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Is it possible to update a DataTable existing rows?

Posted on 2014-10-10
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Last Modified: 2014-10-11
I'm using a DataTable to handle detail records. The flow of logic is that a user retrieves a 1 Header Record and 1 or more Detail Records from the Database. The Detail Records are loaded into a DataGridView. Each time the user selects a Detail Record from the DGV, it loads the data into various controls on the Windows Form. What I would like to do is simply assign each DataColumn to each control and then just Update or Refresh the DataRow and then the DataTable. I'm pretty sure this can be done but not exactly sure how to execute it.

Thanks!
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Question by:BlakeMcKenna
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2 Comments
 
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Kyle Abrahams earned 500 total points
ID: 40374192
Yes it can be done.


When they click the save button you would have to:

1)  Find the DataRow in the DataTable:
Dim dr as DataRow
' find the specific row.  I'm matching the ID column in the datatable to a label id which you need to populate so you can keep track yourself.

dr = myDataTable.Rows.OfType(DataRow).Where(Function(r) r("ID") = lblID.Text).Single()

Open in new window


2) edit the row:
dr.BeginEdit()
dr("Field1") = txt1.Text
dr("field2") = ddl1.SelectedValue
'etc
dr.EndEdit

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Note that this saves it to the datatable.  You would have to push this back to the database using a dataadapter or looping over the rows.
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Author Closing Comment

by:BlakeMcKenna
ID: 40374938
Thanks Kyle...that did the trick!
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