is it possible to force a DataGridView to be single row only?I cannot set the AllowUserToAddRows to false as i need one row.I cannot re size the grid to display a single row as i need the horizontal scollbar.
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I am writing a VB program in VB 2008 express edition, and I need to make a simple web browser used by touch screen users. I have done making the simple web browser to browser the webpage, but when I open some links they are opened in the external IE rather than the VB web browser, how can I force all web page to be opened in the VB software?
View 2 Repliesthe datagridview seems more complicated the I thought it would be my problem is: how can I if I added three columns to my datagridview, let the program insert something with 2 variables and in the last column i would have to do some calculations with the column2 (like the sum of all rows in column2)
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How I can change the back color of a single cell of a datagridview in runtime?
View 1 RepliesWith the DataGridView I'm used to just populate them with a list of some object, using the DataSource property. Now I want to just display properties from a single object, and I'm a bit confused on how to do it.. The object is updated through an API event, and I want to select some of the properties for displaying in the DataGridView, to look like this:.where "ValueX" is the name of the properties.Now, what would be my options for binding this to the DataGridView, such that property changes are automatically updated. Since an update also must invoke the control, does that mean I must reassign all bindings, or what logic is necessary in this case?
should I bind to an array, arrayList, stringList, dataTable etc? I guess I'm not sure which type of source will allow binding. Or if I should perhaps build the columns and cells of the grid and populate them "one-by-one" to the properties of the object?
I want to only allow editing of one column in my DataGridView, but I want to allow the user to double click on any item in the row, and when the CellBeginEdit fires, force editing of my colum. I started by doing this:
Private Sub dgvCaptions_CellBeginEdit(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellCancelEventArgs) Handles dgvCaptions.CellBeginEdit
If e.ColumnIndex <> COL_CAPTION Then[code].....
But this throws an error in the BeginEdit(False) line because 'Operation is not valid because it results in a reentrant call to the BeginEdit function.' which of course it will do, but that is what I want. Is there another way to do this?
I have a DataGridView with a TextBox column (DataGridViewTextBoxColumn). I already set the AutoCompleteDataSource to a list of string values. Now, the default behavior of the TextBox column is to ONLY show the AutoComplete ListBox when something is typed. Is there a way to show/drop that ListBox on the CellEnter event or as soon as a user highlights that cell?
View 1 RepliesI need to force a DataGridView cell to update the underlying DataTable.I fill a DataTable using my adapters Fill method, then set that DataTable as my DataGridView's datasource. Lets say one of my DataGridView columns is a CheckBox column.If I left-click a checkbox in the first row and then left click a different row in the DataGridView the underlying DataTable_RowChanged event fires, which tells me the first edit I did has gone to the underlying DataTable.If I left-click the checkbox in a row and then right-click the column header to display my context menu the DataTable_ RowChanged event doesn't fire because the DataGridView row is still in edit mode.I've tried Me.DataGridView.EndEdit(),but that doesn't cause my RowChanged event to fire,I need to ensure my underlying DataTable matches the data in the DataGridView, because I am getting a subset of my original table.[code]
View 5 RepliesI have a DataGridView bound to a DataView. The DGV is setup for FullRowSelect and is ReadOnly. The first column contains a CheckBox to show that the Row is ready for processing. The user double-clicks on the row and the box is checked in the CellDoubleClick event. This works great.
I have a RadioButton on the page to hide any checked items. This allows the user to only have to look at the work that needs to be done. I use a filter on the DataView to make this happen. At the end of the CellDoubleClick, I call my ApplyFilter method, but the current row still shows up.
I got around this once before by writing some code to see if I needed to move forward or backward a row and also compared if there were any rows available, etc.
It seems to me that this relates to the value not being persisted back to the DataSet until the CurrentRow is changed in the DGV. Is there a way to force this data back into the DataSet without having to programatically change the value directly in the DataSet?
I am trying to use the DGV to view various properties from a variety of different class instances. Is it possible to bind each cell individually?
View 9 RepliesUsing the walkthrough from [URL], I implemented a DatagridView in virtual mode, totally unbound, in VB 10 Express (we are talking WinForms).
I understand that CommitEdit (DataGridViewDataErrorContexts.Commit) commits the current cell's contents to the data cache.
The example uses row-level commit, i.e. it pushes the values into a row buffer until the current row is left. Only then the row is added to (or updated in) the data store. That's exactly what I do, too.
Question -- how can I commit the current row programmatically without leaving it? (I want to commit the whole row, not just the current cell.)
If the user leaves the row, there is a RowValidating, RowValidated, RowEnter event sequence where the datastore update is taken care of. So one idea (currently my only one) was to simply re-set CurrentCell to Nothing, for example.
But I cannot just set the DataGridView's CurrentCell property to Nothing (or any cell outside of the current row) since I want to commit from within an event handler of a custom edit control created by a custom column, and I see an System.InvalidOperationException exception when setting CurrentCell there.
In fact, it is a tiny button right to a combo box, i.e. I create a DataGridViewComboBoxCell descendant which is a DataGridViewComboBoxColumn descendant's edit control. My special ComboBox cell adds a tiny button which should commit the current row. Unfortunately, that button's _Click event handler cannot change CurrentCell since DetachEditingControl throws the exception then.
Obviously, I must delay the CurrentCell re-assignment until the whole _Click event has been processed. Or what? How would I do that -- register a custom Windows message, SendMessage that one to me, and override the windows procedure of the form so it re-sets CurrentCell when this message is received? (Hello?)
There should be a rather easy way to let DataGridView commit all changes by firing the events that I handle to perform the datastore update, no?
