i have a form and a datagridview in form i work with backgroundworker in here i want invisible a column in my datagrid i use delegate for it but i have error
Delegate
Sub SetDgvLastIssuedCard_Columns_Delegate(ByVal
[DataGridView] As DataGridView,
[code]....
i'm using two backgroundworker on two different invisible forms.One bgworker starts to work before the second, it depends on the cpu usage calculated every minute.
When the second bgworker starts to work, an operation me.invoke is called to show a message, but when the code reachs the comand, the system give me this exception : impossible to call invoke or begininvoke method without a form handle.The me.invoke method is called during the dowork fase of the bgWorker.
How do I make a column invisible in a gridview? I tried to use this:
dataGridView.Columns(0).Visible = False
But its getting an error "Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index". How can I do this?
Dim Application = From AL In db.AnnualLeave _
Where AL.Approval <> True _
Select LeaveID, EmpID, Name
[code]....
after calling `GridView3.DataBind(), why do i still get Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index.at this line of code GridView3.Columns(1).Visible = False yet the grid has rows and more than 2 columns. Note that the Gridview columns have NOT been defined at design time.
i have a bounded datagridview with a checkbox column
I want to set to invisible all rows not checked:
For Each oRow As DataGridViewRow In dgMulti.Rows
oRow.Visible = (CInt(oRow.Cells("Checked").Value) <> 0)
Next
But if if have 5 rows and i check last 4 and selection is on 1st row, the 1st row is set to visible = false but still showing
Public Sub View_Rows(ByVal e, ByVal Type)
rowcount = DataGridView1.RowCount
For i As Integer = 0 To rowcount - 1
[code].....
Im looking for an event that fires after a user enters a tabbed page and after the datagridview on that tabbed page is painted. BUT only fires on the load, not every single time the datagridview is painted. I am making rows in the datagrid invisible to the user based on wether or not a checkbox in the row is checked.
If I do this on the Tab_Enter event it paints the datagrid before I can loop through the records and change the visible property And if I do this on the Datagridview_Paint event it fires everytime the datagrid is painted (I only want it to fire once)
[Code]....
I have a DataGridView in my VB.net Form. I need to make some rows invisible based on a value. As there is not GridviewrowdataBound, I am trying to achieve it as shown in the below Code
Private Sub DataGridView1_CellFormatting(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellFormattingEventArgs) Handles DataGridView1.CellFormatting[code].....
When I try to do this I am getting the Uncommitted new row cannot be made visible error.
Have you tried setting some dimensions for the grid? i.e. width/height.
View 1 RepliesI am currently using a DevExpress (10.2) Banded GridView within my Visual Studio 2010 project. It works great except I was have an area where I allow the user to choose which columns they want visible or invisible. I noticed that if I make all the columns within a band invisible the band still remains and gives an empty column in my grid. I was wondering if there is some way to automatically
View 1 RepliesI have a datagridview I am displaying on a form and would like to format one of the columns differently then the available formats. I have a column that is a decimal(18,2) (in the table) named "MyDecimalField". In asp.net I could do this, in the "template field" of a datagrid.
math.round(MyDecimalField / 60 , 2)
In VB.net forms I cant figure out how to do that. Basically I need to divide the cell by 60 and round that to 2 decimal places.
IE
the Cell contains this: 1283.93
I want the user to see this: 21.40
1283.93 / 60 = 21.3988333 then round it to 21.40
I am trying to add a checkbox column to a DataGridView in a simple window forms application.
I am pulling back some data from a database using ADO.NET, putting into a datatable, and then setting the datagridview datasource to the datatable. I then want to add a checkbox column as the second column. So far I have this code that seems to work:
' Code here to connect to database
Dim da As New SqlDataAdapter(cmd)
Dim dt As New DataTable
[Code].....
This code 'works' and I get MyDataGridView to show the data with the checkbox column in the correct position in the table.
However, for some reason, I cannot check any of the check boxes in the DataGridView? I have tried lots of things (e.g.altering the readonly state of the column) but cannot get it to work.
Best way to describe this is with an example:Create a new form, stick a DataGridView on itAnchor it to top, bottom, left, rightSet AutoSizeColumnsMode to FillAdd X columns. I added 7, in a grid size of 545, 227Run your project The grid is filled with the 7 columns, column headers all displaying nicely.
Maximise the form, same thing, all looks good. Restore the form. Column 6 is no longer correctly sized. Why? And any ideas how I fix it?
