Resize Event Triggered Before Load Event

Jul 18, 2012

Following on from my post yesterday (how to anchor buttons/controls to various sides of the current form when the form is resized) I have run into another problem. I am setting the width of my datagrid to be 80% of the form width on a 'form resize' event with 10% of the width at either side so it remains centred in whatever size window is available. This works fine. (mydatagrid.width = me.width/5*4)

I then decided to dynamically set the width of the 2 columns in the datagrid each to 50% of the width of the datagrid. Again, this sub is called in the 'form resize' event. This fails because the datagrid hasn't loaded the data from my sql database when the first 'resize' event is triggered. I did a bit of testing (by placing a simple msgbox statement into the resize event and the load event) and it seems the 'resize' event is triggered three times before the form's load event.

how do I stop the resize event triggering when the form loads (or at least make the load event trigger first).

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Override An Event - TextChanged Event Not To Be Triggered When The CellClick Event Occurs?

Jul 20, 2010

I'm trying to validate a few things in a form I'm building. It has a datagrid with clients info (taken from an access database) and a few textboxes where the user can type some search criteria. The thing is that those same textboxes are used to add new clients to the database and to modify a client's information if one from the datagrid is selected, so I made it that the buttons to insert and modify clients are disabled on load and thenevery time the text on a textbox changes ("TextChanged" event) they become enabled. So far so good. But then I wanted to make it so when a client from the datagrid is selected both buttons become disabled again until the text on a textbox changes (to make sure they're adding a different client and not the same one that was
selected).

I tried using the CellClick event from the datagrid to disable the buttons, but since every time a client is selected from the datagrid the info is shown on the textboxes, this triggers the TextChanged event too, and the buttons become available.So, is there a way I can tell the TextChanged event not to be triggered when the CellClick event occurs?

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[Timer] Trigger Event Manually - User Must Wait For A Minute Before The Event Is Triggered

Feb 12, 2010

Eg. ""vb.net" timer event trigger on purpose". This application is meant to run at all times to download a web page every minute. To avoid freezing the UI, I read that the best solution is to move the code from a While/Sleep loop to a Timer that will be triggered every minute. The problem I have, is that the user must wait for a minute before the event is triggered:

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Timer1.Interval = 60000
Timer1.Enabled = True

[CODE]...

Is it possible to force this event to occur instead of waiting for it?

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C# - Difference Between Load Event,Activate Event And Enter Event In The Form?

Mar 30, 2009

I am using VB.NET for Windows applications. What is the difference between Load event,Activate event and Enter event in the Form and in which order the above event is executed.

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Difference Between The SizeChanged Event And The Resize Event?

Feb 16, 2010

What's the difference between the SizeChanged event and the Resize event?

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Asp.net - Event Not Triggered?

Jul 13, 2011

i have used a aspx page with vb code. the page is not firing any event after some time if the page is kept idle.

any property needs to set in page attribute??

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AfterRowUpdate Event Is Not Getting Triggered?

Sep 28, 2009

I am using VS 2008 and UltraGrid from Infragistics v 5.2

I have two UltraGrid objects on a Winform. While the AfterRowUpdate event gets triggered for one, it does not get triggered for the other. Here's the procedure of the offending UltraGrid event:

This does get executed:

Private Sub ugPatient_AfterRowInsert(ByVal sender As Object, ByVal e As Infragistics.Win.UltraWinGrid.RowEventArgs) Handles ugPatient.AfterRowInsert
e.Row.Cells("Courtesy_C").Value = "Mr."

[Code]....

The source file is different from when the module was built. Would you like the debugger to use it anyway?

Even if I rebuild by application, the dialog box does not go away.

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Find Out What Triggered An Event

Jul 30, 2011

I'm having a really annoying issue which I can't get to the bottom of. I've got a NumberUpDown control which has a ValueChanged event. There is only one reference to it in my entire project which I have commented out to prove that it isn't calling the event. Even though the number is not being changed (the control sometimes isn't even in focus!) the ValueChanged event gets called. This is driving me crazy and I wondered if I could back track through the code to see what actually caused this event to trigger?

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How To Know What Event Was Triggered In Picturebox

Dec 20, 2010

how can i know what event was triggered in picturebox in VBnet? [Code] i want to know what event was triggered whether it is .MouseEnter or .MouseLeave. the reason why i'm making this is to make the code more categorized according to the object that was used.

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Open File With - What Event Triggered

Apr 15, 2012

What event trigers when we open file with our exe/program? How to do coding for that?

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Validating Event Getting Triggered Twice In Maskedtextbox?

Aug 17, 2010

I am facing a issue while using the "validating" event of the maskedtextbox. I have an MDI form, in which there is a main form and a form acting as bottom bar. The bottom bar comprises of buttons for moving to "previous" and "next" forms. If suppose in the main form i have a maskedtextbox and the initial focus is set on it, then on the click event of the button (next; which is on the bottom bar form), it calls the validating event of the maskedtextbox twice. In the validating event of the maskedtextbox, i am checking some validations and if it doesnt pass, then i set [e.cancel = true]. just let me know the reason behind the triggering of "Validating" event twice?

