I have two richtextboxes, richtextbox1 and richtextbox2 on top of richtextbox1 with richtextbox2.visible = false on form load. Whatever is input in richtextbox1 is placed in an array when rictextbox1 loses focus. Now I have a checkbox that when enabled, hides richtextbox1 and shows richtextbox2. On the first time richtextbox2 is shown, i want it to display the contents of richtextbox1. This is achieved by setting a boolean flag (firsttime=true) on form load, then in the checkbox code if firsttime = true, it displays content of richtextbox1 and sets firsttime to false.
I have some richtextboxes which display contents of a jagged array. When the RTB loses focus, contents of the RTB are placed in the array (so new entries in rtb are updated in the array). This works OK with moderate numbers (for example jagged array of type (200)(){}) but in a situation where the array is (1500)(){} the rtb takes approx 3-4 seconds to reload when it loses focus. I was thinking of eliminating some lostfocus of triggering with this logic
On RTB LostFocus If 'nothing was changed in the RTB' Then Return
[code]....
Nothing was changed in the RTB means that the user Focused in the RTB, scrolled around, but did not change the content in any way. How would I achieve that codewise? In addition, is there a better way to keep the RTB updated with it's corresponding jagged array from LostFocus?
I want to assign a string value to a variable in the DataGridView LostFocus event. I found that I can't just do variable = "string value, it will give me the "Unable to cast object of type 'system.eventargs' to type 'system.windows.forms.datagridviewcelleventargs'" error.
The function created by double-clicking on the datagridview is:
Private Sub DataGridViewInvoice_LostFocus(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridViewInvoice.LostFocus
Have a project which, in one place, has a form with a number of textboxes on it to receive user input. My intention is that, when user tabs out of one box into the next in the sequence, a checking subroutine is called via the textbox.lostfocus event. When I run the app, which this procedure is called by tabbing out of, say, txtTitle without entering any data, I get the Msgbox message, but it refers to the next textbox (txtFName).
It would appear that the focus moves into the next textbox before the lostfocus event is dealt with. Consequently, when the Msgbox opens, it takes the focus away from the next textbox and fires its lostfocus even, which is processed. OK-ing the warning here causes the initial lostfocus event to be processed and the Msgbox shows again. Exiting the sub for the second time leaves the focus in the second textbox. If I then use the mouse to move the focus back to the first box, I fire yet another lostfocus event for the second textbox, etc, etc
How can I trap the lostfocus event and deal with it BEFORE the focus moves into a subsequent control?
With a listbox visible, I have clicked on the windows form hoping to use the listbox.lostfocus event to let me hide the listbox - but the event does not occur. I suppose I can use the form.click event to hide the listbox, but how would I get the form to accept focus?
the scenario is the following: I have a textbox ,next to it a button. The user types a value in the textbox, he presses tab, I search this value in the database in the LostFocus event, if there is no match, a browse form shows and the user can select the desired value. After closing the browse form, the focus goes to the next textbox control (and exactly this I want to prevent). The user can click the button next to textbox to choose a value (the browser form appears), but in this case, after closing the form, the focus remains on the textbox control, because before clicking the button, the focus was on it.
So, my question: how can I disable the LostFocus event? Ok, I figured it out: I must use the validating event. It works. But in this case, if I close the form, the event fires up. How can I disable this?
I have a class library in which i have created a simple new application with a form and added AX webbrowser control on it. In order to apply events on popup of webapplication shown in webbrowser (or to detect whether a pop-up has opend), i am using LostFocus event on webbrowser control, it was working fine till now.But after i reset my IE settings (Internet options->Advance->Reset) the event stopped working. I am using IE9 and the class library is developed in VB.NET (VS 2010).
So I have a LostFocus handler for my TextBox, and it gets called whenever I press "m", "o", or "-". Why is that? [Code] Is all that's there. I thought that I might have access keys or something interfering, but I would have to be pressing Alt, "-" wouldn't work, and there's also the fact that I have no access keys on the form. What's happening?