I have a MainForm which contain SecondaryForm as a control of the MainForm.SecondaryForm contains DataGridView which loads data from sql server and I add a collumn named SUM that SUMs all the values of the same row. This is provided within the LOAD event of the SecondaryForm.When SecondaryForm.Load events finishes, the program goes back to MainForm right after the line "SecondaryForm.Show" and here the values of the column SUM disappear.When i write those values runtime, they never disappear.
View 6 Repliesis my main form.and frmpayable is frmmain's child from.in the frmpayable my code is
Dim frmreleasing As frmPostap
frmreleasing = New frmPostap(Me, release_record)
frmreleasing.MdiParent = Me.MdiParent
[code].....
I have a DGV.It has some columns.The columns are in the correct order e.g. 1,2,3,4 at design time.When I start debugging and then come back to VS, the order of the columns have changed and I have to put them back in the correct order everytime.After some testing I have realised it only occurs if
1) I make a change on the form that holds the DGV
2)Leave the form open in VS while I play the application ie. debug.
I am developing a software using microsoft visual studio basic 2010. I used a datagridview control to display a list of data from product table. What I want to do (actually I am not sure how to do it, or is there a way to do it), when I choose one of the value in one of the column inside the table, I want it to open a form that contain data(details) based on that value.
How to do it? How to call the value that I pressed, so it can be used to open a new form containing the details of that value
Example of the data: (the "system" column) SYSTEM
topaz
nex1300
Nec
If I pressed "topaz" system, it will prompt me to a new form containing the details of that "topaz" system.
How to add a checkbox column at first column of datagridview including column header?After adding, how to code to "check all" or "uncheck all"?
View 27 RepliesI am using VB.Net and I'd like to ask how could I make my form invisible while the other objects on it are visible? When I set the form's opacity property into 0%, the objects on it are affected.
View 2 RepliesIs it possible to make my Form invisible? Not putting Form1.Hide or Form1.Visible = false in Form_Loading. I want it to be invisible on startup, basically have no GUI.
View 12 RepliesI understand the properties to change a button from visible to invisible, but I need to be able to have two buttons alternate visibility when the first button is clicked.It's for a game. The first button is to "Begin Game" and on open, the invisible button that sits over it is called "Begin Again" which I would like to only appear once the Begin Game button has already been clicked. This would then trigger the "Begin Game" to become invisible.
View 3 Replies[code]....
View 3 RepliesI have a printing problem. I made a VB 2005 form with a few controls like labels and listboxes. Some of them are located at the bottom of the form and they are invisible. The problem is when I start printing the form - that invisible controls could not be printed. I tried with follows
View 3 Repliesmake a Form invisible without using the opacity?I am using VB10.
View 5 RepliesSo I have a program that only has one form in it, this form is just an "About" window that appears when a specific context menu item is clicked from the system tray icon (NotifyIcon) that is on the form.
All I want to do is make it so that when the program is launched, the form is not displayed at all and just the system tray icon appears.
I have accomplished this by doing the following but just wondered if there is a better/easier way?
1. Set the Opacity of the form to 0 in the designer
2. Set the ShowInTaskBar property to False in the designer
3. Use a timer that is started in the form Load event to call Me.Hide after 1 second
Then when I want to show the form I just set the opacity back to full and call Me.Show
I'm working on a project, and one thing it's supposed to do is make itself (the form) invisible, take a screenshot of the current screen, and the make itself visible again.[code]I made the 'FinishScreenshot function to call the 'TakeScreenShot' function, courtesy of AdamSpeight2008 and save that result as a specified image file in a specified location. the problem is, the screenshot ends up usually showing the form that was supposed to be invisible, but sometimes not (usually on the first form). I'm guessing this is because the FinishScreenshot and Take ScreenShot functions aren't finished working until after the form becomes visible again, but I'm not sure.
View 4 RepliesI'm using the command line parameters to start my applicaton. To do that, I'm using the Application Startup event:
Friend Sub MyApplication_Startup(ByVal sender As Object, ByVal e As Microsoft.VisualBasic.ApplicationServices.StartupEventArgs) Handles Me.Startup
If e.CommandLine.Count = 1 AndAlso e.CommandLine(0) = "-startintray" Then
[code]....
Code works but I can't set my startup form as invisible. It always shows itself as usual. I want to put it to system tray.
VS 2008 [RESOLVED] Making Form Invisible?
View 5 Replies1. If i have 2 projects in the same solution, how do i use one to open the other?
2. How would I open a form as Invisible and be able to still call subroutines from it?
I want my form to be invisible but I want the buttons and list-box to still be visible. So basicaly I want a bunch of floating buttons and listboxes on my screen.
View 2 Replies