I have a form with several text boxes and check boxes.These are populated via a sql data reader during the form load event.
Private Sub TextFields_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles _
TxtBUsername.TextChanged, TxtBPassword.TextChanged, CBoxAccountDisabled.CheckedChanged
[code].....
Is there a way to find out if the "TextChanged" event is fired because the user is typing into a textbox or the programmer called myTextBox.Text = "something"? I don't want to react when the user is typing each letter into the textbox so I am using the "Validated" event to catch when the user is done so I can react. The problem is I don't have a way to catch when the programmer does "myTextbox.Text = "something". The only way I know to catch changes there is to use TextChanged but then I don't want to be reacting when the user is typing each letter into the textbox.
View 4 RepliesIn my asp.net application, i am using a lookup to enter data to a textbox.For making lookup i have used jscript.I have a button for this lookup from which i am entering data to this textbox.so, i am not entering values directly to the textbox.After entering values to textbox, the textchanged event is not working.What could be the reason?
View 1 RepliesI have a combobox that has a text portion that is clearing for unknown reasons and the TextChanged event is not firing.
View 9 RepliesI'm working in VB 2008 Express.
I have an MS Access DB with a Table setup with the columns that I need.
I have it linked into a form, with the requisite BindingSource, TableAdapter, BindingNavigator, etc.
On the form, I also have several textboxes linked back to the table. I can populate the table via the + (add new) button in the BindingNavigator and then filling in the textboxes (and saving of course).
Is there a way that I can put a button on the form and populate the table automatically? I want to do this via a textbox to control the number of records added - that way, I can put in an 8 and have 8 blank records added to the table via this one click (and don't have to enter the default info in for the 8 records one at a time).
I've attempted to do this by calling the BindingNavigatorAddNewItem_Click subroutine, filling in the textboxes and then calling MapBindingNavigatorSaveItem_Click subroutine, but this does not work.
I have started the familiarize myself with WPF and have gotten stuck with the ListView I've read a lot of documentation about binding and I can't seem to find how to populate a ListView programmatically. It seems like a lot of work to create the binding and classes, etc, just to fill a ListView.
1. If you want to populate a ListView with data that a user has inputted, is the correct way in WPF to populate the ListView with binded data?
2. How do you add items and subitems to a ListView in code? (There doesn't seem to be a subitems in WPF.)
I am using Visual Studio 10 and have run in to an issue that I cannot resolve on my own.When debugging one of my forms the app hangs on a text box control with no errors. But only if you change the text, or press the "Tab" key. The text box is in a group box with a range of other text boxes most with the same properties. All of the controls in this group are connected to an access database record, and formatted to accept the same type(s) of input.Here is the code associated with the control;
[/Private Sub MPhoneTxt_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MPhoneTxt.TextChanged
If UpdateCmd.Enabled = False Then
[code].....
How can I bypass the TextChanged event if I populate the textbox during loading?for exampleWhen the VB Win form application starts it loads several text boxes with deflt information.thus firing the TextChanged event. (which I don't want to happen)
View 6 Repliesi have one project any one textbox.i want to get the textbox value without textchanged event how to get the textbox value. means when i change the textbox value then the text changed event is fired but when i clicked one another textbox at that time i want to get the textbox value in vb.net
View 1 RepliesI want to let TextBox control TextChanged event fire only when there are more than one character in the TextBox.
View 2 RepliesI have a Textbox on my application that recieves data from another application via a sendmessage call from the other app.
I can see the data being entered in the textbox but the TextChanged event never fires when the text changes. I need to process the data that is sent but since the event does not fire I'm kinda stuck..
We have some code in the textCahanged event of a textbox. We only want to fire that code if the user types into the box, not if we change the text in the box programmatically. Can I detect what caused the text to change?
View 12 RepliesI have a TextBox called Social. As you type in a Social Security Number into the textbox, it formats itself into the standard Social Security Number Format (XXX-XX-XXXX). It automatically adds in the dashes after the third and fifth number, or corrects/removes the dashes if numbers are added or removed from in front of the dashes. Also I coded the script to record the caret's location so that the caret goes back to where the caret was before the adjustment in dashes.
I used Pos and PosHold to hold the caret's location.
The problems I am having are:If I remove a number before one of the dashes, the caret is reset to '0' from using break points, it seem to jump out of the if statement before setting the location of the caret. Sometimes when a number is removed from before the dashes, the dashes are removed like scripted but, the dash is not put back in the correct location. This seems to happen primarily if you have numbers passed the second dash.
Social_TextChanged
Private Sub Social_TextChanged(ByVal sender As Object, ByVal e As System.EventArgs) Handles Social.TextChanged
[Code].....
I want to modify this code or replace it. I want to override the the textbox's textchanged event in a user control.
