How to copy one datatable to another datatable using Linq.

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Hi,
I have one datatable which contain Employee Information like
EmpID,EmpName,EmpAdd etc...
In my datatable EmpName and EmpAdd is Encrypted. So when i bind it to grid that time i want to convert it to string.
for Ex.

DataTable dt = new DataTable();
foreach (DataRow item in dsReturn.Tables[0].Rows)
{
     DataRow dr = dt.NewRow();
     dr["EmpID"] = item["EmpID"];
     dr["EmpName"] = ConverterByteToString((byte[])item["EmpName"]);
     dr["EmpAdd"] = ConverterByteToString((byte[])item["EmpAdd"]);
     dt.Rows.Add(dr);
}

Is there any way to copy all row into new table using Linq?

This work fine but when large amount of data procedure that time it's slow. So i want to simplify it.

Posted 30-Jun-12 1:22am

Savalia Manoj M

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**Zoltán Zörgő** · Answer 1 · 2012-06-30T01:47:00

Table generic has a InsertAllOnSubmit[^] method, you can use to add multiple objects at one, like this:

C#

// dc = DataContext, assumes TableA contains items of type A
var toInsert = from b in TableB
               where ...
               select new A { ... };

TableA.InsertAllOnSubmit(toInsert);
dc.SubmitChanges();

or

C#

db
  .TableA
  .InsertAllOnSubmit(
    db
      .TableB
      .Where( ... )
      .Select(b => new A { ... })
  );

But even with deferred execution, every affected record will go all the way from the SQL server to the application and back. You better look for a server side solution. If the built-in tools are not enough, you can create .net integrated functions and procedures and add it to the server and database. This way, the data will not be serialized, will not travel, and you gain a lot of performance. If you decide to take this path, you can start here: http://msdn.microsoft.com/en-us/library/w2kae45k(v=vs.100).aspx[^]