Option Explicit Off, Option Infer On, "Name Xxxx Is Not Declared"?
Mar 4, 2009
Using VS2008, targetting framework 3.5, trying to update some VB4 code. Yes, VB4.I have a bunch of legacy code I'm trying to update, and I had the idea of trying to work through it by executing the old code, working out what was causing each error as I came to it, solving the problem, and then moving on.In order to do this, I have sinned and set Option Strict Off, Option Explicit Off and Option Infer On.Yes, I'm going to hell for this.Problem is, I'm still getthing errors that various things haven't been declared.All of these the items showing errors are in the form: itemName(obj)Is my problem that the compiler thinks that these are method calls for methods which haven't been declared?PS: For anyone wanting to tell me not to use these settings, I already know
When creating a T4 template in VB.NET, how do you specify Option Explicit, Option Strict,and Option Infer settings? There's some sort of <#@ #> tag for doing this, but I can't find it.
I really like the coding speed that vb.net provides, but I don't like the possibility to forget to declare variable types, return types of functions, etc. and that is why in each class I use[code]..
Is there a way to define those two options on the project/solution level?
what does these two code means in vb.net: Option Explicit on Option strict on i think option explicit means the compiler is not going to do any kind of conversion and i need to do all of them by the code;also it becomes case sensitive i.e;
1. I have read that keeping Option strict on and Option infer off is good practice and will insure your code is tight and properly written. I would like input regarding this, pro's and con's from those who are in the know.
2. Having said that, I have set Option strict on and Option infer off in an existing program I wrote (that was working perfectly mind you) with them off and on respectively. I went through and cleaned up all the errors on the 'need AS' and casting of variables, but one is leaving me a bit put out.[code]
I have also read where using My.Computer.System.Directory.GetFiles() instead of System.IO.Directory.GetFiles() is probably not a good thing, but when I change to this I get no error, but also no dataI am thinking I should stay with the strict on and infer off but am really slogging through getting this code correct.Running Win7 on Dual Quad Core XEON Intel Extreme with 8Gb RAM.
Possible Duplicate: Best Practices: Option Infer What is the best way to mix VB.NET's Option Strict and the new Option Infer directives? I am developing a old solution, that was translated from VB6 to the VB.NET.Actually, the default options in files are
Option Strict On Option Explicit On
I want to use LINQ, and found that is easier to use also the Option Infer On. Less to write, less (so, easier) to read.However, a (conservative, from my point of view) part of the team keeps the Option Infer Off and insist do not use it at all, without explicitly explain the causes.In your opinion, what are the "dangers" of using Option Infer On, along with other two options (Strict and Explicit, both On)?
What do you feel are best practices for the use of Option Infer in your projects? In Visual Studio 2008, Option Infer is a directive that allows the compiler to infer the datatype of a declared variable by looking at what is assigned to it. This is a key feature in VS2008 and is used extensively with LINQ statements and queries. However, turning on Option Infer may create pitfalls for future maintenance programmers.
Will that detect whether the integer should be int64 or int32? What about if we run the program twice. Once we use small numbers and latter we'll use big numbers?
Let's look at this for example: vb.net Dim vector1 As List(Of Int64)Dim vector2 As List(Of Int64) vector1.Sort()vector2.Sort(Function(x As Int64, y As Int64) As Int64Return y - x
What about if I do: vb.net vector1.Sort()vector2.Sort(Function(x As Int64, y As Int64) As Int64Return y - x
the combo box style 1 has both the drop down option but also a manual entry option. I need to know how to code it so that when you manually enter data, it takes that data and places it in a text message "The shipping charges for "data" is $15" displaying in a text box. Shouldn't be hard but have developed a mind block.
I want my console application to be able to do one function I have when you click one option on the windows context menu, and another function when you click another option.
I am writing a text editor program and I have written the new, open, save as, exit menu items but I am struggling with writing the save option.Now I have created the menu itself (well vb did, I just used insert standard items) but how do I code up the save menu option so that it updates the current document or if the documnt has not yet been saved bring up the save file dialog.Here is the code I have so far
Public Class Main Private Sub NewToolStripButton_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NewToolStripButton.Click, NewToolStripMenuItem.Click[code]....
