Read Contents In Combobox?
May 9, 2012I have a pretty weird one here, would it be possible to read a column of a text file in to a combobox and to display the directory after the contents of the combobox?[code]...
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Filter Combobox Contents By Text In Another Combobox
Jun 22, 2010Brand new to VB 2008 Express, but have done some work in VB 6. Not sure what I'm missing, but here goes. I have two comboboxes linked to an Access 2007 database. One box lists the names of the States in the US.
This is what I used for the Table Adapter Configuration Wizard for the combobox "State" SELECT ST_UID, ST_NAME FROM STATE
For the combobox County I used: SELECT ST_UID, CTY_NAME FROM COUNTY ST_UID is an Integer.
I created a label with a bound value to STATE.ST_UID so that when a user selects the name of a state from the State box the appropriate ST_UID populates the label, (i.e, California has an ST_UID = 5).
The problem is when a state is selected, I only want the Counties for that state to appear in the County box, i.e, COUNTY.ST_UID = 5 if California is the selected state.
I then tried to convert the value in the st_uid label to an integer:
CODE:
This is what I last tried when again using the Table Adapter Configuration Wizard for the table that populates the County box: SELECT ST_UID, CNTY_NAME FROM COUNTY Where ST_UID = 'StUID' Order By st_uid, cnty_name
What I'm getting is a "Data type mismatch in criteria expression." I'm sure my error is something so simple.
How To Sort Contents In ComboBox
May 2, 2011I created a contact list application that loads a .txt file into a combobox. I need to then sort what's in the combobox, but I can't.
Imports System.ComponentModel
Imports System.IO
Public Class Form1
Private DG_contactsBlist As BindingList(Of String)
Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Dim DG_contacts As New List(Of String)
[Code] .....
Put Contents Of Database To A Combobox
Feb 23, 2011I am using vb.net and mysql as the database. I have created a field containing the abbreviations of words. My vb.net form provides a combobox which I want to connect to the field abbreviation. I want to configure the combobox so that when clicked, all the acronyms that exist in the database appear in the combobox.
View 1 RepliesPlacing The Contents Of A Listbox Into A Combobox?
Aug 19, 2011getting a scrapped list from a website into a listbox. I now need to use the contents of that listbox in a combobox and am going nuts. I have included the code
[Code]...
VS 2008 - Checking The Contents Of A Combobox?
May 16, 2011Can someone tell me why this code works exactley the opposite of the way I thought it should?
[code]...
I have a combobox (cbKeyWords). I want to make sure tbAddEdit.Text does not already exist before I save. To me I should be testing for a False result not True. But the above code, goes to the msgbox if findstringexact=false and saves the data if it's true.
VS 2008 Checking The Contents Of A Combobox?
Aug 7, 2009why this code works exactley the opposite of the way I thought it should?
[Code]...
I have a combobox (cbKeyWords). I want to make sure tbAddEdit.Text does not already exist before I save. To me I should be testing for a False result not True. But the above code, goes to the msgbox if findstringexact=false and saves the data if it's true. Am I crazy or am I missing something? Shouldn't FindStringExact return false if it's not found?
How To Read Contents Of XML File
Apr 25, 2010I have an XML file created using VB 2008 and I want to read the entire contents of the XML file into a text box.
View 8 RepliesRead PDF File Contents In VB?
Oct 16, 2011Is there any way I can read the contents of PDF file in Visual Basic 2010 ?Is there any ActiveX Control available for this purpose?
View 2 RepliesVS 2008 Read Contents Of A .ISO Using Zip/rar/7z/?
Mar 29, 2010Im working with .ISO and .Bin files, and 7z, winrar and winzip are all able to open a .ISO or .Bin like there a zip file and you can see the contents like so:
7z
UltraISO
What im trying to do is detect the SLUS_215.57 file name, to then pass on to my if statements, like so:
Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
Dim selit As String = CStr(ListBox2.SelectedValue)
[Code]....
Combobox Selection Alters Listbox Contents?
Feb 22, 2012I have a form with a combo box and a checked list box. When I select one item in the combo box, I want the list in the checked list box to change to the appropriate choices.
View 19 RepliesDrawing Artifacts - ComboBox Contents Scrolled Up Or Down
Dec 30, 2010A simple form with a combobox called Combo, drawing artifacts when using ComboBox with Custom Draw and the contents of the combobox is scrolled up or down, and with this source code, illustrates the issue:
Public Class Form1
Private Sub Combo_DrawItem(ByVal sender As Object, ByVal e As System.Windows.Forms.DrawItemEventArgs) Handles Combo.DrawItem
Dim Combo As ComboBox = TryCast(sender, ComboBox)
If Combo Is Nothing Then Exit Sub
If e.Index = -1 Or e.Index >= Combo.Items.Count Then
e.DrawBackground()
[Code] .....
