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public class Project { private Guid _id = Guid.NewGuid(); private string _name = string.Empty; public Guid Id { get { return _id; } } public string Name { get { return _name; } set { if (value == null) value = string.Empty; if(value.Length > 50) throw new Exception("Name too long"); _name = value; } } } This defines a business object that represents a project of some sort. All that is known at the moment is that these projects have an ID value and a name. Notice, though, that the fields containing this data are private you don t want the users of your object to be able to alter or access them directly. If they were public, the values could be changed without the object s knowledge or permission. (The _name field could be given a value that s longer than the maximum of 50 characters, for example.) The properties, on the other hand, are public. They provide a controlled access point to the object. The Id property is read-only, so the users of the object can t change it. The Name property allows its value to be changed, but enforces a business rule by ensuring that the length of the new value doesn t exceed 50 characters. vb.net code 39 reader VB . NET Image: Example to Read Code 39 Barcode with VB . NET Codes in ...
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Free to download .NET, C#, VB . NET barcode reader app for Code 39 ; C# Code 39 recognition SDK; VB . NET Code 39 recognition SDK. Benchmarking the Use of Numeric Extensions for Retrieving Numeric Collection Elements In this section we take a look at how much the elapsed time improves if we use the Oracle extension methods (such as getIntArray()) instead of the three alternative data retrieval methods (getArray(), getOracleArray(), and getResultSet()). As a first step, we create the schema on which the benchmark will be run. We begin by creating a nested table of number called number_table_type: benchmark@ORA10G> create or replace type number_table_type as table of number; 2 / Type created. Next, we create a table with a column of type number_table_type: benchmark@ORA10G> create table number_table_nt 2 ( 3 nt_col number_table_type 4 ) 5 nested table nt_col store as number_nt; Table created. We then populate the table with one row in which the nested table contains 10,000 random numbers. (For details on the function cast and the keyword multiset, please see the section Creating a Table Containing a Column of the Varray Type of 8.) We then commit the data and query the nested table column data to verify the number of rows in the nested table: benchmark@ORA10G> insert into number_table_nt 2 select 3 cast 4 ( 5 multiset 6 ( 7 select round( dbms_random.value(), 2)*100 8 from all_objects 9 where rownum <= 10000 10 ) as number_table_type 11 ) 12 from dual; 1 row created. benchmark@ORA10G> commit; Commit complete. benchmark@ORA10G> select count(*) from number_table_nt t, table( t.nt_col) v; 10000 birt pdf 417, microsoft word ean 13, birt gs1 128, birt barcode free, birt data matrix, word data matrix code vb.net code 39 reader read code 39 barcode with vb . net - Stack Overflow
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NET Code 39 Barcode Reader , Reading Code - 39 barcode images in .NET, C#, VB . NET , ASP.NET applications. The following BenchmarkNumericExtension class extends the JBenchmark class (covered in the section Timing Java Programs of 1) to perform our comparison: /** This program compares the effect of using ARRAY methods * specific to numeric collections. We compare the following * for a numeric collection. * 1. Using getArray() * 2. Using getOracleArray() * 3. Using getResultSet() * 3. Using getIntArray() * COMPATIBLITY NOTE: * runs successfully against 9.2.0.1.0 and 10.1.0.2.0 */ import java.math.BigDecimal; import java.sql.SQLException; import java.sql.Connection; import java.sql.PreparedStatement; import java.sql.ResultSet; import oracle.sql.ArrayDescriptor; import oracle.sql.ARRAY; import oracle.sql.Datum; import book.util.JDBCUtil; import book.util.JBenchmark; import book.util.Util; class BenchmarkNumericExtension extends JBenchmark { public static void main(String args[]) throws Exception { Util.checkProgramUsage( args ); Connection conn = null; try { conn = JDBCUtil.getConnection("benchmark", "benchmark", args[0]); The method _fetchArray() retrieves the array from the database using the techniques covered earlier: ARRAY array = _fetchArray( conn ); We then execute the benchmark by invoking the method _runBenchmark() explained shortly: new BenchmarkNumericExtension()._runBenchmark( conn, new Object[] { array } ); } finally { // release JDBC resources in the finally clause. JDBCUtil.close( conn ); } } Figure 3-8. The Oracle tab of the Axapta Configuration Utility This tab is the Oracle equivalent of the SQL Server tab and everything on it should be pretty evident if you are an Oracle user, so we ll step through it quickly. Unfortunately, directly applying the kind of object-oriented design and programming I ve been talking about so far is often quite difficult in today s complex computing environments. Object-oriented programs are almost always designed with the assumption that all the objects in an application can interact with each other with no performance penalty. This is true when all the objects are running in the same process on the same computer, but it s not at all true when the objects might be running in different processes, or even on different computers. vb.net code 39 reader Visual Studio . NET Barcode Scanner Library API for . NET Barcode ...
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