Suppose I have a DataGridView called gridFiles.
For Each row as DataGridView in gridFiles.Rows
MsgBox(row.Cells("somekey").Value.ToString)
gridFiles.Rows.Remove(row)
Next
I will see message boxes, but only for every other row. What I think is happening is that the internal pointer for gridFiles.Rows gets off, because there is 1-fewer rows on the next iteration.
Why does this work:
_dgvHistory = DGV.Rows
For Each row As DataGridViewRow In DGV.Rows
DGV.Rows.Remove(row)
[code]....
im adding rows to a datagridview and i need to get the valuof the last row in mydatagridviewi have the following code so far:
dim row as new datagridviewrow
If DataGridView2.RowCount > 1 Then
Dim myrow As DataGridViewRow = DataGridView2.Rows(DataGridView2.RowCount - 1)
[code].....
setting a DataRowView equal to my DataGridViewRow.DataBoundItem, then using the DataRowView.Row property (In my code below).
Here's my code:
Dim tblTemp As New DataTable()
Dim row As Windows.Forms.DataGridViewRow
Dim rowView As DataRowView
[code]....
I want to copy a DataGridViewRow from DataGridView to another but when I try it I get this error:
InvalidOperationException: Row provided already belongs to a DataGridView control.
is there any other way to copy a DataGridViewRow ?
i want to change the color of a new datagridviewrow based on a string.the string can have many differant values, but will ALWAYS be a color.
dim Colorlist as new list(of string)
Colorlist.add("Red")
Colorlist.add("Blue")
for each col in colorlist
Dim myrow as new datagridviewrow
[Code]...
I have a DataGridView that is bound to a DataTable thru the code. I want to be able to modify the data when a row is selected from the Grid. How do I reference that row of data from the grid so I can convert it into the DataTable row to be updated? I'm trying to do something like this:
Dim row as DataGridViewRow = DirectCast(dgvAddress.CurrentRow, DataRow)
This isn't working. I'm getting an error basically stating that I can't convert a DataGridViewRow into a System.Data.DataRow.
[code].....
tblProductsBindingSource, tblProductsTableAdapter I have delete the tblBindingNavigator,also my DataSet consist of 2 Data Tables namely tblProducts and tblChosenProducts, at this time tblChosenProducts is empty but has all the same Table Style of tblProducts. So at Form Load every things is working fine , what I would like to do is when I click in a cell of dgProducts (the DataGridView on my Form) is to populate my second Data Table(tblChosenProducts) and update it to the database(Invent_14April),
ublic Sub DgProduct_CellClick(ByVal sender As Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DgProduct.CellClick
[code].....
I have been looping thru all of the rows in a DGV and matching a variable to a specific cell in the row to 'do stuff to that DGVRow.
For Each dgRow As DataGridViewRow In Me.dgvInsertCommercial.Rows
If dgRow.Cells("SomeColumn").Value = pid Then
'do stuff
end if
Is there a way to actually query or make a selection instead of having to loop thru all of the dgvRows?jfc
I have an unbound DataGridView control where I have defined the columns at design time.Currently to add a new row I use a like this:
gridname.row.add(value1, value2, value3, value4)
This offends my sense of good programming because if I add a column to the grid or change the order of the columns then I need to alter the line above. What I want to do is to create a new datagridviewrow complete with columns and then populate the values like so:
dr.cells("FirstName").value = value1
dr.cells("LastName").value = value2
dr.cells("Address").value = value3
Just like I do when editing an existing row in the grid.I thought I could do the following:
Dim dr as New DataGridViewRow
dr = MyGrid.RowTemplate
I thought this would give me a new row complete with cells but no values. Appartently this is the wrong property. Is there a property that will give me a blank row, but with the cell names/types that have already been defined in the grid defined in the row?Yes, I know I can take an existing row and just clear the values but when this program load, there are not always existing rows.don't tell me I am going to have to add the columns myself. dr.cell.add(cell definition)
How can I toggle the selection of a datagridview row?If I pick the Row once it should "highlight"If I pick the same row again I want it to "unhighlight"this is what I have so far in a mousedown event:
If
Selected_RowNM = Selected_RowNM_Temp Then
DataGridView1.ClearSelection()
End If
When I use a DataTable as a DataGridView's DataSource, I often have to find which row(s) a user has selected and read specific values from the DataTable (not the DataGridView). I wanted to know if there is any reliable way of determining which DataRow a DataGridViewRow is bound to especially when the user has sorted the DataGridView on a column other than the default order.
Currently, I use code of this sort:
Dim sorting = ""
If DataGrid.SortOrder <> SortOrder.None Then
'get the actual row if the results are sorted'
sorting = "[" & DataGrid.SortedColumn.Name & "]" &
[Code] .....
Is it possible to get the column names from a DataGridViewRow object?
View 4 Repliescopying a datagridview's row to another datagridview. This would include the row's cell's contents also.