Protected Overrides Sub OnTextChanged(ByVal e As System.Windows.Forms.ItemChangedEventArgs)
MyBase.OnTextChanged(e)
End Sub
[code]......
I have a MDIParent form and 2 child forms. One of them,form1, has a textbox for which certain validations are present in the validating event. The other one has a button on it. When I try to navigate from form1 to form2, the validating event is firing twice for the first time. Is there a way to make it fire only once. And also, this event fires whenever I try to close the mdi parent form Attached is a sample project.
View 2 RepliesI have a textbox on a tabcontrol page, and when someone tabs out of the textbox, it is suppose to move to the next tab. This was working great before I switched the form from a UserControl to an actual Form. This change did not change actual code. So now, I have tried everything. I have the textbox to set to AcceptTab = True, and I have KeyPreview = False (because if the form grabs the event before the textbox does, it would mess things up I am assuming).Here is my code for the textbox:
Private Sub txtMsgDTG_KeyDown(ByVal sender As Object, ByVal e As KeyEventArgs) Handles txtMsgDTG.KeyDown
'check for tabbed out
If e.KeyCode = Keys.Tab Then[code]......
I have created a custom validator for maximum characters for a multiline textbox in ASP.Net.Below is the code that I am using.
[Code]...
I want to populate the textboxs with the access databse fields when i select the combobox.
my combobox is populating but my txtunivdetails is not being populated. I am not able to find my error.
Private Sub UiComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
On Error Resume Next
[Code].....
I have a listbox, a textbox, and a button. The button populates the textbox with the selected item & value of the listbox. As below:
Protected Sub GetVariables_Click(ByVal sender As Object, ByVal e As EventArgs) Handles GetVariables.Click
Me.txtLetter.Text = lstNames.SelectedItem.ToString & lstNames.SelectedValue.ToString
End Sub
The problem I have, is that when doing this it reloads the page each time. Any way around this?
I have a custom text box component (inherits from system.windows.forms.textbox) that I created in vb.net (2005) that handles the input of numeric data. It works well.
I would like to suppress the validating and validated events from firing if the number hasn't changed. If a user is tabbing through the form and tabs from the text box, the validating/validated events are fired.
I was thinking that the text box could cache the value and compare it to what is listed in the text property. If they are different, then I would want the validating/validate events to fire. If they are the same, nothing is fired.
I can't seem to figure out how to suppress the event. I have tried overriding the OnValidating event. That didn't work.
Update:
Here is the custom text box class. The idea is that I want to cache the value of the text box on the validate event. Once the value is cached, the next time the user tabs through the box, the validating event will check to see if the _Cache is different from the .Text. If so that is when I would like to raise the validating event to the parent form (as well as the validated event). If the _cache is the same, then I don't want to raise the event to the form. Essentially the text box will work the same as a regular text box except that the validating and validated method are only raised to the form when the text has changed.
Public Class CustomTextBox
#Region "Class Level Variables"
Private _FirstClickCompleted As Boolean = False 'used to indicate that all of the text should be highlighted when the user box is clicked - only when the control has had focus shifted to it
[Code]....
I have a field in an access database with decimals in it. I am using ADO to read in the data and are trying to assign it to a textbox in a form. This works fine when its a whole number. But it doesnt seem to work when its a decimal for some reason.
I have declared the variable i have assigned the access field to as a double, but when i set up a test textbox which i point the variable at and times it by 1000, it doesnt work. Works perfectly when i change the access field entry to a whole number though.
This sounds like im not using the right syntax or something.
this is the scenario. I have 1 aspx file with a table in it. it has a .aspx.vb file behind it. i want to populate this table from the .vb code. the table shall have many lines (rows) but they should be in this format. also the checkbox data, textbox data and dropdownlist data comes from database behind. how should i go about this?
View 2 RepliesI am using a vb windows application I need to allow a user to enter their ID num in a text box and it need to automatically populate their date of birth
View 6 RepliesWhy is this code not working?
[code]...
I was thinking I should just change the value to "" when a null value has been read from the datasoure. But then I thought maybe there is a property that allows this. is there?
txtComments.DataBindings.Add("Text", rowEquipItem, "Comment")
How may i highlight the text when say, after a textbox is enabled after the click of a button? (programmatically or via the GUI) Missing out something very obvious here
View 2 RepliesI am adding a TextBox to my asp.net page programatically via a PlaceHolder Control. However when I set the TextMode value to MultiLine I get this error:System.FormatException: Input string was not in a correct format.
View 3 RepliesI am new in VB.NET 2008. how can programmatically bind a textBox to a BindingSource? As I could do that in Vb6 using Adodc in the ff code.
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Here is my code to programitically create a textbox on the fly
Dim a1_box As New TextBox
Me.Controls.Add(a1_box)
In another method I need to read the value entered by the user, but, a1_box is not a know item.
I want to set the font o a textbox created at runtime to Arial for example?
How do I do that?..