Datagridview - Automatic Chart Update With New Data Entry
Jul 23, 2010my chart loads data from a datagridview. how can i automatically update my chart with new data if new values are inserted into the datagridview.
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Chart / DataGridView Object Refuses To Update And Designer Has Random Columns
Sep 29, 2011I have an object (ClassGPS) containing a DataTable that is exposed through the property "Satellites". My form has a bindingsource that, upon load, associates itself to a new ClassGPS object. The table has 5 columns, two of which ("PRN" and "dB") I want to chart using the new 4.0 chart tool. So the chart object's DataSource = ClassGPSBindingSource, and the DataMember = Satellites. That is all set in the designer.In ClassGPS.New(), the table is pre-loaded with 4 rows. This object is created before the form loads. When the form loads and the bindingsource is set to the created GPS object, the chart correctly updates and displays the four pre-loaded entries.On this form, I have a button that adds more entries. Tracing from the Click event, pushing the button does add the entries properly to the underlying table, and if I create a ListCHanged handler on the data source, the events are all correctly firing, but the Chart does not update to reflect the changes.
So to test, I added a Datagridview object. Just like the chart, I set its datasource to ClassGPSBindingSource, and the DataMember to Satellites. And here's where it gets weird. In the designer, the newly added DataGridView control has 4 columns in it labeled RowVersion, Row, IsNew, and IsEdit. I didn't create these columns, it does it itself. If I try to change the bindings on these columns to reflect the actual datatable names (PRN and dB) two things can happen:
1) If I hit Play (F5) to debug the program, the DataGridView looks and acts correctly inside the program and is correctly bound and updating fine as I add new data. In the designer underneath however, the changed columns have disappeared and are replaced with the original four it is creating for no apparent reason. When the debug session terminates, the columns - which just finished functioning fine in the debug session - are now gone.
2) If I hit Build, the designer destroys my columns immediately and recreates those it defaulted to.In either case, something very fishy is going on... in that the Chart, with the exact same binding settings as the datagridview, does not work but the datagridview works just fine (unless Build is hit prior to Run).Has anyone run across this? Can you reproduce it? I have bound a chart to a datatable before and it worked just fine, but it didn't have to update except when the form it was on was closed and later re-loaded.
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how to setup a automatic update
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how can be done like this
Sql - Update Data On Datagridview And Filter
Jan 30, 2012i'm getting confuse about dataset and dataview, which i either use dataset to update data or dataview to filter data, but cannot have both together at the same time. Private Sub searchStaff_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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Update Data From Datagridview To Database?
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BindingContext(TheatreBindingSource).EndCurrentEdit()
PatientTableAdapter.Update(TheatreDataSet)
PatientTableAdapter.Connection.Close()
i have spent all day trying to sort this ...any ideas and yes my theatrebindsource.allownew is set to true
Update Data On Datagridview And Filter?
Jan 30, 2012i'm getting confuse about dataset and dataview, which i either use dataset to update data or dataview to filter data, but cannot have both together at the same time.
Private Sub searchStaff_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
ds = New DataSet[code]...
how to i can have both functions"update,filter" at the same time by using what method?
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Db Update - Get All The Data From Table And Set It As The Datasource Of A DataGridView
Jul 28, 2009I have this
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which is supposed to get all the data from my table and set it as the datasource of a DataGridView. You can see where I put in two msgbox's to view how many columns are in the DGV before and after the "update". The first count gives me 22, which is the correct number. After the .DataSource and .DataMember lines are ran, the count jumps to 41 and I have no clue why. All I want to do is clear a dataset, fill it with the new data and set it as the data source of a datagridview. It appears the info is being saved to the table correctly too.
