VS 2010 Best Practice To Clean Up An Object?
May 15, 2012I've got a class that looks like this
[code...]
What is the best way to "clean up after myself" when I am done with this newFS object?
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How To Clean Up Sr Object
Jun 15, 2010[code] If there is an error inside the Using block how do you clean up the sr object? The sr object is not in scope in ErrHandler so sr.Close() cannot be called. Does the Using block cleanup any resources automatically even if there is an error?
View 3 RepliesVS 2010 Clean Up XML Hack?
May 7, 2010I need to simply identify if a particular tag occurs in an XML document. At this point my XML solutions, much like my regex solutions, are based on limited knowledge and are far from elegant. Is there a better way to achieve the following:
For Each e As System.Xml.XmlElement In xmldoc.GetElementsByTagName("stat")
parse = False
Next
VS 2010 - VB Training - Practice Exercises To Develop Skills
Mar 14, 2011Can anyone suggest a book or a direction for some training other than bombarding you guys with posts all the time? I'd like something geared more for teaching than for just reference. Books really aren't cheap and I'd like to just buy one if possible. Free website tips and training would be nice too. I've built a calculator for fun and my project will be more database oriented but I'd like to build more form applications.
View 3 RepliesVS 2010 Object Rotation And Move Object With Arrow Keys?
Feb 8, 2011I want to learn how to rotate an object by direction and speed and also how to move an object using the arrow keys?
View 2 RepliesVS 2010 Search Listview: Object Reference Not Set To An Instance Of An Object?
Jan 18, 2011I'm using the following code to try and search a listview (I got it from msdn):
Dim atem As New ListViewItem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)
If atem IsNot Nothing Then
ListView1.TopItem = atem
End If
Then I got the " Object reference not set to an instance of an object" error highlighting the following line: ListView1.TopItem = atem So then I tried this:
Dim atem As New ListViewItem atem = ListView1.FindItemWithText(TextBox2.Text, True, 0, True)
If atem IsNot Nothing Then ListView1.TopItem = atem End If it still isn't working.
VS 2010 Structure Of Lists - Object Reference Not Set To An Instance Of An Object
Oct 16, 2011I am struggling with the following - I try to add a value to a list, where the list is defined in a structure.
[Code]...
VS 2010 - Error : Object Reference Not Set To An Instance Of An Object
Jun 22, 2012I get error (Object reference not set to an instance of an object)trying to read a reg key, it stops after the first msgBox which shows MyRegKey value it shows a blank value
Dim MyReg As Microsoft.Win32.RegistryKey = Microsoft.Win32.RegistryKey.OpenRemoteBaseKey(Microsoft.Win32.RegistryHive.CurrentUser, (OldPCTxtBx.Text))
Dim MyRegKey As Microsoft.Win32.RegistryKey
[code]...
VS 2010 : Error: Object Reference Not Set To An Instance Of An Object
Nov 18, 2011I have a treeview with a contextmenu. I'm trying to disbable specific items in the contextmenu when the user doesn't have a node clicked, but each try gives me the same error: "Object reference not set to an instance of an object."I tried several methods in the Mouse_Down-event (IsSelected, etc), this was my last:
If .Nodes.Count > 0 Then
If .SelectedNode.Text <> "" Then ' <<< this line is highlighted
enable_expl_mnu() ' enable the contextmenu
[code]....
VS 2010 Error , Object Reference Not Set To An Instance Of An Object
Jul 9, 2010I get the error, Object reference not set to an instance of an object., on:
vb
For Each comboItem As String In My.Settings.ComboBox1
That code is in:
vb
Private Sub Me_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Me.Load
For Each comboItem As String In My.Settings.ComboBox1
[code]....
I am trying to get it to load those settings when the program loads up, VS does not report that program till i attempt to run in debug. Before the program is even loaded that happens.
