VS 2005 Saving And Reloading Datagridview Rows
Mar 16, 2010
I have a datagridview control. I want to save the rows and then restore them the next time I run the program.
How do I write the rows out to an XML file?
I know how to fill the rows from an XML file. But when I've done so I can't add any more rows. It gives the following exception when I try: Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound. What can I do about this?
Or is there an easier way to save and restore the rows?
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Aug 7, 2009
i am currently trying to create an expenses calculator, the sort that includes all your monthly outgoings and give you a total. I would like to be able to fill the form in the save it + reload it when i run the program again, what is the best way to do this ?
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Mar 24, 2010
how i can make it so if somebody enters information to a textbox in a form. how can i make it so when they reopen the application theyre text is there.
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Jun 29, 2010
with a Unbound datagridview how to add a row at a specific location say for example after row 8 i want to add a row.
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May 11, 2009
how do I count all non-new rows in a datagridview?
datagridview always give a blank row at the last row, and when i do a rows.count, it always adds up
is there a way to count only non new rows, or do i just need to subtract 1 every count (which is weird)
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Aug 27, 2009
Is it possible to show columns as rows and rows as columns in DGV? If yes, how it can be done?
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Dec 8, 2009
I am loading data from a Textfile into a datagridview. I want to limit the amount of rows created at any stage to 9. How can i do this?
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Sep 6, 2009
I had a DataGridView in which i want to fetch the data from the access database,so i did this
Dim connString As String = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=Etech.mdb"
Dim myConnection As OleDbConnection = New OleDbConnection
myConnection.ConnectionString = connString
[Code]...
In the above snapshot,after fetching the data from the access database to the DataGridView,i want to remove the PplicyHolderName,PremiumAmount and a few other columns since these are the columns which do not contain any data....
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Sep 29, 2011
I'm trying to populate a datagridview with rows in the sqlserver 2005.how to use DataAdapters too well so I go back and forth between hard code and controls.I used the Datagridview control and added columns to it this way. 2 combo boxes, a check box, and 2 text boxes.The 2 combo boxes are populated with values that are already in sql Server for users to pick from. The task is displaying the description while the value is the task_ID. Here is my form on load:
Private Sub frmTimeSheet_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
currentDate = Date.Now.ToShortDateString
lblDate.Text = currentDate
[code]....
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May 10, 2010
I see the DataGridView control has a property "AllowUserToAddRows" that I can turn on or off but what if I want the ability to be context dependent. i.e. I want an event that will fire when the user attempts to add a row in which I can cancel if certain conditions aren't met but I can't find an appropriate event.
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May 5, 2010
i want to save into my sql server 2000 database multiples rows of a datagridview. i tryed something that first was working good, but i did a code change removing a column so now i'm trying to save again but i can't do it. It's shows me a message error like this: THERE ARE FEWER COLUMNS IN THE INSERT STATEMENT THAN VALUES ESPECIFIED IN THE VALUES CLAUSE. I rewrite the code, delete and add a new table and my code has the same values in the insert than my values clause. I don't know what else i have to do.
Here is my code
Private Sub cmdAceptar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmdAceptar.Click
Try
[Code]....
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Aug 23, 2011
VB6 had a feature for it's datagrid where the user could use the mouse to drag the row divider in a datagrid and when the user released the mouse button, all the rows in the datagrid would resize to match the one the user resized (Excel does the same thing if you have all rows highlighted).
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Jun 18, 2009
This happened to be once awhile ago and I thought I had the solution, but apparently I don't. Very rare, but what happens is, I'll start a new project, build my controls on the form, go into the code window and write some code. I'll save this all out, but when I reload the project, the code window comes up OK, but the design window is just gone. The code for the form and all the controls is still there in the form.designer window, but the form itself just will not appear, and there is no icon for it over in the Solution Explorer to click on
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Sep 13, 2011
I have two datagridview's both are databound. First one shows items for sale and the second stores all the items that were sold. I am trying too transfer selected rows from one to the other but no matter what I keep getting told "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound."
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Dec 14, 2011
How to display datagridview with default six blank rows and two columns.
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May 11, 2010
I have declared a webbrowser control on my form and assigned a URI to it upon load. This works fine and the webbrowser.documenttext is set to the html of the document. What I need to do is on the second run through of the program it needs to refresh the page to check if the code is still the same. I have the following code set but it appears as though after a refresh it is not working because if the code is changed it still sees the old code in webbrowser.documenttext.
browserRedgis.Refresh()
browserRedsnap.Refresh()
browserParks.Refresh()
[code]....
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Jul 4, 2012
I have my rpg, still, first time working on it n ages, and I want each user to be able to set their own personalized picture background for the game...
each character in the game has its own dedicated folder for each file that the character has relating to it...
what I want to know how to do, is to have my game copy the loaded/chosen background image to their respective characters data folder, and have the game reload/reset the games default background image, to the one piced by he player...I am having a hard time figuring out how to do this however...I've tried a lot of different things...and nothing is working yet...
here is my example code right now:
[Code].....
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Oct 29, 2009
I have added an unbound checkbox column to my DGV. I have two questions on handling it:
1. How to have a checkbox on this Column header, which on checking must check all the rows in the DGV and vice versa?
2. How do i get the Boolean value of the checked rows in DGV on event handling? In other words, how do i know what rows are selected?
