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vb.net Object Initialiser List(Of T)

- by Tim B James

I have been looking at some C# code: List<Employee> Employees = new List<Employee>{ new Employee{firstname="Aamir",lastname="Hasan",age=20}, new Employee{firstname="awais",lastname="Hasan",age=50}, new Employee{firstname="Bill",lastname="Hasan",age=70}, new Employee{firstname="sobia",lastname="khan",age=80}, }; Now when I convert this to vb.net Dim Employees as List(Of Employee) = New List(Of Employee)() With { New Employee() With { _ .firstname = "Aamir", _ .lastname = "Hasan", _ .age = 20 _ }, _ New Employee() With { _ .firstname = "awais", _ .lastname = "Hasan", _ .age = 50 _ }, _ New Employee() With { _ .firstname = "Bill", _ .lastname = "Hasan", _ .age = 70 _ }, _ New Employee() With { _ .firstname = "sobia", _ .lastname = "khan", _ .age = 80 _ } _ } I get the error "Name of field or property being initialized in an object initializer must start with'.'." Now I can get an array of employee using the code: Dim Employees = { New Employee() With { _ .FirstName = "Aamir", _ .LastName = "Hasan", _ .Age = 20}, _ New Employee() With { _ .FirstName = "Awais", _ .LastName = "Hasan", _ .Age = 50}, _ New Employee() With { _ .FirstName = "Bill", _ .LastName = "Hasan", _ .Age = 70 _ } _ } But I would like a List(Of Employee) as it is bugging me as to why this doesnt work in vb.net?

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BPM11g Launch - Spotlight on Innovation: A Unified Business Process Management Solution June 17th 2

- by Jürgen Kress

Spotlight on Innovation: A Unified Business Process Management Solution Thursday, June 17th, 2010 10 a.m. PT / 18:00 UK / 19:00 CET Presented by: Hasan Rizvi Senior Vice President Oracle Product Management Business Process Management (BPM) is essential for managing change and increasing business visibility, agility, and efficiency. To make the most of BPM, businesses today need to benefit from a new generation of process management solutions. Join Hasan Rizvi, Senior Vice President, Oracle Product Development, as he discusses Oracle’s innovations in the new BPM Suite 11g which will define the next generation of process management. Discover how you can leverage this complete, open, and integrated BPM solution that delivers: Management of all types of processes; including system, human, document, and decision-centric A simplified path to achieving greater business visibility, agility, and efficiency A unified process foundation that simplifies process management with a unified process engine and preintegration of process subsystems User-centric design that simplifies process modeling and interaction Social BPM interaction that provides social computing in the context of BPM to simplify and add richness to collaboration Register today for this live Webcast, another edition in a series introducing the next wave of products in Oracle Fusion Middleware 11g. Did you missed our BPM 11g webcast with Clemens Utschig-Utschig? The recorded version is now available! Here is your feedback: First experience with BPMN 2.0 in Oracle BPM Studio 11g by Hajo Normann Warum Oracle BPM Studio 11g? by Torsten Winterberg Oracle BPM 11g, less is more by Léon Smiers Oracle BPM 11g Integration with ADF and WebCenter Suite by Andrejus Baranovskis Oracle BPM11g available! by Guido Schmutz Listen to more feedback here. If you are working on BPM 11g projects and you would like to attend a hands-on training session, please contact Jürgen Kress. Technorati Tags: BPM,BPMN2.0,SOA,Hasan Rizvi,SOA Partner Community

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MVVM Light with ASP.Net MVC ?

- by Hasan

Hello, I'm a big fan of MVVM Light and I use it in my WPF Application. It works Greeeeat. I have a new project in asp.net mvc. And I'm wondering : Is anyone already tried to use mvvm light and asp.net mvc ? I know that some components will obviously not work but maybe, someone has achieved to do a better job with it. Thanks for your feedback :) Hasan

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How can i use my SQL based database software from a remote area with the help of internet.

- by W. Hasan

How can i use my SQL based database software from a remote area with the help of internet. I m using a Sql based database software in my head office to maintain our material flow, like receiving, issue and some other things. Our site office is also doing the same thing. So, is it possible to give our site office access to my Software using internet? So that everyone can use the same and one software. W. Hasan

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I Can't Install or Remove Any Application