VS 2010 Object Reference Is Not Set To An Instance Of An Object
Mar 14, 2012I've created two Forms of which second one is opened with ButtonClick event with statement: Form2.Show(). Everything worked great until I declared some variables directly under Public Class Form2 (actually they are inputs in TextBoxes of a user which are placed on Form2). Error is: InvalidOperationException was unhandled - Object reference not set to an instance of an object.
View 10 RepliesVS 2010 Object Reference Not Set To An Instance Of An Object?
Jan 4, 2012i got a html to pdf conversion source using the opensource itextsharp library from the[URL]..I copied the code exactly in vb.net 2010 after referencing the library and it gives the 'Object reference not set to an instance of an object' error in the bold line... couldnt find a solution to it..
[Code]...
.net - Best Practice On IF/ELSE Statement Order?
Aug 20, 2009Which is a better practice? (I'm coding in .Net if that makes a difference)
IF condition = true THEN
...true action--even if rare...
ELSE
[code].....
Best Practice For A Search SQL Query?
Jul 1, 2009I have a SQL 2008 Express database, which have following tables: [code] Now I need SQL query to search for word (i.e. Beyonce Halo Music Video) against these tables.
-For Title exact phrase will get 0.5 points
-For Description exact phrase will get 0.4 points
-For tags exact phrase will get 0.3 points
-For title all words will get 0.2 points
-For description all words will get 0.2 points
-For title one or more words will get 0.1 points
-For description one or more words will get 0.1 points
And I will show these videos on basis of points. What will be the SQL Query for this? A LINQ query will be more better.
Best Practice For Location Of A Query
Feb 4, 2011I'm writing in VB.net 4.0 and using SQLExpress 2008 R2. In a DataGridView, I would like to display (no edits) data coming from multiple tables in my database.A second Grid (different data, still multiple tables) will need to allow editing and saving of data.I understand creating a View in the database and using that as a source for the DataGridView.I also assume that there are ways to query and create a data source for the Grid totally within my VB program.Would someone explain the consequences and implications of the different approaches?
View 2 RepliesBest Practice For Saving Images
Apr 9, 2009I am allowing users of the admin panel of my website to upload photos, its a simple process where I check the validity of the image and then save it to a folder, then I also have to record a couple of database records for that image to be able to retrieve it later, my saving function is as follows...The function that uploads and saves the picture in the folder with a name i construct in another function: [code] and the function that creates the database record for that same picture: [code] Now I know that what I am doing is full of best-practices violations, so please point me out to what I should do, keep in mind that the users might delete the pictures later, so I wanna make sure that I can delete the database and file of the picture, and the whole issue of the path.
View 2 RepliesBest Practice While Working With Dataset?
Jun 25, 2009What is the best practice while working with dataset amd datatable.Actually I have seen that very few information is online when it comes to working with multiple base table.Suppose there is one master table and a details table. The need of MASTER table is suppose just one column (say ProductName), while the application mainly works with the DETAILS table.My idea, we use JOIN to create a single datatable and work with it. But am surprised how little information is available when it comes to working with Multiple Base Table and the limitation of SQLCOmmandBuilder in such situation.
View 15 RepliesInternet Connection Best Practice?
Dec 8, 2010What is the best practice way of detecting internet connection?
From Windows Vista onwards, a status is set in windows that is displayed in the task bar. However, I cannot call this function/api/whatever, since some of the client pc's are still on xp, and only due for upgrade in 18 months.
so do i use and request something like [url]... to try and see it it works, and on the catch block set the return value to false, or is there another way?
Second part of this question, If no network connection is available, I can use [url]... to dial a connection. Will this use internet explorer's settings, or dial the connection marked as default in DUN?
Public Sub Life(ByVal AnyEvent As Object) Dim myNewLife As New Life Dim Happiness As New Collection Happiness.Add(AnyEvent) myNewLife.Experience(Happiness) End Sub
Set Variables To 'Nothing' Is A Good Practice?
Jan 27, 2011If I got Dim myRect As Rectangle = New Rectangle(0,0,100,100)Is it necessary or just fine to later do this: myRect = Nothing Or it isn't necessary?IF it is necessary, are there other cases it isn't for my variables?
