I am going to create a spreedsheet file via vb.net. The file has three columns--"FileName", "Class", "Property".After create it, I want to write the strings and keep append them to the correspond columns in the file.
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I am writing a string to a xml document.I now have several different strings and I want to write all of them to one xml file. Is there any way of doing this instead of having numerous single xml files?
View 3 Replies I am trying to write data to an excel spreadsheet. Simply just todays date and the value of textbox1. I can successfully write it to excel, but how do I get it so each time the application runs it writes the data to the next available row?? I know there must be some loop involved but am having trouble with the coding..
this is what I have so far.
[code]
Imports Microsoft.Office.Interop
Imports System.IO
Imports Excel
[Code].....
How to write to Excel worksheets without open Excel Application.[code]...
View 4 RepliesI'm trying to write data from an excel spreadsheet to an Access database. When i run my program a message appears saying that the correct number of records have been saved, however when i check my access database no records have been written to the database table.
The following is a copy of my code (sorry i've just edited it to get rid of the white space that was added when i included it here for some reason.The code for writing to database:
Public Class Form1
Dim connection As OleDbConnection
Dim Command As OleDbCommand
[code]....
I've cracked the reading Outlook emails from a specific folder in a VB 2008 program but now I need to append my parsed data to end of an existing Excel Spreadsheet. where I can look for some code samples of now to do this?
View 3 RepliesI am attempting to write the entire contents of an ADO.NET DataSet to an Excel 2007 spreadsheet and, while having partial success, I am unable to dump the contents of the DataSet into the .xlsx file. "Partial success" meaning that I can generate the spreadsheet(s) ok, but cannot get the DataAdapter.Update to work.
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I have a VB.Net program that reads in a flat file, and then parses line by line, formatting the data into different spreadsheets in an excel workbook (each line can be any 10+ different record types so I parse and put in appropriate excel sheet).
For smaller sized flat files (under 10mb), the parser works great. However, I am trying this on a file that is over 120mb (400k+ lines). While running, I will get an OleDBException saying that the spreadsheet is full. Now I am pretty confident that Excel can handle a much larger data set than a flat file. So I assume this exception is not giving me the true story as to what is really occuring.
I open a connection, and then parse each line in the file, inserting each row into the excel file. I assumed it would be bad performance wise to open/close the connection between each insert. Could this be causing the issue? Any ideas what I need to do to handle such a large file? There are cases where the flat file can be over 500mb.
To actually do the insert into excel, I am just doing the following (I construct an sql query based on the type of row and values parsed):
Dim conn As New OleDbConnection()
conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + ExportLocation.Text + "" + importFileName + "-PVF.xls;Extended Properties=""Excel 8.0;HDR=YES"""
[Code]....
How can I change the following code to write to the database null instead of empty strings?
Public Sub SetChangeRequest(ByVal referenceLeaseID As Integer, _
ByVal referenceCustomerID As Integer, _
Optional ByVal custUnitNum As Object = Nothing, _
[CODE]...
In VS2010 how can I write and read some configure strings in app.config.
I wanted to add PrinterPort, PictureDirectory, ApplicationDirectory,LastImage, ecc
I'm a beginner and doing a review for my final...the question is-Write a Function procedure that takes an array of Strings, sorts it using Shell sort and returns the sorted array. I do not get shell sort at all.
View 3 RepliesI am trying to write a program that will compare two strings in different text boxes. Then it must add 1 to a third text box for every time a letter appears in both text boxes. So for example if textbox1 said ABCDF and textbox 2 said ABTR it should return the number 2 because A and B appear in both.
This is what I have so far
Public Class Form1 Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles string1.TextChanged
End Sub
Private Sub Compare_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Compare.Click
Dim string1 As String
Dim string2 As String
Dim Result As Integer
End Sub
Function stringcompare(ByVal string1 As String, ByVal string2 As String, ByVal string3 As String) As Integer
stringcompare(string1 As string, string2 As string) End Function End Class
Say I have a List(Of Tag) with Tag being an object. One member of Tag, Tag.Description, is a string, and I want to make a comma-separated concatenation of the Description members.Is there an easier way to do this than to read the Description members into a List(Of String) and then use the Join function?
View 2 RepliesI have users check off lab facilities in a UI. I want to use linq to fetch corresponding records for all of the labs that they have checked off. Basically,
Dim myRecs = (From l As EpiData In myDataContext.EPIDatas Where l.facility= _
one of the checked labs
So basically, I need to write a linq query where the "strings" to match are determined at runtime. Is there any way to do this easily? I know that there is a library out there called dynamic LINQ, but (1) it's in C# and I'm writing in VB (2) I'm really just looking for a single, simple solution for this single case.
I have many folders. Each folder contains an excel spreadsheet file. Path is as follows:"C:DU1212DU1212.xls"Folder are named as DU1212 only the numer 1212 changes for every folder.Excel files names inside these folders are named similarly such as DU 1212.xls
View 1 RepliesCan I get some assistance please on converting a basic text file into a excell spreedsheet (comma delimited).
I need to take this file that contains[code]...
