How to Insert DataTable with values into Database in Linq to sql - asp.net

Question

I want to save all record exist in a DataTable into my database. I am using Linq-to-SQL in C#.
I am using this code:
DataTable dt = null;
dt = getTable(fl.ToString()); //getting DataTable
using (DataClassesDataContext dc = new DataClassesDataContext())
{
foreach (var mt in dc.Mapping.GetTables())
{
if (dt.TableName == mt.TableName)
{
//How to insert this table values in DB??
}
}
}
Please suggest me better way to do that.
Thanks in advance.

Answer 1

Well, the whole point of using something like Linq-to-SQL is the fact that it gives you proper .NET objects to work with, instead of the clumsy, untyped DataTable.
So if you use Linq-to-SQL properly, you should retrieve your data as .NET objects using Linq-to-SQL, then you should modify your .NET objects, and use Linq-to-SQL again to store the data.
Something like this:
// set up your Linq-to-SQL DataContext
using (AdventureWorksDataContext ctx = new AdventureWorksDataContext())
{
// get some data - use the *OBJECTS* returned to you! Not a DataTable!
List<Customer> customers = ctx.Customers.Take(10).ToList();
// modify data
foreach (Customer c in customers)
{
c.ModifiedDate = DateTime.Now;
}
// save the changes
ctx.SubmitChanges();
}
So if you have a DataTable, what I'd suggest is converting those DataRows into some kind of an object type that's stored in your database, and then storing that information into the database using Linq-To-SQL - something like this:
public void SaveData(DataTable table)
{
// set up your Linq-to-SQL DataContext
using (AdventureWorksDataContext ctx = new AdventureWorksDataContext())
{
// iterate over the data rows
foreach (DataRow row in table.Rows)
{
// Convert the DataRow to an object
YourObjectType myData = ConvertDataRowToObject(row);
// add this data to the Linq-to-SQL data context
ctx.YourObjectTypes.InsertOnSubmit(myData);
}
// save the changes
ctx.SubmitChanges();
}
}