Order DataTable after the population - vb.net

Question

I have a DataTable that I use to add, modify and delete data locally.
The DataTable is also used to populate a Grid.
I need to order the grid according to an integer value (importance).
I wanted to implement two buttons to increase or decrease the importance of each record.
For this reason I wrote this code:
Dim rowNumber As Integer = 0
For i As Integer = 0 To dataTable.Rows.Count - 1
'search for the selected row in the DataGridView by ID
If dataTable.Rows(i)("ID") = ID Then
rowNumber= i
End If
Next
If rowNumber <> 0 Then
dataTable.Rows(rowNumber )("Priority") -= 1
dataTable.Rows(rowNumber - 1)("Priority") += 1
End If
It works fine the first time, it changes the selected record and makes changes to all the others to adjust the order. The second time it generates an error.
This because the DataTable is not automatically sorted according to the new Priority Order.
I would like to know if there is a way to sort the DataTable after changing the original order of the records (field Priority)

Answer 1

Try using a DataView for that:
Dim dv As New DataView(dataTable)
dv.Sort = "Priority"
Then use the dv as the DataSource for the grid.
Based on your comments, I think you need to find the row that has the other priority number:
Dim rowNumber As Integer = 0
Dim priorityNumber As Integer = 0
For i As Integer = 0 To dt.Rows.Count - 1
If dt.Rows(i)("ID") = ID Then
rowNumber = i
priorityNumber = dt.Rows(i)("Priority")
dt.Rows(i)("Priority") -= 1
End If
Next
For i As Integer = 0 To dt.Rows.Count - 1
If dt.Rows(i)("ID") <> ID AndAlso dt.Rows(i)("Priority") = priorityNumber Then
dt.Rows(i)("Priority") += 1
End If
Next