Can you suggest me how can I import a CSV file (pretty large in size) to a SQL DB using Linq in Silverlight ASP .NET project.

I have written a test app to read the records from the DB and display them on the grid using Linq.

How would I do bulk insert from such a large file (it has close to 50+ columns)?

Thanks!

Thanks for your comment.

‘~ Example of CSV file
‘~ “InvoiceNumber”,”InvoiceDate”, “FirstName”, “LastName”
‘~ “11111″,”9/1/2008″, “Jerrame”, “Hertz”
‘~ “22222″,”9/2/2008″, “John”, “Doe”
‘~ “33333″,”9/3/2008″, “Jane”, “Doe”

Imports System.IO

Module Module1
Sub Main()
ReadCSV(”c:\test.csv”)
End Sub
End Module

Module LINQ2CSV
Public Sub ReadCSV(ByVal FilePath As String)
‘~ Load the values from the CSV file.
Dim Orders = From line In File.ReadAllLines(FilePath) _
Let OrderRecord = line.Split(”,”) _
Select New Invoice() _
With {.Order = New Order( _
TrimQoutes(OrderRecord(0)), _
TrimQoutes(OrderRecord(1))), _
.Customer = New Customer( _
TrimQoutes(OrderRecord(0)), _
TrimQoutes(OrderRecord(2)), _
TrimQoutes(OrderRecord(3)))}

End Sub

‘~ Remove qoutes from string. May be able to avoid this if I use the
‘~ parse object instead of the the file object.
Private Function TrimQoutes(ByVal value As String) As String
Return value.Trim.Replace(”"”", “”)
End Function

End Module
‘~ Order object.
Public Class Invoice
Public [Order] As Order
Public [Customer] As Customer
End Class

Public Class Order
Public InvoiceNumber As String
Public InvoiceDate As String

Public Sub New(ByVal InvoiceNumber As String, ByVal InvoiceDate As String)
Me.InvoiceNumber = InvoiceNumber
Me.InvoiceDate = InvoiceDate
End Sub
End Class

Public Class Customer
Public InvoiceNumber As String
Public FirstName As String
Public LastName As String

Public Sub New(ByVal InvoiceNumber As String, ByVal FirstName As String, ByVal LastName As String)
Me.InvoiceNumber = InvoiceNumber
Me.FirstName = FirstName
Me.LastName = LastName
End Sub

End Class

The best thing about LINQ is that it comes with such a small learning curve for C# and VB.NET programmers. And if you have written any SQL then after writing few LINQ queries you feel like you knew it all the time.

In my case I feel that after a long time something (LINQ) excites me so much that I want to learn every little detail about it.

I remember I was a bit confused when I saw it for the first time. I was primary frustrated by the fact that the first operator was “from” and “select” was the last one. But then I understood the reasons.