Looping For Iterations And Excel Writing
Oct 20, 2011
I need to loop the "buttonOneClick for one second iterations. The program will send a "P" character, wait one second, send a p, wait one second, etc... Also I need to write the information it receives to an excel spreadsheet.
Here's what I have:
Public Class Form2
Dim buttonOnePush As Boolean = False
Dim buttonTwoPush As Boolean = False
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
' Send strings to a serial port.
[Code] .....
View 1 Replies
ADVERTISEMENT
Sep 7, 2011
how to loop through the rows in excel. I have rich text box that will contain serval line of text i then want the break the text into single lines, that i can do by use richtextbox.line and then use the split method. but the problem when i split the lines how can i put the first line in A1 the second into A2 etc there is no set amount of lines that will be in the richtextboxes so i would need to use some type of while loop i think but i can't figure out how to add a row for each new line any help would be great
my code:
Public Sub ExcelAutomationBtn1()
'Create a new workbook in Excel.
Dim oExcel As Object
Dim oBook As Object
[code].....
View 14 Replies
Jun 8, 2010
Is there a way to save either an array or list of data to excel without looping through the array/list? I know I have read from Excel this way but what about writing? Seems it would be faster.I'm collecting data from a device and storing into a list, then I copied it to an array getting ready to blast it in a single shot to Excel and got stuck.
View 11 Replies
May 24, 2011
Simple code :
Private Sub ExportGridToExcel()
Dim Excel As Object = CreateObject("Excel.Application")
If Excel Is Nothing Then
[code]....
How to bind entire grid in to excel without looping..
View 1 Replies
May 24, 2012
am converting some excel macro to vb.net, and it's almost done, but when i am looping throught +- 3000 rows and checking with 2 sheets it takes about 3 hours !
Dim Site1 As String
Dim Site2 As String
Dim Group1 As String
[code].....
View 2 Replies
Mar 16, 2012
These 2 ways of working both work, but I'm wondering if there's a difference in performance:
Dim collection As ItemCollection = CType(CellCollection.Where(Function(i) i.IsPending = True), ItemCollection)
For Each item As Item In collection
'Do something here
Next
and
For Each item As Item In CellCollection.Where(Function(i) i.IsPending = True)
'Do something here
Next
I thought the second one was better as you'd have a variable less and looks cleaner, but on second thought, I'm not quite sure what happens when you put a linq query in the iteration.
View 3 Replies
Jul 14, 2010
I know how to run through iterations using a counter. In my current application I need to iterate throughspecific users from a table, get however many rows are there for that user, write a table and email message (table and
View 1 Replies
Jan 14, 2011
I am trying to loop through an array and perform an httpwebrequest in each iteration. The code seems to work, however it pauses for a while (eg alot longer than the set timeout. Tried setting that to 100 to check and it still pauses) after every 10 or so iterations, then carries on working.
Here is what I have so far:
For i As Integer = 0 To numberOfProxies - 1
Try
'create request to a proxyJudge php page using proxy
Dim request As HttpWebRequest = HttpWebRequest.Create("[URL]")
request.Proxy = New Net.WebProxy(proxies(i)) 'select the current proxie from the proxies array
request.Timeout = 10000 'set timeout
[Code] .....
I have tried a using block, eg:
Using response As HttpWebResponse = request.GetResponse()
Using sr As StreamReader = New StreamReader(response.GetResponseStream())
Dim pageSourceCode As String = sr.ReadToEnd()
'check the downloaded source for certain phrases, each identifies a type of proxy
[Code] .....
Does the try catch statement automatically close the response, or do I need to put something in Finally? If so, what? i cant use response.close() because its declared in the try block.
View 2 Replies
Jun 24, 2009
I am using VB2008 express edition. I have this code:
'Age = 3 Iterations
Age = 3
Dim Myarray1(2, 3) As Integer
[Code].....
View 1 Replies
Dec 23, 2010
I'm trying to implement parallel computing using .NET 4 on an asp.net website housed on a clustered server consisting of 6-8 dual core servers. My original script contains two nested For...Next loops iterating through a range of values in a grid of x by y.
For each point in the grid (x,y), we should perform a computationally intensive subroutine called MakePartsMatrix which accesses a SQL server database with dataviews and manipulating the local variable "unfilled" which is passed in ByRef.
Without the parallel implementation, the nested for loops work fine except its slow -- taking about 60 seconds to run.