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How To Force Form Load Event On Form2 From Click Event On Form1

Nov 16, 2010

I'm trying to execute different code depending on the button clicked (button 4 or 5) on Form1, but when I click on button5 to activitae the code on the Form2's Load event everything is Ok, but when I click the back button to return to Form 1 and click on the Button4 to activate the code on the Form2's Load event again, it doesn't active the Form's Load event, is there a way to form the form load event every time I access it from Form1? [code]

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Textbox_Leave Event When Triggered By Selecting Different Tab In Containing Tab Contol?

Aug 12, 2010

I have a textbox in a tab control and iv'e coded the textbox_leave event to show a msgbox and reselect the textbox if the text doesn't meet certain conditions.

Private Sub TextBoxChaseTime_Leave(ByVal sender As Object, ByVal e As System.EventArgs) Handles TextBoxChaseTime.Leave
If IsDate(Me.TextBoxChaseTime.Text) Then
Me.TextBoxChaseTime.Text = Format(CDate(Me.TextBoxChaseTime.Text), "hh:mm")[code].....
(Reselecting the textbox is the only way i can find to efectively cancel the leave event - is there another)

I've also added a line to also reselect the tabpage incase the textbox_leave event was triggered by selecting a different tab in the tabcontol.However, when the textbox_leave event is triggered by the user selecting a different tab the textbox_leave event seems to be triggered several times displaying the msgbox four times.why this is, but it seems to be caused by the by the line that reselects the tabcontrolhow to stop the msgbox being shown more than once Interestingly, if i add a line to change the text in the text box to meet the conditions the msgbox is only shown once, but the tabpage is not reselcted

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Forms :: Keypress Event Is Not Triggered When Push A Key

Mar 23, 2009

I have created the following piece of code to try and see if the user pushes the 'f1' key, and if they do.

[Code]...

I am not sure if this code works yet because the keypressed event is not triggered when I push a key. Could someone tell me how I can change my code so that it will test what key is pressed, no matter what control on the form has focus?

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Mouse Scroll Up And Down Event Is Not Triggered On Picturebox?

Nov 15, 2010

I have a picture box in my form and now I want to add an event so that if the mouse is scrolled up the scale of the picture box gets larger and when the user scrolls down the size off the picture box gets smaller. This way I want to make a zoom in and out effect.So now i have the following code in the mouse wheel event of the Picture box:

If
e
.
Delta
>

[code]...

But somehow this whole mouse wheel event isn't fired.

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SelectionChange Event Not Triggered When Form Minimized

Mar 25, 2011

I have an application with a DataGridView and WebBrowser controls. In the DataGridView I load a DataTable using BindingSource. DataTable is just a list of URLs. I use SelectionChanged event on the DataGridView to load a selected URL in the WebBrowser control. The problem I have is that when I minimize form to the tray, it for some reason triggers SelectionChange event multiple times. What's really weird is that if I minimize to the taskbar SelectionChange event doesn't get triggered. It also doesn't get triggered if I load URLs directly to the DataGridView. What triggers SelectionChange and how to get rid of it?

Public Class Form1
Dim URLTable As DataTable = New DataTable("URLs")
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Dim URLColumn As DataColumn = URLTable.Columns.Add("URL", GetType(String))
[Code] .....

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Enter Key Event - When Pass Enter Key But For Somehow Enter Key Event Doesn't Get Triggered

Jul 8, 2010

What did I do wrong below? When I pass the enter key but for somehow the enter key event doesn't get triggered.

CODE:

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.net - Resize Listviewcolumns - Add To Each Listview A Resize Event With Percentages?

Apr 26, 2012

I created so many listviews in my project, that im too lazy to add to each listview a resize event with percentages. Is there any other trick, who just scales the columns so as they are?

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Resize Parent Control From Child's Resize Event?

Jan 10, 2012

I'm starting work updating an UI for one of my company's applications and I'm running into a sticky issue. The parent control contains several panels, each of which can be turned on or off depending on user input.

The final panel in the user control contains another user control which gets resizes according to a toggle switch. Essentially, it "opens" up more information.

While the child control (ChildControl) is docked to Fill inside the parent control (ParentControl), when I add height to ChildControl I can't get ParentControl's height to get updated as well. Currently I'm handling the ChildControl.Layout event in ParentControl but I can't seem to reach that code. To resize ChildControl, I'm calling Me.Height += 200 in ChildControl.vb.

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C# - Possible To Re-DataBind A DropDownList Upon Postback Triggered By SelectedIndexChanged Event?

Feb 3, 2011

Let's say I have a DropDownList of product categories and a ListView of products based on the category selection in the DropDownList. When a user visits the page, there is a possibility of conconrency issue as new product belonging to a new category may be added to the inventory as the user is browsing.When the user selects a different category to view(a SelectedIndexChanged event) and causes a postback, I want the DropDownList to update the list of categories to include the new category being concurrently added and at the same time still able to make a change of selected index.