- by berkay gürsoy

when i try to install or remove an application via either software center or apt-get install they both fail and give some debconf errors below is the log please help.Sorry some of the text is not english. sudo apt-get install aptitude Paket listeleri okunuyor... Bitti Bagimlilik agaci insa ediliyor. Durum bilgisi okunuyor... Bitti Asagidaki ek paketler de yüklenecek: aptitude-common libboost-iostreams1.49.0 libcwidget3 Önerilen paketler: aptitude-doc-en aptitude-doc tasksel debtags libcwidget-dev Asagidaki YENI paketler kurulacak: aptitude aptitude-common libboost-iostreams1.49.0 libcwidget3 Yükseltilen: 0, Yeni Kurulan: 4, Kaldirilacak: 0 ve Yükseltilmeyecek: 48. 8 tam olarak kurulmadi veya kaldirilmadi. Indirilmesi gereken dosya boyutu 0 B/2.498 kB Bu islemden sonra 10,4 MB ek disk alani kullanilacak. Devam etmek istiyor musunuz [E/h]? e Use of uninitialized value in concatenation (.) or string at /usr/share/perl5/Debconf/DbDriver/File.pm line 44, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value in -e at /usr/share/perl5/Debconf/DbDriver/File.pm line 46, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value in pattern match (m//) at /usr/share/perl5/Debconf/DbDriver/File.pm line 47, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value $directory in -d at /usr/share/perl5/Debconf/DbDriver/File.pm line 48, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value $directory in concatenation (.) or string at /usr/share/perl5/Debconf/DbDriver/File.pm line 49, <DEBCONF_CONFIG> chunk 3. debconf: DbDriver "config": mkdir :Böyle bir dosya ya da dizin yok Selecting previously unselected package aptitude-common. dpkg: uyari: files list file for package 'aspell' missing; assuming package has no files currently installed dpkg: uyari: files list file for package 'ubuntu-desktop' missing; assuming package has no files currently installed dpkg: uyari: files list file for package 'vuze' missing; assuming package has no files currently installed dpkg: uyari: files list file for package 'java-wrappers' missing; assuming package has no files currently installed (Veritabani okunuyor... 198988 files and directories currently installed.) Unpacking aptitude-common (from .../aptitude-common_0.6.8.1-2ubuntu1_all.deb) ... Selecting previously unselected package libboost-iostreams1.49.0. Unpacking libboost-iostreams1.49.0 (from .../libboost-iostreams1.49.0_1.49.0-3.1ubuntu1_amd64.deb) ... Selecting previously unselected package libcwidget3. Unpacking libcwidget3 (from .../libcwidget3_0.5.16-3.4ubuntu1_amd64.deb) ... Selecting previously unselected package aptitude. Unpacking aptitude (from .../aptitude_0.6.8.1-2ubuntu1_amd64.deb) ... wicd-daemon (1.7.2.4-2ubuntu1) kuruluyor... Use of uninitialized value in concatenation (.) or string at /usr/share/perl5/Debconf/DbDriver/File.pm line 44, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value in -e at /usr/share/perl5/Debconf/DbDriver/File.pm line 46, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value in pattern match (m//) at /usr/share/perl5/Debconf/DbDriver/File.pm line 47, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value $directory in -d at /usr/share/perl5/Debconf/DbDriver/File.pm line 48, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value $directory in concatenation (.) or string at /usr/share/perl5/Debconf/DbDriver/File.pm line 49, <DEBCONF_CONFIG> chunk 3. debconf: DbDriver "config": mkdir :Böyle bir dosya ya da dizin yok dpkg: error processing wicd-daemon (--configure): installed post-installation script alt islemi çikis durumunda hata döndürdü : 1 man-db (2.6.3-1) kuruluyor... Use of uninitialized value in concatenation (.) or string at /usr/share/perl5/Debconf/DbDriver/File.pm line 44, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value in -e at /usr/share/perl5/Debconf/DbDriver/File.pm line 46, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value in pattern match (m//) at /usr/share/perl5/Debconf/DbDriver/File.pm line 47, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value $directory in -d at /usr/share/perl5/Debconf/DbDriver/File.pm line 48, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value $directory in concatenation (.) or string at /usr/share/perl5/Debconf/DbDriver/File.pm line 49, <DEBCONF_CONFIG> chunk 3. debconf: DbDriver "config": mkdir :Böyle bir dosya ya da dizin yok dpkg: error processing man-db (--configure): installed post-installation script alt islemi çikis durumunda hata döndürdü : 1 dictionaries-common (1.12.10) kuruluyor... Use of uninitialized value in concatenation (.) or string at /usr/share/perl5/Debconf/DbDriver/File.pm line 44, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value in -e at /usr/share/perl5/Debconf/DbDriver/File.pm line 46, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value in pattern match (m//) at /usr/share/perl5/Debconf/DbDriver/File.pm line 47, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value $directory in -d at /usr/share/perl5/Debconf/DbDriver/File.pm line 48, <DEBCONF_CONFIG> chunk 3. Use of uninitialized value $directory in concatenation (.) or string at /usr/share/perl5/Debconf/DbDriver/File.pm line 49, <DEBCONF_CONFIG> chunk 3. debconf: DbDriver "config": mkdir :Böyle bir dosya ya da dizin yok dpkg: error processing dictionaries-common (--configure): installed post-installation script alt islemi çikis durumunda hata döndürdü : 1 dpkg: dependency problems prevent configuration of aspell: aspell depends on dictionaries-common (>> 0.40); bununla beraber: Package dictionaries-common is not configured yet. dpkg: error processing aspell (--configure): bagimlilik sorunlari - yapilandirilmadan birakiliyor dpkg: dependency problems prevent configuration of aspell-en: aspell-en depends on aspell (>= 0.60.3-2); bununla beraber: Package aspell is not configured yet. aspell-en depends on dictionaries-common (>= 0.49.2); bununla beraber: Package dictionaries-common is not configured yet. dpkg: error processing aspell-en (--configure): bagimlilik sorunlari - yapilandirilmadan birakiliyor dpkg: dependency problems prevent configuration of hyphen-en-us: hyphen-en-us depends on dictionaries-common (>= 0.10) | openoffice.org-updatedicts; bununla beraber: Package dictionaries-common is not configured yet. openoffice.org-updatedicts paketi yüklenmedi. Package dictionaries-common which provides openoffice.org-updatedicts is not configured yet. dpkg: error processing hyphen-en-us (--configure): bagimlilik sorunlari - yapilandirilmadan birakiliyor dpkg: dependency problems prevent configuration of wicd-gtk: wicd-gtk depends on wicd-daemon (= 1.7.2.4-2ubuntu1); bununla beraber: Package wicd-daemon is not configured yet. dpkg: error processing wicd-gtk (--configure): bagimlilik sorunlari - yapilandirilmadan birakiliyor dpkg: dependency problems prevent configuration of wicd: wicd depends on wicd-daemon (= 1.7.2.4-2ubuntu1); bununla beraber: Package wicd-daemon is not configured yet. wicd depends on wicd-gtk (= 1.7.2.4-2ubuntu1) | wicd-curses (= 1.7.2.4-2ubuntu1) | wicd-cli (= 1.7.2.4-2ubuntu1) | wicd-client; bununla beraber: Package wicd-gtk is not configured yet. wicd-curses paketi yüklenmedi. wicd-cli paketi yüklenmedi. wicd-client paketi yüklenmedi. Package wicd-gtk which provides wicd-client is not configured yet. dpkg: error processing wicd (--configure): bagimlilik sorunlari - yapilandirilmadan birakiliyor aptitude-common (0.6.8.1-2ubuntu1) kuruluyor... libboost-iostreams1.49.0 (1.49.0-3.1ubuntu1) kuruluyor... libcwidget3 (0.5.16-3.4ubuntu1) kuruluyor... aptitude (0.6.8.1-2ubuntu1) kuruluyor... update-alternatives: using /usr/bin/aptitude-curses to provide /usr/bin/aptitude (aptitude) in Otomatik Mod Processing triggers for libc-bin ... ldconfig deferred processing now taking place Islem sirasinda hatalar bulundu: wicd-daemon man-db dictionaries-common aspell aspell-en hyphen-en-us wicd-gtk wicd E: Sub-process /usr/bin/dpkg returned an error code (1)

