Forms :: Display Data Being Processed In Loop?
Sep 28, 2011
I have a procedure that loops through the directories and subdirectories on a file server and sets the permissions. Procedure is called on a button click on a form.
I need to display on the form which directory is being processed. Similar to if we use the Debug.writeline which writes to the output in Visual Studio. I tried using a ListBox but it only displays the last one and only displays the last one once processing is done. I want to be able to display each directory name as it is being processed.[code]...
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Mar 14, 2011
Makes the following statement about the code below:
**"The computer evaluates the loop condition in the Do...Loop statment to determine whether the loop instructions should be processed. In this case, the inputsales <> String.Empty condition compares the contenst of the input sales variable to the String.Empty value. As you know the String.Empty value represents a zero length, or empty, string if the inputsales variable is empty, the loop condition evaluates to True and the computer process the loop instructions. *If on the other hand the inputsales variable is not empty, the loop condition evaluates to false and the computer skips over the loop instructions.
Based on the code I think it is the opposite: ...that while the inputsales value is not empty it should evaluate to true and process the loop and if it is empty it should evaluate to false and skip the loop?
See below.
Option Explicit On
Option Strict On
Imports System.Globalization
[CODE]...
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May 22, 2009
I have just started with vb and would like to know if there is a way to input several boxes of data on one form and display individual pieces of that data on several other forms at timed events in the future?
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Oct 6, 2011
how to display data in grid view using code that you can edit, update and delete the data...do i need to have a stored proc in this?
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Jan 19, 2010
Dear Experts
Table gpass has data as
gate-----date-----c----bno----acccode----tittle----weight-------qty
1----18/01/2010---a----2--------2----------abc-----10.00-------15
[Code].....
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Oct 2, 2010
i am working on my search button, and successfully the data can be display in datagrid. Now i have problem to display the data into textboxes by clicking on the datagrid.i use Microsoft access for my database.
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Feb 4, 2009
i need to create one search box using textbox and the result will display on listbox.
I have textbox1 as inputbox, button1 as search button , listbox1 to display the value , Database1.mdb as my database.
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Oct 15, 2010
After display list of data in combo box, next I would like to choose the data from the combo box and display all the information from the chosen data to texboxes , the data from combo box was link from my database (ms access).
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Dec 21, 2009
I use following codes to diplay data in combobox
str = "SELECT sno,name,city FROM employees"
cmd = New SqlClient.SqlCommand(str, con)
[CODE]..............
With ComboBox1
.DataSource = dt
[CODE].......
Table has three fields as sno,name,city Combobox displays name column and data in table is as
sno--name-----city
1-------a------london
2-------b------moscow
3-------c-------tehran
Supose combobox text=a then I want to display following corresponding data in textbox1 and textbox2
textbox1.text=1
textbox2.text=london
(the first row of data)
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Oct 17, 2011
how to upload to FTP, however when using the FileUpload control inside a Wizard control, when you move to the next step, the File you selected gets cleared because of the postback. I need to be able to rename the file according to the results from the Wizard before uploading. So...
I finish my wizard It uploads some stuff to a database Renames the file according to those results Uploads the renamed file to the FTP server
I suspect I will need to follow a procedure something like this, having an upload button next to FileUpload
On "Upload" button click stream the file to the Web Server. Complete the Wizard. If the wizard completes successfully, rename file and stream to FTP server. If the wizard fails, what? Delete the file from the web server? How?
I think I understand the process, how to split my FTP Upload function into two parts with the proper error handling for when the wizard fails.
Protected Sub UploadFile(ByVal NewFilename As String)
Dim myFtpWebRequest As FtpWebRequest
Dim myFtpWebResponse As FtpWebResponse
[Code]....
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Jun 16, 2009
In VB .NET, when you call RaiseEvent X(), is the function that handles the event X processed asynchronously or synchronously. I was under the impression that RaiseEvent and the processing of the event were Synchronous unless created explictly on another thread. I've been told otherwise though.
