Interface And Graphics :: Disabling Button Before Executing VB Code To Prevent Duplicate Records?
Aug 5, 2008
I need to disable a button after its pressed so the user does not have the ability to click it again as this would replicate the process in some cases. After alot of searching I found some tips - alot of code I found I could not understand.This is what I have come up with:
[code]...
I also read somewhere that I should use: System.Threading.Thread.Sleep(1000) to delay the process or something - not entirely sure why I would do this though.Although, the problem with my above code is that when the code behind page performs validation checks, it exits sub before executing my INSERT SQL code - so when it does this it also disables the button.I am not entirely sure if the above method is fool proof or whether it is a **** piece of code that won't work 100% of the time.On another website I found a script to put on the actual HTML page with <script> tags:
[code]...
But although this works, it does not execute my VB code in the code behind page so I am a little confused where to go here.
View 1 Replies
ADVERTISEMENT
Feb 15, 2012
I need to disable a button after its pressed so the user does not have the ability to click it again as this would replicate the process in some cases.After alot of searching I found some tips - alot of code I found I could not understand.This is what I have come up with:
On page load:
If Me.Page.IsPostBack Then
'lblDetails.Text = "disabled"
[code]....
I also read somewhere that I should use: System.Threading.Thread.Sleep(1000) to delay the process or something - not entirely sure why I would do this though.Although, the problem with my above code is that when the code behind page performs validation checks, it exits sub before executing my INSERT SQL code - so when it does this it also disables the button.I am not entirely sure if the above method is fool proof or whether it is a **** piece of code that won't work 100% of the time.On another website I found a script to put on the actual HTML page with <script> tags:
Code:
<script type="text/javascript">
disableSubmit(frm) {
[code].....
View 17 Replies
May 3, 2012
How to make only one record at a time get inserted in the database table and also delete from the other table?
Once the details are filled ,I insert it in table1 as the new record and I delete the same record from table2.[code]...
View 1 Replies
Feb 7, 2009
how to prevent duplicate RECORDS in datagridview cell vb.net
View 2 Replies
Jan 2, 2009
How can I check if the data in a drag'n'drop event originates from the same component?I've created a component containing two ListViews and the ability to drag'ndrop between them.The problem occurs when a progrem uses more than one of these components, it is possible to drag from one component to another, I don't want that to be possible.[code]I thought the "And (m_DragSource Is lviewSelection Or m_DragSource Is lviewSelected)" in the first if would prevent dropping from other components but it doesn't. How to do this?
View 4 Replies
Feb 3, 2010
Private Sub CenterSearch_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCenterSearch.Click 'Center name is required. If it not there, ask for it.
[Code]...
View 2 Replies
Aug 7, 2010
[URL] This is for vb6, and I know this is a .net forum, but hopefully some one may know the answer as I have tried countless other places. The buttons appear properly after they are clicked or issued a .refresh command.
View 1 Replies
Jul 25, 2009
Ok..I think it's very simple but I'm still a begineerI'll try to make it clear I need to draw a rectangle when I click on the button..what is the required code?
Quote:
Public Class Form1
Protected Overrides Sub OnPaint(ByVal e As System.Windows.Forms.PaintEventArgs)
[code].....
View 1 Replies
Jan 13, 2011
I plan on using a scrollbar for, well, scrolling an image. The image is 200x500, however, the only visible area is 200x250.
So I set the max value to 250, and the min value to 0. The idea is that if I drag the scrollbar's button to the bottom, 250 pixels will have moved for the image, right?
But wait, the scrollbar's button is.... very small. And the scrollbar is actually pretty long. Is there a way to make the scrollbar's button longer?
View 1 Replies
Jan 11, 2009
I was wondering if there is a way to have a button/label that would change the selected item color of the combobox from the standard black into a certain color (say green), but not change all of the items' color into green. This is for a to-do list type of application where a user clicks the button to signify that the current item is finished..This is what I was thinking (not in VB code) When button1 is clicked, combobox1. selecteditem. color = green
View 1 Replies
Nov 13, 2008
This is VB 2008, under Vista. I can't seem to change the background color of a button without the gradient disappearing.Strangely enough, you can even set the background color to itself and the gradient disappears. How do you keep the gradient but change the color?
Here's an example:
Code:
Public Class Form1
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Button1.BackColor = Button1.BackColor ' This should do nothing!
[code]....
View 6 Replies
Mar 18, 2011
I can tell when the user clicks on my picturebox. Can I tell which mouse button was used? Left or right?
View 1 Replies
Aug 26, 2011
I have a form with buttons, and the user can change the colors of the buttons with the color dialog box for fun:
Button_Play.BackColor = ColorDialog.Color
There is a reset button to put the colors to how they were without any special coloring, but I can't get them to go back to how they originally looked.They go to gray in the middle, instead of the nice shaded blue/gray style. I have tried a few different things:
Button_Play.BackColor = Button.DefaultBackColor
Button_Play.BackColor = SystemColors.Control
Button_Play.BackColor = Color.Empty
I am using VB '08 Express on Win XP with the Desktop, Display Properties, Appearance, Windows and Buttons: set to Media Center Style and Color Scheme: set to Energy Blue. how to (with this theme) get the button to look like default after changing the color?
View 1 Replies
Aug 13, 2008
I need to visually moves the cursor using keyboard keys.