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Launch Invitation: Introducing Oracle WebLogic Server 12c

- by JuergenKress

Introducing Oracle WebLogic Server 12c, the #1 Application Server Across Conventional and Cloud Environments Please join Hasan Rizvi on December 1, as he unveils the next generation of the industry’s #1 application server and cornerstone of Oracle’s cloud application foundation—Oracle WebLogic Server 12c. Hear, with your fellow IT managers, architects, and developers, how the new release of Oracle WebLogic Server is: Designed to help you seamlessly move into the public or private cloud with an open, standards-based platform Built to drive higher value for your current infrastructure and significantly reduce development time and cost Optimized to run your solutions for Java Platform, Enterprise Edition (Java EE); Oracle Fusion Middleware; and Oracle Fusion Applications Enhanced with transformational platforms and technologies such as Java EE 6, Oracle’s Active GridLink for RAC, Oracle Traffic Director, and Oracle Virtual Assembly Builder Don’t miss this online launch event. Register now. Executive Overview Thurs., December 1, 2011 10 a.m. PT / 1 p.m. ET Presented by: Hasan Rizvi Senior Vice President, Product Development, Oracle Today most businesses have the ambition to move to a cloud infrastructure. However, IT needs to maintain and invest in their current infrastructure for supporting today’s business. With Oracle WebLogic, the #1 app server in the marketplace, we provide you with the best of both worlds. The enhancements contained in WebLogic 12c provide you with significant benefits that drive higher value for your current infrastructure, while significantly reducing development time and cost. In addition, with WebLogic you are cloud-ready. You can move your existing applications as-is to a high performance engineered system, Exalogic, and instantly experience performance and scalability improvements that are orders of magnitude higher. A WebLogic-Exalogic combination may provide your private cloud infrastructure. Moreover, you can develop and test your applications on the recently announced Oracle’s Public Cloud offering: the Java Cloud Service and seamlessly move these to your on-premise infrastructure for production deployments. Developer Deep-Dive Thurs., December 1, 2011 11 a.m. PT / 2 p.m. ET See demos and interact with experts via live chat. Presented by: Will Lyons Director, Oracle WebLogic Server Product Management, Oracle Modern Java development looks very different from even a few years ago. Technology innovation, the ecosystem of tools and their integration with Java standards are changing how development is done. Cloud Computing is causing developers to re-evaluate their development platforms and deployment options. Business users are demanding faster time to market, but without sacrificing application performance and reliability. Find out in this session how Oracle WebLogic Server 12c enables rapid development of modern, lightweight Java EE 6 applications. Learn how you can leverage the latest development technologies, tools and standards when deploying to Oracle WebLogic Server across both conventional and Cloud environments. Don’t miss this online launch event. Register now. For regular information become a member of the WebLogic Partner Community please register at http://www.oracle.com/partners/goto/wls-emea Blog Twitter LinkedIn Mix Forum Wiki Technorati Tags: Hasan Rizvi,Oracle,WebLogic 12c,OPN,WebLogic Community,Jürgen Kress

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Oracle OpenWorld Update -- General Session: Oracle Fusion Middleware Strategies Driving Business Innovation

- by Ruma Sanyal

Today we kick it off with a fantastic general session focused on Fusion Middleware by Hasan Rizvi. Oracle Fusion Middleware is the leading business innovation platform for the enterprise and the cloud. Innovative businesses today are utilizing new platform technologies for their enterprise applications—embracing social, mobile, and cloud technologies. Convergence of these three technologies opens the door for business innovation—changing how customers interact, employees collaborate, and IT manages services. Successful adoption requires a comprehensive middleware platform that delivers secure multichannel user experiences, integrates back-end systems, and supports flexible deployment. In this general session, hear from Hasan Rizvi, and many of our customers how they leverage new innovations in their applications and customers achieve their business innovation goals with Oracle Fusion Middleware. For more information about this and other Fusion Middleware sessions, review the Oracle Fusion Middleware Focus On document. Details: Tuesday, Oct 2, 10:15 AM - 11:15 AM - Moscone North - Hall D

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What is Linq?