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Jan 21, 2009
Is there a way to make a DataGridView's column a combo ONLY in the "new row", and a read only textbox in all other rows? I want the user to be able to make a selection from the combo box, and when the row is finished and the "new row" moves down one, I want the column to become a textbox containing the what the user selected. My grid will be bound to a table witch contains a "category" column, that is drawn from a seccond table that i want the combo box bound to.
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Jul 30, 2010
How would i delete only the successful inserted rows for insert and then move the non successful rows up and allow the user to correct the data and get it ready for an insert. If i dont delete the successful rows then i will have multiple inserts of the same dataRow and we dont want that! AND if i dont move the data up then it will have blank rows uptop and will end the try and not insert the corrected data. You can better see what logic i am trying to perform at the bottom of my code, right after I insert into the database. Here is my code.
Private Sub btnLaserGenerateTicket_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnLaserGenerateTicket.Click
'Function declarations
[code]....
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Jul 30, 2010
How would i delete only the successful inserted rows for insert and then move the non successful rows up and allow the user to correct the data and get it ready for an insert. If i dont delete the successful rows then i will have multiple inserts of the same dataRow and we dont want that! :) AND if i dont move the data up then it will have blank rows uptop and will end the try and not insert the corrected data. Here is my code.
[Code]...
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Feb 7, 2012
'Invoice Form
Dim daInvoice As New OleDbDataAdapter()
Dim dsInvoice As New DataSet()
Dim MyDataTable As DataTable
[code]...
Error...
Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound.
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Sep 2, 2010
how to add Rows programmatically to the DataGridView's rows collection when the control is data-bound? here is my code but i got error as "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound? "
[Code]...
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Feb 23, 2009
I'm saving data to a database, data from a listbox and checkboxes.In the listbox, on the form, there are 20 records and then there are 20 corresponding checkboxes.I need to save all 20 records to the database so really I need 20 new rows. What I have managed to get working so far is that it will save the last record only.Here is the code that works:
Private Sub btnSave_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSave.Click
'setup the relationship
objDataSet.Relations.Clear()
[code]...
but that's not right.How can I get to save 20 new rows to the database table?
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Jun 1, 2009
My problem is I click Save and it tells me the update is successful (via my code) but it then deletes the record and shows me the last one again, so it's not really updating.
Code:
Private Sub BindingNavigatorAddNewItem6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
Handles BindingNavigatorAddNewItem6.Click
HistoryBindingSource.AddNew()
[Code] .....
I tried just having it write "test" to a few rows.
I also have this other method (doesn't work either) that maybe a better way to try? I get an error on the dsNewRow= line saying it's not set to an instance of an object.
Code:
Private Sub SaveToolStripButton1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveToolStripButton1.Click
Dim cb As New OleDb.OleDbCommandBuilder(data)
Dim dsNewRow As DataRow
dsNewRow = ds.Tables("History").NewRow()
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Sep 1, 2011
Can anyone tell me why "Rows cannot be programmatically added to the DataGridView's rows collection when the control is data-bound." I keep getting an error "Invalid Operation Exception was Unhandled" error. All I am attempting to do is allow the user to select products from a list(or a second datagridview) and have it added to the datagridview so they do not have to type in every cell since the other cells are not visible because they do not purtain to their needs. Plus they will be able to save all items at the same time.
[Code]...
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Apr 26, 2012
It was even difficult coming up with a Question title for this.
Am not sure whether am using the right approach to my problem. See i have this datagridview that contains rows that i would like have saved back into the Database as new rows but with a column altered to a new value.
Eg
PKColumn1 FKColumn2
Column3 Column4
1 1
[Code].....
What am looking at is Change FKColumn2 (some foreign key, maybe i can also have a combo box somewhere on the form and an "import to") values to something like 2 and save the rows back to the database without loosing the original rows.
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Jul 7, 2010
trying to understand DataGridView. I can sum columns with no problems and place the result in a textbox. My problem is multipling two column rows and saving it. I receive the following error when I go to save it. "Column mapping from source column failed because the data column is a computed column. So can I compute two column row to a third and save it, if so how. My code is below:
I save.[code....]
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Jul 30, 2009
I have several problems with rows in a DataGridView. Background information: The DataGridView (DataGridViewCalib) is in one TabPage of a TabControl, some columns of the DataGridView are automatically DataGridViewCheckBoxColumn as the DataSource have some colums which are Boolean. This is a Windows Form written in VB.Net with Visual Studio 2008. The user loads an input data file.
The problems:
1) At first arrival in the TabPage, ShowDataGridViewCalib (code below) is called. All rows are then shown in the DataGridView, despite the code saying that some rows should not be visible. Breakpoints in the code show that the code do arrive at the Rows.Visible = False events. Despite all rows beeing shown a Watch in the debugger shows that:
[code]...
There are two alternative ways of handling the rows in the code. The first attempt (commented away here) is probably the "nicest".
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Jul 10, 2010
In VB.NET 2008 I've two forms 1 & 2 containing two datagridviews connected to two data source 'ACCESS 2007 tables' Now I want to select multiple rows from one datagridview (form1) & transferring these to another empty datagridview (form2) with a button_click.
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