Is paging in DataGridView possible? - vb.net

Question

Is paging in DataGridView possible in VB.NET?
I've successfully connected to a database and is able to import the data into the DataGrid, but the problem is that the table i have is huge with over 10mil rows. So showing in all in one view is either slowing down the loading time, or if i choose to add more columns of data the application will turn out to be an error.
For example, this line would work
cmd.CommandText = "SELECT primaryTitle, startYear, runtimeMinutes, genres, FROM Basics"
but this line would throw me an error called System.OutOfMemoryException
cmd.CommandText = "SELECT primaryTitle, startYear, runtimeMinutes, genres, directors, writers FROM Basics, Crew"
Any help would be appreciated.
This is my current code. The only thing i've done is importing the data into the DataGridView, nothing more since i can't proceed anymore.
Public Class Form1
Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
Dim con As New SqlClient.SqlConnection
con.ConnectionString = "Data Source=DESKTOP-7SOUE1N\SQLEXPRESS;Initial Catalog=IMDb MOVIE DATABASE SYSTEM;Integrated Security=True"
con.Open()
Dim cmd As New SqlClient.SqlCommand
cmd.Connection = con
cmd.CommandText = "SELECT primaryTitle, startYear, runtimeMinutes, genres, directors, writers FROM Basics, Crew"
Dim rdr As SqlClient.SqlDataReader = cmd.ExecuteReader
Dim dt As New DataTable
dt.Load(rdr)
rdr.Close()
DataGridView1.DataSource = dt
con.Close()
End Sub
End Class

Answer 1

Yes, certainly is. This is how I usually do it.
Prerequisities:
DataGridView DataGridView1
ToolStrip ToolStrip1
TextBox PageNo
Label PageCount
Button btnPageBack
Button btnPageNext
Label TotalShown
Label OutOfTotalRecords
(some labels like "Page", " from ", "Total shown ", " out of ", " records")
Dim RowsPerPage as Int16 = 40 ' set
This is how the ToolStrip bellow DataGridView footer looks in designer:
Fetching or updating the list SQL (wrapped in LoadListOfRecords() sub):
"SELECT
...
ORDER BY " & dgwSortCol & " " & dgwSortOrder & " " &
OFFSET " & ((IIf(Me.PageNo.Text = "", 1, CInt(Me.PageNo.Text)) - 1) * RowsPerPage) & "
ROWS FETCH NEXT " & RowsPerPage & " ROWS ONLY; "
You might skip ORDER at first. But notice OFFSET xx ROWS, which tells where in database it should start to read records (by how many records to offset it from beginning) and FETCH NEXT xx ROWS ONLY, which tells how many rows to read and load to a "page". I skipped stuff like creating DataSet, reading DataTable, assigning it to DataGridView's DataSource and such.
Button Back (I won't put Next, it's nearly identical, just changed limiting condition and iteration):
Private Sub btnPageBack_Click(sender As System.Object, e As System.EventArgs) Handles btnPageBack.Click
If CInt(Me.PageNo.Text) > 1 Then
Me.PageNo.Text = CInt(Me.PageNo.Text) - 1
End If
Call LoadListOfRecords()
End Sub
Manual entry of page number (go to particular page), following Enter key stroke:
Private Sub PageNo_KeyDown(sender As System.Object, e As System.Windows.Forms.KeyEventArgs) Handles PageNo.KeyDown
Call LoadListOfRecords()
End Sub
And that's about it. Simple, easy to use by users, works as charm, proven by time. No clutter of 3rd party controls and libraries.