I am finding it strange that the lostfocus event is always executed once when I launched my application. in my lostfocus event, I have some code that queries the db based on the textbox value. It is supposed to be 13 characters. So when i launched my app and presses the first character in the textbox, it is givin an error. When i debug the application, I found out that the lostfocus event is getting called once when i start the application.
I just added a gotfocus and lostfocus handler for all of my textboxes. Below is my routines to call on gotfocus/lostfocus.
[Code]...
Now, my issue is that this works great if you use the mouse and click around in the textboxes. However, if you hit the TAB key to move around on the screen, the LostFocus event doesn't seem to work. All of my textboxes backcolor remains lightblue. What did I do wrong? What do I need to do to fix this problem?
Background: I have a winForm app that registers a user in the database based on the information provided, auto-generates a random password and username, and e-mails the user a link to take an application based on the marketing company selected.
Problem:
When the user selects the lbCarrier(s), the Bundles don't show up in the listbox b/c the lostfocus feature doesn't work for asp.net. What code can I use to auto-populate the Bundles listbox based on what is selected in lbCarrier listbox for ASP.NET.
Code from default.aspx.vb:
Private Sub lbCarriers_LostFocus(ByVal sender As Object, ByVal e As System.EventArgs) Handles lbCarriers.LostFocus Dim splt() As String
I have the following code and I can't get the lost focus to work.
Private Sub txtSpeed_KeyDown(ByVal eventSender As System.Object, ByVal eventArgs As System.Windows.Forms.KeyEventArgs) Handles txtSpeed.KeyDown, txtSpeed.LostFocus
I have a form that is bound to a table of data. I have a typical binding navigator. When I go to a different record such as next, previous, first or last I need a subroutine named "LayoutAdjust()" to execute "after" the new next record data is loaded on form. I tried calling the subroutine in the "BindingNavigatorMoveNextItem_Click" action but it executed the procedure before the next record data was loaded
I currently creating a form to read .csv from floppy and show the data into textbox. But my problem is after i ran the application my pc not stop triggering the floppy drive. The indicator always light up even after i close the application. there any additional code i need to add to my existing code.Im using VB Express 2005 and This is all the code i use.
Dim oXLApp As Microsoft.Office.Interop.Excel.Application Dim oXLbook As Microsoft.Office.Interop.Excel.Workbook Dim oXLSheet As Microsoft.Office.Interop.Excel.Worksheet
I am using a Combo box control to select from a list of Databases, and when one entry is selected I display a listbox of certain objects in the database.Other controls are then used to filter the list based on either name or content.Now, I want to know how to Re-load the original list based on the current combo box selection by using a 'Reload' button.In the button code I am setting focus back to the combo box, but whatever I try I cannot make the list refresh again. I've tried Select, SelectedItem, Text and Find methods but nothing works.How do I reload the listbox without having to manually use the drop-down and select the same item again?
I have a checkbox X1 that if checked it will check a column of checkboxes.What i'm trying to do is if the user unchecks at least one checkbox from the column it will uncheck checkbox X1. But I don't want it to run the event from checkbox X1 again because that will cause the whole column of checkboxes to be unchecked.
I want to make something like an alarm clock. So, I want my programe to trigger a certain event at lets say, 8:00 AM and 16:00 PM.
I was thinking something with timers ticking every second and checking if the time I want is equal to the system time. But....I didn't manage to make it work. So, how do I make this work ?
Have created a few stand alone projects but nothing major... Using a trial of VB Studio 2010 (.net 4)
a) I have two networked pc's ("PC1" and "PC2") with a solution on each which has a "textbox" and a "send" button. Just want to type "hello" in textbox on PC1 then hit send and it appears in PC2 textbox so that I can base if statements etc. on it.
something like:
//PC2.App2.textbox2.text = textbox1.text
on a button would be perfect but i'm guessing that's far too simple.
b) Video Triggering over network - pretty well sames as above, just want to hit button1 on PC1 and it plays "1.wmv" in "axwindowsmediaplayer1" on "PC2".
c) How can I play a .mov/vob/avi/mpg/flv in an "axwindowmediaplayer1" ? if not possible how do I go about playing videos of all types in my programs?
