Dev Source Code

Tuesday, September 6, 2011

HTML 5 Input Type - Number

HTML 5 Number Input type control allows user to increase or decrease the value of the textbox by clicking on up or down arrow buttons. As of today, only Chrome 13 and Safari 5 support this feature.

<!DOCTYPE html>
<html>
<head>     
    <title>Testing HTML 5 Number Input Type</title>
</head>
<body>
   <form>
        <label for="date">
            Please enter date:
            <input type="number" name="date" id="date"
                min="1" max="31" step="1" value="15">              
        </label>
    </form>
</body>
</html

Friday, September 2, 2011

Method Overloading in ASMX and WCF services

Both ASMX and WCF services do not support method overloading by default. However, it is possible to enable method overloading with ASMX or WCF service by decorating a ASMX web method or a WCF method as follows.

In ASMX:

[WebMethod (MessageName="HelloWorld")]
public string HelloWorld()
{
return "HelloWorld";
}

[WebMethod (MessageName="HelloWorldWithName")]
public string HelloWorld(string name)
{
return "HelloWorld " + name;
}

In WCF:

[ServiceContract]
public interface IMyCalculator
{
[OperationContract(Name="AddFloats")]
float Add(float operand1, float operand2);

[OperationContract(Name="AddIntegers")]
int Add(int operand1,int operand2);
}

Thursday, September 1, 2011

Silverlight 5 Release Candidate is available to download.

Microsoft has published (8/31/2011) Silverlight 5 Release Candidate and available to download from the following link.
http://www.microsoft.com/download/en/details.aspx?displaylang=en&id=27220

Tuesday, August 30, 2011

HTML 5 support in Visual Studio 2010

HTML 5 support in Visual Studio 2010 was something development community was asking for a long time. Web Standards Update for Microsoft Visual Studio 2010 SP1 adds support to Visual Studio and the editor for HTML5 and CSS3 and provides intellisense and validation according to W3C specification.
http://visualstudiogallery.msdn.microsoft.com/a15c3ce9-f58f-42b7-8668-53f6cdc2cd83

Tuesday, August 23, 2011

How to enable WCF Tracing?

Tracing is not enabled by default. Trace source should be defined in the assembly level. The System.ServiceModel and System.ServiceModel.MessageLogging are the most important and frequently used WCF trace sources.

For each trace source trace listener should be defined. You can configure tracing by editing the web.config for web-hosted applications, or Appname.exe.config for self-hosted applications.

<configuration>
<system.diagnostics>
   <sources>
    <source name="System.ServiceModel" switchValue="Information, ActivityTracing" propagateActivity="true">
    <listeners>
   <add name="traceListener"
type="System.Diagnostics.XmlWriterTraceListener"
initializeData= "c:\log\Traces.svclog" />
    </listeners>
   </source>
</sources>
</system.diagnostics>
</configuration>

You can also configure each trace source to use the same shared listener, as shown below.

<configuration>
<system.diagnostics>
   <sources>
    <source name="System.ServiceModel"
switchValue="Information, ActivityTracing"
propagateActivity="true">
     <listeners>
      <add name="xml" />
       </listeners>
        </source>
         <source name="CardSpace">
       <listeners>
     <add name="xml" />
   </listeners>
</source>
<source name="System.IO.Log">
<listeners>
   <add name="xml" />
     </listeners>
      </source>
       <source name="System.Runtime.Serialization">
     <listeners>
    <add name="xml" />
</listeners>
   </source>
      <source name="System.IdentityModel">
       <listeners>
          <add name="xml" />
       </listeners>
   </source>
</sources>

<sharedListeners>
<add name="xml"
type="System.Diagnostics.XmlWriterTraceListener"
initializeData="c:\log\Traces.svclog" />
</sharedListeners>
</system.diagnostics>
</configuration>

Friday, October 15, 2010

How to find ASP.NET temporary files location?

ASP.NET provides the HttpRuntime.CodeGenDir property which gets the physical path to the directory where ASP.NET stores temporary files (generated sources, compiled assemblies, and so on) for the current application.

protected void Page_Load(object sender, EventArgs e)
{
Response.Write(HttpRuntime.CodegenDir);
}

Thursday, September 2, 2010

Overview of ASP.NET AJAX

ASP.NET AJAX is a free platform-independent scripting framework for quickly creating efficient and interactive Web applications that works across all popular browsers. AJAX enhances the user interactivity by providing asynchronous postback functionality which enables partial-page updates and fewer page refreshes.
ASP.NET does provide many tools that make building AJAXenabled webpages easier. ASP.NET ships with a set of AJAX server controls that can be embedded in your webpages to enable partial-page updates, communicate with a server process to indicate progress, and periodically update portions of a page.

■ The ScriptManager control is required on all pages that work with the AJAX Extensions for ASP.NET. It manages the JavaScript files sent to the client and the communication between the server and the client.
■ The ScriptManagerProxy control is used on pages that work with a master page that already defines a ScriptManager control or with user controls that will be used on pages that include a ScriptManager control.
■ The UpdatePanel control allows you to define an area within your page that can post back to the server and receive updates independent of the rest of the page.
■ The UpdateProgress control is used to provide notice to the user that the page has initiated a callback to the server.
■ The Timer control is used to periodically send a partial-page request (by using an UpdatePanel control) to the server at timed intervals.

Partial page updates - The ability to do a partial or incremental page updates without doing a full postback to the server, with no code changes and minimal markup changes. This ensures that the user stays within his or her current context. It also gives users the feeling that they are interacting with the application and not a server.

Client-side processing - This interactivity provides immediate feedback and responsiveness to users. With client script, you can enable functionality such as collapsible areas of a page, tabs on a webpage, data sorting on the client, and much more.

Progress indication - Track the progress of a server-side process and continuously update the user. This gives users the feeling that they are in control and assures them that the application is still processing.