query dataset with linq


I have used ado.net to return a dataset
I now need to query the dataset with linq


int event1Count = ds.where(eventId = 1);
int event2Count = ds.where(eventId = 2);

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How can I achieve this ?
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Dorababu MSenior Software EngineerCommented:
You can try as below
var results = from myRow in ds.AsEnumerable()
where myRow.Field<int>("eventId") == 1
select myRow;

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You can apply or condition if you want to filter with 2
websssCEOAuthor Commented:
that code works with a data table and not data set
NorieAnalyst Assistant Commented:

Which table in the dataset do you want to query?
käµfm³d 👽Commented:
A DataSet is a collection of DataTables. Just pick the table you want to iterate over from the Tables property. You can do that with LINQ also:

var matchingRows = ds.Tables
                     .FirstOrDefault(table => table.TableName == "X")
                     .Where(row => row.Field<int>("eventId") == 1);

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