Detect When The User Has Changed The Content Of A Textbox?
Feb 26, 2011
I want to detect when the user has changed the content of a Textbox.
The following does not work for me, because: When the user navigates through the database (using my navigation buttons), the textbox is also changed, but NOT by the user making input. I would only like to know when the user EDITED the Textbox.
Private Sub mskStudentNumber_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles mskStudentNumber.TextChanged
If Not Movement Then '' If not navigation
I have some textboxes bound to a bindingsource and bindingnavigator.
I want to detect when the values have changed and prompt the users to confrim if they want to update.
When the form is first initalised and when then binding navigator moves to the next record the text_changed event fires on textbox where I have a boolean to determine if things have changed.
Is there a way to set my boolean only when valid data changes have occured or a better way to detect if things have changed
application i'm developing in school.I am trying to make the program detect when the user copies new content to the clipboard,when this happens I want the program to check the data type,
I want text content to be written to a text file.Images can be left alone.if a file or folder is copied, i want the location of the copied file and the file name to be written to a text file.
I only really need help in getting the program to detect a clipboard modification, preferably with the AddHandler statement.
OK so after a week of aggravating, hair pulling, disaster of trying to figure out what should be simple tasks but beat me down! Ok so I wanted to create a application that would, somewhat manage the users own collection of video games (Lame i know ) you add your games to a listview item, with an image and some sub items, viewing details, using a textbox to search your games... etc i hope you get it
Ok so what i cannot figure out, or find by combing the internet! is how to save all new items the user adds... And including: the item, all the sub items and the picture thats associated with the item.! Instead of posting the code, i posted the application Source code itself here:Source Code , I also started a project here: Codeplex
Later i eventually was thinkin of ading a "wish list" feature where you could add the games you want to get later and also tag it with a release date so when the date comes up, it will let you know, maybe through some alarming way or textbox somehwere... IF you guys want to make it better or fix it! go ahead, i just want this app to save upon EXIT or directing me in the right direction would be VERY VERY much appreciated!
'm developing multi user systems where for example I could have a form with a list of users on it. If a user on another system adds a user then I would ideally like for the new user to show up on my list reasonably soon. While that could be done by getting refreshing the list every couple of seconds I would prefer to be able to identify that a change has happened and then be able to decide what to do from there (whether that be actually refresh the list or inform the user that a change has happened and ask them what to do).
The only way that I can think of doing this is to store the information that was originally retrieved and then every x number of seconds requery the database and then compare the two sets of data, if there are differences then raise an event.
I've finally cracked how to detect that Form1's size has changed?[code]Now I have another problem, my intention was to adjust the font sizes of some labels, buttons and textboxes to reflect the change in form1's size.I find that font size is Read only, so I thought OK then, I'll adjust the Bold: Wrong! bold is also Read only.Ideally I'd like to leave the bold on and adjust the character size.The controls all change size correctly within the minimum width and height restrictions of the form, but sadly, the larger some controls get their texts start to look like a pea on a drum.
I have written a multithreaded crawler and the process is simply creating threads and having them access a list of urls to crawl. They then access the urls and parse the html content. All this seems to work fine. Now when I need to write to tables in a database is when I experience issues. I have 2 declared arraylists that will contain the content each thread parse. The first arraylist is simply the rss feed links and the other arraylist contains the different posts. I then use a for each loop to iterate one while sequentially incrementing the other and writing to the database. My problem is that each time a new thread accesses one of the lists the content is changed and this affects the iteration. I tried using nested loops but it did not work before and this works fine using a single thread.
Here is my
SyncLock dlock For Each rsslink As String In finallinks postlink = finalposts.Item(i)
[CODE]...
Finallinks and finalposts are the two arraylists. I did not include the rest of the code which shows the threads working but this is the essential part where my error occurs which is basically here postlink = finalposts.Item(i) i = i + 1
ERROR: index was out of range. Must be non-negative and less than the size of the collection. Parameter name:index
I know that using Dim currUser As String = Request.ServerVariables("LOGON_USER") retunrs the DomainUsername, but I want to know what Group that user is in say in Active Directory.
In my program I've a list of "Time Zone" and I want to make one of that as the default Time Zone when an end user uses the program - ie: everytime he starts the program that Time Zone should be selected ( Of course, he should be able to select another Time Zone temporarily, but his default selection shouldn't be changed unless he wants to do so by changing the default one).
And another user should be able to make another Time Zone as his default Time Zone.