I have a TreeView object on my form, with check boxes. By the way, I'm working with vb.NET. I want it to perform a few different things with the aftercheck event:
If you check a node, check all its children If you uncheck a node, uncheck the parent node If you uncheck a node, uncheck all its children
The problem is when you uncheck a node, it unchecks its parent node, which triggers the event again and unchecks all its children.
Would there be a way to prevent the event from triggering a second time? Or will I have to give up on one of those two points?
Here's the code, if it helps any:
If e.Node.Level > 0 Then If e.Node.Checked = False Then If e.Node.Parent.Checked = True Then
[code]....
While I'm at it, is there a way to check if a folder is accessible? I've toyed with FileAttributes, but can't seem to find out how to make it work...
I need to trigger a submit when saving my image file in SQL 2005 database. A user will upload their image file.My application will then check to see if the image file size is within specific requirements.If so, then save the image into a table where the field is image data type. (if size does not meet requirements, display error message and exit sub). The issue is if I save the image file to the database, the value is saved correctly (however, I have not checked the image size).
If I check the image file size first, THEN save it, the value saved is corrupted (incorrect). Is there a way that I can check the file size, then save the file while doing a submit in code-behind?
My code is below:
Dim iRequiredImageHeight As Integer = 80 Dim iRequiredImageWidth As Integer = 280 Dim imgBytes(FileUpload1.PostedFile.InputStream.Length) As Byte
I need a simple system that allows one process to check if another process is running (I think I can do that fine using Process.getProcessByName or similar) and then trigger an event in that process assuming it is.When I say trigger an event I do not mean that literally. I simply need to trigger a sub in the first process from the second.I know that IPC like this would normally be done with pipes or remoting or something like that but I have no experience with these and am looking for a quick solution, so unless these can be used relatively easily to solve this I am looking for an alternative.
I have an hta menu with selection buttons to run batch files. The files run okay, so this is purely a tidying up exercise. I want the command windows to either run silently, as background tasks, or minimized.
I have a number of textboxes on a form, and I want them all to accept the ENTER key. When the ENTER key is pressed, I want it to trigger the validating event. I know it will look something like this:
Private Sub Textbox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles Textbox1.KeyPress, Textbox2.Keypress
[Code].....
What code can I use to cause the validating event to fire? I'd prefer the focus to stay in the textbox.
I've got a piece of code that inserts a row into a table - the kind of thing I've done in dozens of other apps - but the end result is nothing happens on the database end, and no errors are generated.
Here's my code:
Partial Class MyDatabaseDataContext Public Sub CreateEnrollee(subId, depId) dim newEnrollee = New enrolee With {.subId = subId, .depId = depId}
[Code]....
After SubmitChanges is called, no new row is created, and "test" is zero. No errors are generated. I have no idea why it's not trying to insert the row.
I'm using FileSystemWatcher to monitor a file on a windows server which links into a news ticker on our desktops. The ticker watches the file and updates accordingly. I've successfully got the ticker to watch for a creation and deletion which is great but the changed function doesn't seem to trigger. Out of interest, I tried this function on the network drive AND a local disk with the same results.
I've upped the buffer but I can't see what else I can do to change it! In the short term, we can probably live with just deleting and recreating the file with any changes that are required, but it would be nice if the ticker would just watch for file changes.
I am still in the conceptual(planning) stage so I do not have a code to show as an example.[code]...
Example: A user visits the form, the cursor by default(Tab Order) is in the first TextBox. If the user tries to leave the box without
entering any information an error is displayed. The user cannot leave the TextBox(MaskTextBox) unless they enter valid data.
If the user enters valid data the error message goes off and the user is able to leave to the next TextBox.
I also have a bunch of RadioButtons, CheckBoxes and NUD that I would like the user to play with without trigger the error messages on the TexBoxes. If the user click a check box or radio button, I need the error message to stay off, the error message should only trigger if a user click in a text box and a: Decides to leave without entering data or b: enters a wrong data.
I know other ways to do this, example using a submit button to do this. However is my idea possible? Can you have a field(controls) the validate on leave and click other fields(controls) without triggering it?[code]...
