Answer / jeyaram thangaponnan

DataSet.Tables[0].Rows.Count will give the number of rows
in that table

Answer / vaidyanathan r.

int count = 0
foreach(DataTable CurrTable in DataSet1.Tables)
Count += currTable.Rows.Count;

Answer / eduardo belmonte

Regarding answer # 3 : It is correct.

Regarding answer # 2 : It is not correct, remember a
dataset contains datatables, and those datatables each can
have its own amount of datarows.

So to know "all" datarows in a dataset you have to add how
many rows "each" of its component datatables may have.

Answer / jagadish

DS.Tables["tabname"].Rows.Count;

we can get count of the records.

Answer / pushpendra singh

DataSet.Tables[0].rows.count returns total rows in table.

Answer / guest

foreach(DataTable thisTable in myDataSet.Tables){
// For each row, print the values of each column.
foreach(DataRow myRow in thisTable.Rows)}

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