[RESOLVED] [2005] displaying list(of type) in datagridview

i'm trying to display a list(of type) in a datagridview.
the datagridview has 2 columns, the 1st is a text column + the 2nd is a checkbox column. the datagridview resizes to the correct size but it doesn't display anything. what am i doing wrong?

vb.net Code:

Public Class Form1
 
    Public Structure record
        Dim lastDatetime As String
        Dim checks As Boolean
    End Structure
    Private records As New List(Of record)
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        For x As Integer = -100 To -10 Step 10
            Dim rec As New record
            Dim dt As Date = Now.AddDays(x)
            rec.lastDatetime = dt.ToString
            rec.checks = True
            records.Add(rec)
        Next
        Dim rec1 As New record
        rec1.lastDatetime = Now.ToString
        rec1.checks = False
        records.Add(rec1)
 
        dgv1.DataSource = records
        dgv1.Update()
 
    End Sub
 
End Class

Can you definitely use Structures to populate a dataGridView?

I have absolutely no idea as to the answer, just thought i'd ask. I just wonder if you are trying to bind a custom object - is the data in your strucure properly exposed if that makes sense?

Have you done this before and it has worked? If so then i'll stop talking. :)

no i haven't done it before, and i didn't know if it was possible.
i've tried a slightly different approach now, but it still doesn't work.

vb Code:

Public Class Form1
 
    Public Structure record
        Dim lastDatetime As String
        Dim checks As Boolean
    End Structure
    Private records As New List(Of record)
 
    Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
 
        For x As Integer = -100 To -10 Step 10
            Dim rec As New record
            Dim dt As Date = Now.AddDays(x)
            rec.lastDatetime = dt.ToString
            rec.checks = True
            records.Add(rec)
        Next
        Dim rec1 As New record
        rec1.lastDatetime = Now.ToString
        rec1.checks = False
        records.Add(rec1)
 
        Dim serializer As New Xml.Serialization.XmlSerializer(GetType(List(Of record)))
        Dim fs As New IO.FileStream("test.xml", IO.FileMode.Create)
        serializer.Serialize(fs, records)
        fs.Close()
 
        Dim ds As New DataSet
        ds.ReadXml("test.xml")
        ds.Tables(0).Columns(0).ColumnName = "last access time"
        ds.Tables(0).Columns(1).ColumnName = "checks?"
 
        dgv1.AutoGenerateColumns = False
        dgv1.DataSource = ds.Tables(0)
        dgv1.Update()
 
    End Sub
 
End Class

it resizes the datagridview to the right number of rows, but it still doesn't display anything

i think you'll have to use a BindingList(Of T) instead of a List(Of T). I think thats the name of it...

i've got it working with the dataset now. i did try a BindingList earlier.
i forgot to set the column properties properly.
thanks