populate second datatable from the first

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Hi,
How can I populate datatable2 (dt2) from the first datatable1 (dt1), but I do not want dt2 to be dependant of dt1.
For example:
I am populating dt2 from dt1. But if the data in dt1 changes, so does dt2.
I do not want dt2 to change.
How can I do this for dt2 please?
Thanks

i.e.

datatable dt1 = ds.table[0]...
...

//copy the distinct field to dt2
DataTable dt2 = dt.DefaultView.ToTable(true, "FieldName");

do I have to do anything with Binding context for dt2 ?

Thanks

Posted 3-Feb-12 4:43am

arkiboys

Updated 3-Feb-12 4:52am

Sridhar Patnayak

v2

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arkiboys 3-Feb-12 10:53am

Hi Sridhar Patnayak4
Did you post anything?

2 solutions

Solution 1

Just use DataTable's Clone property[^] and then repopulate the table.

Posted 3-Feb-12 4:59am

Abhinav S

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arkiboys 3-Feb-12 11:07am

Can I do this?
DataTable dt2 = dt.DefaultView.ToTable(true, "FieldName");
DataTable dtFieldName = dt2.Clone();

lstFieldName.Items.Clear();
foreach (DataRow dr in dtFieldName.Rows)
{
lstFieldName.Items.Add(dr["FieldName"].ToString());
}

Manfred Rudolf Bihy 3-Feb-12 11:10am

After reading your solution I had to revise mine as I tried to go with DataTable.Copy(). Good point and a well deserved 5!

Cheers!

Abhinav S 3-Feb-12 23:22pm

Thank you.

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Manfred Rudolf Bihy · Accepted Answer · 2012-02-03T05:04:00

The way you are using it the DataTable (or at least the DataRows) is(are) in reality the same, identical object(s). If you do want a copy to work on that will not behave "synchronized" use the method DataTable.Clone();. See here: http://msdn.microsoft.com/en-us/library/system.data.datatable.clone.aspx[^].

C#

DataTable dt1 = ds.table[0];
DataTable dt2 = dt1.Clone();
// Populating the cloned DataTable is left as an excercise to OP :)

Regards,

Manfred