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Public Sub reloadDG()
'reloadDG is used to clean out the information currently in the datagridview and is replaced with
'current data
'calls refreshForm()
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How To Load Data From Form1 Datagridview To Another Form & Update
Jan 30, 2011All I want is to update the selected row data in form1 to another form2
Form1 Objects
Form1 = MainAppForm
DataGridView = DGVMain <= binded
Button = btnUpdate
Form2 Objects
Form2 = frmUpdate
Button = btnSubmit
15 textBoxes = you can see its name in the code below and all of them are data binded
MainAppForm Code
Pass the selectedrow data to form2 (frmUpdate)
Private Sub btnUpdateDouble_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click
If DGVMain.SelectedRows.Count = 1 Then
Try
frmUpdate.ItemIDTextBox.Text = DGVMain.CurrentRow.Cells(0).Value.ToString()
frmUpdate.PartTypeTextBox.Text = DGVMain.CurrentRow.Cells(1).Value.ToString()
frmUpdate.PartNameValueTextBox.Text = DGVMain.CurrentRow.Cells(2).Value.ToString()
frmUpdate.PackageTypeTextBox.Text = DGVMain.CurrentRow.Cells(3).Value.ToString()
frmUpdate.QuantityTextBox.Text = DGVMain.CurrentRow.Cells(4).Value.ToString()
frmUpdate.UnitTextBox.Text = DGVMain.CurrentRow.Cells(5).Value.ToString()
frmUpdate.DescriptionTextBox.Text = DGVMain.CurrentRow.Cells(6).Value.ToString()
frmUpdate.LocationTextBox.Text = DGVMain.CurrentRow.Cells(7).Value.ToString()
frmUpdate.ProjectBoardTextBox.Text = DGVMain.CurrentRow.Cells(8).Value.ToString()
frmUpdate.CommentsTextBox.Text = DGVMain.CurrentRow.Cells(9).Value.ToString()
frmUpdate.OrderCodeTextBox.Text = DGVMain.CurrentRow.Cells(10).Value.ToString()
frmUpdate.CurrencyTextBox.Text = DGVMain.CurrentRow.Cells(11).Value.ToString()
frmUpdate.UnitPriceTextBox.Text = DGVMain.CurrentRow.Cells(12).Value.ToString()
frmUpdate.SupplierTextBox.Text = DGVMain.CurrentRow.Cells(13).Value.ToString()
frmUpdate.ManufacturerTextBox.Text = DGVMain.CurrentRow.Cells(14).Value.ToString()
frmUpdate.Show()
Catch ex As Exception
System.Windows.Forms.MessageBox.Show(ex.Message)
End Try
ElseIf DGVMain.SelectedRows.Count = 0 Then
MsgBox("Please select one item to update!", MsgBoxStyle.Information, "Update")
Else
MsgBox("Updating multiple Items is not allowed!", MsgBoxStyle.Information, "Update")
End If
End Sub
Form2 Code
I want to update the data by this code, but it refresh only the data in Form1
Private Sub btnSubmit_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnSubmit.Click
Me.Validate()
Me.SparePartsBindingSource.EndEdit()
Me.SparePartsTableAdapter.Update(Me.InventoryDBDataSet.SpareParts)
'Refresh
MainAppForm.SparePartsTableAdapter.Fill(MainAppForm.InventoryDBDataSet.SpareParts)
End Sub
No problem in updating the data if I put the code below in Form2 load event
Me.SparePartsTableAdapter.Fill(InventoryDBDataSet.SpareParts)
but the problem is, it will refresh all the data in the Form2, and my code in Form1 becomes useless.
Thanks in advance!
Update Access Database With Data From Unbound Datagridview?
Oct 23, 2010I have a problem that is bugging the hell out of me..... I need to know how to update an access database from an unbound datagridview using vb.net 2008 here is my code but it dont want to work, I need the simplest way.
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Update Database With Datagridview Based On Own Data-collection
Apr 17, 2010I am populating a datagridview not with a datatable but with a list of instances of a class I created. The data for the instances is read from a database.
Looks like this:
Public Function GetSecurities() As System.Collections.Generic.List(Of Security)
Dim com As New SqlCommand
Dim rdr As SqlDataReader
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Automatic Values Comes To DataGridView From Textbox
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However the row header width is very small and you cant read the header without adjusting it. What is the formatting command to automatically size the header to fit the text?
Update ListBox When Entry Is Added To Database?
Jul 29, 2010Display a Dialog Box that asks for some user input. Take that input and add a new entry to an access datatable. Refresh a List Box that displays the Keys from the datatable. Steps 1 and 2 work just fine. After the following method is executed (without closing the program) I can open the Access Database and the data has been stored to the datatable.[code]...
View 3 Replies
