Programmatically Created TextBox Retains Text Value After PostBack Even If Control Is Cleared?
Jan 21, 2011
I have a drop down menu, and based on which item is selected, I call a web service and then dynamically create some text boxes.The first time I drop down the menu and select an item, it works perfectly, and the text boxes are created and populated dynamically. However, the next time I drop down the menu (after the first postback), and select something different..fter the second postback, the original values remain in the textboxes.
View 2 Replies
ADVERTISEMENT
Apr 8, 2011
I have a FormView bound to a SqlDataSource on my page. One of the controls on the FormView is a DropDownList, which gets populated on Page_Load (it's being populated with a list of file names from a specific folder).
Everything goes well when the page first loads. I am able to view the list of files, select one and, upon hitting the "save" button, store the correct filename in the database. However, when the page refreshes after the post back - the DropDownList is empty.
[Code]...
View 1 Replies
Oct 9, 2009
I am using ASP.NET. I am not sure what you will call this but I would like text to be displayed in my text box called txtName. So when the form load the text box will have faded text that will say "Required". Then when the user click inside the text box i want the user to place a value inside the text box. Is this possible in ASP.NET? If so, how can this be done????
View 5 Replies
Sep 1, 2011
How can I stop the text of a button control from being cleared when I override OnBackgroundPaint?
View 3 Replies
Jul 13, 2010
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.
View 4 Replies
Mar 9, 2010
I have a aspx page, in that page i have an Iframe. In the Iframe i do some stuff in code behind and when it is done I would like to do a postback from the aspx. In other words, Is it possible to do a postback programatically from the code behind of the iframe to the parent page?
View 4 Replies
Jul 6, 2011
I have a form that has an array of dynamically created labels of varying size based on a search from a database. The problem I'm having is that when the user searches for a different term, it looks like some of the labels don't get new values. Here's my code for adding the labels:
If rdr.HasRows Then
ReDim Preserve entities(cnt)
While rdr.Read()
[Code].....
I've tried for loop over the controls in panel1 to dispose of any still on there in both the page_load and page_init subs, but neither had an effect. I don't know if it might have something to do with controls having the same IDs after the postback.
View 2 Replies
Feb 16, 2009
I 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 Replies
Mar 8, 2009
I have a page that contains some dynamically created controls (TextBox and DropDownList). When a postback occurs, the TextBoxes keep their values, but the DropDownLists lose their ListItems. This is quite confusing, since the page level DropDownList also keeps its ListItems.
<%@ Page Language="VB"%>
<script runat="server">
Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs)
[Code].....
View 5 Replies
Sep 15, 2011
I have a strange behavior with a dynamically created TextBox-Control. The control is created in the handler of the Load-event of a dialog-form like this:
[Code]...
Now the situation is, that in most cases it works fine. But a few of my customers report that the TextBox not appears on their dialog - it's not there! That's all, nothing more to say.hints or reports about known pitfalls with dynamically created controls which could explain this (sometimes) strange behavior and how I could fix it (I have to create this control dynamically due to some reasons).
BTW: The program is built with Visual Basic 2005. And the customers with trouble are spread about the OS's (XP, Vista, 7).
View 6 Replies
Dec 30, 2011
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 Replies
Apr 21, 2011
i want to get the text that is input by the user to the textbox and use it in the parameter but why can i done this.. i declare a name for the textbox that i created during runtime but i cannot get what the text that input by the user.i use the (textbox name that will create during runtime).text but it gives me a blue line.
View 7 Replies
Apr 12, 2010
Is there a way to enter text in a text box programatically, without the "changed" event being fired? Or do I have to use a flag to indicate that nothing should be done when the text is changed by the program?
View 4 Replies
May 28, 2011
Can I let my program select an item in a listbox based on a string (f.e. textbox.text)?So basicly, if an item in my listbox containst a certain string (text from a textbox), it should select that item..
I've been searching for a while, but nothing is doing the job.. Could anyone give me an example of this?
