NET Method Equivalent To NETWORKDAYS In Excel?
Jul 7, 2009I'm trying to do some date math in Visual Basic. The NETWORKDAYS function in Excel is exactly what I need. Is there an equivalent or similar method available in .NET?
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VS 2010 What's Equivalent Method In .NET Of Picture1.Scale Method In 6.0
Jun 12, 2011What's the equivalent method in .NET of the Picture1.Scale (0,0)-(10,10) method in 6.0?
View 2 RepliesNetworkdays In VB.Net
Mar 26, 2009I have to create this class library file that will calculate networkdays using Visual basic.net, any one can help me with this?
View 2 RepliesEquivalent Of Excel Quotient Function
May 24, 2011Does VB.NET have a function to get the quotient like you can in excel.
Quotient(12, 6)
Display Excel File (even If Excel Is Not Installed) Library? Method?
Mar 5, 2012I have a project that has a need to display a Excel file in second window, but because other controls are needed, simply launching excel is not sufficient. Right now I do not know if the target machines have excel installed but I know with certainty that if they do it would be 2010, is there any method or library that allows you frame your own form around an excel window?
View 1 RepliesEquivalent Of Excel's CODE Function To Work
Jan 23, 2010In cell A1 of Sheet2 I have the following text [code]how to I get VB to recognize that the 4<sup>th</sup> character of the string has character code 63?
View 3 RepliesExcel - Equivalent Of Optional Range Argument In VBA Function
Aug 31, 2009I have an Excel VBA function that takes a number of optional parameters, including an optional Range:
Function DazBeta(A As Range, Z As Range, _
B As Integer, _
Optional Freq As Integer = 1, _
Optional c As Double = 0, _
Optional r As Range, _
Optional Pct As Boolean = True, _
Optional Label As Integer = 1)
I am translating to VB.NET, and it's the optional Range that is giving me grief because VB.NET does allow optional Ranges. Or rather, optional parameters must provide a default value. What is the recommended way to change the VB.NET function signature so that the code is callable from an Excel cell as a UDF? (The VB.NET implements a UDF, the assembly is registered as a COM server, and the Excel spreadsheet is told of this server and type library, allowing the VB.NET code to be called from an Excel spreadsheet cell.) I have other compilation problems, so I have not been able to explore this. I am thinking that accepting an optional Object (default value Nothing) might work and then I could cast the Object to a Range. Alternatively, if there were a default value that could be specified with an optional Range, that would work, too.
VS 2010 Excel Method Find In VB2010 - Convert Excel Macro In A Exe File Using Visual Studio 2010
Oct 25, 2010I decided to to convert my excel macro in a exe file using visual studio 2010. In excel macro method find is present like this:
[Code]...
Oauth - What Is Equivalent For "Response" Method Of ASP In .NET
Dec 13, 2010I am trying to implement oAuth authentication in my desktop application. In a code example I found over the internet is like below. I guess it is ASP.Net code but I'm using VB.Net for my project. The problem is I don't know what is equivalent for Request in VB.Net.
If Request("oauth_token") Is Nothing Then
MsgBox("Nothing")
Else
MsgBox("Something")
End If
What Is The Equivalent Method Of "MethodInvoker" In VB
Jul 16, 2009I am writing a Client Server based chat application in VB.NET. Initially i wrote a code for Window's application and server was a Console Based and its working fine. Two clients can exchange text messages between them.Now I'm trying to write the equivalent client's code for Smart Devices but I'm getting an error of "Type MethodInvoker is not defined" its coming in this piece of code.
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Best Or Better Method To Open Excel File
Jun 2, 2011Im struggling on how to open an excel workbook without one of two problems.
1. After the first workbook is opened and I close the workbook, if another is opened the worksheet area is "transparent", as in, you can see the desktop or any open app behind excel.
2. Closing excel and opening another workbook after X times (4+?) via the vb.net app I use causes the computer to reboot.
I am stuck thinking it is the method used to open excel within the app.The code below has two methods, both produce the same affect. One method is blocked (makes it easy to test either one).[code]I have two buttons that open workbooks, both have identical code less the workbook requirements.Is there a better or best method to use for opening excel workbooks from vb.net?
Call The Chart In Excel Using Poi Method?
