Hi, I have a piece of software that helps us rapidly change entries in our sql compact database. The issue we are having is when we insert many rows after deleting rows, the inserted rows are not in the correct order.
To attempt to clarify:
If we simply add new rows, irregardless of how many, they will always be in the correct order.
If we start by pulling a set or rows and editing them (possibly removing, adding or changing the content). Our software then deletes that block of rows, and reinserts what we have just changed. It does this instead of updating rows because some may have been removed or some may have been added. If we have only manipulated a small block of rows (say <20ish) it will insert them in the correct order. If it is a large number of rows it will scramble the order.
We have found a work around where we do this:
Pull the block of rows from the database into our software for editing.
After editing, use SDF viewer to manually select and delete those rows.
Go back to our software and reinsert the edited rows.
No matter how many rows we manipulate, if we use the work around it will insert them in the correct order.
We cannot figure out why our software scrambles the rows order.
Here is the code to delete a block of rows:
Here is the code to insert:
Any help is greatly appreciated!
To attempt to clarify:
If we simply add new rows, irregardless of how many, they will always be in the correct order.
If we start by pulling a set or rows and editing them (possibly removing, adding or changing the content). Our software then deletes that block of rows, and reinserts what we have just changed. It does this instead of updating rows because some may have been removed or some may have been added. If we have only manipulated a small block of rows (say <20ish) it will insert them in the correct order. If it is a large number of rows it will scramble the order.
We have found a work around where we do this:
Pull the block of rows from the database into our software for editing.
After editing, use SDF viewer to manually select and delete those rows.
Go back to our software and reinsert the edited rows.
No matter how many rows we manipulate, if we use the work around it will insert them in the correct order.
We cannot figure out why our software scrambles the rows order.
Here is the code to delete a block of rows:
Code:
Dim connstring As String = "Data Source='" & filelocation.Text & "';Password='***'"
Dim conn As New SqlCeConnection(connstring)
Dim CommandText As String = "delete From Cat where cat='" + catbox.Text + "'"
Dim cmd As New SqlCeCommand(CommandText, conn)
conn.Open()
Try
cmd.ExecuteNonQuery()
Catch ex As Exception
MsgBox("Error!")
End Try
conn.Close()Code:
Dim rowcount As Integer = 0
'build insert statement
Dim connstring As String = "Data Source='" & filelocation.Text & "';Password='***'"
Dim conn As New SqlCeConnection(connstring)
Dim sqlstatement As String = ""
Dim cmd As New SqlCeCommand(sqlstatement, conn)
Dim dt As New DataTable
Dim da As New SqlCeDataAdapter(cmd)
conn.Open()
DataGrid.RefreshEdit()
For Each row As DataGridViewRow In DataGrid.Rows
If DataGrid.Rows.Count - 1 > rowcount Then
If String.IsNullOrEmpty(row.Cells(0).Value) Then
row.Cells(0).Value = 0
End If
If String.IsNullOrEmpty(row.Cells(1).Value) Then
row.Cells(1).Value = ""
End If
If String.IsNullOrEmpty(row.Cells(2).Value) Then
row.Cells(2).Value = ""
End If
If String.IsNullOrEmpty(row.Cells(3).Value) Then
row.Cells(3).Value = ""
End If
If String.IsNullOrEmpty(row.Cells(4).Value) Then
row.Cells(4).Value = ""
End If
If String.IsNullOrEmpty(row.Cells(5).Value) Then
row.Cells(5).Value = ""
End If
If String.IsNullOrEmpty(row.Cells(6).Value) Then
row.Cells(6).Value = 0
End If
If String.IsNullOrEmpty(row.Cells(7).Value) Then
row.Cells(7).Value = ""
End If
If String.IsNullOrEmpty(row.Cells(8).Value) Then
row.Cells(8).Value = ""
End If
If String.IsNullOrEmpty(row.Cells(9).Value) Then
row.Cells(9).Value = 0
End If
sqlstatement = "INSERT INTO Cat(ID, Cat, Product, [Key], [Desc], link, visible, jump, prev, user) VALUES('" & idtextbox.Text & "', '" & catbox.Text & "', '" & row.Cells(2).Value.ToString & "', '" & row.Cells(3).Value.ToString & "', @descr, '" & row.Cells(5).Value.ToString & "', '" & visible & "', '" & row.Cells(7).Value.ToString & "', '" & row.Cells(8).Value.ToString & "', '" & user.Text & "')"
cmd.Parameters.Clear()
cmd.Parameters.AddWithValue("@descr", row.Cells(4).Value)
cmd.CommandText = sqlstatement
cmd.ExecuteNonQuery()
rowcount = rowcount + 1
sqlstatement = ""
End If
NextAny help is greatly appreciated!