View 5 Replies
Jul 28, 2009
This is my first post on this forum, so please excuse me if I'm posting wrong. Anyway, I've been having an issue that I've never seen before and is driving me nut, I have a windows form on which I have placed many textboxes that display information from a MS SQL database. The user can then change these values and hit a "save" button which writes the changes to the database. I also have certain textboxes that with the "on leave" event (after a user enters a possible new value) trigger a method that recalculates some of the other fields based on the new information. Hopefully that all makes sense.
So the problem is, when I run through this "recalc" method the first time around, it doesn't update those textboxes that it's supposed to. However, when I put a breakpoint in and debug through it, the debugger shows it putting in the correct values into the textboxes. It's just as soon as the method is done, it puts them back to blank, or whatever they were before
'Rebind stuff here
lblCabinets.Text = curMfg.ToString("c")
txtCabinets.Text = curMfg.ToString("c")
[code].....
View 16 Replies
May 14, 2012
So I am trying to change the directory where the files are beeing saved. I've made a file where the location is saved. But for some reason, when I have saved the new location and restart the application, the file is is cleared, leaving it empty.
Show
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[Code]....
View 3 Replies
May 11, 2011
Trying to write my program in vb.net 2010. I have read my 2 books and have been playing with the code a bit. Got streamreader and writer and My Namespace understood as far as text files go. Now I'm trying to get all my textboxes in tabcontrol tabpage1 to be cleared of text thru the For Each loop.
I've tried various ways and keep getting invalidcastexception error. I even changed the tabcontrol and tabpage modifiers to public. That did not work either.
[CODE]:....................
I thought the code would not only clear all textboxes on tabpage1 but on all the tabpages. The help tells me that "When casting from a number, the value must be a number less than infinity and to make sure the source type is convertible to the destination type. I have three tabpages and that is definitly less than infinity. The source type and destination type puzzle me a bit.
Here is what I got using intellisense, however it not only clears the textboxes of text on tabpage1, but it clears the labels and buttons of text too so it is not a perfect solution.
[CODE]:............................
View 8 Replies
Jul 15, 2011
I have a child aspx page in an iFrame. There are a few textboxes, which are populated in the page load event.
There is also a LinkButton which the user clicks when s/he is finished editing the fields. There are some javascript functions and other things going on, so a full postback (ie: asp button) is out of the question.
Problem is, I need to reference the textboxes NEW values (user changes) after the linkbutton is clicked.
After playing with the interface a bit further, I realized the Page_Load event was firing as soon as the LinkButton was clicked. Of course this is where the data is initially loaded, so any changes the user made is immediately written over. Current plan of attack is to create an IsLoaded cookie value and check if true before the mentioned code executes.
View 2 Replies
May 5, 2010
How to programmatically change foreground color and make bold text in individual cell location on DataGridView control (Visual Basic)?
I use "dgMatrix.Rows(r).Cells(c).Value = x" to assign individual numeric values to individual cells in a DataGridView control. My question; is there a similar way to change foreground color and make bold the text in this cell, by specifying the individual row/column cell location?
For example; for cell (row 3, col 5) in the DataGridView make text in cell say red and bold or blue and bold so as to highlight and distinguish individual cell contents. As needed, I will also need to reset these properties (foreground back to automatic/black and font from bold back to regular); the reset could be done globally to the whole DataGridView as opposed to indiviaually by cell.
View 1 Replies
Apr 4, 2011
After searching Google, and finding only answers to XML indent, "just use Visual Studio's auto indent" and "that would be crazy to write your own auto-indenter" I've decided to come to the good place: StackOverflow.Question:
1. How do I add an 'indent' to a programmatically created file?I would be generating the files via the System.IO class / streamwriter, unless someone can tell me of a better way, I just want to generate a file from my asp.net page, a windows app or possible a batch file (well, maybe not this last one)... to generate a class file, such as Employee.vb OR EmployeeDAL.vb
[Code]...
View 2 Replies
Feb 21, 2009
In my program it detects if there is more than one monitor connected. It then creates a form on each monitor screen and you just click on the screen that you want the program to run on.
Here's where I'm having a problem. Everything works great, but when I load my MAIN form how would I call those programmatically created forms? I can't just do frmYou.close.
Here's the code I use to create the forms.
Public myScreen As New Point
Public ScreenReady As Boolean = False
Public sX As Integer'holds screen x width
Public sY As Integer'holds screen y height
[Code].....
