SqlCeResultSet Class
Assembly: System.Data.SqlServerCe (in system.data.sqlserverce.dll)
'Declaration Public Class SqlCeResultSet Inherits SqlCeDataReader Implements IEnumerable, IListSource 'Usage Dim instance As SqlCeResultSet
public class SqlCeResultSet extends SqlCeDataReader implements IEnumerable, IListSource
public class SqlCeResultSet extends SqlCeDataReader implements IEnumerable, IListSource
Not applicable.
In earlier versions of Microsoft SQL Server 2005 Compact Edition (formerly SQL Server CE), to bind controls to data, you had to use a DataSet. While a SqlCeDataReader provides better performance than a DataSet, it is a forward-only, non-updateable cursor. In SQL Server Compact Edition, the SqlCeResultSet provides a combination of functionality: the updateability and scrollability of the DataSet plus performance similar to a SqlCeDataReader.
To create a SqlCeResultSet, you must call the ExecuteResultSet method rather than using the object's constructor.
The ResultSetOptions let you specify the scrollabilty, updatability, and sensitivity (which determines if the SqlCeResultSet sees changes made by itself or others) of the SqlCeResultSet.
In the following example, a new Microsoft SQL Server 2005 Compact Edition database is created. A SqlCeResultSet is then initialized to populate the dataset with data.
Dim conn As SqlCeConnection = Nothing Try File.Delete("Test.sdf") Dim engine As New SqlCeEngine("Data Source = Test.sdf") engine.CreateDatabase() conn = New SqlCeConnection("Data Source = Test.sdf") conn.Open() Dim cmd As SqlCeCommand = conn.CreateCommand() cmd.CommandText = "CREATE TABLE myTable (col1 INT, col2 MONEY, col3 NVARCHAR(200))" cmd.ExecuteNonQuery() cmd.CommandText = "SELECT * FROM myTable" Dim rs As SqlCeResultSet = cmd.ExecuteResultSet(ResultSetOptions.Updatable Or ResultSetOptions.Scrollable) Dim rec As SqlCeUpdatableRecord = rs.CreateRecord() rec.SetInt32(0, 34) rec.SetDecimal(1, System.Convert.ToDecimal(44.66)) rec.SetString(2, "Sample text") rs.Insert(rec) Catch e As Exception MessageBox.Show(e.Message) Finally conn.Close() End Try
System.MarshalByRefObject
System.Data.Common.DbDataReader
System.Data.SqlServerCe.SqlCeDataReader
System.Data.SqlServerCe.SqlCeResultSet