- by Aamir Hasan

The way data can be retrieved in .NET. LINQ provides a uniform way to retrieve data from any object that implements the IEnumerable<T> interface. With LINQ, arrays, collections, relational data, and XML are all potential data sources. Why LINQ?With LINQ, you can use the same syntax to retrieve data from any data source:var query = from e in employeeswhere e.id == 1select e.nameThe middle level represents the three main parts of the LINQ project: LINQ to Objects is an API that provides methods that represent a set of standard query operators (SQOs) to retrieve data from any object whose class implements the IEnumerable<T> interface. These queries are performed against in-memory data.LINQ to ADO.NET augments SQOs to work against relational data. It is composed of three parts.LINQ to SQL (formerly DLinq) is use to query relational databases such as Microsoft SQL Server. LINQ to DataSet supports queries by using ADO.NET data sets and data tables. LINQ to Entities is a Microsoft ORM solution, allowing developers to use Entities (an ADO.NET 3.0 feature) to declaratively specify the structure of business objects and use LINQ to query them. LINQ to XML (formerly XLinq) not only augments SQOs but also includes a host of XML-specific features for XML document creation and queries. What You Need to Use LINQLINQ is a combination of extensions to .NET languages and class libraries that support them. To use it, you’ll need the following: Obviously LINQ, which is available from the new Microsoft .NET Framework 3.5 that you can download at http://go.microsoft.com/?linkid=7755937.You can speed up your application development time with LINQ using Visual Studio 2008, which offers visual tools such as LINQ to SQL designer and the Intellisense support with LINQ’s syntax.Optionally, you can download the Visual C# 2008 Expression Edition tool at www.microsoft.com/vstudio/express/download. It is the free edition of Visual Studio 2008 and offers a lot of LINQ support such as Intellisense and LINQ to SQL designer. To use LINQ to ADO.NET, you need SQL

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data source does not support server-side data paging uisng asp.net Csharp

- by Aamir Hasan

Yesterday some one mail me and ask about data source does not support server side data paging.So i write the the solution here please if you have got this problem read this article and see the example code this will help you a Lot.The only change you have to do is in the DataBind().Here you have used the SqlDataReader to read data retrieved from the database, but SqlDataReader is forward only. You can not traverse back and forth on it.So the solution for this is using DataAdapter and DataSet.So your function may change some what like this private void DataBind(){//for grid viewSqlCommand cmdO;string SQL = "select * from TABLE ";conn.Open();cmdO = new SqlCommand(SQL, conn);SqlDataAdapter da = new SqlDataAdapter(cmdO);DataSet ds = new DataSet();da.Fill(ds);GridView1.Visible = true;GridView1.DataSource = ds;GridView1.DataBind();ds.Dispose();da.Dispose();conn.Close();} This surely works. The reset of your code is fine. Enjoy coding.

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T-SQL Improvements And Data Types in ms sql 2008

