ASP.NET PDF Viewer using C#, VB/NET

Package body created. I must point out that the preceding performance benchmark suffers from the drawback that, of necessity, I had to choose specific scenarios for updates, deletes, and selects, among other things. In particular, for comparing updates, I ran my tests on the case where I update all records of rows in the child table, which may not represent reality in general. Also, the nested tables based approach can be improved by storing the nested tables as an index-organized table as mentioned in an earlier note. Having said that, the conclusions drawn from the benchmark should more or less hold true. I used the runstats utility to measure the differences between the elapsed time for inserting 50 parents, each having 500 child records, for each of the three cases compared. To conserve space, I do not show the actual program runs, but that should not be an issue since I give the details of the package I used to run the various comparisons. Table 8-1 summarizes the elapsed times and latches for various scenarios that I observed in my runs. For each case I show in bold and within parentheses, the values normalized to the lowest value of the elapsed time or the latches for a given DML. For example, inserts in the nested tables based approach took 2.86 times the elapsed time and consumed 16.20 times the latches as compared to the relational approach.

free qr code library vb.net, onbarcode.barcode.winforms.dll download, winforms code 128, gs1 128 vb.net, ean 13 barcode generator vb.net, pdf417 vb.net, itextsharp remove text from pdf c#, replace text in pdf using itextsharp in c#, vb.net data matrix, itextsharp remove text from pdf c#,

fetch pages synchronously. This is useful for many purposes, but browsers and high-performance web crawlers will have tens or thousands of connections in flight at once. The type Microsoft.FSharp.Control.Async<'a> lies at the heart of F# asynchronous workflows. A value of type Async<'a> represents a program fragment that will generate a value of type 'a at some point in the future. Listing 13-5 shows how to use asynchronous workflows to fetch several web pages simultaneously. Listing 13-5. Fetching Three Web Pages Simultaneously open System.Net open System.IO open Microsoft.FSharp.Control.CommonExtensions let museums = ["MOMA", "http://moma.org/"; "British Museum", "http://www.thebritishmuseum.ac.uk/"; "Prado", "http://museoprado.mcu.es"] let fetchAsync(nm,url:string) = async { do printfn "Creating request for %s..." nm let req = WebRequest.Create(url) let! resp = req.GetResponseAsync()

This 1.x control has been redesigned to allow for binding to a data source control via the new DataSourceID property. These list controls have all been refactored to inherit from DataBoundControl and, thereby, expose the DataSourceID property for binding to data source controls. The bulleted list is a new addition to the list control family. This is the replacement for the DataGrid control from 1.x, and is probably the flagship control for ASP .NET 2.0. This control overcomes scores of limitations of the DataGrid, allowing for editing, selecting, paging, and sorting features, all without writing a single line of code. Consider this the new version of the DataGrid. It is only packaged in a brand new type because the changes made to it are so extensive that they are not backwards compatible. Rather than breaking all existing implementations of the DataGrid, Microsoft wisely decided to just ship a new control. While these controls have not been changed to inherit from the DataBoundControl base class, they have been modified to support the DataSourceID property and do support data source controls.

Table 8-1. Comparing Elapsed Times (in Hundredths of Seconds) and Latches for Relational Solution, Nested Table Based Solution, And Object View Based Solution for Insert, Update, and Delete

do printfn "Getting response stream for %s..." nm let stream = resp.GetResponseStream() do printfn "Reading response for %s..." nm let reader = new StreamReader(stream) let! html = reader.ReadToEndAsync() do printfn "Read %d characters for %s..." html.Length nm } for nm,url in museums do Async.Spawn (fetchAsync(nm,url)) The types of these functions and values are as follows: val museums : (string * string) list val fetchAsync : string * string -> Async<unit> When run on one of our machines via F# Interactive, the output of the code from Listing 13-5 is as follows: Creating request Creating request Creating request Getting response Reading response for for for for for MOMA... British Museum... Prado... MOMA... MOMA...

171 (1.00) 215 (1.05) 380 (1.00) 61 (1.00)

These great new additions to the Web Control collection provide a very easy facility for creating a form interface, where all columns of a table are displayed with a label on the left and a control on the right in a single column. The DetailsView provides a default rendering with VCR-style buttons to navigate through the result set, whereas the FormView provides more flexibility (and more work) by using a template-based approach (akin to the DataList). Realize that the fundamental difference with these controls, and the other data-binding controls, is that they focus on displaying a single row of data, whereas the others focus on displaying some output for each row in your data source. These advanced controls bind the HierarchicalDataSource controls to render their respective interfaces. The TreeView is an especially nice addition to the suite of tools. It s an advanced type of interface that leverages DHTML and out-of-band callbacks (see 4), but is still cross-browser compatible. The Menu and SiteMapPath work with a SiteMapDataSource to provide easy-to-use and easy-to-code navigation for your application, making you and your end users happier.