On a .Net app, I got an AxDataGrid on a form. The DataSource of the grid is a RecordSet,created by parsing a comma-delimited text file.rom the UI, I add a new column with a defined size to the text file and then reload the data grid with a routine that creates a new ResultSet and binds it to the grid. Things are fine and the new column is shown.
View 1 RepliesI have 2 window forms, form1 has a button, which will send a msgbox when I click on, and form2 closes when it's deactivate-event raised. If I have form2 focused, and I click on the button of the form1, form2 will get focus and then close, but no msgbox showed from form1, what should I do to get the msgbox in that case?
View 5 RepliesI have two forms in an application. One is he background and then I show another keypad form called with the show() method (not showDialog) because I need to perform some validations on btn click.
The kepad has 10 buttons and an Enter Button. The problem is that the form keeps loosing focus (I checked this with a messagebox which keeps poping up once for focus=true and again for focus=false, it continuously keeps losing and gaining focus) so it does not process any keypress events untill i click somewhere on the form. I tried using me.focus() in form load event but to no avail. The forms TopMost property is also set to true.
I've written a short application that consists of a form, listviewbox and a timer, the program sits in the taskbar with the form invisible, the timer is set for 40 seconds and basically it queries a database held on an SQL 2000 server, when a certain change happens within the database my form pops up and shows some data in the listview, this happens well, the problem I have is when the check is going on (every 40 seconds) the user loses focus on what ever they're working on. Is there a way I can stop this?
View 2 RepliesI need to start multiple processes, with minimized windows - and I don't want whatever the current process is to lose focus.Something like this should be simple enough:
[Code]...
However, whatever application is running will lose focus when this code is executed. I've looked high and low, and there doesn't seem to be any relatively simple way to do this. I had some ideas about capturing whatever application has focus (I don't want to assume my program has focus), then running the above code, and then restoring focus. However, I'm fairly certain this will require win32 API calls, and I'm not sure how to do that.
code...
Dim sqlConn As New SqlConnection("server=.SQLEXPRESS;Integrated Security=true; Database=memberlist;")
sqlConn.Open()
Dim sqlComm As New SqlCommand("SELECT * FROM memberlist", sqlConn)
[code]....
when i do this the first msgbox pops up, i click ok, it then loses focus, i think its actually minimizing. I then have to click it in the task bar several times to get it to come back up. from then it will sometimes give each msgbox over and over just fine, sometimes it will minimizes random ones. the first one seems to be a constant.
I have three forms frmStudent, frmClass and frmMain. I want to add code so that if the user focuses on another form without saving a message box will appear to prompt the user to save. This is necessary because If the user starts entering data on another, related formand assumes that the changes from the first form were saved, then there could be integrity issues.
I have tried formating the deactivate event, but when I hit yes it just deletes the record entered.
Private Sub frmStudent_Deactivate(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Deactivate
If GradebookDataSet.HasChanges Then
[Code].....
I've created a small form that acts like the office notifications (fades inout above the notification icon tray)I'm having problems showing this form, I want to display it without the focus being taken from my main application (or any other form), I've managed to get the attached code doing roughly this, (using Me.Activate to take back focus) But this isn't great - focus switches for an instant plus I want to show the form from various areas in my application...
Dim frm2 As New frmNotification()
frm2.TopMost = True
frm2.Show()
Me.Activate()
I'm creating some software to keep my students on task. I've set it up so that I can control certain aspects of their computer from my computer. Problem is, I'm not sure how to control other applications from my application. I mostly just want to prevent it from being minimized. Some students like to switch screens quickly when I walk by. I would just like to make sure that it is always on top until I specify otherwise. I'm using VB.net, I'm using the 3.5 .net framework for compatibility reasons.
View 1 RepliesIs is possible to prevent a modeless form from losing its focus? I would like to force users to click the exit button of an addin form shown modeless before they wander into the main application. I need to show an user form of an addin modeless, in order to be able to interact with the document of main application. However, I would like to force them to exit this form before going into the main application.
View 5 RepliesI want to prevent my application from losing focus, untill I close it. (so that I can not click on ANYTHING else, untill I'm done with it. period.)I've tried using Me.Focus() on a timer, but that doesn't do s***...I've also tried countless API's out there, but I seriously can't get any of them to work.. my form simply does NOT want to stay in focus! It's driving me crazy! What the hell am I doing wrong?
View 2 RepliesIn VB .Net 3.5, is it possible to change the color of a DataGridViewCell (unbound) to a different color and have the cell visibly change before losing focus or leaving the cell? I have a timer that's running that queries with the data present and I'd like for the colors to change immediately instead of after the user leaves the cell.
I've tried DataGridView.Refresh and Me.Refresh and don't get results.
What am I doing wrong? (Below is the code I use to change the background)
''' <summary>
''' Sets or clears the passed cells background to Red
''' </summary>
[Code]....
I am losing my leading zero in the minutes below. I thought having the "mm" would place two digits for the time.
DateTime.Now.ToString("mm")
i am using Visual Studio 2008 Expres Edition. I use the WebpageManipulation Example VB Code from KLEINMA downloaded from this forum. It uses a Webbrowser Control. What i want to do:
[Code]...
I am having problem setting focus on specific cell in my Datagridview1 . On Form1 when clicking on cell 3 in any row, I am callig a Dialog1. However, when done working with it, and closing the Dialog1, the focus returns to cell 3 in my Datagridview1 . I like to set the focus on the next cell(4) making it the current cell.