When I parallelize the outer For loop, the script is about 50% faster, completing its calculations in 20-30 seconds which is great. However, I have noticed that the parallelization causes random parts of the grid to be either completely skipped (eg, grid (1,5) is never evaluated by the MakePartsMatrix), or some points in the grid (eg, x=10 & y=5) to be evaluated multiple times, resulting in duplicate work.
When I parallelized only the inner For Loop, the script execution time also improves by 50%, but now the last row (y-1) in the grid is skipped entirely and the results in "unfilled" are completely wrong.
When I comment out the "MakePartsMatrix" subroutine, the parallellization (either inner or outer For loops) does appear to visit every point of the grid (x,y) once, and only once.
Dim ConcurrentListofResults As ConcurrentQueue(Of FindBestResults)
ConcurrentListofResults = New ConcurrentQueue(Of FindBestResults)
Dim FBSResultsItem As FindBestResults
[Code].....
View 11 Replies
Jun 15, 2009
how to write and overwrite a excel files?write is like create a new excel files and insert data to it using vboverwrite is writing data to the excel file which overwrite the old
View 2 Replies
Jun 21, 2011
I want to write a formula to SUM from column B4 to M4, this should be done using vb.net programming.
I tried using the following stuff:
oXLWsheet.Range(4, 14).Formula = "=SUM(oXLWsheet!$B$4:M$4)"
"=SUM(B4:M4)"
"=SUM(B4,C4,D4,E4,F4,G4,H4,I4,J4,K4,L4,M4)"
Nothing is working for me. I'm getting the following error when I run the code:
"Exception from HRESULT: 0x800A03EC".
View 2 Replies
Oct 20, 2010
I am creating a new spreadsheet from existin data. The new spreadsheet size changes based on the input data. I am using lastrow, and lastcolumn to format new valid cell raqnge. I also need to enter a predefined statement in column A of the the last row.
View 2 Replies
Feb 8, 2011
I am getting an error message when I am attempting to write to an excel worksheet using VB.net 2005
Operation must use an updateable query I have gone thru the S/O search results[URL]..My code is:
[Code]...
View 2 Replies
Feb 4, 2012
I have data that I want to have written into a Microsoft Excel File.I found the following question, but this is using a predefined name where as I want to use a Save Command Window on a menu bar.Coding for Excel sheet in Visual Basic 6 Essentially I have two columns of data, Participant Name & Time In Ring, I want to cycle through an array (I suppose) and have each item on its own line.
View 1 Replies
Aug 19, 2011
I want to import my data, which I receive over USB (every second), to an Excel sheet. Thing is, I want to open only one Excel file and write everything to this one file, and by pressing a "STOP" button, data reception will be canceled and data in the Excel file should be saved and Excel file should close right after that. Here my code,
Dim excel_cnt as Integer<br/>Dim sv_var as Integer = 0<br/><br/>Sub write_to_excel()
Dim xl As New Excel.Application
[Code]....
View 3 Replies
Aug 23, 2010
I'm developing a program that handles money, and there is a pre-made excel spreadsheet that I am to be transfering data into specific cells. How can I go about telling my program to write specifc data into specific cell numer in excel? Also, how can I get my program to write into specific areas of a MS Word Template (my program will generate letter with the same template just different names/addresses/valus)?
View 3 Replies
May 26, 2009
If you know the cell number that you need to write to in excel, say E3 what would you use for the VB2005 code? I can't seem to find an example on this!
View 7 Replies
Feb 2, 2012
I was developing a software with related to Excel, in which I have to write and SAVE the details at appropriate columns. I am currently having a problem in saving the data.
Private Sub Button1_Click_1(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
'Open
[Code].....
Very first time I debug the coding I haven't got much problem. But debugging it again gives me an Error AS: "A file named 'Resume.XLW' already exits in this location. Do you want to replace it?"
I was able to see this since I have enabled the display alerts. Disabling it generates a save as window.
View 2 Replies
Mar 4, 2010
This method for writing a listview to an Excel spreadsheet is very slow.
Public Sub ListviewToActiveWorksheet(ByVal lv As System.Windows.Forms.ListView)
Dim mSheet As Excel.Worksheet
Dim mRow As Integer = 1
[Code].....
View 2 Replies
Mar 16, 2010
I'm fairly new to coding in Visual Basic, and I'm working on a project where I have to allow users to write data to an existing Excel worksheet (by entering the data into a form created in Visual Basic.NET). I've created a form that allows users to enter data such as the following:
[Code]...
