Reading Only Selected Details Based On Header From A String Or File
Jul 3, 2011
I have a weird requirement to parse a file which is a comma separated string with repeating header..i have a file which i load into database and this gets populated as a single column string with header and details data:something like this (This is single COLUMN String in a table). SSIS is not able to handle this so i am trying to know..If it is possible using writhing VB.Net custom component.[code]Also, if i can pass the values of header (i.e. header3, header5, header7 and header10) as a variable would be ideal.
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Aug 25, 2011
I use an OLEDB connection to read from an excel database, and this loop to read in all of the data from each of the columns
While reader.Read()
For i As Integer = 0 To reader.FieldCount - 1
temp = reader(i).ToString + ControlChars.Tab
output_file.Write(temp)
[code]....
Some of the columns contain date information, which are read in fine (usually as a string "2/20/2011" or so), but the headers of those columns are read in as a blank "". The headers for all the other columns read in fine, but not for the date containing columns.
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Jun 7, 2012
I have 12 Boolean values in an array. Each of these values represent a CheckBox in my application. I want my program to output a string, based on each value not selected. Each of these values will have a predetermined string that is different from the CheckBox's caption and will be joined to create a final string. I want to generate all the possible combinations for when there are 1, 2, 3, 4 and so on up to 12 of these options at once. I can better explain my problem through the repetitiveness of the code below.
[Code]...
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Jun 22, 2010
I am using the OpenFileDialog component with a Button Sub to use the text file that the user selects (it can change everyday) in the next part of my program that will read that file and then covert it into an xml format. How do I get the second part of my program to use the file selected?
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
If OpenFileDialog1.ShowDialog() = DialogResult.OK Then
Dim sr As New System.IO.StreamReader(OpenFileDialog1.FileName)
MessageBox.Show(sr.ReadToEnd)
sr.Close()
End If
End Sub
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Mar 4, 2009
I have a form called FrmPracDetails, which has details of practices and each practice has a unique prac_no populated on the form in the text box called TxtPracNo. Now, I have another form called FrmPayHistory. This form has a datagrid called DgvPayHistory, which is loaded with all the payment history of all practices. It has also a field called prac_no and stores the unique prac_no.
What I want to do is, when a user is in FrmPracDetails, lets say prac_no 1115, then you open the FrmPayHistory. Only the payment history of that respective prac_no should be seen. Presently, it brings all the practices and their payment history. I have added a textbox (TextBox1) in the FrmPayHistory which links and displays the prac_no from FrmPracDetails with the following code:
Private Sub FrmPayHistory_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.TblPayHistoryTableAdapter.Fill(Me.TblPayHistory._TblPayHistory)
Me.TxtPracno.Text = FrmPracDetails.TxtPracNo.Text
End Sub
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Apr 7, 2010
I have asked questions about this before but my program has came to cross roads where I require more flexibility in my security procedures.At the moment I generate a specific key based on certain details about the system, and I hash this data to file, which ensures it will only run on this system.
However it has now got to the point where I have a need for providing keys which will carry settings for the program within the key. So that if a customer wants an update its the matter of sending an updated key, which will allow certain areas of the program to be unlocked/locked.Obviously I can no longer use the hash, as it can't be decrypted. I am looking to use key encryption system, which will allow to encrypt data within a license key. But obviously it brings the problem of where to store Crypt & decrypt key within the program.
[Code]...
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Jun 5, 2011
how to display selected row from a datagridview to another form that records will be in textboxes..
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Apr 26, 2009
If i have a DataGridView is it possible to insert the details of a selected row into another form to update?
I have 2 forms frmMain (where the datagrid is placed) and frmCustomer (this is where i want the selected Row details to be inserted, so i can update them)
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Oct 1, 2009
I develop an application in Vb.Net 2008 and I want to connect it with MS Access 2000. I display the information that I want in a datagridview but I don't know how to take the selected row from the datagrid and display the details included there, on another GUI. I tried different types of code but I can't crack it.
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Mar 26, 2011
I've always been slightly stumped as to why the following happens if I write[code]...
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Jun 22, 2009
I'm new to Visual Basic 2010, I programmed in VB a long time ago. getting back into it. I have a SQL 2008 database and I want to use Visual Basic 2010. what I want to do is bring up a form with a group of products for my company. Based on the users selection they will put a check mark next to the product and then submit the query/data filter/ selection.passing that information to another screen with the details of all the sales for that item.
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Jun 17, 2010
how can I automatically resize Datagridview based on Column Header width? these code is not working for me:
[Code]...
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May 1, 2012
i have a number in this format: 123 and I want a select statement such as below for comparsion so i dont have as many if statements:
Select case numbers(i)
case is = "123"
case is = "234"
example but in real scenario numbers are random.
Heres my code in which all select cases dont get fired:
Public Function UserAdd() As String
On Error GoTo Errorhandler
Dim personcount As Integer
[Code]....
But the case is statements above dont fire when I know that number is correct above
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May 30, 2010
I've been trying to fix this problem for days, but I haven't been able to successfully apply any of the code that I've found to my project the way it is right now. Maybe I'll need to change the way it reads the file altogether.
Anyway, I'm trying to read through a text file line by line, reading each line into its own string.
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Dec 29, 2009
I have a remote text file on http://somewhere... that I need to read into a string variable in vb.net. What is the simplest way to do this?
