Office Automation :: Cells Property - Early And Late Binding
Mar 1, 2010
I've been aware for some time that the Cells() property is early bound but the Cells.Item() property is late bound. In VBA this all works seamlessly apart from the fact that we lose intellisense in the VBA IDE in the latter case:
Code:
'VBA code
Cells. '<---- we get intellisense
Cells(1). '<---- we do not get intellisense
However, in VB .Net with Option Strict On this means that we have an extra consideration in that we have to explicitly convert to an Excel.Range if we want to set the range reference to a range variable:
Code:
'VB .Net code
Option Strict On
Imports Excel = Microsoft.Office.Interop.Excel
'
'
'
Dim oApp As New Excel.Application
[Code] .....
I'm comfortable enough with this because I'm aware of it and it is trivial to handle by explicitly converting to an Excel.Range. We also had a pretty good discussion about the Cells property a little while back in the VBA board which looked at some of its inner workings. My question is to dig a little bit deeper into the way that this has been implemented. I'm trying to get a better understanding about the reasoning behind the Cells.Item() property returning an Object rather than a Excel.Range?
View 19 Replies
ADVERTISEMENT
Oct 12, 2009
here you are one of the problem I had in my past few yeas spent in automating office processes with vba.If you develop an application and you don't know which office version is installed on the pc on which your application will be installed you can have problem with references.
[Code]...
View 5 Replies
Apr 25, 2011
i am having some doubt & problems.
(1) if multiple versions of MS/office is installed in a computer & if i use late binding which version office instance will be rendered by the system.
(2) in the same way if i early binding then which version of office instance will open.
still be more clear i use late binding code. but here how to set the number format of the cell to text.
View 6 Replies
Aug 19, 2009
I started programming in VBA, then graduated to VB6, and I am now using VB.NET 2008 Express.I have read, in the various posts, that I should keep Option Explicit and Option Strict both on, in order that I use correct VB.NET code and not VB6.I am trying to do that but am totally confused with the results of one of my programmes that was running perfectly with Option Strict off, but now advises:Option Strict On disallows late binding. To me it appears that I am using early binding, but to be honest I am not clear on the binding situation. I have checked through a number of google items, and a number of this Forum's items without seeing the light.[code]
View 8 Replies
Sep 5, 2011
i have this code:Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]...
Error 1: Option Strict On disallows late binding.Im using visual basic 2010 express on a gateway laptop thats running Windows 7 OS How do i resolve this error?
View 2 Replies
Apr 9, 2009
I have a listbox and it it I am showing numbers.It should look like this (line by line) 1,2,3,4,5,6,7,8,9,10,11.....but is is showing it like this 1,10,11,...2,20,21...3,30...ow can I make it that it will show it in number order 1,2,3,4,5......
View 5 Replies
May 9, 2012
I'm trying to call this code in VB.NET with "option strict on":
Dim application As word.Application = New word.Application
application.WordBasic.DisableAutoMacros(1)
The WordBasic object is dynamic, there is no type library available.Now the compiler will complain, because late binding is not allowed.
View 1 Replies
Sep 14, 2010
where can i find code example for late binding automation?
View 2 Replies
Apr 3, 2012
Cells.Find(What:="Reaction", After:=ActiveCell, LookIn:=xlValues, LookAt _
:=xlPart, SearchOrder:=xlByRows, SearchDirection:=xlNext, MatchCase:= _
False, SearchFormat:=False).Activate
View 1 Replies
Jun 21, 2011
I've an excel sheet which is populated with thousands of rows of data, is there a way in vb.net I can pick out only selected cells/rows without having to go through every row?
View 2 Replies
Dec 14, 2010
I have a Excel file and I want to write some code to adjust it. What I want like this: Each cell in column E, if E6 and E9 have the same value, ROW9 should become ROW7 (old ROW7 became ROW8), and then E6 and E7 merged.I knew how to merge cells but I didn't know how change the whole row.
View 2 Replies
Feb 24, 2011
I've searched for this everywhere, but can't find a solution after trying for two days. What I want to accomplish is creating a table in Word (n-rows, and 3 cols,) (which I successfully have) and for each row that has a new date, I want to merge all three column cells just for that one row with the date. For every other row, above and below, I still want to preserve the 3 columns structure. What happens with the Merge() method is that all the rows merge, not just the row I'm currently on. I did a macro and noticed that there is a Selection.MoveRight() option I can do, but I can't yet figure out how to put all these statements together to accomplish this. When I do the MoveRight, trying many variants like the following:
oDoc.ActiveWindow.Selection.Tables(1).Range.Cells(wordRowIdx).Select()
oDoc.ActiveWindow.Selection.MoveRight(12)
I get a member cannot be found for the first statement.