View 2 RepliesWCF Data Objects Best Practice
Mar 24, 2011I am in the processing of migrating from web services to WCF, and rather than trying to make old code work in WCF, I am just going to rebuild the services. As a part of this process, I have not figured out the best design to provide easy to consume services and also support future changes.
[Code]....
Best Practice Example Of An MVP Implementation Of Unit Testing
May 4, 2009Can anyone point me towards a complete scenario using MSTest,vb.net, with or without mocks,MVP (supervising controller)
View 1 RepliesBest Practice For Sharing Variables Across Forms?
Mar 27, 2011I need to share variables across two forms in vb.net. One of them is the main form and the other is a child form.
Create a static/shared variable in one of the forms and access it in the other forms via:
Form1 frm = new Form1(); //creating object of parent to access shared variable
frm.a = "abc"; // passing value
Send an instance of the main form to the child form when creating the child form. The variables can then be accessed via a property function. Create global variables in a module. This seems like the easiest option, but I doubt it is the best option.I also read something about delegates and events, but I don't know how to implement this.
Is Using GoTo<label> ALWAYS Considered Bad Practice
Aug 23, 2011I'm just wondering why using GoTo<label> is so frowned upon?I'm learning VB, and I want to develop good habits as I go. One thing I don't entirely understand, is why everyone avoids GoTo like its the plague (except in error handling...). I feel like GoTo could be useful in some situations.
View 1 RepliesRecommended Practice Is For Importing Namespaces?
Mar 27, 2012Just wondering what the recommended practice is for importing namespaces. Are you always better importing the namespace like the fisrt snippet of code, or are you better to type the full namespace inline with your code.
I like both methods; the first is tidier and takes less code, the second can identify exactly where your accessing some logic from which can provide some clarity when looking over the code. Just wondering if there are pros/cons for either or if this is just a personal preference, currently I use a combination but would like to keep consistant.
[Code]...
VS 2005 - Best Practice For Comparing Strings
Jan 21, 2010Below two which is the best practice to compare strings...
If "A".ToLower = "a" Then
'....
End If
If String.Compare("A", "A", True) = 0 Then
'...
End If
What Are Performance Consequences Of Questionable Practice
Aug 29, 2011I come from a C# background so I'm not quite up to snuff on my VB just yet.I've run across this practice all over our code base and it is never used for chaining.I am wondering what performance consequences (if any) this might create. [code]
View 2 RepliesAsp.net - Find A Clean API For VB Development?
Feb 18, 2010I am completely new to ASP.NET programming, and was asked to work on a small project involving ASP.NET, VB (which I am new to as well) and Microsoft SQL Server 2005.Being used to php/java I was hoping to find some kind of similar API to php.net and the javadoc. It would be very useful to have as I would prefer to work with a text editor, instead of using DreamWeaver or Visual Web Developer.In the project I basically only need to use ASP.NET to read from a SQL 2005 database and write to JSON files. where to find a clean and decent API to work with?
View 4 RepliesClean Up A String In Program?
Oct 8, 2010How to clean up a string in Visual Basic .NET? I'm creating a string as a report with line breaks. However, the string is built based off of screen scrapes from a TN3270 emulator. The string is saved successfully with all of the data I require, but those annoying rectangle symbols show up once I send it to a notepad text file. Do you know anyway I can strip those out and clean up the output?
View 1 RepliesClean Up After StreamWriter During An Exception?
Sep 3, 2009I'm trying to clean-up after an exception, and I'm not sure how to handle a StreamWriter.[code]If somethingBad1 throws an exception, I don't need to do anything to sw; however, if somathignBad2 happens, sw has already been created and I need to close it. But How do I know if sw has been created or not?
View 3 RepliesClean Up Email Pop Message?
Dec 11, 2011I tried implementing the below code for receiving emails. I got it working but the email message format needs to be cleaned up. My objective is to extract the http urls. I listed 2 examples of email message output that I got. [code]...
View 1 Replies