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Aug 2, 2009
I want to read a tab delimited file so i set up a data reader with the following connection string: [Code] However when I do this it doesn't seem to delimiter at the tab characters (I cannot work out why it is breaking up the data where it is). the first few lines of the csv are in the attached "dbamstr.txt" - the select statement I am running is: "SELECT * FROM dbamstr.txt".
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Sep 7, 2011
I can write a 1-d string array to file with:
Dim test() As String = {1, 2, 3, 4, 5}
File.WriteAllLines("C:MyFile.txt", test)
but can't see how to write a 2-d array to file.
I've tried this:
Dim test(,) As String = {{1, 2, 3, 4, 5}, {34, 22, 12, 33, 55}}
Dim myfile = File.CreateText("C:MyFile.txt")
Dim row, col As Integer
[Code].....
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Jul 26, 2009
I have 4 Tables Master And Three Tables Details
how to programming this Technique
This Picture dispaly what i mean http://img300.imageshack.us/img300/3981/26072009110315.png
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Jan 4, 2011
We're converting a Classic ASP site to an ASP.NET site. One function was to upload a 'template' of data in CSV format for importing into the database. There were several different record types in there (the first field always indentifies the type of data).The task was to get the CSV into a DataTable so it could be validated (new project is to have MUCH better validation rules)
The code seemed pretty straightforward - watered down (taking out comments, Try/Catch, etc) it is as follows:
Dim da As New System.Data.OleDb.OleDbDataAdapter
Dim cn As New System.Data.OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" & strDirectory & ";" & "Extended Properties=""Text;HDR=No;FMT=Delimited;""")
[code]....
The DataTable (dtData) is populated, but only starting with the second line of the CSV file DESPITE the fact that "HDR=No" is in the connection string.
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Sep 20, 2010
I'm using vs2010 and can't get this to work. The same code has worked in earlier versions. What has changed?
config file:
<appSettings>
<add key="ConnectionString" value="Data Source=MikeLaptop;Initial Catalog=AdventureWorksDW2008R2;Integrated Security=True"/>
</appSettings>
Code:
Dim strProvider As String = ConfigurationManager.AppSettings("ConnectionString")
strProvider is always = nothing
How to do this now?
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May 19, 2009
Tell me older versions of these commands to be used with .NET 1.1?
The pieces of code I am using are:
For reading a text file to a string-
Dim str As String
'reading the content of the file "test.txt" and storing it in the declared variable
[CODE]...
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Apr 8, 2009
im trying to get details from a listbox to appear in a string during run time. I have a string called strSQLselect and want it to appear with the details already in the string and have the details selected in the listbox appear with it in a rich text box called rtb_select.
Hear is the code i have so far
Private Function ListOf(ByVal lst As ListBox) As String
Dim strSQLselect As String
strSQLselect = "SELECT " & ListOf(ListBox1) & " FROM " & ListOf(ListBox2) & "
[Code].....
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Apr 9, 2009
i want basically; words that get put in a listbox from a series of checkboxes i want to appear in a string of text in an rtb called strsqlselect. To form a line of sql code i.e the checkboxes select the fields etc and then are inputted into the string of text.
I have been give the following code;
[code...]
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Apr 16, 2009
have the folowing code
rtb_select.Text = rtb_select.Text & "Select " & ListBox1.SelectedItem.ToString() & ", " & " From " & ListBox2.SelectedItem.ToString() & " Where " & ListBox6.SelectedItem.ToString() & " " & ListBox3.SelectedItem.ToString() & " " & ListBox4.SelectedItem.ToString() & ";"
In this it only allows one item to be selected and outputted to the string.
How would i be able to select 2 seperate items from listbox1 and have them displayed next to each other and seperated by a comma??
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May 8, 2011
I have combobox, listbox and textbox. Combobox has datasource datamember values assigned i would like to select a customer from a combobox and save the datarow based on that selected value to an array it could be a list or whatever created in memory as variable and this will be my listview Datasource. I understand within that current row there is ID value which is interger.[code]...
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Dec 9, 2011
I'm trying to get a details view in ASP.NET to display the details of the logged-in user only. I have been told to use:
select * from STAFF where USERNAME = user.identity.name
I thought this was too simple to be true and I was correct as it shows no data when I attempt to run.
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Dec 12, 2010
my app is calling a dll that returns SQL details to a bufferred string, here is what i did 6 Dim server As New String(" ", 256) when i use this in sql connection string i get this error: Format of the initialization string does not conform to specification starting at index 22.
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Jul 3, 2009
How can I delete a row from an SQL database based on what item is selected in a listbox?
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Jul 11, 2011
I have to display the available times in a dropdownlist called "DDL_avalTime" based on the date selected in a ASP calendar.
How the program works is that when a User clicks a date form the caldendar, it checks the SQL database. In this case the table that I'm retrieving it from is "trainerbookings" from the column "trainingDateTime". The data type for this column is datetime.[code]...
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Aug 19, 2010
I am trying to enable/disable a date time picker control based upon the selected value of a combo box. The combo box is linked to a dataset here:
>Start Code
'Load Disposition Combo
cmDisposition.DataSource = dsFFDIlu.Tables(0)
[code]....
I am getting the error:
Invalid Cast Exception : Operator '=' is not defined for type 'DataRowView' and type 'Integer'.
The dataset 'DIID" field is obviously an integer.
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