VS 2010 Unable To Use Contextmenustrip And Datetimepicker (and His Events)?
Nov 10, 2011
I have a contextmenustrip containing a datetimepicker. Now the problem is that when I choose another date in the datetimepicker the event for that goes through without a problem BUT the event causes the contextmenustrip to go away. The problem is the contextmenustrip must stay shown. I solved the issue with contextmenustrip.show on the end of the event, this works but this has one big disadvantage. I loose all information about the sourcecontrol of the contextmenustrip, and this can't happen.A monthcalendar lets the contextmenustrip stay after his event, but a monthcalendar is too big what cause my menu to be clumsy.
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Apr 7, 2011
I'm trying to use a asynchronous UDP-Port to recieve data on a form.I manage to receive one message at a time(for each click of btnReadData), however if I do this receive in a loop (in order to continously receive new messages), my form seems to be locked.What am I doing wrong?
Public Class FPR2DIS
Delegate Sub dDataReceived(ByVal Data As String)
Dim UDPWorker As New Worker
[code].....
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Apr 8, 2010
Is there an event that fires in vb.net just before a contextMenuStrip appears when the user right clicks on a control? I need to be able to control the content of the contextMenuStrip just prior to the menu strip appearing. Basically I want to be able to change the content of the contextMenuStrip just before it appears.
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Mar 16, 2012
I am trying to show the date that stored in sql2008 in vb2010 by using datetimepicker.
Here is my code:
Private Sub Load_Project(ByVal cJobNo As String, ByVal nFlag As Integer)
Dim lnComboboxIndex As Integer
Dim lcSQL As String
'nFlag => 0-Edit 1-Copy Record
[Code] .....
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Mar 18, 2012
VS 2010 ContextMenuStrip not showing?
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Mar 22, 2011
1. Regex:this
Try
Dim mCollect As MatchCollection = Regex.Matches(Textbox1.text.ToString , "(?<=1).*?(?=3)", RegexOptions.IgnoreCase)
For Each m As Match In mCollect
TextBox2.Text = m.Value
[Code]...
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Dec 24, 2011
I have a form with a ContextMenuStrip Added and a Listview. I set the 'ContextMenuStrip' property on the listview to my newly created ContextMenu.
So, I am creating the Menu items from a database (no problems here). But I cant seem the get certain menu items to a checked status when creating the menu item from the database.
The Code below is a sample of what I am using.
Public Sub LoadMenu(_Menu As ContextMenuStrip)
Dim n As Long = 0
Try
[code]....
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Apr 29, 2012
DataGridView1.Columns("Artikel").ReadOnly = TrueFor make column "Artikel" for Read Only, into the DataGridView.My problem is, that the ContextmenuStrip overruled the code, so the user cane change the value, into the column "Artikel".
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Dec 18, 2010
I have one sample project to automate Internet explorer in VB 6.0. The same thing when I am trying to do with .Net its just hangs my Internet explorer document. I am not able to type or click on any control on the page.
Here is the sample code block.
Imports SHDocVw
Imports mshtml
Public Class FrmRecorder
[Code]...
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Mar 11, 2011
I am in need of adding arr of type label at run-time. I am making a program which will retrieve employee name from database in different label. On clicking each employee name (label) it will display all the information about that employee in a msgbox. I use the following code to create the label. Since the number of labels is not fixed I have used an array.
dim withevents lblArr() as Label 'declared in the class
In the subroutine(Form load):
for i as integer=0 to NoofEmployee-1
redim lblArr(NoofEmployee-1)
lblArr(i)=new Label
' I assigned all the necessary property like size location etc..
me.controls.add(lblArr(i))
next
I declared another subroutine:
private sub MyClick(sender as Object,e as EventArgs) **handles lblArr(0).click**
MsgBox("Hello")
end sub
The code doesn't compile since a subroutine doesn't.
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Jun 7, 2011
I have a listview and Contextmenustrip control. Listview contains one coloumb. How to transfer ListView data to ContextMenuStrip?
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Jan 26, 2012
how to display Table Contents in ContextMenuStrip using visual basic 2010
i have a Table "Students" field names are "StudentsID and StudentsName" have 20 Records
now i want to display All students name in ContextMenuStrip work like a popup box
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May 19, 2012
I have a date field in my dataset, my datetimepicker is bound to it. When the form loads, the datetimepicker is default to todays date if there is no value stored in the database. Right now I'm saving by the tableadapter.update(dataset) method. Is there a way to make it write the default value (today) of the datetimepicker even if the user doesn't select a value because if you make no selection it saves nothing in the database and the user may think it's ok because there is a value (today) shown by default.
If not, what is a good way to display the datetimepicker as empty so the user will have to choose a value, or how do you communicate with the user that the date shown is not going to save?
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Jun 27, 2011
I'm using the following code to fill a DataGridView:
Dim conz As New OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:BdadosCV_PARTS.accdb;Persist Security Info=False")
Dim cmd As New OleDbCommand("SELECT * FROM PECAS_IN WHERE Data >= ?", conz)
Dim da As New OleDb.OleDbDataAdapter(cmd)
[code]....