In my program, I give the Time Zones in a ComboBox as follows:
Ok, I have been going around and around with this for hours (Searching, etc). This is what I want to do, I want to load data into a Text Box and if the user changes the text in the Text Box I want to be able to save the new text.
My problem in the TxtBox_TextChanged event the data contained in the txtNarrative Text box is the new data that the user typed in (<>ABCD) but in the btnSubmit_Click event the data contained in txtNarrative is the original value ABCD.
<%@ Page Language="vb" AutoEventWireup="false" CodeBehind="Default.aspx.vb" Inherits="WorkBench_VBNet._Default" %> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
I have the following save function shown below, when called some tables get updated. Before fields are updated specifically to TblOracleNos what I want to do is when the text in TxtOracleNo has been changed and the save function called a MsgBox pops saying "Oracle number has been changed".
Public Sub Save() Dim conn As SqlConnection = GetDbConnection() Dim query As String
I have the following save function shown below, when called some tables get updated. Before fields are updated specifically to TblOracleNos what I want to do is when the text in TxtOracleNo has been changed and the save function called a MsgBox pops saying"Oracle number has been changed".
Public Sub Save() Dim conn As SqlConnection = GetDbConnection() Dim query As String Dim cmd As New SqlCommand
I've never come across this before:I have a series of text boxes. The text of these boxes get set on page load. then I have a submit button that calls a sub to update the table with the new values (text) in the text box. The problem is it is keeping the original text not the text that is CURRENTLY in the textbox. Anyone come across this before? Or know how to get round it?
Is there a way to check if the user has changed the value of a textbox?I try to acces a variable in one of my methods to compare against the value but I can not seem to be able to access it?
I have the following save function shown below, when called some tables get updated. Before fields are updated specifically to TblOracleNos what I want to do is when the text in TxtOracleNo has been changed and the save function called a MsgBox pops saying "Oracle number has been changed".
Public Sub Save() Dim conn As SqlConnection = GetDbConnection() Dim query As String Dim cmd As New SqlCommand If TxtNumPats.Text >= "1" Then [Code] .....
I have a form that builds and populates dynamic text boxes from parsing a file. There is a "Last Name" text box that when populated, also labels a tab page with the name. After the form is populated, the user can change data as they desire but I was wondering how to update the tab page text when the user updates the last name text box? All the controls are built in code.
How do I check if the original value of a text box has been modified?
I have a few textbox controls on a form. When form loads; user enters data in these fields but later change his mind and modifies what was entered earlier. I need to know which textbox or txtboxes were modified.
I have 1 Table Called "Menu" there are some textboxes and a combobox. I want to fill data in the Textbox called "Menu_Rate" on Selection of combobox selected item & coressponding rate of the Menu shoud be displayed in the textbox.
This is my Code con.ConnectionString = "Data Source=localhost;Integrated Security=true;Initial Catalog=Restaurant" cmd.CommandText = "select Menu_Rate from Menu where Menu_Name='" & cbMenu.SelectedItem & "'"
I try to make a WFA for filling, reading etc. to a database. I want to compare 2 dates (actually 1 date is changed by 42 days) that are chosen by a user through a datetimepicker. After comparing the 2 dates the "newest" date has to show up in a non editable textbox. This Is my code (of course I have 2 subs for the datetimepickers as well).
Private Sub AwbdatumTextBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AwbdatumTextBox.TextChanged Dim DatumbinnenkomstDateTimePicker As DateTime
First off, I'm using Visual Basic 2010. I've done pretty well with starting out with some basic things. Copying some codes from tutorials to learn what each code does. But lately I've been venturing into possibilities of ideas in my head, and the recent idea is very simple, but I'm not sure how to approach it.
I have a main form that has options to open up other forms. And in one of those other forms, I want to make it so that you can enter text into a textbox, then click a button to "save" the textbox's content so that anytime the program starts, that previously saved content of the textbox will be the same.
And on top of that, I want to relate the textbox back to the code in the main form.
If I didn't explain that well enough, I'm working on making an extremely basic web-browser (a big jump from what I've been doing), and I added the option under a menustrip to open up Form5 to change the home-page.
Since my last thread hasn't been answered and I simply cannot wait until it gets answered, how can I validade what is being written on a textbox?
I need to know when the user types a "-" (minus) char. And when he do so, an message appears (preferably an ballon or a tooltip) and says that is illegal to type this char in particular.
I'm working on a self motivated project; basically I want to be able to navigate to a website, for example,there I want to be able to able to record my actions - for example:
Step 1) Right Click & save on celebrity photo Step 2) highlight & save the photo's description Step 3) Click on Next link and repeat
