VS 2005 Option Strict On Conversion Verse Parse?

Feb 6, 2010

I decided to turn on "Option Strict" to see all my implicit conversions that were going on WOW there were alot.I am making changes when I discoverd the following problem:With Option Strict Off , everything works great

Option Strict Off
Dim glahh As Integer = (Me.subj_gla_txt.Text * 120%) / 100
Dim glah As Integer = (Me.subj_gla_txt.Text * 115%) / 100
Dim glal As Integer = (Me.subj_gla_txt.Text * 85%) / 100

[code]....

I get run time error can not convert string "" to Double at the last line That error I thought would indicate that Me.List2_glatxt.Text is empty? I dont see how it could be since that line in the code above as integer works?

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.net - Conversion With Union And Option Strict On?

May 20, 2011

i have a Problem with UNION for LINQ to SQL I have my LINQ query

Dim dc As New ContainerDB.DataClassesDataContext()
Dim test = (From container In dc.GetTable(Of tbl_container)() Where container.pkContainerID = iPkContainerID).Union( _
From containerHist In dc.GetTable(Of tbl_containerHIST)() Where containerHist.pkContainerID = iPkContainerID)

[Code]...

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C# - Allow Implicit Narrowing Conversion In For Each With Option Strict On?

Dec 1, 2009

VB.Net just showing its true colors again? When I turn Option Strict On, I am still able to do implicit narrowing conversions in a for each loop.For example, this code actually compiles;

Private Sub foobar()
Dim foo() As foo = {New foo}
For Each bar As bar In foo[code].....

From my understanding of Option Strict, this should not work.See here "Restricts implicit data type conversions to only widening conversions".My code above is a narrowing conversion, and so should be illegal.It will fail at runtime with an InvalidCastException.
C# does the same thing. Below is another implicit narrowing conversion.

private void foobar()
{
foo[] foo={new foo()};[code]......

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IDE :: Option Strict: Implicit Conversion Error?

Jan 11, 2011

Dim
Dr As
DataRow
Dr = DataSet11.Jobdata.NewRow

[code]....

With Option Strict On, I am getting an error with the above code, which is part of a procedure to add a new record in an 2003 access database table named "Jobdata". The items in Combobox3 is populated by another table in the same database, which has a Status field and a Key field. What I'm trying to do is to insert in the Status field in Jobdata table the correspoding integer value in Key to which ever
status is selected from the combobox.

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Option Strict And Data Type Conversion

Mar 2, 2011

Just wondering what the preferred/practised data type conversion technique is?

For example I recently enabled option strict, which in turn found quite a few errors in relation to data types, vb.net prompted me to use CType, which is fine.

However, I have seen other functions for data type conversion, such as .tostring, CInt , Convert, integer.parse and also Ctype.

Why would you use Ctype over the others?

I know its a pretty primitive question , but why do so many conversion methods exist?

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Option Strict - Error Option Strict On Disallows Implicit Conversions From 'Object' To 'XtremeCalendarControl.CalendarControl'

Oct 17, 2009

How can I get round this error: Option Strict On disallows implicit conversions from

[Code]...

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IDE :: Fix Option Strict On Implicit Conversion From Integer To String

Mar 20, 2011

I am a novice programmer to VB 2008 and I am trying to develop the following code for a game. When I build the following code, an error message appears:
Option Strict On disallows implicit conversion from integer to string.
Another error message
appears: Name FuchsiaTurnScoreLabel is not declared.

Option
Strict
On
Public
Class PlayForm
'Declare integer and decimal variables for calculations
[Code] .....

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Option Strict On Disallows Implicit Conversion From Integer?

Feb 5, 2011

Option strict on disallows implicit conversion from 'Integer?' to 'Integer', 'Integer' to 'String'

Here's my code which is just a stub. I am working off of some example code and applying it to my own project:

<System.ComponentModel.DataObjectMethodAttribute _
(System.ComponentModel.DataObjectMethodType.Select, False)> _
Public Function GetTrackActivitiesByParams(ByVal ActivityKey As Nullable(Of

[Code]....

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Option Strict On Disallows Implicit Conversion From Long To UInteger

Nov 20, 2011

[code] I get the error message of "Option Strict disallows implicit conversion from Long to UInteger." [code] I dimensioned each variable as a UInteger and not a Long, the values for both X & Y are well below the maximum values of a UInteger as far as I can tell (Data Types Summary). [code]

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VS 2005 Option Explicit On; Option Strict On

Feb 24, 2010

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;

[Code]...

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Tools To Convert Option Strict Off Code Into Option Strict On?

Mar 28, 2010

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.