- by Aamir Hasan

Microsoft SQL Server 2008 is a new version released in the first half of 2008 introducing new properties and capabilities to SQL Server product family. All these new and enhanced capabilities can be defined as the classic words like secure, reliable, scalable and manageable. SQL Server 2008 is secure. It is reliable. SQL2008 is scalable and is more manageable when compared to previous releases. Now we will have a look at the features that are making MS SQL Server 2008 more secure, more reliable, more scalable, etc. in details.Microsoft SQL Server 2008 provides T-SQL enhancements that improve performance and reliability. Itzik discusses composable DML, the ability to declare and initialize variables in the same statement, compound assignment operators, and more reliable object dependency information. Table-Valued ParametersInserts into structures with 1-N cardinality problematicOne order -> N order line items"N" is variable and can be largeDon't want to force a new order for every 20 line itemsOne database round-trip / line item slows things downNo ARRAY data type in SQL ServerXML composition/decomposition used as an alternativeTable-valued parameters solve this problemTable-Valued ParametersSQL Server has table variablesDECLARE @t TABLE (id int);SQL Server 2008 adds strongly typed table variablesCREATE TYPE mytab AS TABLE (id int);DECLARE @t mytab;Parameters must use strongly typed table variables Table Variables are Input OnlyDeclare and initialize TABLE variable DECLARE @t mytab; INSERT @t VALUES (1), (2), (3); EXEC myproc @t;Procedure must declare variable READONLY CREATE PROCEDURE usetable ( @t mytab READONLY ...) AS INSERT INTO lineitems SELECT * FROM @t; UPDATE @t SET... -- no!T-SQL Syntax EnhancementsSingle statement declare and initialize DECLARE @iint = 4;Compound Assignment Operators SET @i += 1;Row constructors DECLARE @t TABLE (id int, name varchar(20)); INSERT INTO @t VALUES (1, 'Fred'), (2, 'Jim'), (3, 'Sue');Grouping SetsGrouping Sets allow multiple GROUP BY clauses in a single SQL statementMultiple, arbitrary, sets of subtotalsSingle read pass for performanceNested subtotals provide ever better performanceGrouping Sets are an ANSI-standardCOMPUTE BY is deprecatedGROUPING SETS, ROLLUP, CUBESQL Server 2008 - ANSI-syntax ROLLUP and CUBEPre-2008 non-ANSI syntax is deprecatedWITH ROLLUP produces n+1 different groupings of datawhere n is the number of columns in GROUP BYWITH CUBE produces 2^n different groupingswhere n is the number of columns in GROUP BYGROUPING SETS provide a "halfway measure"Just the number of different groupings you needGrouping Sets are visible in query planGROUPING_ID and GROUPINGGrouping Sets can produce non-homogeneous setsGrouping set includes NULL values for group membersNeed to distinguish by grouping and NULL valuesGROUPING (column expression) returns 0 or 1Is this a group based on column expr. or NULL value?GROUPING_ID (a,b,c) is a bitmaskGROUPING_ID bits are set based on column expressions a, b, and cMERGE StatementMultiple set operations in a single SQL statementUses multiple sets as inputMERGE target USING source ON ...Operations can be INSERT, UPDATE, DELETEOperations based onWHEN MATCHEDWHEN NOT MATCHED [BY TARGET] WHEN NOT MATCHED [BY SOURCE]More on MERGEMERGE statement can reference a $action columnUsed when MERGE used with OUTPUT clauseMultiple WHEN clauses possible For MATCHED and NOT MATCHED BY SOURCEOnly one WHEN clause for NOT MATCHED BY TARGETMERGE can be used with any table sourceA MERGE statement causes triggers to be fired onceRows affected includes total rows affected by all clausesMERGE PerformanceMERGE statement is transactionalNo explicit transaction requiredOne Pass Through TablesAt most a full outer joinMatching rows = when matchedLeft-outer join rows = when not matched by targetRight-outer join rows = when not matched by sourceMERGE and DeterminismUPDATE using a JOIN is non-deterministicIf more than one row in source matches ON clause, either/any row can be used for the UPDATEMERGE is deterministicIf more than one row in source matches ON clause, its an errorKeeping Track of DependenciesNew dependency views replace sp_dependsViews are kept in sync as changes occursys.dm_sql_referenced_entitiesLists all named entities that an object referencesExample: which objects does this stored procedure use?sys.dm_sql_referencing_entities

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ASP.NET Cookies

- by Aamir Hasan

Cookies are domain specific and cannot be used across different network domains. The only domain that can read a cookie is the domain that sets it. It does not matter what domain name you set.Cookies are used to store small pieces of information on a client machine. A cookie can store only up to 4 KB of information. Generally cookies are used to store data which user types frequently such as user id and password to login to a site.The HttpCookie class defined in the System.Web namespace represents a browser cookie.Creating cookies (C#)Dim cookie As HttpCookie = New HttpCookie("UID")cookie.Value = "id"cookie.Expires = #3/30/2010#Response.Cookies.Add(cookie)cookie = New HttpCookie("username")cookie.Value = "username"cookie.Expires = #3/31/2010#Response.Cookies.Add(cookie)Creating cookies (VB.NET) HttpCookie cookie = Request.Cookies["Preferences"]; if (cookie == null) { cookie = new HttpCookie("Preferences"); } cookie["Name"] = txtName.Text; cookie.Expires = DateTime.Now.AddYears(1); Response.Cookies.Add(cookie);Creating cookies (C#) HttpCookie MyCookie = new HttpCookie("Background"); MyCookie.Value = "value"; Response.Cookies.Add(MyCookie);Reading cookies (VB.NET)Dim cookieCols As New HttpCookieCollectioncookieCols = Request.CookiesDim str As String' Read and add all cookies to the list boxFor Each str In cookieColsListBox1.Items.Add("Value:" Request.Cookies(str).Value)Next Reading cookies (C#) ArrayList colCookies = new ArrayList(); for (int i = 0; i < Request.Cookies.Count; i++) colCookies.Add(Request.Cookies[i]); grdCookies.DataSource = colCookies; grdCookies.DataBind();Deleting cookies (VB.NET)Dim cookieCols As New HttpCookieCollectioncookieCols = Request.CookiesDim str As String' Read and add all cookies to the list boxRequest.Cookies.Remove("PASS")Request.Cookies.Remove("UID")Deleting cookies (C#)string[] cookies = Request.Cookies.AllKeys; foreach (string cookie in cookies) { ListBox1.Items.Add("Deleting " + cookie); Response.Cookies[cookie].Expires = DateTime.Now.AddDays(-1); }

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ComboBox Control using silverlight