How can I make the datagridview contains 1 row? Because I have a toolbar that have two button (forward,backward) and I need the datagridview to be single row because each row is a record in The DB. And when I press the forward button I will go to the next record. And btw, which is better this way or make the datagridview display all the records at once?
View 7 RepliesI have a DGV with a single row that I want to update with new data in a timer. What is the best way to do this? Would I just update each cell in the row individually when the timer fires?
View 3 RepliesI need to display a column called Full Name in a DataGridView, but the DataSource (datatable) does not have a FullName column. It only has FirstName and LastName columns. I'm setting up my DataGridView like this:[code]How can I set the DataPropertyName to use data from both the FirstName and LastName columns in the datatable.?
View 2 RepliesIn previous versions (VB.NET 2003) I would do
datagrid.datasource = dataset.tables(0)
datagrid.datamember = "Column1" 'Where this is the name of the column
This would show me just that column in the grid regardless of the number of columns in the dataset.
In VB.NET 2008 I do: datagridview1.datasource = dataset.tables(0)
I see all the columns.I then add:
datagridview1.datamember = "Column1" 'Where Column1 is the column name
I then have an empty grid.How does one get only a single column to show in the grid from a multi-column data source? I am using internal code to populate the datasets and tables.
I am developing a new project for my daily office use using access database with vb 2005.
In this project I have one bounded datagridview and it is ready to use.
I want to alter a particular field value in the datagridview regularly. so whenever I click the rowheader that particular field should be editable with a combobox with some value, after selection of the value and leaving that particular cell it should be updated with the appropriate record in the database.
I'm using Visual Studio 2008 and SQL Server 2008 and Crystal Reports.
Windows form with datagridview and a printbutton.
Is it possible, if I select a record in the datagridview, to print that record when I click the printbutton?
How would I go about forcing a seperate application to the foreground?
View 8 Replieshow to make a single column of a datagridview into currency format?
InventoryDataGridView.Columns(5).Name = "inventory_cost"
InventoryDataGridView.Columns(5).DataPropertyName = "inventory_cost"
InventoryDataGridView.Columns(5).Width = 70
InventoryDataGridView.Columns(5).HeaderText = "Cost"
InventoryDataGridView.Columns(5).???
I am filling datagridview with data from SQL server 2008 R2. one column is date which is stored in the data base as yyyy-mm-dd and when i retrieve it displays in the same format. I want to change the display to dd-MMM-yyyy.
Try
Connect_Design_Document_Record()
Dim cmdDrawing As New OleDbCommand("SELECT DRAWING_NO, DRAWING_DESCRIPTION, DRAWN_DATE, REVISION_NO" & _
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I have a DataGridView with two columns defined like:
Dim col As New DataGridViewColumn
col.DefaultCellStyle.BackColor = Color.FromArgb(&HFF)
col.Name = "Description"
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I have a datagridview with data in it, i have set it so you can only select the row and one at a time.However, i need to get the data from one of the cells in the selected row, i have tried this
View 2 RepliesI have a single form with a datagridview on it showing values from an oracle database. I am trying to set up a way of detecting if the row/column I click on is empty or not, just as a little exercise. I have so far got this:
Private Sub DataGridView1_CellClick(ByVal sender As Object, _
ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) _
Handles DataGridView1.CellClick
Dim c, r As Integer
c = e.ColumnIndex
r = e.RowIndex
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The message going into lbl2 shows the co-ordinate values of any box I click in but as you can see with the IF statement below I am trying to see if the system can detect whenever I click in a value that is empty (null or ''). When I run my form and populate the list with a column of names I can click in 0, 0 cell and I get a message saying the 'Box is not empty' as above.
But when I click in any of the next boxes e.g. (1,0) (2,0) etc I get this:
'Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index'
Pointing to this line of
If Not DataGridView1.Item(r, c).Value Is Nothing Then
Not sure what this means at all. I am under the impression that my piece of code is gathering the value of the item depending on the co-ordinate values. so why should this fail? What index/collection is VB talking about?
I am just wondering how to force the creation of a handle of a control before the form that it is contained on is loaded... I have tried:
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How can I populate a single DataGridView cell with input of a textbox after click event of a button?
View 6 RepliesSay I have a code with 3 methods that do some pretty intensive work. Would executing these methods on 3 seperate threads be faster then executing them one after the other on a single core cpu? And what if it's a dual core or HT?
View 8 RepliesI am trying to make a list, separated by a comma, of entries from a single column in a SQL database. I have been spending the last several days searching for a way to do this, but every thing I found either didn't work, or wasn't exactly what I was looking for.
The query will pull all the email address that are not null. What I need to know is how to take the result of that query and make it look like this:
email0@address.com, email1@address.com, email2@address.com, etc, etc, ...
I feel like I should know this, but for the life of me, I can't remember nor can I find it in any of the textbooks I have.
I am using Visual Basic 2010 and SQL Server 2005. I also have access to Visual Basic 2005 if needed.
I use SqlParameters when executing database statements. I know that I can replace a single quote with two single quotes... but in the past SqlParameters took care of this for me. I have two projects.. in one, the SqlParameter does this and it handles single quotes fine, in another, it does not and I'm at a loss why (I even copied and pasted the code):
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I am trying to update a row or a single cell in ms access through vb.net. But when i update the text box named NRIC, say for example i want to update "s4522147B" to "tr4521856C" and mean while leaving the other fields the same.
But the thing is when i make the changes in nric.text (textbox), the dataset actually updates the whole column in the table instead of the selected textbox.
Below is my code for the update part
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Whats with this??the result of:CDbl(csng(35.8))is:35.799999237060547
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