View 2 Replies
May 11, 2012
I have an asp.net page with a button that adds an additional row to a gridview for input to the database. The gridview consists of 3 textboxes(template fields), when I add a row the information already entered somehow disappears on the postback. I want the button to add additional rows without disspelling the data in the other rows, until I hit the submit button. Here's my code
Private Sub AddNewRowToGrid()
Dim rowIndex As Integer = 0
If ViewState("CurrentTable") IsNot Nothing Then
[Code].....
View 1 Replies
Jun 8, 2012
I need to create text box at a run time.
I found the following VB NET code:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Dim textbox1 As New TextBox
[Code].....
When this row GroupBox1.Controls.Add(textbox1) and GroupBox control are being deleted from Form, the TextBox isn't created on the Form after the event is fired.
View 1 Replies
Dec 17, 2009
how to connect a SQL Table to a DataGridView that was previously created programmatically. Basically, at run-time the user names and creates several empty SQL Tables and DataGridViews. After that the user selects from a combobox the name of the SQL Table and DataGridView that they want to import data into, then clicks a button named "Import"...after clicking "Import" the user navigates to an Excel file, chooses a worksheet, clicks a "Continue" button and then the code successfully connects to the Excel import file and SQLBulkCopies the data to the SQL Table...next I need the imported data in the SQL Table update to the DataGridView...this is the part I can't figure out.
The challenge is the datagridview isn't hard coded it was created and named programmatically at runtime. So now the user selects the name of the SQL Table the data resides in and the name of the DataGridView from the combobox "moduletableCB" and I need the code to update the datagridview.
[Code]...
View 3 Replies
Feb 22, 2009
Now everybody knows that creating GUIs that have lots of repeated elements that are evenly spaced by hand is for chumps; all the cool kids use loops and add them at runtime. Given that being one of the cool kids is one of my top priorities I decided to give this a go - as my current project involves creating a grid of check boxes and then chunking them together under one event handler. In my experience - an nice effective way of dealing with grid like structures (2D arrays if you will) is to use nested loops such as:
For intY = 0 To 9
For intX = 0 To 9
Dim chk As New CheckBox
[code].....
View 3 Replies
Jun 10, 2011
I have programmatically created a listview in n # of tabpages to display information gathered from an SQL database.Once created, i want the user to be able to select an item from any of the listview's. How can i reference the selected item?[code...]
All i want is to know that when a button control is clicked, which item is being selected in which listview?
View 1 Replies
Aug 16, 2011
I'm having a weird problem with a custom Web Control in an ASP.NET forms application. For a web application, I figured that it would save me a lot of time to create a class which inherits from CompositeControl which combines a label with some other control such as a TextBox or DropDownList. This composite control has several properties that wrap properties of the underlying properties (e.g.: EnteredText wraps TextBox.Text). The controls can be used for databinding in the same way as the regular ones, but instead of txtBox.Text = someObject.someProperty you use compositeControl.EnteredText = someObject.someProperty. These controls are then used on ASPX pages and ASCX user controls.
[Code].....
View 1 Replies
Sep 3, 2011
Say I have an object that I dynamically create. For example, say I create a button called "MyButton":
[Code]...
View 1 Replies
Sep 11, 2009
I have code that refers to controls like buttons and labels and textboxes (obviously), but i want to create them programatically, how can i create a button or label that is on a form that has also been created programatically. Here is what i have:
Dim frmIndashone As Windows.Forms.Form
Dim vscPage As Windows.Forms.ScrollBar
Dim lblPageNum As Windows.Forms.Label
Dim txtVector As Windows.Forms.TextBox
Dim txtPageCode As Windows.Forms.TextBox
I am asking because i have a With statement that assigns different values to the different things that looks like this below:
RaiseEvent Load(frmIndashone)
With frmIndashone
.vscPage.min = 1
[code]....
But i am told on everyline of the second snippet that vdcPage, lblPageNum, txtVector and txtPageCode are not members of windows.Forms.Form, How can i make them members?
View 6 Replies
May 7, 2012
I have programmatically created a new project from a windows application. I now want to programmatically add a form to this project that already has some data bound controls on it.
View 4 Replies