- by Aamir Hasan

DropDown.zip (135.33 kb) LiveDemo Introduction In this article i am going to explore some of the features of the ComboBox.ComboBox makes the collection visible and allows users to pick an item from the collection.After its first initialization, no matter if you bind a new datasource with fewer or more elements, the dropdown persists its original height.One workaround is the following:1. store the Properties from the original ComboBox2. delete the ComboBox removing it from its container3. create a new ComboBox and place it in the container4. recover the stores Properties5. bind the new DataSource to the newly created combobox Creating Silverlight ProjectCreate a new Silverlight 3 Project in VS 2008. Name it as ComboBoxtSample. Simple Data BindingAdd System.Windows.Control.Data reference to the Silverlight project. Silverlight UserControl Add a new page to display Bus data using DataGrid. Following shows Bus column XAML snippet:The ComboBox element represents a ComboBox control in XAML. <ComboBox></ComboBox>ComboBox XAML <StackPanel Orientation="Vertical"> <ComboBox Width="120" Height="30" x:Name="DaysDropDownList" DisplayMemberPath="Name">  </ComboBox> </StackPanel> The following code below is an example implementation Combobox control support data binding 1 By setting the DisplayMemberPath property you can specify which data item in your data you want displayed in the ComboBox. 2 Setting the SelectedIndex allows you to specify which item in the ComboBox you want selected. Business Object public class Bus { public string Name { get; set; } public float Price { get; set; } } Data Binding private List populatedlistBus() { listBus = new List(); listBus.Add(new Bus() {Name = "Bus 1", Price = 55f }); listBus.Add(new Bus() { Name = "Bus 2", Price = 55.7f }); listBus.Add(new Bus() { Name = "Bus 3", Price = 2f }); listBus.Add(new Bus() { Name = "Bus 4", Price = 6f }); listBus.Add(new Bus() { Name = "Bus 5", Price = 9F }); listBus.Add(new Bus() { Name = "Bus 6", Price = 10.1f }); return listBus; } The following line of code sets the ItemsSource property of a ComboBox. DaysDropDownList.ItemsSource = populatedlistBus(); Output I hope you enjoyed this simple Silverlight example Conclusion In this article, we saw how data binding works in ComboBox.You learnt how to work with the ComboBox control in Silverlight.

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What is New in ASP.NET 4 Web Development Overview

- by Aamir Hasan

Microsoft Recently Microsoft introduce Visual studio 2010 which have new feature's Name of some new Features are given below. In ASP.NET 4.O has focus on performance and Search Engine Optimization. I'll be taking a look at what I think are the most important new features in ASP.NET 4.Output cache extensibility Session state compression View state mode for individual control Page.MetaKeyword and Page.MetaDescription properties Response.RedirectPermanent method Routing in ASP.NET Increase the URL character length New syntax for Html Encode Predictable Client IDs Web.config file refactoring Auto-Start ASP.NET applications Improvements on Microsoft Ajax LibraryReference:ASP.NET 4 and Visual Studio 2010 Web Development Overview

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3-Tier Architecture in asp.net

- by Aamir Hasan

Three-tier (layer) is a client-server architecture in which the user interface, business process (business rules) and data storage and data access are developed and maintained as independent modules or most often on separate platforms. Basically, there are 3 layers, tier 1 (presentation tier, GUI tier), tier 2 (business objects, business logic tier) and tier 3 (data access tier). These tiers can be developed and tested separately. 3 - Tier Architecture is like following : 1. Presentation Layer 2.Data Manager Layer 3. Data Access Layer The communication between all these layers need to be done using Business Entities. 1. Presentation Layer is the one where the UI comes into picture 2. Data Manager Layer is the one where all the maipulative code is written. Basically in this layer all the functional code needs to mentioned. 3. Data Access Layer is the one which communicates directly to the database. Data from one layer to other needs to be tranformed using Entities.

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ASP.NET MVC Framework

- by Aamir Hasan

MVC is a design pattern. A reusable "recipe" for constructing your application. Generally, you don't want your user interface code and data access code to be mixed together, it makes changing either one more difficult. By placing data access code into a "Model" object and user interface code into a "View" object, you can use a "Controller" object to act as a go-between, sending messages/calling methods on the view object when the data changes and vice versa. Model-view-controller (MVC) is an architectural pattern used in software engineering. In complex computer applications that present a large amount of data to the user, a developer often wishes to separate data (model) and user interface (view) concerns, so that changes to the user interface will not affect data handling, and that the data can be reorganized without changing the user interface. The model-view-controller solves this problem by decoupling data access and business logic from data presentation and user interaction, by introducing an intermediate component: the controller.Model: The domain-specific representation of the information that the application operates. Domain logic adds meaning to raw data (e.g., calculating whether today is the user's birthday, or the totals, taxes, and shipping charges for shopping cart items). Many applications use a persistent storage mechanism (such as a database) to store data. MVC does not specifically mention the data access layer because it is understood to be underneath or encapsulated by the Model.View: Renders the model into a form suitable for interaction, typically a user interface element. Multiple views can exist for a single model for different purposes.Controller: Processes and responds to events, typically user actions, and may invoke changes on the model.

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Dynamic meta description and keyword tags for your MasterPages

- by Aamir Hasan

Today we're going to look at a technique for dynamically inserting meta tags into your master pages. By taking control of the head tag and inserting your own HtmlMeta you can easily customise these tags.Might have noticed that when you create a new master page in visual studio your <head> tag gets decorated with a runat="server" attribute.Asp.net doesn't add this kind of decoration to any other html tags (although you are free to add it if you want). So what makes the head tag special?By adding the runat="server" you're giving actually converting the control into a HtmlHead control. That doesn't particularly matter for this tutorial other than to note that given a reference to the head control you get all the extras that come with asp.net controls such as access to its controls collection.The HtmlMeta control lets us wrap up <meta> tags via asp.net code. To add a meta description we need to create an instance, set the name property, the content property, and then add it to the head: asp.net using (C#)protected void Page_Init(object sender, EventArgs e){ // Add meta description tag HtmlMeta metaDescription = new HtmlMeta(); metaDescription.Name = "Description"; metaDescription.Content = "Short, unique and keywords rich page description."; Page.Header.Controls.Add(metaDescription); // Add meta keywords tag HtmlMeta metaKeywords = new HtmlMeta(); metaKeywords.Name = "Keywords"; metaKeywords.Content = "selected,page,keywords"; Page.Header.Controls.Add(metaKeywords);}asp.net ( VB.NET )Protected Sub Page_Init(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Init ' Add meta description tag Dim metaDescription As HtmlMeta = New HtmlMeta() metaDescription.Name = "Description" metaDescription.Content = "Short, unique and keywords rich page description." Page.Header.Controls.Add(metaDescription) ' Add meta keywords tag Dim metaKeywords As HtmlMeta = New HtmlMeta() metaKeywords.Name = "Keywords" metaKeywords.Content = "selected,page,keywords" Page.Header.Controls.Add(metaKeywords)End Sub