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Jun 16, 2009
Put processed variables into Word Document ('03)
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Jan 20, 2010
I'm using a modified version of John's Message server, instead of passing a string I am passing a serializable object called "DataClass".This is my modified Read sub to process data that gets sent from the client to the server:
vb.net
Protected Overrides Sub Read(ByVal ar As IAsyncResult)
Dim asyncState = DirectCast(ar.AsyncState, ReadAsyncState)
Dim buffer = asyncState.Buffer
Dim client = asyncState.Client
Dim host = Me.clients(client)
[Code]...
The message is received fine when they aren't in quick succession, however I tested it by sending like 1000 messages almost instantaneously and it only processed about 2. Obviously this isn't acceptable, but I am unsure how to properly implement some type of queue that will ensure all backlogged messages will get processed.
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Nov 15, 2011
I'm developing an application which requires log in. I'm using Master Pages and a customer Web Control which is my main menu system. The main menu accesses database information to provide notifications and various things, none of which will work unless the user is logged in. I am trying to place the following code:
If Session("hgAdminUser") = "" And InStr(Request.ServerVariables("url"), "/Login.aspx") <= 0 Then _
Response.Redirect("Login.aspx") ' if userSession is empty, redirect to login page.
Into the top of my MasterPage code behind, but it's still trying to process scripts, the main problem being that it is running the .ascs file which requires Database access, which it can't do without the required parameters from Login. I've tried running it within a Page_PreInit sub, also Page_Load and Page_Init, but in all cases it ignores this (or probably doesn't ignore it, but errors come in before it deals with this) and returns a big fat ERROR due to functions that I don't even want it to be running!! How can I check for a session variable, which if not present cause all other scripts on the page to be ignored and redirect? This is all using VB.NET
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Jun 23, 2010
I have an array that is a list of files in a folder, I'm processing the files and renaming them. It takes about 15 minutes to rename them all, this is done daily. I currently have 1 Backgroundworker to handle this and update the UI.
My question is, this: How can I use more than 1 Backgroundworker to use more than 25% of the CPU to do this?
Split the array into 3 parts and call 3 separate workers to do their part?
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Mar 11, 2010
in my program it has a log in system already done by myself and once logged in you can do whatever i have coded in if you understand my meaning . what i want to add to it is a timer that can be edited that runs as a standby timer like with what a screen saver does and logs out after inactivity for a specified time now i have no idea where to stat with this so if some one could put me in the right direction or an example would be great.so i need it to start a timer once the mouse is not moving and no keyboard keys are being pressed and terminate the timer once keyboard keys are being pressed or mouse is being moved it's for an update that i am releasing on my publishers website for my program?
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Nov 10, 2011
We have an application that has a main form with a map on it. Right now the paradigm is to have forms that are displayed using menu items to display information to the user. Most of these forms are modal forms, but a couple are non-modal forms that interact with the map. For some of the forms, it really would make for a better user experience if we could dock them in the main form of the app and allow the user to see both the form and the map. For instance. We could have a list of map features in a docked window, and select one of the items on the list and have the map zoom to that feature. Or do the reverse: let the users select a map item and have a docked window that shows details of the feature. Sounds great, but I wonder about what sort of gotchas we may encounter. In particular, what if we have two windows docked at the same time? Could we get tangled up in our event code?
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Nov 25, 2009
how can i return the number of records processed from an sql procedure whether it is a select or update/insert query and how can i receive it in the calling method in vb .net.
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Dec 30, 2011
I'm fairly new to VB 2010 but very familiar with programming in other languages. I'm trying to make a quick application but I'm at a stand still. I know it's something simple but I've searched around and I may have found the answer but because I don't understand the problem I'll never know. So here goes.
I'm not at my programming station at the moment so I'm going to be very general with my example. Here's what I want to do[code]...
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Mar 19, 2012
This program is to display the monthly payment and amortization table for three mortgage loans with the same loan amount, but three different interest rates and terms.The ArrayIndex is not looping properly.The first loan displays correctly, but the other two only display the monthly payment and not the amortization table.[code]I originally had the For...Next loop in the DisplayAmortizationTable() sub with the Do Until loop nested in it. My instructor had me move the loop to the Main() sub, but it did not help.