The field 'Data' has the format "dd-Mmm-yy" on the Access database. The code allways fails with a type mismatch in the criteria expression.I already tried
cmd.Parameters.AddWithValue("P2", Me.DateTimePicker1.Text)
but the problem is the same.
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Nov 18, 2010
Basically, I have a form. It has two datetimepickers which both have the format of "dd MMMM yyyy hh:mm:ss"..However, I want to be able to do some calculations with them and return a format of: "ddd dd MMM yyyy HH:mm:ss" with the milliseconds but not sure how to show the milliseconds. And how to do the calculations..A date and time gets entered in the datetimepicker of "18 November 2010 02:59:07"And in the other one the data may be: "20 November 2010 01:59:07"..I want to be able to find the difference between them - including the milliseconds, seconds, minutes, hours, year, month and date. etc..I have looked through the internet however, nothing uses a datetimepicker [code]I currently have this, it returns the number of different fields, but not sure how I can convert this into a readable time/date.
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Aug 12, 2011
My DateTimePickers are retaining their values from one added record to the next. How do I empty their Value contents after each record is saved?
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Mar 26, 2011
I'm trying to accomplish that every time I click + on binding navigator, datetimepicker get the today date. Not only on the form, but on the binding source also.After previewing saved data, the date cell of datagridview is empty.That doesn't happen when I select wished date manually on the form, only when I enter it in code.
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Mar 18, 2012
I am trying to select records from a table using the following command
SQLStr = ("SELECT ItemCode, PriceSold, WhenSold, WhoSold from SoldItems where WhenSold = '" & DateTimePicker1.Value & "'")
I get the error message
[code].....
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Jan 19, 2010
is it possible to set the datetimepicker control's borderstyle = none? 2nd question, how to use 32bit api functions in 64bit vb2010 express beta 2?
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Jul 10, 2011
I didn't understand something about DateTimePicker control, on one of the site i found the Private Property Hour() as integer this property was used. And inside it was:
[Code]...
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May 22, 2011
I have a DateTimePicker for a product that has been dispatched to the customer.I would like to select the day with the datetimepicker and add to a textbox a 30 day warranty. I want another textbox to automatically insert and display the date that the warranty would expire.
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Oct 31, 2011
How To Change only Month Name programatically in datetimepicker Format Long using visual basic 2010 I am use a DateTimePicker in a form
"Monday, October 10, 2011"
Now I want to Change Only Month Name
Means "...day, September 10, 2011"
also i want to change only year "2011" to "2010" How I can Change it..?
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Aug 2, 2010
I try to make a WFA for filling, reading etc. to a database. I want to compare 2 dates (actually 1 date is changed by 42 days) that are chosen by a user through a datetimepicker. After comparing the 2 dates the "newest" date has to show up in a non editable textbox. This Is my code (of course I have 2 subs for the datetimepickers as well).
Private Sub AwbdatumTextBox_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles AwbdatumTextBox.TextChanged
Dim DatumbinnenkomstDateTimePicker As DateTime
[code]....
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May 20, 2012
Well I currently just finished my game, but it ended up around 1GB. Thus, I tried to revise the code to make it smaller. I am trying to get 2 form events under a single sub. For example, a sub for a town would have the shown event and the click event. However, when I try that it won't work.
The other way is to transfer variables and its data from one sub to another. But I dont know how to either Example:
Private Sub Number
Dim TheNumber as integer
TheNumber = 1
[Code].....
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Feb 27, 2012
I made a custom control for my form. It's basically a custom button I made using a label.The only problem is, when I apply a myButton_Click event to the control in my main form, it will only be triggered if the control itself is clicked. The label takes up the entire form (it's docked inside it). The click event isn't triggered when the control (virtually the label) is clicked. You must click behind the label (the form's background) for the event to be triggered. How can I pass the myButton_Click event to the label so it is triggered when the label is clicked? I hope I'm making sense.
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Nov 23, 2011
I took a VB class a couple semesters ago and I did really well. Unfortunately, it seems as though we only covered the very basics within the class, as I feel rather clueless right now.
Here's my issue. I'm trying to write a program that will encode notes (like music notes, A-G#) which are entered by the user, into digits, 0-9. Now I have the system laid out, in that 1-8 will represent A-A, while a 0 or 9 preceding a digit will represent a flat or sharp respectively.
Now my question is actually rather basic, but I just can't seem to figure out how to do this. The user will enter the note sequence by clicking on buttons (12 of them). What I'd like to do is create one sub that will handle all possible button clicks. I suppose it's possible that I could have separate subs for each and every button; but it just seems more efficient and cleaner to have one sub that manages them all.