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What is ADO ?

- by Aamir Hasan

What is ADO? ADO is a Microsoft technologyADO stands for ActiveX Data ObjectsADO is a Microsoft Active-X componentADO is automatically installed with Microsoft IISADO is a programming interface to access data in a databaseAccessing a Database from an ASP Page The common way to access a database from inside an ASP page is to: Create an ADO connection to a databaseOpen the database connectionCreate an ADO recordsetOpen the recordsetExtract the data you need from the recordsetClose the recordsetClose the connectionExample <%set conn=Server.CreateObject("ADODB.Connection")conn.Provider="Microsoft.Jet.OLEDB.4.0"conn.Open(Server.Mappath("/db/northwind.mdb"))set rs = Server.CreateObject("ADODB.recordset")rs.Open "Select * from Customers", conndo until rs.EOF for each x in rs.Fields Response.Write(x.name) Response.Write(" = ") Response.Write(x.value & "<br />") next Response.Write("<br />") rs.MoveNextlooprs.closeconn.close%>

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Microsoft F#

- by Aamir Hasan

F# brings you type safe, succinct, efficient and expressive functional programming language on the .NET platform. It is a simple and pragmatic language, and has particular strengths in data-oriented programming, parallel I/O programming, parallel CPU programming, scripting and algorithmic development. F# cannot solve any problem C# could. F# is a functional language, statically typed. F# is a functional language that supports O-O-Programming References:http://msdn.microsoft.com/en-us/fsharp/cc835246.aspx http://research.microsoft.com/en-us/um/cambridge/projects/fsharp/

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Download SQL Server 2008 R2 Express (Database Size Limit Increased to 10GB! )

- by Aamir Hasan

Yesterday i was researching about SQL Server 2008. i found New release of MS SQL Server 2008 R2, which have many new BI features and enhancements. There is a tiny cute feature that I am sure all of us will appreciate a lot. The product team has increased the Database Size limit for SQL Server 2008 R2 Express from 4 GB to 10 GB. So if you have got a growing SQL Server Express database that is close to the 4 GB Limit, hurry, upgrade to R2 Express. See the announcement from Product Team. SQL Server 2008 R2 Express download. SQL Server 2008 R2 Express Download

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SQL Server 2008 R2 Released (RTM)

- by Aamir Hasan

Microsoft announced the release of SQL Server 2008 R2 (Release to manufacturing) on (21st April 2010). See the official announcement here. The key enhancements Microsoft emphasized in the release note are: Managed self-service business intelligence (BI) for reporting and analysisEnterprise-class scalability and greater IT efficiencyPlatform integration spanning the data center to the cloud How to Get Started Download a try SQL Server R2 from the official download page.

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MS SQL Server 2008 Developer Training Kit Released

- by Aamir Hasan

The SQL Server 2008 Developer Training Kit will help you understand how to build web applications which deeply exploit the rich data types, programming models and new development paradigms in SQL Server 2008. http://www.microsoft.com/downloads/details.aspx?FamilyID=E9C68E1B-1E0E-4299-B498-6AB3CA72A6D7&displaylang=en

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Different types of Session state management options available with ASP.NET

- by Aamir Hasan

ASP.NET provides In-Process and Out-of-Process state management.In-Process stores the session in memory on the web server.This requires the a "sticky-server" (or no load-balancing) so that the user is always reconnected to the same web server.Out-of-Process Session state management stores data in an external data source.The external data source may be either a SQL Server or a State Server service.Out-of-Process state management requires that all objects stored in session are serializable.Linkhttp://msdn.microsoft.com/en-us/library/ms178586%28VS.80%29.aspx

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Date and Time Support in SQL Server 2008