Jun 3, 2010i have an excel template and there was a chart there, I was confuse on how can I call that chart when I'm coding in vb.net.. how can I call the chart for me to set the new value to fill the chart..
View 1 RepliesLimitations Of Excel Resize Method
Jul 9, 2010I am loading a considerable amount of data from SQL into Excel. For specific reasons, I need to use the Resize method with an array when loading data to Excel.I have found a condition where the size of a cell/row causes the Resize method to crash. I have not found any doco anywhere that shows a Resize limit. My array is OK. My code is OK. But, the data for one row is very large - one field that I am trying to load to a cell has 1097 characters. I have breakpointed the code to assure that this one is the culprit.[code]Does anyone know of any size limits when using Resize. The total number of bytes being written to the row is 1402.Anyone know limits on length for Resize or "overrides" to handle this?
View 1 RepliesReleasing Excel COM Object Method?
Sep 23, 2011Well, I've searched numerous threads and I'm stumped. Though my VB.net experience is newb status.I'm interacting with Excel Workbooks/worksheets with:
Imports Excel = Microsoft.Office.Interop.Excel
Now I'm fairly adept with getting data from the excel sheet with no problem.But each and every time I quit my widows form, or execute a new command_button click to repeat an operation, in the task manager, excel.exe then opens up a new instance.Releasing the the Excel COM object seems to offer a bit of head scratching.I realize that you can get your form to activate and retrieve data from whatever spreadsheet has been directed to be opened, but I can't seem to put it back and close it correctly.I have read about the Marshal. release object methods and garbage collection with no luck so far.Do I need to import another liberary that completes this operation? I would asssume this would be taken care of as apart of the:
Imports Excel = Microsoft.Office.Interop.Excel
close excel instances opened up by my windows form? Somethig like this:
Dim xlApp As Excel.Application
Dim xlWorkBook As Excel.Workbook
Dim xlWorkSheet As Excel.Worksheet
[code]....
(so that it is no longer looked at as "read only" when the spread sheet is opened up from directly from excel)As A minor work around, I've teminated it from the task Bar with proc.kill() but this does not help because my ultimate goal is to just simply realease the excel sheet when my windows form is finished getting its data.This following code does not seem to work.
releaseObject(xlApp)
releaseObject(xlWorkBook)
releaseObject(xlWorkSheet)
Error Using Excel Range Find Method?
Mar 21, 2012This is driving me crazy. I keep getting an exception with the below code trying to usethe Find method. he error is "Unable to cast COM object of type Microsoft.Office.Interop.Excel.ApplicationClass' to interface type 'Microsoft.Office.Interop.Excel._Application'. This operation failed because theQueryInterface call on the COM component for the interface with IID '{000208D5-0000-0000-C000-000000000046}' failed due to the following error: No such interface supported (Exception from HRESULT: 0x80004002 (E_NOINTERFACE))".I have confirmed LastRow = 845
Imports System.IO
Imports Excel = Microsoft.Office.Interop.Excel
' open a read-only version of the data file
[code].....
VS 2008 Most Optimal Method Of Dataset To Excel?
Oct 22, 2009I am looking for some guidance with the most optimal or efficient way to export a dataset to an excel file. I have searched the forums and found a number of methods to do this. However, the code I am currently using is very inefficient as it is itterating through the rows and columns to create the excel file. The app I am working on needs to be able to create 50 or so excel files each with 500+ rows and 40-50 columns. This method seems to inefficient for my use
View 9 RepliesExcel Find Method - System.Reflection.Missing Object
Dec 14, 2010I have tried several versions of this with no luck. The casting of the worksheet works as my data is entered in other parts, but I have a section where I need to add data 1 column right of the cell containing the 'str(0)' value. Most of these parameters are optional. I have even tried the System.Reflection.Missing object.
[Code]...
Strongly-typed Generic Method Invokes Its Argument's Base Class Method Instead Of A Shadowed Method In T?
Oct 19, 2010Consider a MyForm class that contains a shadowed implementation of Show(). It also contains a CreateForm() method, which accepts an instance of the form and calls the shadowed sub:
[Code]....
Getting A DoCmd.RunMacro Method For Running Macros Inside EXCEL And Word?
Dec 19, 2010getting a DoCmd.RunMacro method for running macros inside EXCEL and Word?