The part I have completed and working properly will display a message (the same message) in a messagebox each time any of the buttons are clicked. So I have the "Handles" part working for all 12 buttons. But what I'd like to do is write code, perhaps "If" statements such that If "btnA" is clicked, then say "You clicked Button A," and If "btnASharp" is clicked, then "You clicked Button A Sharp," and so on. Is it possible to do this somehow by recognizing which event was actually triggered?
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Jan 28, 2012
I am trying to make a UserControl or Component which can be dragged from the Toolbox onto a container control such as a Form or a Panel. Its purpose is to change the behaviour of that container. In particular, I would like to add functions to the container's painting and mouse actions. I DO NOT want to have to write code for the container itself -- that's the whole point of the Toolbox object.
I can do this by getting a reference to the object's Parent (or Host in the case of a Component) and handling its events, as this example illustrates:
[Code]...
However, I have heard that handling the events of a parent control conflicts with OOP principles. So I would like to know, does that objection apply in a case like my example? If so, what are the drawbacks? And what alternative techniques are available?
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Jun 5, 2011
I'm working on a grid of cells that is something like a DataGridView, but not really. The two are close enough that you can picture a DGV for the purpose of this question. What is actually there (and this is true for actual DGVs) is a set of cells drawn on the screen with a couple scrollbars for vertical and horizontal scrolling which are only drawn if there is too much data to show in the visible cells. There aren't more cells than the ones that are visible, so when you scroll the scroll bar, it looks like new cells are being displayed, but what is actually happening is that the existing cells are just being filled with different data depending on the position of the scrollbar. The key observation is that the set of controls displayed in the grid is always the same (unless the grid is re-sized, but that's not relevant to this issue). The appearance of those controls can change, but the controls themselves do not.
One of the features I am adding is the ability to drag-copy data similar to how Excel works. In my case, if you click on a cell, then drag outward (move the mouse while holding the button down), all the cells in the selection rectangle are tinted green. This works nicely. Some of the cells are enabled, while others are disabled. If the drag selection includes disabled cells, those are not tinted. Only enabled cells can be selected, though a drag can cover disabled cells. The relevant point here is that some cells are enabled and some are disabled.
The feature that I am adding is the ability to do drag selection beyond the visible edge of the grid. The grid is a monthly calendar, and I simply can't get 31 cells onto even a wide-format screen. What I am trying to do is allow the user to do drag-copy onto days that are not currently visible. The way I do this, the user clicks in a cell, then drags out to the border, at which point the grid scrolls (the scrollbars move, and the contents of the cells is updated as a result of the changes to the scrollbar value). This is largely working.
The way I handle the selection is that when the user presses the mouse button while over a cell, a flag is set to indicate that the button was pressed, and the current cell is recorded (so that I know where I started from). MouseMove events are used to figure out what new cells the user has visited, and set the selection area based on whatever is under the rectangle described by the initial click point and the current point. Lastly, when the user releases the mouse button, the MouseUp event initiates the actual copy. At that event, I know that the user is done with that copy action. Therefore, the MouseUp event is kind of critical, and therein lies the problem.
As I mentioned, some of the cells are disabled and some are enabled. Disabled controls don't raise events. If I click on a cell, it HAS to be enabled, but that's fine. The problem is that if I then move the mouse in such a fashion that the grid scrolls such that the cell that I had initially clicked on is no longer enabled, then the cell doesn't raise events any more, and the MouseMove and MouseUp events stop happening.I only see one viable solution, which is to not toggle the enabled state of the grid cells. Instead, I would have to have to add a custom property that would make the control act and look disabled as far as the user was concerned, but it wouldn't be disabled as far as the program was concerned such that it would keep raising mouse events. This would be pretty rough, since I would need to prevent the control from appearing to have focus even though it technically would have focus
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Feb 27, 2012
How can I use mouse events to move and click my mouse in another window.
For instance, I would like to move the mouse to 62,88 of "Untitled - Notepad".
so far I have:
Private Declare Function SendMessage Lib "user32.dll" Alias "SendMessageA" (ByVal hWnd As IntPtr, ByVal wMsg As Integer, ByVal wParam As Integer, ByVal lParam As IntPtr) As IntPtr
[Code]......
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May 31, 2011
I'm trying to make a way to navigate around a custom grid. Basically, I'm implementing the drag-copy feature from Excel. Right now, you click on a cell grid and can drag around the grid. Anything in the drag area gets a green tint. Once you release the mouse button, whatever was in the first cell selected is copied to all the others that are tinted. That works pretty nicely, but it works only for the cells visible on the screen. I can live with that, but decided that if you dragged over the scroll bars or the column or row headers,then the grid should scroll (if there is anywhere to scroll).
That's where the problem arose. It turns out that scrollbars don't raise the MouseMove event (at least not as far as I can see), and the MouseEnter and MouseHover events are not fired as long as the mouse button is held. Interestingly, the MouseLeave event does occur when the mouse button is held, just as the MouseMove event is occuring for all the cells. That's pretty annoying. Why do some mouse events get raised when the mouse button is down while the others don't? Also, I suppose, is there any way around this?
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