I have been on MSDN about this and searched but it's not quite telling me what I'm after. I've extracted a list of file names from an Excel spreadsheet and want to check whether they all exist in a directory which a user can select in a text box. It feels like I'm nearly there with it but currently my listbox is displaying everything, I want it to just show the files that are missing. I'm a beginner so I'm not exactly sure if I'm even telling it to compare the two things properly, I've tried a couple of ways of checking if a file exists but neither seem to work.[code]
View 1 Repliescurrently i need to use 4 different texts files in order to read data and run my program, is there any way that i can just use 1 text file or 1 excel spreadsheet? here are my codes now.
Dim File1 As New System.IO.StreamReader("C:Documents and SettingsUserDesktopWindDirectionLanding.txt") 'Calling out the file.
Dim File2 As New System.IO.StreamReader("C:Documents and
[Code]....
I have a trouble making this code work. When executed, it just creates a correct (with the correct name) file with the extension .txt but the the actual text inside .
Imports System.IO
Public Class Form1
Public mytext As String
[code]...
The strange thing is that while debugging, h, t string variables have the correct values, but somehow mystream.write(t) doesnt work (it doesent write anything to my h.txt text file...
how can i save 2 textboxes(string) into 1 file? and when open the file, the string goes to definite texboxes...
[Code]...
Reading a .txt file in VB.net. My file path is C:UsersMyLilMulePepeDocumentsVisual Studio 2008Projectscurtain_calls.txt.
This is my line of Dim LoanOptionsFile As String = "C:UsersMyLilMulePepeDocumentsVisual Studio 2008Projectscurtain_calls.txt"
I can read the file when I run the program, but how do I write the file path so that someone else can download my program and file and read the file on their system?
I want to write a program to write in an xml file in this format:
<?xml version="1.0" encoding="utf-8" ?>
- <Orders>
<Item id="1" SKU="998123" Description="Super Widget" Quantity="100" />
[Code]....
[Background]:I created a Winforms App that reads data and spits it out into an Excel Spreadsheet. On my computer, I have Microsoft Office 2003 and inside of the Visual Studio Project, I referenced COM Object "Microsoft Excel 11.0 Object Library". The Executable is on a shared directory and end users can run the application and generate the reports themselves.
[Problem]:Problems arise when an end user with Microsoft Office 2007 runs the application, generates the Excel Spreadsheet and sends it to someone with Microsoft Office 2003, the Excel Spreadsheet opens with the standard "this file is not in recognizable format" error and when you push "ok", the data shows up as symbols (garbled text).
[Question]When I reference "Microsoft Excel 11.0 Object Library" in my project, how does the .Net Framework (or my Application) find this COM Object object when it is ran from another CPU?I guess, I would like to know how references work. When you reference DLLs in a VS.Net project, compile the program and then put the execuable on another PC, how does VB.Net go about finding those DLLs you referenced or is it part of the compiled program?
I suspect when a user running MS Office 2007 runs my app, it is running a 2007 dll instead of a 2003 dll.However, I would think an error would be thrown if this was the case.
I am working on a UDP Client/Server, and currently i have them sending back and forth strings, which i convert to bytes, and then open the bytes to read. I want to now send an Object instead of those strings, which includes multiple unsigned integers and strings.
View 39 RepliesI am creating a programme, where I type a sentence into a textbox, then send to an XML file to be stored, which works fine.However when I go to write a 'new' sentence in the textbox and save it to that xml file, and it overwrites the original sentence.I am using what is called a serializable data class to save to my XML file.
View 3 RepliesI am fairly new to vb.net but was programming a long ime with vb6 I have a binary file that is a mixture of numbers (integers and doubles) and strings, such as "Programming with VB". I read the numbers using the BinaryStreamReader.ReadInt32 and BinaryStreamReader.ReadDouble, which are no problem
View 5 RepliesI am reading a text file in which has three colums of information i.e.
00100 25690 21586
23510 25694 24856
25896 45478 52897
58745 59687 12364
I want to read the whole file, and split the colums so each set of numbers is put into an array to be used as an input for later. If the text file only contains one line of numbers like 00100 25690 21586, I have written a code to seperate those and put them into an array which is attached. If the text file contains more than one row of numbers I can read the whole file in line by line but I can't get the strings seperated.
[Code]...
I'm having trouble accessing the connection string from the app.config file. my connection string is:
Dim sConnect As String = "Data Source=.SQLEXPRESS;AttachDbFilename=G:VB Level 1ProjectContactsDB.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"
I using this string in a few different places, but I want to access it from the App.Config file. I've been at it for awhile and can't get it working.
How to compare two strings in a file that exists in a different lines. if these strings exists in lines are correct, then get the string from another different line.
Dim FilesToProcess() = Directory.GetFiles(WorkingFolder, "CP52500C*", IO.SearchOption.AllDirectories)
Dim CurCorpID, CurBin, CurPlan As String
Dim CorpID, Bin, Plan As String
Dim NewPage As Boolean = False
[code]....
I am coding this app on my home pc, but when complete it will be run on individual pc(s) (each pc has it oun HD) on a local network. I have a world of questions but right now how do I set the path to my database? is there a way to set a default if its not found.Database(s) that the app use's are stored in a folder on the server. i.e.: P:MyServerNameDeptFolderData for example.OLEDB or TableAdapters which would be the better choice.I understand that MS Access DB is rather resticting.
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