vb.net

Ensure persistence of objects between calls

Hi to all. In a rather complex page where cohexist various update panels i have a userControl within an UpdatePanel like this: <asp:Panel ID="TreeViewDossier_Panel_Contenitore" runat="server" CssClass="TreeViewPanel"> <asp:UpdatePanel ID = "UpdatePanel_TreeViewDossier" runat = "server" ChildrenAsTriggers="False" UpdateMode="Conditi...

VB.NET Me.Close() doesn't work, the form doesn't close??

Hi all, The form is an About Us form so has nothing on it only a text box and a OK button. Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click Me.Close() End Sub Here is how I'm opening the form: Private Sub AboutAppStripMenuItem_Click(ByVal sender As System.Object, ByVal e ...

VB.NET How do I release an open file?

Hi all, I'm opening a file called tempImage.jpg and showing it on a form in a PictureBox. I then click a button called Clear and the file is removed from the PictureBox using PictureBox2.Image = Nothing, however I'm unable to delete the file as it is locked open. How can I release it so I can delete it? I'm using VB.NET and a fo...

Load DataTable Using Linq - Convert C# to VB.Net

I found the following example on http://www.erictobia.com/2009/02/21/LoadADataTableWithLINQ.aspx Unfortunately, I need it in VB and it's using some constructs that neither I nor the automated code converters reciognize. Anyone out there know how this should be written in VB.Net? (the problem spot is the "select new {...") PeopleData...

How do you manage database connections and transactions across inserts in an Object Oriented way, using VB.net or C#?

I'm to the point now in my programming development that I'm trying to take advantage of Object Oriented Design instead of the basic behind the button procedural stuff I have been doing. In a current project I'm taking repeated, copy and paste sql server insert code and migrating it to classes with properties, methods, etc... One is...

VB.NET How can I check if a PictureBox contains an image?

I'm using VB.NET forms app and I need to check if a PictureBox currently has an image in it. How would I do this? Thanks ...

How can I create a WinForm app that just displays a NotifyIcon?

I am pretty sure I've done this before, but I cannot remember how/where I found out how to do this. I created a new WinForm application then dragged a notify icon onto my designer. I coded my desired functionality for the NotifyIcon's behavior inside the Form1.vb file. I think I remember something about adding a module to the project, ...

Programmatically derived Columns from flatfile source using SSIS DataFlowTask

this code using an OLEDB source will populate the OutputColumnCollection below it, the code using a flatfile source will not populate the OutputColumnCollection. Why not? Microsoft.SqlServer.Dts.Runtime.Application a = new Microsoft.SqlServer.Dts.Runtime.Application(); String SSISPackageFilePath; SSISPackageFile...

Elapsed Time with Environment.TickCount() - Avoiding the wrap

Does the absolute value protect the following code from the Environment.TickCount wrap? If Math.Abs((Environment.TickCount And Int32.MaxValue) - StartTime) > Interval Then StartTime = (Environment.TickCount And Int32.MaxValue) . . . End If Is there a better method of guarding against the Environment.TickCount() wrap? (This ...

Good way to convert VB.Net to C#?

Are there any good conversion tools out there to convert VB.Net code to C#? FREE developerFusion Telerik CodeConverter SharpDevelop PAID VBConversions Vbconversions VB.Net to C# Converter Download3000 VB.Net to C# Converter ...

Linq Select Compound From

Hi, I'm experimenting with linq compount selects. I find the following query not to return any element: Dim q = From s In d.GetChildRows("DossierSinistri") _ From i In s.GetChildRows("DossierIncarichi") _ Select s while the following does: Dim q = From s In d.GetChildRow...

I want to make an button that runs an action with the frequency from an number input in Visual Basic. How do I do it?

I want to make an button that runs an action with the frequency from an number input in Visual Basic .NET . How do I do it? Could someone point me out the syntax of such an action? @Jon, I think that's C++, I am talking about VB.Net. @Adam Davis, VB.Net 3.5 and all that I want to do is use an number from "NumericUpDown" to give a butto...

Easy way to remove warning messages after converting vb6 project to VB.NET

I have converted a VB6 project to VB.NET and am left with a large number of inline 'warning messages' such as "UPGRADE_WARNING: Couldn't resolve default property of object varJonSkeet" that I would like to get rid of. Is there a way to do this within Visual Studio 2008? Will it be easier to remove the warning messages with regex? I would...

automatically update my .NET application in Vista without admin rights

I know there have been a ton of questions about how to implement automatic updates in a .NET application, and I've probably read most of them. Unfortunately, none I have seen quite fit my situation as far as I can tell. I am trying to build a self-updating .NET application that will run in an environment with limited user accounts. ...

VB.NET How do I check the size and dimensions of an image?

Hi all, I'm reading in an image (jpg) using the code below and I need to check that the image is no bigger than 150 pixels by 150 pixels and is less than 25k, how should I do this? PictureBox2.Image = Image.FromFile(.FileName) Thanks ...

Access remote sql server using VB.NET

I've found a few examples of using vb.net to access an sql database, so far none of them have worked . They all involve using DataReaders. Maybe its the fact that the sql db is not on the same machine as the application. I was just wondering if anyone had a more comprehensive example of using VB.NET to access a remote sql server. Thank...

Datatable Compare Rows

I have a datatable object, which is populated from a webservice. Apparently, the web service just throws everything (data) back to me. The data which gets in my datatable looks like this: Dept Code Value Science ABC 5 Science ABC 6 Science DEF 7 Math ABC 3 Math DEF 9 English ABC 2 Engl...

Vb.net Pointers

Hi, What is the most similar thing in vb.net to a pointer, meaning like C poinetrs? I have a TreeView within a class. I need to expose some specific nodes (or leaves) that can be modified by external objects. ...

Subsonic 3 - Namespace hidden - Probably me!

Hi, It's Friday so I'm prob doing something stoopid here. In fact I'd put money on it. I'm playing around with Subsonic - got my feet happily into v2.2 but intrigued by v3 alpha Followed Rob's webcast, did as he did, watched T4 generate the code, went to use the new namespace and oh. No namespace. I can see the namespace Test.Data ...

How to add a FooterRow to a Gridview which has no value initially

Hi, I have a Gridview in which no rows populated initially. means i am not setting any datasource to gridview.I have to populate gridview by adding footerrow.I have given visibility of footerrow as true.So one error is coming as 'Object not set to an instance of an object'.what may be the reason for this? Can anybody help? Actually i n...