' Show Loading Screen --> Do anything like initializing or updating UI ' Close Loading Screen In this case I can fire (Show Loading Screen) anywhere in the form I want, Li...

Changing UI elements from another thread in .NET

I don't get it. If I want to change the text on a button from a thread other than the UI thread in Visual Basic .NET, I need to use a delegate, and do something along the lines of Private Delegate Sub SetTextDelegate(ByVal TheText As String) Private Sub delSetText(ByVal TheText As String) Button1.Text = TheText End Sub Private...