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?
View 1 RepliesHow 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 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
I am trying to do an if/then to check a textbox for text. I have a form that has name, address, etc. I need to make sure the form has a name in the txtName before it continues on.basically
If txtName has text Then
'continue about your business.
Else
err.message ("you need text.")
end if
I'm making a program and i want to make it so it checks if the textbox as any text entered at all [code]...
View 3 RepliesI am trying to do an if/then to check a textbox for text. I have a form that has name, address, etc. I need to make sure the form has a name in the txtName before it continues on.
basically
If txtName has text Then
'continue about your business.
Else
err.message ("you need text.")
end if
If in textbox the default textbox value id 1,2,3,4,5,6 ...... upto 55then the following checkboxes would be checked according to the text display in text box...if textbox1.text =1,2,3 then in my webform checkbox1, checkbox2, checkbox3 would be checked ... on page load event...
View 2 RepliesI'm struggling with my computing coursework in college and I though My issue is simple but I can't get it right. I need to validate the text into a textbox and check that it contains ONLY alphanumeric characters, but it MUST contain both, not either numeric or alphabetic, but some of each.The textbox should store information about a Street address, that's why both the street Name and the property Number have to be input. Spaces " " and points "." should also be allowed.If it helps, something like "12" or "St. Davis Street" should NOT pass the validation checks, whereas "St. Davis Street 12" will do.I would like to get it done with regular expression as I've been using them throughout my work, but I don't mind other solutions.I'm using Visual Studio 2010 Professional, 4.0 framework and Visual Basic.
View 2 RepliesOn my form with my detailed layout of my database in textboxes i can change my data or add new record.
how can i verify if there was any changes to a record when the form is being closed or when my cancel button is pressed.
i want to create a message box that warns tha there hav been changes made should it be saved yes or no
I am trying to figure out how to read a text file and check the value entered into a textbox to see if it already exists. Its basically a validation list.
I found some code on how to read a text file, but I do not know what to do with the information.
Sub Main()
If RadioButton1.Focus = True Then
'Check TextBox1 value against list of known part numbers
[Code]...
How do I compare the textbox value to a line read from the file and stop if there is a match?
I will try the way of the following code:
'Click on Button1 spell checks Text1 textbox
Dim strResultText As String
Dim sc As New SpellChecker
[Code]....
I can identify the error.But I don't know.
Using .Net, I need to generate a response based on only the checkboxes on my form that have had there states changed. So how do I know if the check box has changed from its previous value before submission. I can't use the onchange event because the user may check multiple boxes before submitting.
View 3 RepliesI am trying to check if an image has been changed from a picturebox in a if statement. If I cant check if a image has been changed then can I check if a picturebox been clicked.
View 8 RepliesI have a window which has 8 items in a listview along with 2 radio buttons below the listview. The user is able to select one or more selections in the listview and turn the selection on or off with the radio buttons(live, prior to hitting the submit button), my question is how do I tell which selection was changed? I was going to put the one or more selections into a string/array and use that later for some messages once the user hits the submit button. I can almost think of it but can't quite get there, i'll be using an if/else with the .selected option in listview items but am not sure how to tell if the user, say,goes back and changes the option from On to Off(Off originally)to remove that option from the array.
View 2 RepliesWhen DateTimePicker check state changed,ValueChanged and TextChanged events don't work always.
View 8 RepliesHow Can I have Check items in a Listbox for a text that is = to Label/Textbox
I want to control a Counter I have
Label.Text = Val(Label.Text) + 1
To add the Count
I am new to Win Forms, I have a scenario here..When User enter ID in a textbox, I want to check that value in database and get the name for that ID before submitting the Submit Button.
View 1 RepliesIm trying to use this code to check if files in a directory equal to the text typed in these textboxes. The files end with extension ".ldb". The code doesnt seem to work
View 11 RepliesIs there a way to check if the date time picker has been changed? I have a date time picker set to allow a person to put in their date of birth and I have it set to no greater date than 12/1/1992, but I need to check that the user has actually selected a date before the form is submitted. Can it be checked?
View 6 RepliesIm using VB.NET 2008
I know I can exit a program by using the End statement.
But i was wanting to know how to check to see if the data has been changed since it was loaded and bring up a diaglog box up saying the data has been changed or not saved, would you like to save the data before exiting?
I will have a form that will have a yes, no, and cancel buttons.
Im using VB.NET 2008 I know I can exit a program by using the End statement.But i was wanting to know how to check to see if the data has been changed since it was loaded and bring up a diaglog box up saying the data has been changed or not saved, would you like to save the data before exiting?
I will have a form that will have a yes, no, and cancel buttons.
I have a problem with the Validation of a Integer-Field in my application.Its an Access DB on a Windows Form.I implemented the validation in DataSet.vb using an ErrorProvider on my Form.The field name is FNr and should not accept duplicate numbers.If the field value is changed, a query checks if the number already exists in the Datatable and if so it sets the error on that field.If the user tries to change the field to a number which is a duplicate I want to cancel the input back to the original number. This works but the
Error message is still shown by the ErrorProvider.The code is partially in DataSet.vb and in Form.vb
Public Class Funktionen
Private Sub FunktionenBindingNavigatorSaveItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles FunktionenBindingNavigatorSaveItem.Click
Me.Validate()[code]......
I have a WinForms app with a datagridview and a bindingsource. I want the user to confirm changes before I save them to the database. don't want to pop up the confirmation dialog unless I know the user has made changes. So I need a way to check if changes have been made.
View 2 RepliesI'm Making a Simple syntax highlighter and I'm Doing the highlighting in the text Changed event of a RTB and for obvious reasons I can't re highlight the whole document each time someone presses a key so i highlight one line each time the text changes. But this creates a Problem. If someone pastes code into the RichTextBox It only highlights the last Line. So is there a way to get if the user typed the text in with his keyboard or pasted it from the clipboard in the text Changed event?
View 6 RepliesI am currently using DevExpress 11.2 within Visual Studio 2010. Currently I am using two DevExpress.XtraBars.BarEditItem which gives me two check boxes (with a label) in my menu bar (DevExpress.XtraBars.Bar) at the top of my windows form. Right now I have working code so that when one checkbox is clicked it unchecks/checks the other checkbox and executes code specific to that box. This works.
My problem is that the DevExpress.XtraBars.BarEditItem does not have a check changed event. Currently I am using the EditValueChanged event as the checked check box is set to True and the unchecked checkbox is set to false. However the EditValueChanged event isn't called until the checkbox looses focus. This doesn't work for me as I want it instantaneous. I looked into the itemClick and ItemPress events but they don't give me the new editvalue and if someone presses on the caption (rather than the box portion) it still fires. Is there someway to get the event right away??
I am looking in two different older projects (both in Visual Studio 2008 and using DevExpress 9.2 and 10.2) and it looks like it does everything the same way as me yet the EditValueChanged event fires right away without any lose of focus.
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">
[Code]....
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
[Code]......
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
[code]....
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?
[Code]...
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] .....