View 3 Replies
Nov 27, 2011
I have a problem involving late binding, and I absolutely cannot for the life of me figure out how to fix it. I have spent hours researching the problem to no avail, so I am turning to stackoverflow as a last resort.The problem is pretty much this: I am creating a grocery list application. I have a class named Item which stores the name, price, quantity, and description of an item on the grocery list. I have a module named ListCollection which defines a Collection of Item objects. I have created an Edit form which will automatically display the currently selected ListCollection item properties, but whenever I attempt to fill the text boxes, it tells me that Option Strict disallows late binding. I COULD take the easy route and disable Option Strict, but I'd prefer to figure out what the problem is so I know for future reference.I shall paste pertinent code here. (Late binding error is in EditItem.vb)
[code]...
I have tried declaring a String variable and assigning the Item property to that, and I have also tried grabbing the value directly from the List item (not using the Get function), and neither of these made a difference.
View 1 Replies
Oct 28, 2009
Difference between Early and Late Bindings.
Example of Late Binding:
If
sender IsNot Nothing AndAlso TypeOf sender Is Values Then
receiveobj = CType(sender, System.Object)
a1 = CType(receiveobj.a1, Int32)
End If
How do I change this into the prefered Early Binding?
View 3 Replies
Jun 17, 2009
Error: System.Runtime.InteropServices.COMException (0x800A03EC): Exception from HRESULT: 0x800A03EC is thrown after execeution of Microsoft.Office.Interop.Excel.ApplicationClass.set_Calculation(XlCalc ulation RHS)
Out of nowhere COM start throwing exception when I set change excel's Calculation property. Line of code that followed set_Calculation was.Workbooks._Open. This used to cause exception every second try. Than I changed order, first open workbook and than set calculation property. Amount of exceptions start decreasing than I added thread.sleep(200) and exception is not thrown anymore. This happens only on one some of user machines while others are fine.Application itself is single threaded so this delay should be of importance if and only if set_Calculation is executed asynchronously. What I'm missing here?
[Code]...
View 6 Replies
Jul 23, 2009
I've automated quite a bit with excel and every so often one of these really annoying glitches pops up.I'm using Office 2003, all with latest service packs and everything, and basically I usually end up creating a lot of applications which automate excel, processing database information and exporting it etc, etc, etc.
I currently have finalized this most recent export process, which exports a moderately sized table into excel for the user to work with, but I wanted to adjust the printing area appropriately.SO, I set the PrintArea to the A1:K47 string, I set the FittoPagesTall/Wide to 1 and the Orientation to Landscape, and all of this is perfectly functional from my 2008 .Net 3.5 application. But in the open application window of the file i'm automatically creating, the page divider lines still show 4 pages of data. Now, I said to myself, i know that in the Page Setup Dialog I can set "Fit to Page" and it automatically adjusts the zoom factor (scaling) to fit the print area onto 1x1 pages.
The only property in the WorkSheet.PageSetup that appears to do this is the ChartSize property, but when I step over that line in the Application I'm debugging, I get the Exception:"Unable to set the ChartSize property of the PageSetup class"Now the only thing i've seen online about this error from Microsoft says it could occur when a printer isn't installed. That is not the case here.
I further looked up in the property and it said something about only being applied to "Chart Sheets" but when I try to use the workbook.worksheets.add() method witht the Type set to xlChart I get a com object disconnected from RCW error.NOw, I can manually go into the Page Setup Properties for the Excel Worksheet, and set the "FIt to Page" there, so How can I forcibly automate this exact same process without having to open the Excel APplicaiton.
View 3 Replies
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]..................
View 4 Replies
Apr 22, 2009
I have this piece of code that works very well and gives me the path the user's start menu:[code]This obviously uses late binding. Now say I want to do this in C#, or in VB.NET strict mode, neither of which support this kind of syntax with late binding.
View 4 Replies
Feb 14, 2009
It appears that when one creates an instance of Excel, using CreateObject, (Late binding), the suggested Excel closing function (with GC.collect etc) does not work. I have tried several suggestions, and the only one that works is process.kill method. Do you see any problem in using this? BTW: the reason we are using late binding is that we cannot use Office PIAs....not sure which version of Office would be installed on the client site. We work with O2003, but the client might still be at 2000 or 2002.