- by Aamir Hasan

Using the New Date and Time Data Types Normal 0 false false false EN-US X-NONE X-NONE /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin-top:0in; mso-para-margin-right:0in; mso-para-margin-bottom:10.0pt; mso-para-margin-left:0in; line-height:115%; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} 1. The new date and time data types in SQL Server 2008 offer increased range and precision and are ANSI SQL compatible. 2. Separate date and time data types minimize storage space requirements for applications that need only date or time information. Moreover, the variable precision of the new time data type increases storage savings in exchange for reduced accuracy. 3. The new data types are mostly compatible with the original date and time data types and use the same Transact-SQL functions. 4. The datetimeoffset data type allows you to handle date and time information in global applications that use data that originates from different time zones. SELECT c.name, p.* FROM politics pJOIN country cON p.country = c.codeWHERE YEAR(Independence) < 1753ORDER BY IndependenceGO8. Highlight the SELECT statement and click Execute ( ) to show the use of some of the date functions.T-SQLSELECT c.name AS [Country Name], CONVERT(VARCHAR(12), p.Independence, 107) AS [Independence Date], DATEDIFF(YEAR, p.Independence, GETDATE()) AS [Years Independent (appox)], p.GovernmentFROM politics pJOIN country cON p.country = c.codeWHERE YEAR(Independence) < 1753ORDER BY IndependenceGO10. Select the SET DATEFORMAT statement and click Execute ( ) to change the DATEFORMAT to day-month-year.T-SQLSET DATEFORMAT dmyGO11. Select the DECLARE and SELECT statements and click Execute ( ) to show how the datetime and datetime2 data types interpret a date literal.T-SQLSET DATEFORMAT dmyDECLARE @dt datetime = '2008-12-05'DECLARE @dt2 datetime2 = '2008-12-05'SELECT MONTH(@dt) AS [Month-Datetime], DAY(@dt) AS [Day-Datetime]SELECT MONTH(@dt2) AS [Month-Datetime2], DAY(@dt2) AS [Day-Datetime2]GO12. Highlight the DECLARE and SELECT statements and click Execute ( ) to use integer arithmetic on a datetime variable.T-SQLDECLARE @dt datetime = '2008-12-05'SELECT @dt + 1GO13. Highlight the DECLARE and SELECT statements and click Execute ( ) to show how integer arithmetic is not allowed for datetime2 variables.T-SQLDECLARE @dt2 datetime = '2008-12-05'SELECT @dt2 + 1GO14. Highlight the DECLARE and SELECT statements and click Execute ( ) to show how to use DATE functions to do simple arithmetic on datetime2 variables.T-SQLDECLARE @dt2 datetime2(7) = '2008-12-05'SELECT DATEADD(d, 1, @dt2)GO15. Highlight the DECLARE and SELECT statements and click Execute ( ) to show how the GETDATE function can be used with both datetime and datetime2 data types.T-SQLDECLARE @dt datetime = GETDATE();DECLARE @dt2 datetime2(7) = GETDATE();SELECT @dt AS [GetDate-DateTime], @dt2 AS [GetDate-DateTime2]GO16. Draw attention to the values returned for both columns and how they are equal.17. Highlight the DECLARE and SELECT statements and click Execute ( ) to show how the SYSDATETIME function can be used with both datetime and datetime2 data types.T-SQLDECLARE @dt datetime = SYSDATETIME();DECLARE @dt2 datetime2(7) = SYSDATETIME();SELECT @dt AS [Sysdatetime-DateTime], @dt2 AS [Sysdatetime-DateTime2]GO18. Draw attention to the values returned for both columns and how they are different.Programming Global Applications with DateTimeOffset 2. If you have not previously created the SQLTrainingKitDB database while completing another demo in this training kit, highlight the CREATE DATABASE statement and click Execute ( ) to do so now.T-SQLCREATE DATABASE SQLTrainingKitDBGO3. Select the USE and CREATE TABLE statements and click Execute ( ) to create table datetest in the SQLTrainingKitDB database.T-SQLUSE SQLTrainingKitDBGOCREATE TABLE datetest ( id integer IDENTITY PRIMARY KEY, datetimecol datetimeoffset, EnteredTZ varchar(40)); Reference:http://www.microsoft.com/downloads/details.aspx?FamilyID=E9C68E1B-1E0E-4299-B498-6AB3CA72A6D7&displaylang=en

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Convert an Enum to String

- by Aamir Hasan

Retrieves the name of the constant in the specified enumeration that has the specified value. If you have used an enum before you will know that it can represent numbers (usually int but also byte, sbyte, short, ushort, int, uint, long, and ulong) but not strings. I created my enum and I was in the process of coding up a lookup table to convert my enum parameter back into a string when I found this handy method called Enum.GetName(). using System;public class GetNameTest { enum Colors { Red, Green, Blue, Yellow }; enum Styles { Plaid, Striped, Tartan, Corduroy }; public static void Main() {Response.Write("The 4th value of the Colors Enum is" + Enum.GetName(typeof(Colors), 3));Response.Write("The 4th value of the Styles Enum is "+ Enum.GetName(typeof(Styles), 3)); }}Reference:http://msdn.microsoft.com/en-us/library/system.enum.getname.aspxhttp://www.studentacad.com/post/2010/03/31/Convert-an-Enum-to-String.aspx

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What is ADO ?

- by Aamir Hasan

What is ADO? ADO is a Microsoft technologyADO stands for ActiveX Data ObjectsADO is a Microsoft Active-X componentADO is automatically installed with Microsoft IISADO is a programming interface to access data in a databaseAccessing a Database from an ASP Page The common way to access a database from inside an ASP page is to: Create an ADO connection to a databaseOpen the database connectionCreate an ADO recordsetOpen the recordsetExtract the data you need from the recordsetClose the recordsetClose the connectionExample <%set conn=Server.CreateObject("ADODB.Connection")conn.Provider="Microsoft.Jet.OLEDB.4.0"conn.Open(Server.Mappath("/db/northwind.mdb"))set rs = Server.CreateObject("ADODB.recordset")rs.Open "Select * from Customers", conndo until rs.EOF for each x in rs.Fields Response.Write(x.name) Response.Write(" = ") Response.Write(x.value & "<br />") next Response.Write("<br />") rs.MoveNextlooprs.closeconn.close%>

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