Is it possible to read an excel range when option strict is on?my test code works with Option Strict Off but 'Disallows implicit conversions from Object to 2 dimensional array of object' when Option strict is on!Is it possible to load a typed array from the object without looping round all of the elements? [code]
View 4 RepliesI am trying to just write something to a cell in a sheet and I am getting the error message:
Exception Exception from HRESULT: 0x800A03EC Stack Trace: at System.RuntimeType.ForwardCallToInvokeMember(String memberName, BindingFlags flags, Object target, Int32[] aWrapperTypes, MessageData& msgData)
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How do I use Excel Automation in VB.NET? Please remember to mark the replies as answers if they help and unmark them if they provide no help. Welcome to the All-In-One Code Framework!
View 1 RepliesHow can I get round this error: Option Strict On disallows implicit conversions from
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I'm writing VB code in Visual Basic 2008 Express and can't seem to figure out how to create a new instance of Excel with VB code. The most common answer appears to be setting an object variable to 'Excel.Application', but that gives an error (Type 'Excel.Application' is not defined).
View 1 RepliesThis seems like is should be simple but for the life of me I can't seem to get it. I am using VB.net.I am importing a text file into Excel. Then I want to select everything and sort it based on a cell (A) in this case. So here is what I have so far.
Code:
xlApp.Workbooks.OpenText(sDump, , 1, , XlTextQualifier.xlTextQualifierDoubleQuote, , , , True)
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I have an application that opens and saves spreadsheet via interop.At start up I set
Code:
_excelApp.Visible = false;
_excelApp.DisplayAlerts = false;
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I dont know why its giving me an error when i run this code...
Code:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
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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.
View 3 RepliesI 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
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I really prefer to keep Option Strict On. the proper way to do this?
I am using VB 2008 and office 2007. Option Strict On it gave the error in the flowing statemens:[code]
View 6 RepliesI 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 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;
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The software company I work for offers data conversion as a service for new clients who have previously used other similar software. I've written a VB.NET application to automate common conversion operations, and have separate logic between known vendors.particular file layout has become rather common, but due to the nature of how this particular competitor's application stores information, certain fields mean one thing for one client, and another for a different client.Certain elements within this vendor's format change every time, so I've written the application to account for that. Because some data fields mean different things to different vendors, I have to change my mapping code every time. This wasn't an issue when I had one of these every six months or so, but these are becoming much more common and I would much rather find a way to further automate this process.
View 2 Replies1. 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.
I am trying to automate this website but my application does not find the username, password textboxes or the button. this might be an iframe in the website, I don't know
what I am trying to do is:
find the username
pop it in
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How do we automate the process of deriving an Interface from our already-designed class?In other words, I wrote in completion my entire class and now desire to automatically construct its interface. EG: Say my class's filename is "Car.vb", I now desire "ICar.vb" derived from the class "Car" that I've written.
View 9 Repliesthe create object command is not responondingi try createobject("Excel.Application") or ("Word.Application") but nothing happen.i have office 2007 i have added the references Microsoft Excel 12.0 object library and Microsoft Word 12.0 object library. I have added Imports Microsoft.Office.Intercop
View 1 RepliesI have a VB 2008 Forms application which does Powerpoint automation -- I am opening owerpoint in a minimized window from within my app and am trying to periodically put update messages in a textbox on my main form while the automation is running (it takes a few minutes to complete), but my form window does not want to show these messages until the powerpoint operations are finished. It seems as if I need to force a window refresh or something on my windows form, but I'm unclear how to do that. Below is some code that I'm using that illustrates what I'm trying to do. When I run it, "Step One / Step Two / Step Three" do not show up on my textbox until after the Powerpoint automations are over.
View 3 RepliesI play Lord of the Rings Online and tried to use sendkeys to send some basic automation commands.Unfortunately it doesn't seem to get the keys I'm sending
AppActivate "Lord of the Rings: The Mines of Moria"
sendKeys (" ")
does nothing.
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I created a simple VB 6 executable that runs fine on my computer (Windows 7), but when I deploy it to another Windows 7 PC or a Windows 2003 server, I get the error"Runtime Error 430: Class does not support Automation or does not support expected interface"
View 12 RepliesI want to use VB .Net to remove a table from an EXISTINGpowerpoint Slide Shape and replace it with a chart withoutdeleting the shape or adding a new shape. Presently using
Copy() and Paste() to place Chart in new Shape.
Dim frm As mshtml.HTMLFormElement
Dim sel As mshtml.HTMLSelectElement
Dim hi As mshtml.IHTMLElementCollection
Dim inp As mshtml.HTMLInputElement
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Looks to me that childnodes object has a more specific type. But what? Not ihtmlcollection. The type support some item interface.
Title says it all really, should I have it off unless I'm having an error, or simply have it on all the time?
View 10 Replieswhat 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.
I am having tremendous difficulty getting word automation to insert a page break in my document. The app is generating letters in word and saving them....the code below shows where I am writing the first page (str.tostring) then all of the code after that are the various ways that I have tried to insert a page break so that it will go to the second page and I can unload information into the second page of the document. [code]
View 1 RepliesI 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?
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'?
View 8 Replies