VS 2008 Refresh Contents Of Databound Combobox?
Feb 5, 2010I have a combo box that's filled from a query in the database. If I add a field to the database, the new field won't show up in the form until I close it and reopen it.
So, how do I refresh the contents of that combo box?
I bound the data onto the combo box like this:
[Code]...
C# - How To Read PDF File Contents From Top To Bottom
Nov 17, 2009I want to read a PDF file having lots of text, images, tables in it. I want to read the entire file content by content page by page, from top to bottom.
For example:
The top of the page contains the Heading
Then on left hand side the contents and on the right hand side images
So I first want to get the heading then the contents then the images. Is there any Open Source for reading the PDF or any coding reference for .net 2.0 or greater version.
Read Contents Of Textfile Into Listbox?
May 15, 2009I'm trying to place the contents of a text file (just a list of names) into a list box when the form loads.
My code currently looks like this:
Imports System.IO
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code].....
I can get the names into the list box, but they're all on one line. I thought about using a For...Next loop to read the contents of the text file, but I got into all sorts of trouble; do I need an array with that method? So I've got back to the code I originally had.
Read From A Textfile And Add Contents To Different Listboxes?
May 24, 2009I have a form with 2 listboxes. I've added items in each listbox. I save all the items from each listbox to a text file. What I want to do is open the text file and I want each string inside the text file to go to the appropriate listbox. How can I make my program recognize where each string belongs?
View 16 RepliesGet A ListBox To Display Contents For A Selection That Is Made In A ComboBox?
Dec 16, 2009I am currently pulling data from a database into a comboBox. My intent is to have the description of the selected option in the comboBox displayed in a listbox. How to i get this data to be displayed in a listbox?
Here is the code that I have so far:-
Imports
System.Data.SqlClient
Imports
[code]....
VS 2010 Combobox Selection Alters Checkedlistbox Contents
Feb 23, 2012I am new to the forum and to VB, and not great at coding in general.I am learning, and this site as well as others have helped me get farther than I ever imagined. Second, my project is purely for my benefit, so I can learn.There is no corporate or school related goal here, just trying to learn.So the title is a summary of what I want to do. I have a form with a combo box that has five different choices, and below it, a checked list box. What I want is the collection inside the checked list box to change depending on what I select in the combo box above it.For instance, I have room 1 - 5 in the combo box, and the the checked list box below it, I have the furniture associated with that room.The eventual goal is to have this form populate a database, that allows the checked furniture to be recorded in a record.
I assume I need to use a db, such as access, to list the "furniture" in each room, and have a different table for each room, where the combo box selection will populate the checkedlistbox from the appropriate tables contents.I need a step by step on this, because I am a bit of a brick. Most tutorials are also done in VB 6 or VB 2008, and there have been steps missing in association to VB 2010.
Cannot Read Contents Of Text File On Website
Jul 18, 2010I'm trying to read the contents of a text file. Everyone says it's a piece of cake, but I still get error "404 Not Found" even though the site exists.
I'm using the following:
Dim myRequest As HttpWebRequest
Dim myResponse As HttpWebResponse
myRequest = HttpWebRequest.Create("[URL]") 'This does work
myRequest = HttpWebRequest.Create("[URL]") 'This does not
myRequest.Proxy = New WebProxy("http://proxy address", True)
myRequest.Method = "GET"
myResponse = DirectCast(myRequest.GetResponse(), HttpWebResponse)
When I hit the [URL] the myRequest.GetResponse command passes the contents of the site into myResponse. However, hitting the [URL] always returns 404 even though it exists.
DB/Reporting :: Write And Read Contents Of Textbox
May 16, 2008Would I be able to for example, write the contents of Textbox1 (say it's labeled First Name) and Textbox2 (Last Name) and make it write to a database. The on the next screen, form, window, whatever....have it say Hello (First and Last name that was put in on the previous screen).
View 2 RepliesDeviceIOControl Function - Read The Table Of Contents From A CD
Aug 25, 2011I'm trying to read the table of contents from a CD and am having problems with the DeviceIOControl function. When I call it with a control code of IOCTL_CDROM_EJECT_MEDIA or IOCTL_CDROM_LOAD_MEDIA it works fine, and opens or closes the CD drawer. But when I call it with a code of IOCTL_CDROM_READ_TOC_EX it gives an error code of 6 (ERROR_INVALID_HANDLE). I'm using the same handle, so I can't see why it's complaining. It's possible that the input data that I'm giving it is wrong, but I don't think that it should give this particular error in that case.
[Code]
Read CSV File And Store Contents In Array
May 25, 2010I have developed a vb.net dll (.net 3.5) which does the following :
- I have data of several stock market companies.