I know I have some finishing touches such as messages and error handling and stuff but at the moment I want to get all the basics working,I think the save menu option is all I am struggling with at the moment.
I have to take over a project written in vb.net, which contains more than 400k lines of code written in option strict off mode. I want to build it under option strict on first before I do anything else -- which maybe converting it into C#. I found there's thousands of lines of code raises compilation error, mostly are about implicit type casts. Is there any tool would help to make it compile under option strict on mode if I don't want to correct every single line manually? Because it's really painful to add CStr/CInt invocation into every line of Code myself.
I just put all my aspx files on the local folder and made a website in IIS7. I added a virtual directory to it and then converted the virtual directory to application. The website loads properly but when i click the link that calls my application i get this error message.
Description: An error occurred during the parsing of a resource required to service this request. review the following specific parse error details and modify your source file appropriately.
Parser Error Message: Could not load type 'XXXX.xxxx'.
The error line in code is this -
Line 1: <%@ Master Language="VB" Inherits="_XXXX.xxxx" Codebehind="XXX.xx.vb" %>
I have inherited a VB.NET application that I need to compile so I can run dorkumentation on it. I first received "Option Strict On disallows implicit conversion from x to y" errors, so I turned off the Option Strict option in the Project file.
So why do I still fail with the same error message?
I have two comboboxes which are related to each other. When a make a choice in the first there are different choices possible in the second. So far so good. But is it possible to remember the second choice when i change the first? the program should select the the option in the second if possible or other select the first option.[code]
I'm creating a Setup Project (in Visual Studio 2008) for VB.NET application, everything works fine but I want to ask how to put an option for shortcuts. I mean, i know how to put shortcuts to desktop and start menu but I want some kind of checkbox where you'll have an option to put those shortcuts or not to?
what do you thinkg about comment below? original article url is also suggested to read.I didnt get why my code will be faster if i use it on. anyone has good knowledge about it?
Although Visual Basic .NET allows you to perform implicit type conversions and late binding, you should avoid these practices. Implicit type conversions and late binding may lead to severe performance problems, runtime errors, code that is difficult to read and maintain,and sub-standard programming practices.Many VB.NET professional programmers believe that leaving OPTION STRICT OFF by default was perhaps Microsoft's worst decision in the VB.NET implementation. Use OPTION STRICT ON.
When user right clicks on any file/folder in any drive; I want to show my own option there like--- copy this file ushing rushcopy when user clicks this my own exe should be able to capture this arguments of filepath and should run rushcopy.exe with it...
i want to make a custom instaloler for my ProjectI made a web browser and well.I want to add tabs Make it so you do not have to click go you can hit the return Key falso i want to make it where they have to enter a free 10 diget code i make and give out. iks this possible?one last thingi cannot figurel out how to print save or open a Text Box that i want to make kinda my own simple version of the notepad?sorry so manny questiuon kind new but kinda notIf you want one of the webbrowsers i made email me or tell me i made a couplewow i feel stupid is there anyway to have bookmarks option fr people
I have an old programme that was written with 'option strict off' I have been steadily working through it mainly sorting out casting issues but have come up against some that I dont understand.for instance I have a checkbox called tickbox
dim Tickbox as new checkbox
later in the code
dim blah as boolean = Me.Tickbox.CheckState
but option strict insists i cast it as a boolean
dim blah as boolean = CBool(Me.Tickbox.CheckState)
For debugging purposes, is it possible to get the value of Option Compare at runtime?
(I am working on a legacy Windows Forms application that uses InStr with the first parameter as String (three parameter version of Instr), without the third parameter that is then determined by Option Compare. Option Compare Text supposedly makes InStr case-insensitive; the default is Option Compare Binary.)
Do you use 'strict off' option, 'explicit off'? Or may be 'strict custom' and some other options like 'Implicit type. Object assumed', 'Late binding', 'Implicit conversion'?
I need to add an option of Changing Password in a simple one file and one form based Win Form Application. Any advice/guidance in this regard other than using a single CONST PW in the code being unable to be changed later on?
