To use the Find method, the DataTable object to which the DataRowCollection object belongs must have at least one column designated as a primary key column. See the PrimaryKey property for more information about how to create a primary key column.
The following example uses the Find method to find the primary key value "2" in a collection of DataRow objects. The method returns the specific DataRow object letting you change its values, as needed.
privatevoid FindInPrimaryKeyColumn(DataTable table,
// Find the number pkValue in the primary key // column of the table.
DataRow foundRow = table.Rows.Find(pkValue);
// Print the value of column 1 of the found row.if(foundRow != null)