upload.cooprotector.com | ||
.NET/ASP.NET/C#/VB.NET PDF Document SDKWhen typing the commands into F# Interactive, it is possible to test the content of the form When it first appears, a right-click on the client area is ignored After the ActiveX control is added to the form, the right-click displays the context menu of the Flash Player You can now programmatically control the player by setting the properties and invoking its methods; the generated wrapper will take care of all the communications with the ActiveX component Now we ll show an example of exposing an F# object type as a COM component There are several reasons it can be useful to expose a managed class as a COM component, but perhaps. barcode erstellen excel, free barcode generator excel, barcode generator excel kostenlos, barcode erstellen excel freeware, how to add barcode font in excel 2010, free excel barcode generator download, barcode excel 2007, creare barcode con excel 2013, barcode in excel 2010, barcode excel 2013 download,Before we delve into connection pooling, you need to understand the difference between a connection and a session in the context of Oracle. This difference is particularly useful in understanding OCI connection pooling, which the upcoming section OCI Connection Pooling covers. Most of us think of connections and sessions as being the same, but in reality they are not. A connection is a network connection or a physical pathway to the Oracle database. A session encapsulates a user s interaction with the Oracle database from the time the user has been authenticated to the time the user disconnects. A session connects to Oracle via a physical connection. Note that you could be connected to a database and yet have zero, one, or more sessions that use a given connection. In the most common case, one session corresponds to one connection this explains why we tend to consider them the same. Figure 14-1 illustrates a connection being shared by three sessions, two of which belong to the user SCOTT, and one of which belongs to the user BENCHMARK. The thick arrow represents the connection itself. Although the figure shows a two-tier system, the same concept applies to a three-tier system. You will learn in the section OCI Connection Pooling how you can open multiple sessions per physical connection. the most important is interoperability with legacy systems COM has been around for a decade and has permeated every aspect of Windows development Systems have largely used COM infrastructures, and they can also be extended using this technology COM components are heavily used by applications based on the Active Scripting architecture such as ASP or VBA in Microsoft Office The ability of exposing F# code to existing applications is useful because it allows you to immediately start using this new language and integrating it seamlessly into existing systems In this example, suppose you are exposing a simple F# object type as a COM component and invoke a method of this object type from a JScript script You define the following type in the hwfsfs file: open System type FSCOMComponent = new() as x = {} member x. Change some fields and press the button </asp:Label> <br> <uc1:RenderTextboxes id="RenderTextboxes1" runat="server" /> <br> <asp:Button Runat=server ID=btn Text='Postback' /> </form> </body> </HTML> And here s the code from the corresponding code-behind, PreRenderIE.aspx.cs: public partial class PreRenderIE : System.Web.UI.Page { private int ChangeCount = 0; override protected void OnInit(EventArgs e) { RenderTextboxes1.FieldChanged += new EventHandler(RenderTextboxes1_FieldChanged); base.OnInit(e); this.PreRender += new EventHandler(PreRenderIE_PreRender); } private void RenderTextboxes1_FieldChanged(object sender, EventArgs e) { ChangeCount++; } private void PreRenderIE_PreRender(object sender, EventArgs e) { if (this.IsPostBack) { lblOutput.Text = string.Format( "You changed {0} fields on the User Control", ChangeCount); this.Controls.Remove(this.Controls[0]); this.Controls.AddAt(0, new LiteralControl(string.Format( "<html><head><title>{0} Changes</title></head><body>", ChangeCount))); } } } Let s look at a query that lists currently opened physical connections and sessions for us. The query assumes that we re connected to Oracle in a dedicated server mode as opposed to a shared server (previously known as MTS, or multithreaded server) mode. HelloWorld() = "Hello world from F#!" The assembly that must be exposed as a COM component should be added to the global assembly cache (GAC), which is where shared NET assemblies are stored Assemblies present in the GAC must be strongly named, which means a public key cryptographic signature must be used to certify the assembly To perform the test, you generate a key pair to be used to sign the assembly using the snexe command available with the NET SDK: C:> sn k testkeysnk Microsoft (R) NET Framework Strong Name Utility Version 205072742 Copyright (c) Microsoft Corporation All rights reserved Key pair written to testkeysnk Now you can compile the program in a DLL called hwfsdll: C:\> fsc -a keyfile testkeysnk hwfs. Note In dedicated server mode, each physical connection has a separate (or dedicated) process (or
| ||