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Mar 20, 2012
Im new to coding and this is my first post . so please forgive me if i end up sounding stupid i've been trying to get output of a for loop into a textbox or label for example
[Code]...
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Jun 10, 2011
using a for loop i want to be able to pause it, display string in text box for 60 secondsthen move to the next loop,change content of the string and display it again for 60 econds.this should go on till end of count.i am currently using a timer in do while loop to pause, but instead of displaying the string contents in each loop,it adds up all contents in all the loops and displays them at the end of count,not what i want. i tried using 'sleep'funtion but its behaving the same.below is the code:
For i = 1 To count Step 3
'empty string
disall = ""
[code]......
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Jan 20, 2010
I'm using visual studios 2008, VB9 and I am trying to write an app that basically performs calculations on a set of data input by a user. During the calculations, I want to display the data at each step, and have it retained in the display area on the GUI (not overwritten by the next data being displayed).
For example:
UserInput = 1
Do
UserInput += 1
[Code]....
I tried this, and other loop structures and can't seem to get things right. The actual app is a bit more sophisticated, but the example serves well for logical purposes.
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Nov 26, 2011
Quite a few threads on passing data from one form to another, but I'm struggling to work out how to share data between the two - back and forth.
For example:
Class1 is a class with 10 string properties
Form1 has 10 labels ("Label1", "Label2" etc) and a [Configure] button.
Form2 has 10 textboxes and a [Apply] button.
I want to load with Form1, and create an instance of Class1. Click the Configure button and load Form2, passing Class1. On Form2 I want to manually fill in the 10 textboxes and hit Apply. The Apply should update the Class1 instance and close the form.
Form1's Label controls should then be updated with the data from the Class1 instance.
I'm fine creating the forms and classes, as well as passing the class into Form2 with a custom Sub New(EmptyClass as Class1) constructor. This gets the empty class into Form2, but how can I get the populated class back to Form1?
As Form1 already exists I don't want to create a new instance with another custom Sub New(PopulatedClass as Class1)
It's also key to be able to use the Form2 multiple times, basically ending up with a Data class being displayed as part of Form1 but updated using Form2? (For example if the Class has already been created and populated with data when it's passed back to Form2 for the second time I would pre-load the Textboxes with the values already in the class).
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Mar 23, 2009
I'm sure this type of function is simple, but for the life of me, I can't get it.I have 3 forms. Main form holds a list box, which is my shopping cart.FormP holds the print books in a list box.FormA holds the audio books in a list box.I can send the books from forms a & b to the list box cart on main by way of formMain.ListBox.Items.Add(ListBox.SelectedItem.ToString())but I can't access the items once there and associate a cost to throw to subtotal.[code]
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Apr 17, 2009
how can i loop through all the forms in my application??
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Feb 8, 2009
However, it loops through does the first one .... then I have to click the button event again for it to get the 2nd one BUT THEN when I click button the 3rd time it doesnt do the third address it simply repeats number 2
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Nov 8, 2010
I am having trouble changing the text in a label. Can someone show me where the problem is?
Public Class Form1
Dim Tracker As Integer = 0
Dim Questions(10) As String
[code]....
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Oct 5, 2010
How can i display images in a picturebox using For Loop. Actually i've tried it before but only one image displays x times. What should i do so that all images will display?
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Jul 30, 2011
I'm a VB.Net newbie, and would like to write a small app that runs a While loop to check a DNS domain name, and exits once the domain has been registered.
I found code at How to Get Host Name and IP Address in VB.Net - .Net Articles & Samples to resolve the hostname and handle the "No such host is known" error if it still hasn't been registered, but I have a couple of issues:
1. How to make sure the GUI is correctly displayed even though there's an endless While loop? Should I use some kind of asynchronous call so that the window doesn't freeze?
2. I'd like the app to mimize to the icon bar, and have its window title display some status information ("Still waiting/Registered!") so that I can simply move the mouse over it and know whether the domain has finally been registered or not.
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