I have tryed :
DataGridView1.SelectionMode = DataGridViewSelectionMode.CellSelect
DataGridView1.CurrentCell = DataGridView1.Item(4, e.RowIndex)
DataGridView1.CurrentCell = DataGridView1.CurrentRow.Cells(4)
And few other things, I am always getting this exception: Operation is not valid because it results in a reentrant call to the SetCurrentCellAddressCore function.
My main goal is to have an excel spreadsheet that automatically plots the overall success of my stock portfolio over time (% change over time). I've been able to incorporate stock data into my spreadsheet by linking it to the web, but the trouble is the spreadsheet will keep no history of what the previous stock values were, so I can't graph how things change over time. This sounds like it might be too complicated to be built in to excel, so I was wondering if anyone knew how to program this in Visual Basic. Maybe something like this.... If refresh then new cell plus new time stamp. Another possibility would be to have a whole bunch of cells that refresh only once but at longer and longer intervals, e.g.,
[Code]...
I have a DataTable and want to connect the cells of one of its columns to cells in some other DataTables.
For example:
DataTable1.Rows(0).Item(2) is connected to DataTable2.Rows(4).Item(6)
DataTable1.Rows(1).Item(2) is connected to DataTable4.Rows(2).Item(3)
DataTable1.Rows(2).Item(2) is connected to DataTable3.Rows(11).Item(4)
...
How can I do this?
this is currently my code to clear my 5 textboxes
Private Sub Button2_Click(sender As System.Object, e As System.EventArgs) Handles Button2.Click
TextBox1.Clear()
TextBox2.Clear()
TextBox3.Clear()
TextBox4.Clear()
TextBox5.Clear()
End Sub
I have a timer that runs every time by itself, and for the code the runs in it I would like to have it clear the dataset before it does anything, the timer runs every 10 seconds, so I tried to do dataset.clear but it would crash if the dataset had no values
View 4 RepliesOk I'm handling the RowPostPaint event so I can have the row's bounds so I can draw over that row in a custom manner.It looks good when it first loads, but as soon as I start scrolling, things get all wacky and aren't drawing.So when I first load the form, the grid looks like so:Looks good so far.But when I scroll to the bottom, it looks like this:It looks like the rows that aren't initially visible never get drawn, but don't even get drawn (the text anyways) even after the the row has been drawn.When I scroll back up to the top after this, it's looks like:Here is my RowPostPaint code, it's a little long but I tried to comment it so things wouldn't be too confusing.
vb.net
Private Sub dgv_paint(ByVal sender As Object, ByVal e As DataGridViewRowPostPaintEventArgs) Handles DataGridView1.RowPostPaint 'Set up
[code].....
1. How to get 0 padding/inner margin in the cells? I want just the border as a colored line at the next close pixel to the control in the cell. Or if border set to none, I want the controls with no gap.
2. How do I actually add/remove rows& columns? I thought this was by setting the .ColumnCount property, but if I set it to 3, and then try to access the third column, it gives exception, so it's obviously just two columns, although it also looks like 3 on the form. ? I created it in designer with 2 columns though. But I don't understand how this hangs together..
Dim z0, z1, z2 As New ZedGraphControl
z0.Dock = DockStyle.Fill
z1.Dock = DockStyle.Fill
[code]....
Is it possible have different colours in each of the cells of a TableLayoutPanel?
View 10 Repliesin datagridview control is there any method to merge the cells across the rows
i need to merge a button column across other rows basing on some cell values
of column 1
With every sheet music file opened, I am also loading background music file, if such exists. If music file doesn't exists, I need to clear the previous one from the sourceURL, otherwise I have wrong music playing with wrong notes. How can I do that?
HTML
Sub Play_BackgroundSoundFile()
Player.settings.autoStart = False
Dim urlpath As String = (Application.StartupPath & "UserMIDILibrary")
Dim fname As String = Path.GetFileNameWithoutExtension(pathload)
fname = fname & ".mid"
[Code] .....
in hyper teriminal when i press "ctrl+L" is to clear terminal screen how to write the code in vb.net? Hyperterminal is connecting to serial comport.when i try this it work and return line on debug
serialport.writeline ("at+cmgl=1")
i try this but not work and it still show some lines on debug
serialport.writeline (vbcrtl +"L")
serialport.WriteLine("vbCrLf + l")
I am trying to draw arrows between the cells on datagridview. The problem is, if I make graphics with:
VB.Net
Dim g As Graphics = dgwTable.CreateGraphics
Then draw something with this graphics, my lines stay behind the cells. Is there any way to draw onto the cells?Is there any way to draw arrows?
The following code records the row and column of a selected cell.
[code]...
.
If MonthDGV.Rows(selectedRowIndices(0)).Cells(selectedColumnIndices(2)).Style.BackColor = Color.White Then but that is no use. As there could numerous selected cells all over the place, how would I check the BackColor of all the selected cells.
I've been searching around a lot to figure this out. I found some code that sort of works:
VB.NET
If String.IsNullOrEmpty(CStr(Me.dgvList.Rows(i).Cells(0).Value)) Then
End If
[code].....
Is there any way to merge cells in datagridview in vb2008 like we could do it in excel?
View 6 RepliesHow can i replace selected cells in a datagridview by using copy and paste or some other method. I want to highlight a Row or Column and then replace all the highlighted cells with one value
View 3 Replies