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Option Strict On - Error On All The ".Cells" Lines Saying Option Strict On Disallows Late Binding

Sep 7, 2010

I turned Option Strict On and i get an error on all the ".Cells" lines saying option strict on disallows late binding.

a = 1
b = 3
c = 2
d = 1
With oSheet

[CODE]..................

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Linq And Option Strict - "Option Strict On Disallows Late Binding"

Jun 30, 2011

[Code]...

I really prefer to keep Option Strict On. the proper way to do this?

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VS 2005 : Option Strict Disallows Operands?

Nov 21, 2010

When I try to write the following code, I get error message:Option Strict Disallows Operands of Type Object use Is

HTML
If dtrow.Item("BathNew") = 0 Then
dtrow("BathNew") = dtrow.Item("BathsTotal")

when I use Is I get the error message:Is requires operands the have reference types

If dtrow.Item("BathNew") Is 0 Then
dtrow("BathNew") = dtrow.Item("BathsTotal")
End If

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Read The File - Error "Option Strict On Disallows Implicit Conversion From String To Char"

Mar 9, 2012

When I try to read the file, I am getting an error = "Option strict on disallows implicit conversion from string to Char"

[Code]...

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Option Strict Is Off, Compile Fail With "Option Strict On"?

Apr 13, 2011

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?

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Set Option Explicit And Option Strict On A Project / Solution Level?

Feb 22, 2011

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?

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Use Of Option Strict And Option Infer

Feb 22, 2011

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.

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VS 2005 - Build Verse Publish Compile

Dec 9, 2009

Explanation of Build verse Publish Compile in simple english. I have my first appication I want to now deploy. I have been reading about Clickonce and it looks like a nice solution for my project. I actually tried it already but I recieved an error message "forbidden" I think there is an issue with my hosting site? Anyway I have been reading and am a bit confused to these different terms. Is build what I would use if I want to add-in a set-up / installer package with program with an exe file, sort of like the traditional way of handing someone a disk and they install it on there machine? Publish appears to what is used for the click once, but I dont think thats the only thing. I can publish to a disk? It looks like I can publish to my own computer until i figure out my website issue and test the program from there?

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How To Do This With Option Strict On

Nov 25, 2010

Dim frm As mshtml.HTMLFormElement
Dim sel As mshtml.HTMLSelectElement
Dim hi As mshtml.IHTMLElementCollection
Dim inp As mshtml.HTMLInputElement

[code].....

Looks to me that childnodes object has a more specific type. But what? Not ihtmlcollection. The type support some item interface.

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Option Strict - On Or Off?

Dec 7, 2009

Title says it all really, should I have it off unless I'm having an error, or simply have it on all the time?

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Option Strict On - Is Better?

Jun 28, 2010

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.

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'option Strict On' Insists On This But Can't See Why?

Jan 25, 2012

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)

surely the checkbox.checkstate is Booleean?

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.net - Use Use 'strict Off' Option In Projects?

Jun 30, 2009

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'?

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C# - Set DataGridViewCell.Value With Option Strict On?

Oct 21, 2011

How to test for DataGridViewCell.Value with Option Strict On?

If DataGridViewCell.Value = "some value" then

Gives the error:
Option Strict On disallows operands of type Object for operator '='. Use the 'Is' operator to test for object identity.

EDIT:

The Solution is:

If DataGridViewCell.Value.ToString = "some value" then

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LINQ With Option Strict

May 26, 2012

I'm facing a trick issue with LINQ. I generate the above code:[code..]

Everything is running well if I turn off Option Explicit. When I turn it on, compiler is showing me a meessage: Expression is of type 'Object', which is not a collection type. Referencing to lResult variable.

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Option Strict And DataRow Value

Jun 14, 2011

If a field called X in a datarow called R is an int32 and Y is an int32 how can I make this statement work:
r!x += y
with option strict on.
Error 8 Option Strict On prohibits operands of type Object for operator '+'.

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Option Strict And DefaultValueAttribute?

Nov 24, 2010

Having just spent the past several hours trying to work out why my Xml Serialization code was not working. Consider the following:

<DefaultValueAttribute(False)>
Public Property UserName() As String

Why is this allowed regardless of option strict being on (or not)?

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Option Strict On By Default?

Mar 1, 2011

Whenever I created a new VB.NET program I must go into project's proerties and set 'option strict' on. Can I do that once so it is a default for every time I create new project?

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Option Strict On LINQ

Dec 28, 2011

i'm encountering the following problem. I recently activated 'Option Strict On' and now I get an error in my LINQ query. From e As TEnum returns the following error: Option Strict On disallows implicit conversions from 'Object' to 'TEnum'. [code]

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