View 1 RepliesAutomated Method Of Getting Disk Space On All Servers And Putting It In A Txt Or Csv (or Even Excel) File Once A Week?
Aug 3, 2011[code].....
View 10 RepliesVS/VB 2010 - Sorting Excel Rows Getting Error "The Sort Method Is Not Valid'?
Jun 14, 2011In the following code all goes well until the .Sort line. Then I get an error which says, "The sort method is not valid. Make sure it is within the data you want to sort and the first sort by box isn't the same or blank."I've tried various permutations to deal with this exception, all to no avail. The Range is Selected ok and the Excel data are pasted from the clip board ok. Then I get the error and no sort occurs.
[code]...
Office Automation :: Method Not Found: Void Excel.Range.set_Value(System.Object,System.Object)
Mar 11, 2009following error message:
Method not found: Void Excel.Range.set_Value(System.Object,System.Object)
Does Calling The Dispose Method On A Windows.Forms.Timer Call It's Stop Method
Nov 12, 2009Does calling the Dispose method on a Windows.Forms.Timer call it's Stop method? Or should I stop the timer before I dispose it?
View 5 RepliesInheritance - Create A Method Called StartWorking() And Want FrmChild To Inherit - Method
Nov 25, 2011I have a large problem with inheritance in vb.net. The problem is the following:
I have 2 forms => frmBase and frmChild
In frmBase i want to create a method Called StartWorking() and i want frmChild to inherit this method.
But here is the tricky thing: when frmChild.StartWorking is called i would like the following => without calling MyBase.StartWorking()
I want frmBase.StartWorking() to be executed first and after a test in frmBase.StartWorking if blnValue is true then frmChild.StartWorking has to be activated. if blnValue is false that frmChild.StartWorking cannot be activated.
Use The ToString Method And A Counter To Concatenate A File Name Into A String Variable From The Image.FromFile Method?
Dec 18, 2010I have nine pictures that I need to animate -I need to use the ToString method and a counter to concatenate a file name into a string variable from the Image.FromFile method. Once the counter reaches its maximum value, and the last picture is displayed, the counter should be reset to zero or one depending on how the first image file has been name. Also a static counter variable should be incremented in the time routine. what I have so far -- I know what I have to do; however, I just do not know how to code this properly.. Right now I have this going thru a button procedure but it needs to go through a timer.
[code]....
Constrain A Generic Method / Extension Method To Numeric TYPEs Only?
Sep 16, 2010Write an overload for every numeric type or if possible constrain a generic extension method to just numeric types.
View 2 RepliesDifference Between My.Computer.FileSystem.WriteAllText Method And The IO.StreamWriter Method?
Jun 2, 2011I just need to know what is the slight difference between them so I know which one to use everytime.
View 5 RepliesGet The Name Of Parent Method/class/file Name Inside Other Method Call?
Feb 16, 2010I will try to explain what I need.Let's say that I have a class like this:
Public Class Example1 Public Sub ToBeCalled()
[Code]...
Reflected Method From A Loaded Assembly Executes Before Calling Method?
Jun 9, 2009When I am loading an Assembly dynamically, then calling a method from it, I appear to be getting the method from Assembly executing before the code in the method that is calling it.It does not appear to be executing in a Serial manner as I would expect. Can anyone shine some light on why this might be happening. Below is some code to illustrate what I am seeing, the code from the some.dll assembly calls a method named PerformLookup. For testing I put a similar MessageBox type output with "PerformLookup Time: " as the text. What I end up seeing is:
First: "PerformLookup Time: 40:842"
Second: "initIndex Time: 45:873"
Imports System
[code].....
Hook Excel - The Process Excel.exe Doesn't Finish After Close Excel
Jul 20, 2010I need to access the current instance of MS Excel. To do that, I wrote the following code:
Imports Excel = Microsoft.Office.Interop.Excel
Imports System.Diagnostics
Private _ExcelApp As Excel.Application
[Code].....
The code runs nice, but it has a problem: After the user close the Excel application (click button X - note: no other instance of Excel exists), if you open the Windows's task manager, its possible to see the process Excel.exe.
If I open and close the Excel application, there is no process Excel.exe, but if I run my code with the Excel application openned, after the user close the Excel application, the process Excel.exe isn't finished.