View 8 Replies
Mar 15, 2010
I'm working on a project where I have to allow users to write data to an existing Excel worksheet (by entering the data into a form created in Visual Basic.NET). I've created a form that allows users to enter data such as the following:
Name (First, Last)
Mailing Address
Email Address
Gender
Age
...and so on. I've programmed the data to be sent to the Excel file upon clicking on the Submit button in the form itself. I've also created the Excel file and placed it on my C: drive, but the problem I'm having is trying to send the data from the VB form to the Excel file itself. Can someone please show me some sample code or point me in the right direction as to how to get the submitted information from the form to save into the Excel file, please?
I'm trying to get the information to show up in rows and columns in Excel like the following below (the dashes are just to show that the information should be in rows and columns):
Name--------------------------Mailing Address-------Email Address-------Gender-------Age
John Doe---------------------2300 Jackson Street-------- xxx@xxxx.com-------Male---------17
View 4 Replies
May 21, 2012
To write code to implement data from visual basic into excel. Write a VB.NET program to store the following numbers into an array named �Scores�: 89.5, 76.2, 90, 86, 81, 97, 61, and 73. Your program will calculate an average score, list each of these scores in a new Excel workbook and show whether each score is below or above average. Your program will then save the Excel workbook as TestScores.xlsx.
In column A1 it should say "average" and next to it (in b1) should have the average of all those scores. in the cells below (starting from A3) it should list the scores and the column next to each score it should say whether each score is above average, average, or below average (compared to the average calculated in cell b1)
View 2 Replies
Dec 27, 2011
We have an automatic process that opens a template excel file, writes rows of data, and returns the file to the user. This process is usually fast, however I was recently asked to add a summary page with some Excel formulas to one of the templates, and now the process takes forever.
It successfully runs with about 5 records after a few minutes, however this week's record set is almost 400 rows and the longest I've let it run is about half an hour before cancelling it. Without the formulas, it only takes a few seconds to run.
Is there any known issues with writing rows to an Excel file that contains formulas? Or is there a way to tell Excel not to evaluate formulas until the file is opened by a user?
The formulas on the summary Sheet are these:
' Returns count of cells in column where data = Y
=COUNTIF(Sheet1!J15:Sheet1!J10000, "Y")
=COUNTIF(Sheet1!F15:Sheet1!F10000, "Y")
[Code].....
View 3 Replies
Jan 10, 2012
My Windows Forms app collects data from user input and mathematical calculation and outputs a set of results to an Excel spreadsheet.
Here's my code (for convenience, I've included only the code that seems relevant to the problem):
Dim exc As New Excel.Application
Dim book As Excel.Workbook
Dim sheet As Excel.Worksheet
[Code]....
View 1 Replies
Jan 30, 2010
I'm trying to export a list of properties received from an API call out to an excel workbook. I'm quite inexperienced in the area but I'm trying to have the properties written relative to the cell (i) in the for loop.The code is this at the moment:
vb.net
Public Sub BHorse_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BHorse.Click
[code].....
View 1 Replies
Oct 25, 2008
I have an application which opens one of several excel templates, fills a datagrid view with Excel Named Range data. Once the data is modified in the application I neet to save it to an excel spreadsheet. I currently have the following working:1. This sub writes 2 columns of data (Ingredient) and (Result) from those named ranges and places them in the datagrid
Private Sub CboBoxTypeCofA_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles CboBoxTypeCofA.SelectedIndexChangedWorkbookTemplate = ""CofABook = ""
[Code]....
This code works and the only problem is that after running the code the excel application does not close.Now I need to write the completed updates from the datagrid view and the other controls back into a workbook.Ive been searching around but have not found the proper way to do this and how to kill the oexcel application in the code above.
View 8 Replies
May 21, 2011
I want to import data from excel and move that to Datatable in VB.NET 2008. I wrote and working but its taking too long time.. for 1500 records its taking 4.40 min.
[Code]...
View 1 Replies
Nov 9, 2011
I did ana application that interacts with excel (reading and writing files)But when the application ends and I close it, the excel file is still in the task manager procceses (ctrl+alt+del ->Proccesses)How can I completely close it?I'm using vb.net 2010 express
View 2 Replies
May 11, 2009
I'm writing a VB.NET program (VS 2005) that reads data from an XML document and writes it into a column in an excel spreadsheet. It's working fine, except for the following: after the first run, all the data appears as expected - for example
COLUMN
a
b
[code]......
View 1 Replies
