How to convert 2 dimensional arraylist to datatable? - vb.net

Question

I need a function that returns a datatable, from any arraylist (2 dimensions) as arguments? Thanks for your help
Creating two dimensional Arraylist:
Public Overrides Function Find(Optional ByRef conditions As ArrayList = Nothing) As System.Collections.ArrayList
Dim collection As New ArrayList
Dim cmd ......... ' Select command based on an arraylist of conditions
Dim dr As SqlDataReader = cmd.ExecuteReader()
While dr.Read()
Dim cnt As New contact
cnt .Id() = dr("id")
cnt .Name= dr("name")
'......... other columns are imported
collection.Add(cnt )
End While
dr.Close()
Return collection
End Function

Answer 1

Suitable solution found:
Public Shared Function ArrayListToDataTable(ByVal arraylist1 As ArrayList) As System.Data.DataTable
Dim dt As New System.Data.DataTable()
For i As Integer = 0 To arraylist1.Count - 1
Dim GenericObject As Object = arraylist1.Item(i)
Dim NbrProp As Integer = GenericObject.GetType().GetProperties().Count
For Each item As PropertyInfo In GenericObject.GetType().GetProperties()
Try
Dim column = New DataColumn()
Dim ColName As String = item.Name.ToString
column.ColumnName = ColName
dt.Columns.Add(column)
Catch
End Try
Next
Dim row As DataRow = dt.NewRow()
Dim j As Integer = 0
For Each item As PropertyInfo In GenericObject.GetType().GetProperties()
row(j) = item.GetValue(GenericObject, Nothing)
j += 1
Next
dt.Rows.Add(row)
Next
Return dt
End Function

Answer 2

After 2 years, Let me answer this=>
Function ConvertArrayListToDataTable(ByVal arraylist As ArrayList) As DataTable
Dim dt As DataTable = New DataTable()
If arraylist.Count <= 0 Then
Return dt
End If
Dim propertiesinfo As PropertyInfo() = arraylist(0).GetType().GetProperties()
For Each pf As PropertyInfo In propertiesinfo
Dim dc As DataColumn = New DataColumn(pf.Name)
dc.DataType = pf.PropertyType
dt.Columns.Add(dc)
Next
For Each ar As Object In arraylist
Dim dr As DataRow = dt.NewRow
Dim pf As PropertyInfo() = ar.GetType().GetProperties()
For Each prop As PropertyInfo In pf
dr(prop.Name) = prop.GetValue(ar, Nothing)
Next
dt.Rows.Add(dr)
Next
Return dt
End Function