- They are stored in several folders under a main folder.
- These files are random access files.
- There can be around 4000 files in total for example.
I wrote a program which reads a current csv file and stores contents in array. Then I store name and path of companies in folders (which I was talking about). Then I match one company from csv (stored in array) to companies in user's folder (again reading from array). If found I insert data in the file (random access file). This whole process takes for eg. 2 min my system. A similar program was written years ago by someone in powerbasic which takes slight less time if run one but if run for multiple csv files it takes only a few seconds doing the same thing for other files. When I do the same thing (by writing code to .net dll) and making a dummy app to run it, no matter how many times I run it takes same time. And is way slower than the earlier one (PB) one I was talking about. But if I paste the same code in my win (.net) app and not use .net dll then it runs a bit faster.
I need to show status so if I pass my form's label reference to .net dll and it updates it does that slow down process a lot. As I mentioned I am trying to process the files and it takes longer in .net. What should I do to get best performance? Unfortunately due to unexplainable reasons I cannot change the format or use a db. The files which I am reading/writing (random access files) are use by other products so I have to stick to that format. What I am doing is storing the location of those files in array so that I don't have to search folder again. that is not taking time. But opening reading and writing files is time consuming if I am doing it for few thousand of them. A similar program in powerbasic (developed years ago) runs fast. Running code thru .net dll is slower than running it thru program. Why?
Read Text Contents Of Smart PDF File?
May 21, 2009I'm wondering whether anyone else has had to do this. I've looked in to some third party solutions.
The two I've used with the most success are: 1. xPDF. This includes an executable, PDF2TEXT.exe, which takes an argument that is the path to the PDF file to "read" and a second argument which is the name of the text file where it will write the output. This works well and fairly quickly, but it's external to my application and calling it via a Process.Start() command raises security considerations and requires to user to allow the external executable to run. They must allow this to happen AT LEAST every time they run the import application (IF they will check the "Don't keep bothering me about this" box).
2. A solution from Foxit, which is GREAT, but costs a good bit of money to use. Does anyone have a solution that I can implement IN MY CODE (like #2) but that's free (like #1)?
Read Contents Of Text File One Line At A Time
Oct 9, 2011I am totally embarrassed at having to ask this question, but I'm having trouble with file IO.I want to write a line to a text file. On another form, I want to read the contents of the text file one line at a time, so I can make comparisons of it's contents.
View 5 RepliesRead The Contents For Text File And Store Them In Array?
Feb 19, 2012I am unable to read from the text file in VB. I want to read the contents for text file and store them in array. See my code below and the text file. How should I read this text file.
'Purpose : This program will read student name & final marks for a set of students from the text file and then calculate & display class average, class standard deviation, number of students above class average, name of student with highest mark, number of students with A's(90-100), B's (80 < 90), C's (65 < 80), D's (50 - < 65) and F's (<50).Calculate for standard deviation of a set of numbers:Step1. :Find the average Step2. : Square the difference between each number and the average
[Code]...
[2008] Read Contents Of ZIP File (without Unzipping Preferably)?
Mar 5, 2009I need my program to 'take a peek' into a ZIP file and see if it contains a certain file. I need it to do this many times for a large number of files, so I would prefer it without having to unzip the entire zip-file each time, as that would take far too much time (it's a fairly large zip-file of about 250 MB).Also, I don't need the actual file at all. All I need to know is if it exists inside the zip file.
vb.net
If IO.File.Exists("C:FolderIPFile.zipfolder_in_zipfile.jpg") Then
' "file.jpg" exists inside zip-file!
[code].....
Use The Fileopendialog To Read The Contents From That Saved File Back Into Textboxes?
Dec 22, 2011So I managed to sync up the filesavedialog to save the contents of my textboxes to a file in a location, but how do i use the fileopendialog to read the contents from that saved file back into my textboxes?
Private Sub SaveFileDialog1_FileOk(ByVal sender As System.Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles SaveFileDialog1.FileOk
Dim FileToSaveAs As String = SaveFileDialog1.FileName
[Code]....
that's my save dialog. i want to bring up the saved text from textbox1 back into the textbox on my application using the fileopendialog.
VS 2010 Read A Word Document To Pass Its Contents Into A Variable?
Oct 10, 2010how I can read a word document to pass its contents into a variable. Is there an easy way to do this?
View 3 RepliesCombobox-Read Only?
Oct 28, 2009I want users to be able to select from thevalues in the combobox, butI dont wanna allow them toedit or write new item in the combobox i.e I want to make it Read only like what we can do in the textboxI changed its DropDownStyle to DropDownList But when I do that its text becomes blank(the drop down list with appropriate items is present)
View 1 RepliesRead Only Property For Combobox?
Mar 17, 2010What will be the code when I try to make a combo box read only?
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