View 7 Replies
Jan 25, 2011
I have written an automation addin in Excel with C# (addin.dll). To use the addin, I need to 1. register it using "regasm /codebase c:...addin.dll"2. select in ExcelOptionsAddInsExcel AddinsAutomation the respective addin from the list
I would like to automatize 1) and 2), so that the user just needs to run an exe-file in order to use the addin. 1) should be no problem, but how can one automatize 2)?
View 12 Replies
Apr 20, 2010
Ok basically what I need to do is the following:Read FirstExcelDoc (attached)For every row in that: Retrieve data from sql server db based on info in the Orange columns of FirstExcelDoc Let's say I retrieved data elements A, B, C, D, and E from sql server. Then I need to enter those same data elements A, B, and C in another excel spreadsheet (which has formulas etc) After inputing A, B, and C in that spreadsheet, read a couple of calculated fields and compare those results to data elements D and E retrieved originally from SQL Server DB. Finally, output the results in the Blue columns of the FirstExcelDoc spreadsheet for that row.Loop through and do the same thing for row 2 of the FirstExcelDoc and keep on until you see "END TEST" in the FirstExcelDoc.
I'm looking for a method of doing this efficiently. I have read several articles over the past few days as well as those from Mike R. but just need some direction to get started on this.To start of I'm looking for whether to read the entire FirstExcelDoc spreadsheet or just read the info for first policy number(2nd row) and process it and write out the blue column info for that row and then loop through and come back and read the second policy number (3rd row) etc... Please attach a code snippet for either way of reading the data.
View 19 Replies
Jun 17, 2009
I'm using excel via interop in application.Sometimes users kill application that created excel instance and that results in excel instance sitting in memory without any chance of disposing it.First I tried to tackle this using ROT(running object table) looks like not all instances of excel are registered there.Than I tried to somehow mark excel process after it is started via interop.[code]This works as long as excel is visible but in my case excel window is invisible.All I need is to somehow mark process that started via automation with the parent PID, so that later I can kill it if parent does not exist.
View 19 Replies
Apr 16, 2010
I have successfully automated a PowerPoint Metrics presentation with VB.Net. However, since there were many complicated calculations, it took quite some time to make the 120+ slide presentation - so I recently tried to revamp the application to be multi-threaded.
[Code]...
View 1 Replies
Jan 21, 2012
I've got VS2008 and Office2010, but I don't have Office2007. Therefore, I have the Word14 Object Library but not the Word12 Object Library. Will the code that I create for Office2010 automation also work where clients only have Office2007 or will they have to upgrade their office suites?
View 1 Replies
Dec 17, 2010
I have been pulling my hair out trying to fix this.
[Code]....
View 1 Replies
Jun 1, 2010
We have a vb program which is run on our server by scheduled task every day. The program opens about 30 excel files, refreshes the data connections, pivot tables and then saves the document in another location.
This may run fine for a couple days but sooner or later the process starts crashing, usually with this error: RPC_E_SERVERFAULT.
My question is, Is it expected that continually opening/closing/refreshing workbooks will inevitably cause the Excel object to crash at some point.
View 3 Replies
Mar 28, 2011
i was wondering if someone could give me the final explanation on what i might be doing wrong here.I spent a lot of time reading around the net and the forum about how to add Threading capabilities to a VB project.
Nos, i've got .NET 4 installed, and i've added the system.tsr and mscorlib.dll files as reference in, say, Excel 2007 (see screenshot).However, when i try to make a thread with anything as basic as "Dim Thread1 As System.Threading.Thread", i get a user-defined type not found error.Indeed, when i use the object browser to see what's in the System file, theres nothing remotely linked to any Threading, and in the mscorlib file, nothing under "Threading" either, just a few Thread related functions, but nothing defining a data type
View 2 Replies
Feb 15, 2011
I've developed shared addin for Microsoft Word. I distribute this addin with my application and using Inno setup for installation. The Inno setup installs my application and then runs "myAddin.msi" file in order to install addin.
how to uninstall this addin programatically?
Right now, in order to uninstall addin, the user has to to it manually through control panel.
View 2 Replies
Jul 25, 2010
how do i use the webbrowser to display the word or excel docs. just like the pdf viewer... i tried the webrowser1.navigate but it didnot work, if it does its opening a new window, im using office 2010..
View 4 Replies
Nov 27, 2011
How do I use the webbrowser to display the word or excel docs. just like the pdf viewer. I tried the webrowser1.navigate but it didnot work, if it does its opening a new window, I am using office 2010.
View 1 Replies
