I want to know how to do a keydown at form level. If I am not using Form Level the right way, this is what I mean. In my Form there is nothing.I want it so when the user presses a key that it will msgbox() something.As I said, there is nothing on the form what so ever No ComboBox, Button, nothing.
View 2 RepliesI am creating an Excel add-in written in VB.NET. I would like to bind KeyDown and KeyUp events to the spreadsheet to record when the user presses and releases the arrow keys while navigating the spreadsheetIdeally, these events would be built into Excel alongside the native SheetActivate and SheetSelectionChange events, for example. Alas, they are not.
View 1 RepliesI need to detect shift + arrow key in blank form. But it's not working. I also tried overriding IsInputKey method but it only detects single key press (like arrow key) but when multiple key are pressed it simply doesn't work.
View 5 RepliesPrivate Sub Form1_KeyDown(ByVal sender As System.Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles MyBase.KeyDown
If e.Control Then
MessageBox.Show("aaaa")
End If
End Sub
As you can see, my form will check for when the control key is pressed down.But it doesn't work. Why?
This simple code works at child form, but not at MDI form.
Is there anything should I add or change?[code]...
I am having trouble using keydown for the spacebar in a form.I would like the spacebar to start/stop a StopWatch that I have running. I can get that to work fine but whenever I am focused on another button it also executes that buttons function also.I know that is the default behavior for the enter key and spacebar but I would like to override that.
View 5 RepliesI want to able to hold a key down while the application is loading and depending on which is being held down a certain form is shown.
For example holding down shift and the opening itunes opens a little dialog allowing you set the library(or something)
I can check whether the shift/Ctrl/Alt are being held down but i'd prefer to use the letters/digits.
Such as hold 1 down to open Form1 and hold 2 down to open form 2.
In my program I've used a text box and KeyPreview is True.When press the Enter-key i hope go to next row but called the default key?
View 2 RepliesI want to able to hold a key down while the application is loading and depending on which is being held down a certain form is shown. For example holding down shift and the opening itunes opens a little dialog allowing you set the library(or something)I can check whether the shift/Ctrl/Alt are being held down but i'd prefer to use the letters/digits.Such as hold 1 down to open Form1 and hold 2 down to open form 2.
View 1 RepliesI'm using VB.NET (2008) and .NET framework 3.5. In my application I've got an on screen button that, when pressed, sends "00" as the characters [via SendKeys.Send("00")]. I also have a keyboard that has a '00' key that sends "00", two zeros, when pressed. I'm picking up the keypress using the form's KeyDown event - it fires twice, once for each "0" and works whether the on-screen or keyboard '00' is pressed. There's also a singe '0' on-screen button and key on the keyboard that sends "0".
I want to be able to treat the "00" as a single event. I.E. in the KeyDown handler, if the character is a single zero "0", I would like to check the next character to see if it is also a zero "0". If it is then I can handle it appropriately, but also need to remove it (from the keyboard buffer?) so that it doesn't fire the second KeyDown event. If it's not a zero then it should be left to fire the next event in the normal fashion.
I am trying to catch key board events with the form keydown.
I am able to capture all the keydown events except the "Enter" key. When the enter key is pressed this code does not even fire.
Private Sub FrmMain_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
Select Case e.KeyCode
[Code].....
When I put the command in the form_keyDown event that if I pressed the Ctrl+s, run the some instruction, when the focus in the one textbox control, run one beep sound Simultaneously with the instruction.
View 9 RepliesCapturing ctrl keys in form KeyDown event
View 8 RepliesIs it possible to set focus on the keydown event so after the button control, sets the focus into the keydown? although says often control can have focus,.Putting a button and a keydown event on a form...
View 2 Replieswhen I added a textbox to my form, my keydown events no longer work. It seems impossible to get the blinking cursor out of the textbox so as to avoid targeting it. How do I retain keydown events when a textbox is added to the form?
View 11 RepliesIn Visual Basic 2008, there's two different ways that I know of to accomplish the same thing:The Dim on the member level:
Dim counter1 as integer = 0
Dim counter2 as integer = 180
Public Sub SampleSub1()
[code].....
I have noticed that a form's keydown method has a slight delay the first time you hold a button. How do I get rid of it?
View 3 RepliesOn my main application i have a button which shows an "advanced options" form, if the "debug" is checked i was trying to enable/disable visability of a couple of text boxes on the applications main screen but when i tried:
[Code]...
I have created a simple program which uses a two tier structure of SQL Tables.At the top level, one record holds the date of the activities and linked to it using its primary key as a foreign key, three subordinate tables hold time stamped records.The issue I have been unable to solve is that before adding any of the lower level records for a given date, a newly added top level record must be saved to the database.Doing this manually is simple - but can I rely on my users to remember to do this before they start plugging in the lower level data?I thought not, so I am looking to save the top level automatically.I've failed miserably but I refuse to believe that it's not possible.
View 14 RepliesI have a workable code below which checks the values you type in a textbox and compare it to database. If successfull, display "log in successfull"Now i want to have it redirect to a another form base on an "access" attribute in the database whcih i had already assign.
[Code]...
Can you show the coding needed to disable the enter key on a textedit box or at the form level?This form is using multi-line textedit boxes and I would like to prevent the user from pressing the enter key from jumping to the next line in the textedit boxes.
View 1 Repliesok well eh i have a interface where i can login, but i must set the status to tell whether i am student or staff login.
