vb.net

Why would Guid.NewGuid() be generating an empty guid?

I have a Guid.NewGuid() call that is creating an Empty Guid. What would cause such a problem and how can I fix it? Edit: The code: <WebMethod()> _ Public Function CreateRow(rowValue As String) as String Dim rowPointer As Guid = System.Guid.NewGuid() Dim rowPointerValue As String = rowPointer.ToString() Try Dim r...

Return FileName Only when using OpenFileDialog

I am using the following method to browse for a file: OpenFileDialog.ShowDialog() PictureNameTextEdit.Text = OpenFileDialog.FileName Is there a way get ONLY the file name? The FileName method returns the entire path and file name. i.e. I want Foo.txt instead of C:\SomeDirectory\Foo.txt ...

VB.NET Static Code Anaylsis

Does anyone know of a good code static code analyser for vb.net? I've seen plenty for c#, and I think VS 2008 some one built in. But we're currently only using vs 2005... ...

How to set OpenFileDialog View Menu to Detail View?

How can the OpenFileDialog View Menu be set to Detail View? ...

Hiding/Locking tables in oracle

How do I hide/lock a few tables in Oracle so that only my application has access to modify those data in the table? ...

How to cause my VSTO 2005 SE Outlook Addin to crash so that it's disabled?

For testing purposes I need to get my Outlook 2003 addin (vb.net) disabled so that it can only be reactivated through the help menu or by deleting the resilency key from within the registry. I tried to achieve this by creating an unhandled invalid cast exception during the startup eventhandler but this does not help. Outlook only says t...

Picture box goes blank

In VisualBasic.Net When I activate a picture box and then draw something on it, it draws and then immediately goes blank. Works fine when I re-draw it, but almost always messes up the first time I draw on it. This has happenned with several different programs, and the help file is no help. ...

Getting primary key after an insert in asp.net (visual basic)

I'm adding a record like this: Dim pathString As String = HttpContext.Current.Request.MapPath("Banking.mdb") Dim odbconBanking As New OleDbConnection _ ("Provider=Microsoft.Jet.OLEDB.4.0;" & _ "Data Source=" + pathString) Dim sql As String sql = "INSERT INTO tblUsers ( FirstName, LastName, Addre...

3d files in vb.net

Hi, I know this will be a difficult question, so I am not necessarily looking for a direct answer but maybe a tutorial or a point in the right direction. What I am doing is programing a robot that will be controlled by a remote operator. We have a 3D rendering of the robot in SolidWorks. What I am looking to do is get the 3D file into ...

Writing an update query in asp.net (access database) (visual basic)

I have this code: Dim pathString As String = HttpContext.Current.Request.MapPath("Banking.mdb") Dim odbconBanking As New OleDbConnection _ ("Provider=Microsoft.Jet.OLEDB.4.0;" & _ "Data Source=" + pathString) Dim sql As String sql = "UPDATE tblAccounts balance = " & CDbl(balance + value) & " WHE...

Array of Queues in VB.Net

Probably a very dumb question, but I want to create an array of queues in vb.net - so I can reference each queue with an index: eg commandQueue(1).enqueue("itemtext") commandQueue(2).enqueue("othertext") where commandQueue(1) refers to a separate queue than commandQueue(2) I've got all tangled up trying to define an object array an...

ReadProcessMemory keeps returning 0

I'm currently developing a little hobby project to display health information in a game on my G15 keyboard through VB.NET. When I use ReadProcessMemory via an API call, it keeps returning zero. The MSDN documentation referred me to use the Marshal.GetLastWin32Error() call to find out what is wrong and it returns 1400: INVALID WINDOW HAN...

Multiple Dispatchers problem

I have the following problem: Multithreaded WPF application, Model View Presenter Implementation. Presenters and Views that belong together are created by a factory on a separate thread and should get a separate Dispatcher. Public Function CreatePresenter(Of T As {New, Class})(ByVal p_eCreationOptions As eViewCreationOptions) As T Impl...

Applying Extension method to generic class with generic type.

I was working with the generic class in vb.net. And it seems extension method cannot be applied to generic class without specifying the type. I have this generic class Public Class MyGeneric(Of T) 'Methods and properties go here ' ' End Class This is Ok <Extension()> _ Public Sub DoSomething(ByVal myGenericDoubleObj As ...

How can I convert a REG_BINARY value from the registry into a string ? (vb.net)

I have a registry value which is stored as a binary value (REG_BINARY) holding information about a filepath. The value is read out into an byte array. But how can I transform it into a readable string? I have read about system.text.encoding.ASCII.GetString(value) but this does not work. As far as I got to know the registry value is arbi...

Find and start a VPN connection in VB .NET

Hi all, I am using NetworkInterface.GetAllNetworkInterfaces() to get all the interfaces on a PC. However, this appears to only return "active" interfaces. How can I find "inactive" network interfaces, such as unconnected VPNs, disabled NICs, etc. in .NET. I would like to find them by their name in "Control Panel" -> "Network Connectio...

Extracting equations and images from Word

Is there a programmatic way to extract equations (and possibly images) from an MS Word document? I've googled all over, but have yet to find anything that I can sink my teeth into and work from. If possible, I'd like to be able to do this with VB.NET or C#, but I can pick up enough of any language to hack out a DLL. Thanks! EDIT: Rig...

How to dynamically invoke a chain of delegates in VB.NET

Does someone knows if it's possible to dynamically create a call chain and invoke it? Lets say I have two classes A & B: public class A public function Func() as B return new B() end function end class public class B public function Name() as string return "a string"; end function end class I want to be a...

Dynamic logical expression parsing/evaluation in C# or VB?

What is the best was to evaluate an expression like the following: (A And B) Or (A And C) Or (Not B And C) or (A && B) || (A && C) || (!B && C) At runtime, I was planning on converting the above expressions to the following: (True And False) Or (True And False) Or (Not False And True) or (True && False) || (True && False) || (! False ...

Easiest way to display XML on an ASP.NET page

I have some XML in an XmlDocument, and I want to display it on an ASP.NET page. (The XML should be in a control; the page will have other content.) Right now, we're using the Xml control for that. Trouble is, the XML displays with no indentation. Ugly. It appears that I'm supposed to create an XSLT for it, but that seems kind of bor...