barcode reader c# Object Identity in Microsoft Office

Create QR Code in Microsoft Office Object Identity

Object Identity
Denso QR Bar Code Maker In C#
Using Barcode drawer for .NET framework Control to generate, create QR Code image in VS .NET applications.
Generate QR-Code In .NET
Using Barcode drawer for ASP.NET Control to generate, create QR image in ASP.NET applications.
Although property values are not populated until they are explicitly loaded, it is still possible to make use of the properties in expressions, as long as the expressions themselves are not enumerated until after the properties are loaded In our code sample, we can see an example of this in the following line:
QR-Code Maker In Visual Studio .NET
Using Barcode generation for .NET framework Control to generate, create QR Code 2d barcode image in VS .NET applications.
Printing QR Code In Visual Basic .NET
Using Barcode generator for Visual Studio .NET Control to generate, create QR Code image in VS .NET applications.
List announcements = ctxWebListsGetByTitle("Announcements");
Bar Code Creation In Java
Using Barcode creator for Eclipse BIRT Control to generate, create barcode image in Eclipse BIRT applications.
EAN128 Drawer In Java
Using Barcode printer for Java Control to generate, create GTIN - 128 image in Java applications.
If we were to attempt to enumerate any of the properties of the announcements object, an error would be thrown since the value has not been initialized The same is also true of the properties of the object referred to by the ctxWeb property We can use the property in an expression because an expression uses a reference to the property rather than its actual value You can see that our code sample makes use of the announcements object in various places, but we never explicitly populate it Loading an object is necessary only if its properties will be converted to a value One easy way to look at it is to consider that each object is a proxy for an appropriate server-side object Using the proxy, we can perform many of the same actions, but until we explicitly load data from the real object into the proxy, we can t use the data on the client side because it exists only on the server
Bar Code Generator In Objective-C
Using Barcode maker for iPhone Control to generate, create bar code image in iPhone applications.
Data Matrix ECC200 Generation In None
Using Barcode creator for Software Control to generate, create Data Matrix ECC200 image in Software applications.
Filtering Returned Data
Create Code 128 Code Set C In None
Using Barcode printer for Office Word Control to generate, create Code 128 Code Set A image in Office Word applications.
Data Matrix ECC200 Creation In Visual Basic .NET
Using Barcode printer for .NET framework Control to generate, create DataMatrix image in .NET applications.
When we execute the preceding code samples, a table is generated containing the field values that are returned for each list item, as shown:
Data Matrix Scanner In C#
Using Barcode recognizer for Visual Studio .NET Control to read, scan read, scan image in .NET framework applications.
Bar Code Generator In Objective-C
Using Barcode printer for iPad Control to generate, create barcode image in iPad applications.
4
Encoding ANSI/AIM Code 39 In Java
Using Barcode maker for Android Control to generate, create Code 3/9 image in Android applications.
Make 1D Barcode In Java
Using Barcode maker for Java Control to generate, create Linear Barcode image in Java applications.
Client Object Model
Recognizing Bar Code In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
Code 39 Creator In Visual Studio .NET
Using Barcode maker for Visual Studio .NET Control to generate, create USS Code 39 image in .NET framework applications.
This works well and doesn t present much of a problem when only a few items are included in the list or library But what happens if tens of thousands of items are included and we need only one or two columns Transferring all this redundant data to the client would have a major performance impact Thankfully, we can eliminate redundant data by filtering the properties that are populated by the Load method, as the following snippets show To see the results of these samples, create a new button and hook up the Click event to the sample code, as we ve done in the past few samples Here s the snippet in Silverlight:
Barcode Generator In None
Using Barcode generator for Excel Control to generate, create bar code image in Excel applications.
Decode GS1 - 13 In Visual Basic .NET
Using Barcode scanner for VS .NET Control to read, scan read, scan image in .NET applications.
private void FilterQuery_Click(object sender, RoutedEventArgs e) { ClientContext ctx = new ClientContext("Your site here"); CamlQuery query = new CamlQuery(); queryViewXml = "<View><Query><OrderBy> <FieldRef Name=\"Editor\" Ascending=\"False\" /> </OrderBy></Query></View>"; List announcements = ctxWebListsGetByTitle("Announcements"); FieldCollection fields = announcementsFields; ctxLoad(fields, fs => fsInclude( f => fHidden, f => fTitle, f => fStaticName)Where(f => fHidden == false) ); ListItemCollection listItems = announcementsGetItems(query); ctxLoad(listItems, items => itemsInclude( item => item["Title"] ));
Matrix 2D Barcode Generator In C#.NET
Using Barcode generator for .NET Control to generate, create 2D Barcode image in VS .NET applications.
Recognizing EAN 128 In VB.NET
Using Barcode scanner for Visual Studio .NET Control to read, scan read, scan image in Visual Studio .NET applications.
Part II
PART II
Presentation Layer
ctxExecuteQueryAsync((s, args) => { DispatcherBeginInvoke(() => { BuildTable(fields, listItems); }); }, (s, args) => { DispatcherBeginInvoke(() => { label1Content = argsMessage; }); });
And here s the JavaScript:
function FilteredQuery_Click() { var ctx = new SPClientContextget_current(); var query = new SPCamlQuery(); queryviewXml = "<View><Query><OrderBy> <FieldRef Name=\"Editor\" Ascending=\"False\" /> </OrderBy></Query></View>"; var announcements = ctxget_web()get_lists()getByTitle("Announcements"); var listItems = announcementsgetItems(query); ctxload(listItems,"Include(Title)"); var fields = announcementsget_fields(); ctxload(fields,"Include(Hidden,Title,StaticName)"); ctxexecuteQueryAsync(function (s, args) { var console = documentgetElementById( DemoConsole ); consoleinnerHTML = buildTable(fields, listItems); }, null); }
In the Silverlight sample, we re making use of lambda expressions and Language Integrated Query (LINQ) to filter the returned data (If you re unfamiliar with LINQ or lambda expressions, see 14 for more information) Because LINQ syntax isn t supported by JavaScript, we re using a string containing a filter expression When creating JavaScript filter strings, LINQ operations such as Where are not supported You can see that by running these samples, the resulting table contains only the Title column Although you can t see it from the output, the population of the fields collection has been filtered to include only the properties that are required for the logic The result of these changes is that the data exchanged between client and server is greatly reduced NOTE When querying lists or libraries, you need to be aware of how filtering is applied behind the scenes First, the CAML query object passed into the GetItems method is used to retrieve a list of items into memory With the item list in memory, LINQ to Objects is used to apply the filters that we re defining with the Load method This is significant, because when you re querying large lists, item-level filtering should always be done using CAML to reduce the memory usage on the server As you ll see in 13, restrictions are imposed on the number of items that can be retrieved from a list in a single query
Copyright © OnBarcode.com . All rights reserved.