View 10 RepliesThis works:
DataGridView.Rows.Add("Bla Bla Bla", value1, value2)
But if I do:
Dim newrow As New DataGridViewRow
newrow.SetValues("Bla Bla Bla", value1, value2)
If Not value1.Equals(value2) Then
[Code]....
the entire row is empty.
Why is the row full of empty cells?
Given the following code I get error
"Cannot bind to the property or column rname on the DataSource"
Public Class CustomerUpdFrm
Private RowPassed As DataGridViewRow = New DataGridViewRow ' Passed row variable
Private Sub CustomerUpdFrm_Load(sender As System.Object, e As System.EventArgs) Handles MyBase.Load
[cODE].....
DataGridViewRow.IsNewRow property is set for the bottom (empty) row. If I set a cell value in the bottom row using DataGridViewCell.Value, IsNewRow remains set. What is the correct way to programatically set a cell value in the botton row to clear IsNewRow?
View 4 RepliesI have a DataGridView that is bound to a list of objects called "BaseChange". The BaseChange objects are made up of 4 properties...
ChangeType
ChangeStatus
ChangeDescription
LastChangeDate
The datagridview has columns for all 4 values as well as a 5th (a checkbox column called "colIsSelected"). There is no problem binding the list to the grid and displaying the items. The problem is that the query that gets the selected items in the grid is giving me an implicit cast error when option strict is enabled.
This is the query...
Dim _changes As List(Of BaseChange)
_changes = (From _row As DataGridViewRow In dgvChanges.Rows() _
Where Convert.ToBoolean(_row.Cells(NAME_COLUMN_IS_SELECTED).Value) = True _
Select DirectCast(_row.DataBoundItem, BaseChange)).ToList()
...and it produces the correct results with option strict off. The implicit cast squiggle is on the "row As DataGridViewRow" code, and the full message is "Implicit conversion from 'Object' to 'System.Windows.Forms.DataGridViewRow'*".
If I exclude the "As DataGridViewRow" from the query, I get a late binding error on the _row.Cells and _row.DataBoundItem and this also fails option strict.I need this to work with Option Strict enabled, and in VB.
Is there a way to convert a DataGridViewRow object to a DataRow object?
View 2 RepliesJust had to remove remove statics and use Delegates refering to class. i have got a little problem in one of my project.I need help to resolve it.My application Connect several FTP server with the same Class.I'm using TCPclient for few specifics Commands.The problem : All threads call the same TCPclient wich can't connect several server at once.I would like to create a New TCPclient for each thread.
[Code]...
I'm trying to remove individual nodes from their parent, I tried the Remove method but it doesn't seem to be working. How is this done? Is this a bug or what?
Sub Main()
Dim xml =
<?xml version="1.0" encoding="utf-8"?>
[Code].....
How can i remove an array item by selecting an item from listobx and press remove/delete button?for an example, if i want remove index 2 from listbox, so the array should remove index 2 item and move the item of index 3 to index 2 and so on.
View 7 RepliesI'm trying to get a ComboBox to remove the 6th string in the ComboBox or an index of (5) but it doesn't remove it here is the function I am using:
if ComboBox1.items.count = 6 then
ComboBox1.Items.RemoveAt(5)
End If
why the code...
Form1.Controls.Remove(myCustomControl) ...does not remove the control.
Because whenever I remove a control and add it again, it does not Load but rather just changes its visibility from false to true and all the variables are not reloaded.
I tried to use .Dispose() but VB.net tells me thatit can't access a disposed object whenever I try to add the control again.
I've got a calculation, but if the user forgets to enter in any details, or if it is equal to itself, it comes up as 'NaN'.How can I get it to show another message if the result is to be 'NaN'?[code]
View 5 Repliestheres a bar with 'x for close' 'square for maximize' and '- for minimize'how do i get rid of that, i forgot what its called.like where it says 'form 1' for example
View 7 Replies"Image.png"
How do I remove the .png part? My program seems to be having trouble with it..
I have a DataGridView with 7 cells, in every cell I'm into if i press escape the current row is removed thou an event i made named Public Event EscapeOnFirstRowPressed with no problem, and brings me the control to each initial state. The general idea of this process is when all the cells are fulfilled then
[Code]....
In order to initialize my VouchersDGV Data Grid View I'm Using the following
DGV.AllowUserToDeleteRows = True
For i = 1 To DGV.RowCount - 1
DGV.Rows.Remove(DGV.Rows(i - 1))
DGV.Refresh()
Next
But when I'm runing it for the first time I take the error of {"Uncommitted new row cannot be deleted."} System.InvalidOperationException If I will continue and run my code and write a new row in my Data Grid and I will try to initialize again (now I have two rows, one has the data and the other is empty) I take this error {"Uncommitted new row cannot be deleted."} System.InvalidOperationException
This is my code i tried but it removes 2 lines not one
Dim b As String() = Split(TextBox1.Text, vbNewLine)
TextBox1.Text = String.Join(vbNewLine, b, 1, b.Length - 1)