View 1 RepliesI have a form with a button that brings up a different form. In some versions of this program (don't ask), the second form is shown non-modally, but in my version it is shown modally. The point of that last statement is that the second form can be either modal or non-modal, so an answer needs to handle either one, but the modal option is more valuable.If form 2 throws an exception that is not handled, the exception is caught somewhere on Form1, though the exact place that it is caught is largely dependent on where the exception was thrown from. The question is this: I need a means to trap all exceptions raised on Form2 or anything called from Form2 such that no exception EVER propagates out of Form2 to be caught in Form1. The reason for this is that Form2 HAS to perform some cleanup for reasons that I have zero control over. That cleanup doesn not absolutely require user input, but it would be good to have some.Is there any event that is fired if a form is exited due to a call stack unwinding as an unhandled exception propagates up the stack?
View 7 RepliesI've got a form with a listbox on it.In a second form I inherit the complete first form. But when I try to use that listbox in the second form with e.g.Index = LstWoodshop.FindString (Order(0))(where LstWoodshop is that inherited Listbox) I get the error message:'LstWood shop' is not declared. It may be inaccessible due to its protection level.What or where can I change this setting so that this listbox on form 1 is also available/accessible on form 2?
View 5 RepliesI have a form that consists of only a TableLayoutPanel (which fills the entire form) containing a vertical stack of buttons. The resulting app is used in conjunction with another app. What I would like is to have the vb app do something when the mouse enters the form. Unfortunately, all mouse enter/leave events are trapped by the panel or the buttons.
As a quick test I created a form with a tablelayoutpanel (docked to fill the form) containing one button. I added the following code:
Private Sub Form1_MouseEnter(sender As System.Object, e As System.EventArgs) Handles
[code].....
It is times like these that I miss the old VB6 language I wish I could hide the current forn and show another form which - this is the important thing - to be on the same level that the previous form was . You see , I used to use this code :
Me.Hide Form2.Show However , sometimes in VB .NET this does not work the way I want it to . You see , the current form does get hidden and Form2 is shown indeed ; however , Form2 is shown somewhere in the background . If there are other programs opened at that time , then Form2 is shown behind all those programs , that's what I mean by saying I want it to be shown in the same level as the previous form was the only way out , I found , was to reverse the code :
Form2.Show Me.Hide In this way Form2 is successfully shown right where the previous form was shown (above the other programs) but in some cases this also is not pleasant because it might take some time for Form2 to load while at the same time the previous form is still visible on the screen and therefore for a slight time both forms are shown one over the other , which is surely not nice . That's why I still want to first hide the first form and later show Form2 .
In the following code, a local printer dialog box shows and its choices are implemented in the printout, but if the user goes to a 2nd-level printer dialog box such as by clicking an Advanced or Properties button, choices made therein (such as landscape/portrait or scaling) are not implemented in the printout (prfPrintForm is a PowerPacks.Printing.PrintForm on form frmPlotTrends). Is there something else that must be done to make the 2nd-level dialogs work?
Dim dlrResult As DialogResult = frmPlotTrends.dlgPrintDialog.ShowDialog()If (dlrResult = DialogResult.OK) Then frmPlotTrends.prfPrintForm.PrinterSettings.PrinterName = frmPlotTrends.dlgPrintDialog.PrinterSettings.PrinterName
frmPlotTrends.prfPrintForm.PrinterSettings.Copies = frmPlotTrends.dlgPrintDialog.PrinterSettings.Copies
frmPlotTrends.prfPrintForm.Print(frmPlotTrends.prfPrintForm.Form, Printing.PrintForm.PrintOption.ClientAreaOnly)End If
I'm looking for some code that will reload a form, so its like a Restart Level button which when clicked will reset the form to its original look.
View 1 RepliesI have multiple level of For Each and in each level, i have a Linq that is the 'In' criteria as in:
[Code]....
It will go inside each for (because the value is not nothing), however, it will only loop (next) in the very inner 'For Each t In tFor'. After it is finish inner loops, the outer Fors' or Next will not execute... even thought there are more than one values in that 'In'... like 'sFor' or 'fFor'. i've noticed while debuging, while break at the for (for example 'sFor', before stepping in), i get the error message:
"Enumeration yielded no results" when i expand the result for that variable and it will not step into it. but if i do not expand the result, it will step in. It seem that some how, once an element is accessed for that 'In' collection, it breaks (meaning does not loop for the rest of the elements) the next for that collection is this a bug or am i missing something in Linq? BTW: i believe it has something to do with the SqlDataReader in the Linq. I'm working with IAsyncResult.
I try to create a form that managing the access level of user management system.The model I use is the following :I create a connection to database I create a DataAdapter to transfer the data from the database I create a Dataset to hold my data My form consists of the following :A ListBox that list all the access level namesThree text boxes: the first for the record ID The second for the access level name And the third for the discription of the access level Five check boxes:One for writing rights One for the deleting rights One for the Updating rights One for Printing rights And one for Special area access rightsSo what i do is the following :I create a connection string I create a new connection to my database server I create the DataAdapter I initializing the DataAdapter command such as SelectCommand, DeleteCommand, e.t.c.I fill my DataSet with the data DataAdapter get from DataBase I binding my controls to DataSet I setting the DataSource property of the ListBox to my DataSet I setting the DisplayMember to the ACCL_NAME column of the DataTable inside the DataSet I setting the ValueMember to ACCL_ID column of the DataTable inside the DataSetUntil this time all are fine ! ! !The question is :When i try to add a new row to dataset by using the following code i have a problem :
Dim newRow As DataRow = Dataset.Tables("TableName").NewRow newRow("COLUMN_NAME") = Binded Control Value DataSet.Tables("TableName").Rows.Add(newRow)