1) I need to get the mouse to where the button is
2) Simulate the mouse movement to the button from whereever it is
3) and simulate a button click.
Only after I select a button I can start drawing on my form. I have a code here, when I hold the Ctrl key and press the arrow keys, the mouse will start drawing straight lines. But what happen when I need to use controls like buttons, comboboxes etc.?
View 1 Replies
Jan 2, 2012
i want to make a class for a custom button for which the user of the class can choose his own images for Normal, mouse over and mouse down state.
View 5 Replies
Dec 12, 2008
im making a program that needs to make a new button for each .exe file in a directory? Kinda similar to PortableApps program that will recognize each program in the directory.
View 3 Replies
Nov 20, 2008
how to enable the "import" button when at least one of the checkboxes is checked.I have two buttons : "Deselect all" and "Select All" for the checking of the boxes, to import the specific files' data they want to Excel. (the files are in listbox, and the checked boxes is for selecting the files' parameters that they want to see in excel)
One option:When the user deselect all, the "import" button is suppose to be disable to prevent the user from importing the files' data parameters.
2nd option:(if i do not want to disable the import button) or show message that they have to select at least one box and at the same time, prevent the import button to work if there's no checked checkbox. So my deselect all button code :
Code:
CO2checkbox.Checked = False
NH3checkbox.Checked = False
DBcheckbox.Checked = False
[code]....
but the button still remain disabled if I click "unchecked all" button and then checked at least one box. how do I enable it?And how do i...show error message and prevent the files' data to be imported when the user click "import" when there's no checked checkbox if I choose the alternative option of using message to alert them without disabling the button and yet prevent importing of data?
PS: If I did not click "deselect all" button but click the "select all" button, the import button is enabled and working.
View 12 Replies
Feb 4, 2011
I'm trying to find a script to create a slider button.
View 2 Replies
Jan 21, 2010
I'm developing a GUI for a touchscreen, so when user wants to scroll he/she uses their fingers. Now the thing is that the scrollbar width (with the vertical scrollbar) IS adjustable but the button stays the same height and isn't sufficient for a finger. So the question is : Are the buttons in the scrollbar allso adjustable in size/dimensions.
[Code]...
View 5 Replies
Jun 5, 2009
I was unable to see the code generated by vb for form initialization automatic code generated by vb how can i see it?
View 1 Replies
Jan 16, 2011
I have a button with DialogResult OK set.
I'm using the following code to try and do validation[code]...
View 2 Replies
Mar 31, 2012
I've been trying to get some help for this in another thread,but it looks like it's a task that is going to need a wider audience to try and find someone who knows something about writing/creating procedural textures at the pixel level in VB.Net. The VB6 example I'm trying to convert to VB.Net is attached to this post.
[Code]...
View 6 Replies
Mar 10, 2009
Is there an easy way to display the rgb code of system colors in VB2008?
That is, I am looking for some code that will retrieve the names of the colors that are used in the system colors and display their rgb codes (and maybe show a sample), so I could display, for example, what the rgb code for "control" is.
View 1 Replies
Nov 13, 2010
When a button is focused by pressing Tab key, a rectangle appears on it. Even if the button's TabStop property is set to false, when the button is clicked with mouse the rectangle appears. Is it possible to
stop the rectangle from appearing?
View 2 Replies
Apr 20, 2009
below is my code for copying an image from a form to send it to the printer.it works but it tends to be a little blurry. is there anyway to make it sharper?
Bmp = New Bitmap(Me.ClientSize.Width, Me.ClientSize.Height)
Bmp = New Bitmap(800, 500)
Dim G As Graphics = Graphics.FromImage(Bmp)
G.CopyFromScreen(Me.PointToScreen(Me.ClientRectangle.Location), New Point(0, 0), Me.ClientSize)
View 6 Replies
Aug 19, 2010
I'm trying to figure out some simple code to detect when a pixel changes color anywhere on the screen. Maybe with just a msgbox popup when it changes.
View 2 Replies
May 11, 2008
Does anyone know how to turn off the blank space delimiter of a dot? I have no idea how I turned it on, but now there's a dot where every whitespace charater would be in the IDE's code window.
View 2 Replies
Apr 17, 2010
I am working on creating a program that records animal data (wombats) and stores it into a database, using vb.net. I am trying to add new records into a database but every time I click add, to execute that, there are duplicate records that gets added. How do i write the code so itonly adds it one time. I am using a data reader. Here is the
[Code]...
View 4 Replies
Jan 28, 2011
I have a button and various other controls that when clicked, calls as sub. However if the user clicks the button or any of the other controls multiple times, the sub appears to 'stack up'. For example, if I click the button 10 times, and then some of the menu items that trigger it 20 times, the sub would 'stack up' and execute 30 times total. How can I have the sub cancel calls to itself if its called again? I basically only want the latest call to it to count.
Heres code to reproduce it. Just a button on a form.
Dim intTotalTimesClicked As Integer = 0
Private Sub Button1_Click(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles Button1.Click
BlastOfNumbers()
[Code] .....
View 12 Replies
Aug 14, 2008
How can I set a button, so that when it is pressed, it stays in the pressed down graphic state. Then when pressed again it returns to the normal not-pressed visual.Make a button stay like this until pressed again: url....
View 3 Replies
