Reading Text File And Assign Value To The Variable?

Mar 1, 2010

I have a text file. It has the following content.

5.000000 tEND =
1.0305644E-03 t_exposure=
32.50000 T_hfg=
20.50941 Temperature
-0.5424923 Heat flux
15.39559 impinging temperature

I have to read each line and assign the value to the variable in vb.net. for example i will declare tend, t_exposure, T_hfg, Tem, Heatflux as single in vb.net. Then I should read the file and assign

[Code]...

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How To Assign Variable To Text File On Load

Feb 3, 2012

I have the following code:
Public Sub SearchText(ByVal SearchFile As String, ByVal stSearchTerm As String)
''search loaded book
stSearchTerm = Me.txtSearch.Text
For Each Line As String In File.ReadAllLines(Path.Combine(Application.StartupPath, "BooksKJVOTGenesisBookOFGenesis.txt"))
SearchResults.rtbSearchResults.Find(stSearch, 0, RichTextBoxFinds.MatchCase And RichTextBoxFinds.WholeWord)

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Retrieve Info From Text File And Assign To Variable?

Mar 22, 2011

I have an application that gets executed on a windows mobile device using RAPI that outputs the current device type, rom version, and wireless driver version etc.. to a .txt file on the device.My plan is to then pull .txt file over activesync to my pc and then open it up and assign each of those attributes into variables in my application.

output.txt
DEVICE TYPE:SYMBOL MC70
OEM VERSION:05.43.0001

[code]....

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Assign Value To A Variable In An Application At Runtime Through A Text File And Then Set That Value To Permanent?

Mar 13, 2012

sir, i have no idea how the code will look, but i want it to assign a value after reading from a text file and then store it for further use even if the text file is not there, but without using any external storage like registry, disk, ram. It should store the value in itself and do like this:-

dim variable1, variable2 as string
if file.exists("text.txt")
read the text

[code].....

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Mar 1, 2010

Trying to read in three variables per line from a text file that looks similar to the first code segment. What we've been taught so far to read in is something similar to the second segment. And it works all and good for single words per line.

If this was C++ I'm pretty sure I could getline and use the comma as a terminator, but I'm not sure if a similar function exists for VB.

Bacon, 15.95, In stock
Stuff, 3044, warehouse
Something here, 84444, end of the road

[Code].....

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Feb 27, 2012

I have a Form1 with TextBox1 and Button1.

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i have this error in the line of with xl.active......Object variable or With block variable not set.

Dim xl As Object
xl = CreateObject("Excel.Application")
With xl.ActiveSheet.QueryTables.Add(Connection:= _
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[code]....

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Reading, Then Using, Then Reading Text File?

Jan 2, 2010

I am working on a project in VB 2008 and need it to do this:Read first line from text file (using Openfile)Enter line into textbox on formDo some other codeThen Read second linefrom text fileEnter line into same text boxand loop until we have gone through text fileI am not sure how to read line by line from text file then enter it in textbox. I can open the Openfile and get the filename and everything, but I just am not sure how to read from it or enter that line into the textbox.Here is what I have, its not much but its a start:

Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
Dim FileReader As StreamReader

[code]....

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Reading A Specific Line From A Text File And Displaying It In Individual Text Boxes?

Feb 16, 2010

I've been writing a weight program for flooded pressure vessels and I'm having trouble retrieving the data from the text files I've been saving. I know how to write the data to the text file, but retrieving it with OpenFileDialog is not so easy for me.The user has individual text boxes that they input strings or numbers into and when they save the file, each text box input is written to one line in the text file. For example, the first text box is for the username, therefore the first line of text that is saved is the person's name, the second text box is the customer, thus the second line in the text file is the customer name, and so on.

(Actually, the first line of text in the saved file designates whether English units were used or Metric units because when the user retrieves the saved file, English units will open one form and Metric units will open a separate form, so some If...Then statement will need to occur).I need to be able to read the first line, have either my "EnglishForm"form open or my "MetricForm" form open, and then have each subsequent line of text be displayed in their corresponding text boxes. I know I need to use ReadLine or LineInput, but I don't have a clue what to do.Assuming the syntax I've displayed below would just magically work (if only life were that easy), it would look something like this

If FirstLineOfTextInFile = "English" Then
EnglishForm.Show()
ElseIf FirstLineOfTextInFile = "Metric" Then[code]....

And so on...I read a lot of articles from the MSDN library and exhausted each link that I've looked through from Google and Bing, but most only retrieve data from the file to a single text box through some loop or streamreader and don't take into account multiple forms.

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Assign Each Value To Its Own Variable?

Apr 27, 2011

I have a file txt file that holds 3 values each seperated by a space how can i assign each value to its own variable and use that for other things?

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Forms :: Reading File, Split Text And Write To Text Boxes

Jun 25, 2010

I'm trying to read a text file that contains info like this:

ACX-101-011 , J2168
BTXR-130A-013, D6733
AJ4-233-614, T8211

I want to split each line at the comma and write the left side to a textbox and the the right side to another textbox. I'm close, with the code below, but I can only post results from the first line in the file. How do I loop this and append the text results in each of the textboxes.

Dim TempFile As String
TempFile = "temp.txt"
Dim sw As StreamWriter

[Code].....

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Assign A Resource According To A Variable?

Apr 2, 2010

I've been making this BlackJack program for a school project

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My question is, how do I get a picture box to assign the correct resource according to a variable

So, say I have

"pictDealerCard1" -> picture box which displays the first of the dealers card
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and resource '_37'

[Code].....

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[Code]......

i would like code 2 to work so that i can assign the variables different values at different scenarios. column serialno is a foreign key from table Stock.

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The function created by double-clicking on the datagridview is:

Private Sub DataGridViewInvoice_LostFocus(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridViewInvoice.LostFocus

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I'm trying to retrieve data from an access database, but I'm trying to do it all in VB. Basically I need to query the database, and I think I've done that correctly. But then I need to assign the value in a certain field, to a variable. So for example,
Dim email = orders.CustomerEmail.
How to assign a value to a variable.

Below is my current code:
Dim acc
As
New AccessDataSource()
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Call connectdatabase()
dim uname as string
dim pass as string
Try
sql = "SELECT * FROM user;"
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[Code] .....

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I would like to assign cboBegCust.SelectedValue to c and cboEndCust.SelectedValue to d

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[Code]....

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I want to Assign the Value to Multiple Variable of same type in .net and that to in one line of Code.

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How can I assign an exception to a property based on the class it inherits from?

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I have the following

Public Structure Foo
dim i as integer
End Structure

[code].....

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is there any possibility to assign a value to a variable inside an IF condition in VB.NET?

Something like that:

Dim customer As Customer = Nothing
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Dim query As IQueryable(Of Student)
If isNoUserName Then
query = From st In db.Students _
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[code]....

Return query

Error : conversions from 'System.Linq.IQueryable(Of )' to 'System.Linq.IQueryable(Of Student)'.

How do I declare variable "query" to hold both data from "Student" and "User" tables?

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I've just read [url]...

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it should be something like this (of course, the last line does not work):

'Determine what type of variable is needed later

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How do I assign the query result to a variable.I am using SQLlite. Below is the code for retrieving password from the User Table. I need to compare the given password and the given password.

Dim i As String
Dim p As String
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[code].....

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