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VS 2008 Find The Controls Name That Triggered Datagrid Event?

Sep 18, 2011

I have a datagridview control with a number of comboboxes on it.I am generating a custom combobox with a DataGridView_EditingControlShowing event.How do you get the name of the combobox in DataGridView that fired the event?as all actions on the DataGridView trigger this Sub

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[2008] VB - Code To Be Altered Automatically If A Certain Event Was Triggered

Feb 5, 2009

About some coding in visual basic.NET 2005. I was wondering if it was possible for code to be altered automatically if a certain event was triggered. For example; would it be possible for you to alter the following structure, say if a a button was pressed?

The structure is as follows:

Structure ClientDrawings
Public ClientID As String
Public Drawing_1 As String

[CODE]...

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Cancelling The Event That Triggered An Asynchorous Call After The Method Finishes?

Jun 15, 2009

In an event handler of a tab chaged of a tabcontrol, I call a method asynchrounously, like this:

Private Sub tabDetails_Deselecting(ByVal sender As System.Object, ByVal e As System.Windows.Forms.TabControlCancelEventArgs) Handles tabDetails.Deselecting
' we pass pageindex so that we set the index back in case the validation fails

[code].....

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Communications :: TCP - Full Message Before The Data Arrival Event Is Triggered?

Jan 16, 2009

When you Use Socket.Send Ether in VB6 with the Winsock control or Vb.Net sockets / Windows API does it generate that if you send "Hello" that on the other side it will get the Full Message Before the Data Arrival event is triggered??Or is it possible it can get it in two Different events like "He" & "llo" and a Last question, TCP is stream oriented, is there a Protocol that is Message Oriented but is wrapped with TCP, if not what is a good Delimitor to use with TCP, Usually ide use &H1 OR &H0 but I assume &H0 is common.. or Should I just add a Length Param before each Packet I send..?Now if thats the case and I got the Delimitor route... What if Im sending Chunks of 8192 of a File in a while loop and on a different thread I send a Command if I use the Length Param isent there a huge chance that the messages will get sent like this

[code]...

BUT the issue lies as it thinking that only the 3 of 4 of the incomming file Frames are getting Recv due to it not knowing which frames are for which. Mainly due to me sending a big burst and on the other side recving random chunk sizes on the other side.Edit: Got another question, If I send two bytes across the internet via TCP, will they ever arrive as two different I belive the term is Frame or is that only when they exceide the size of the MTU will the Message be Split. The reason why is if I send a Header saying SOH, Length Of Message(2Bytes), thats 3 bytes can I say 100% of the time the computer on the otherend will recv that all at once so I can parse it? And What ever happen to Flush for Winsock?

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Make A Selection From ComboBox The CellValue Change Event Is Not Triggered

Mar 3, 2011

On my DataGridView one of the columns is set to a ComboBox. When I make a selection from this ComboBox the CellValue change Event is not triggered. What event is triggered when I do the selection?

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VS 2008 - Infinite Loop - Event Triggered Keeps Firing Off The Code

May 9, 2010

I'm not even sure what I need to know. None the less lets say I got a timer with an if event to check if said event is triggered then it fires off some code. The problem is if said event is triggered it keeps firing off the code and I only need to do it one time. Whilst letting the timer keep checking if event happened. I hope I worded that right and here is a rough translation in code. [Code] Is there a way to keep checking if an event happened and only fire off the code one time?

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What Event Is Triggered When Selected Date Of System.Web.UI.WebControls.Calendar Is Clicked Again

Apr 15, 2010

if a new value of Calendar is selected, it would trigger .SelectionChanged event, but what if same selected value is clicked again? How should i identify it uniquely?

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Control Array - Add New Event - Click Event Code And Calling It A Doubleclick Event

Jul 31, 2010

I've read thru Iceplug's tutorial on control arrays and got it working. I tried to add a new event by basically copying his click event code and calling it a doubleclick event. I used the proper addhandler and assigned the correct name to my sub. I have the click event changing the background color to blue and the doubleclick event changing the background color to green. The background color does not change to green. Why?

Heres the tutorial with my new code encased in asterisks ...

Code:

Imports System
Imports System.Windows.Forms

Public Class form1

[CODE]...

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Set Up A Textbox Resize Event

Feb 11, 2009

I have set up a Textbox Resize event, but when I execute the form, it doesn't allow me to change the textbox size. I'm not sure what code to show; this is a VB.Net book exercise that I'm running in VB 2005. [code] I have tried setting the Border to something beside 'Fixed'. All resize references I have found refer to Forms or tables. Is there a property that allows users to resize a textbox?
(

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Use KeyPress Event And Resize Application While?

Aug 20, 2009

I've tired to use KeyPress event while in focus of my program's window in VB.Net, but it doesn't work.

For example I wanted to press the number "2" anywhere while in focus of the application and as effect the pixels of the window will change from 200,200 to 600,600 (hortizontal and vertical)

Private Sub Form1_KeyPress(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles MyBase.KeyPress
Form1_KeyPress(Keys.D2)
Dim size As Size
size = Me.Size

[Code]...

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