.NET/ASP.NET/C#/VB.NET PDF Document SDK

The following ResultSet methods allow you to find out your current position in a scrollable result set (all of them throw a SQLException): boolean isBeforeFirst(): Returns true if the position is before the first row boolean isAfterLast(): Returns true if the position is after the last row boolean isFirst(): Returns true if the position is at the first row boolean isLast(): Returns true if the position is at the last row int getRow(): Returns the row number of the current row or 0 if there is no valid current row

excel barcode formula, barcode excel 2003 free download, free barcode add-in excel 2007, barcodes excel 2010 free, free excel ean barcode font, create barcode labels in excel 2010, barcode font microsoft excel 2007, how to create barcode in excel 2003, barcode generator excel 2007 free, free barcode add in for word and excel,

Consider this function with input arguments and a return value: int CINTEROPDLL_API Sum(int i, int j) { return i + j; }.

The automatic paging feature of the DataGrid is not a good solution to the problems.

The following DemoPositioning class demonstrates some of the positioning methods just described. The main() method in the class simply gets the connection and invokes _demoPositioning, which contains the main logic: /* This program demonstrates positioning in a scrollable result set. * COMPATIBLITY NOTE: runs successfully against 10.1.0.2.0 and 9.2.0.1.0. */ import java.sql.ResultSet; import java.sql.SQLException; import java.sql.PreparedStatement; import java.sql.Connection; import book.util.JDBCUtil; class DemoPositioning { public static void main(String args[]) throws Exception { Connection conn = null; try { conn = JDBCUtil.getConnection("scott", "tiger", "ora10g"); _demoPositioning( conn ); } catch (SQLException e) { // handle the exception properly - in this case, we just // print the stack trace. JDBCUtil.printException ( e ); } finally { // release the JDBC resources in the finally clause. JDBCUtil.close( conn ); } } // end of main() The method _demoPositioning() first prepares a statement whose result sets will be scroll-insensitive and read-only. (Note that the example also works for scroll-insensitive result sets.) private static void _demoPositioning( Connection conn ) throws SQLException { ResultSet rset = null; PreparedStatement pstmt = null; try { pstmt = conn.prepareStatement( "select x from t1 order by x", ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY);

Invoking the Sum function requires integer values to be marshalled to the native code and the value returned to managed code. Simple types such as integers are easy to marshal since they usually are passed by value and use types of the underlying architecture. The F# program using the Sum function is as follows: module CInterop = [<DllImport("CInteropDLL", CallingConvention=CallingConvention.Cdecl)>] extern int Sum(int i, int j) printf "Sum(1, 1) = %d\n" (CInterop.Sum(1, 1)); Parameter passing assumes the same semantics of the CLR, and parameters are passed by value for value types and by the value of the reference for reference types. Again, you use the custom attribute to specify the calling convention for the invocation.

We then invoke the utility method printRsetTypeAndConcurrencyType in the JDBCUtil class (shown right after this class code explanation), which simply prints out the statement s result set type and concurrency type based on the methods getResultSetType() and getResultSetConcurrencyType(), respectively: JDBCUtilprintRsetTypeAndConcurrencyType( pstmt ); We next get the result set and use the overloaded version of printRsetTypeAnd ConcurrencyType in the JDBCUtil class (shown right after this class code explanation), which prints out the result set type and concurrency type using the methods getType() and getConcurrencyType() in the ResultSet interface This finds out if the result set was downgraded due to some JDBC driver limitations rset = (ResultSet) pstmtexecuteQuery(); JDBCUtilprintRsetTypeAndConcurrencyType( rset ); We now start demonstrating the various positioning methods First, we go to the last row and print out the row number: rsetlast(); // go to the last row Systemoutprintln( "current position: " + rset.