JQuery Tips and Tricks #1–Simple Addition using JQuery

                                In this post we are going to see a simple addition of 2 numbers using JQuery. Copy and paste the below code:

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ASP.Net Forums – FAQ #1 : How to enable Adsense in my site?

                        

This is the most frequently asked question in ASP.Net Forums. As a Adsense user (struggled with google over 6 months I got my adsense approval), I’m going to explain how to enable adsense in your website regardless of technology (either you used ASP.Net or PHP or Java etc) which you are using to built your site.

I just want to tell one thing first there is no short cut to get your adsense approval from google. Go with the below guidelines:

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Daily Interview Question #7: Implicit and Explicit Implementation of Interface

                                                   This is the most common interview question for experienced professionals.

Normally an interface can be implemented in a class in a normal way which is a implicit implementation. Sometime, we may have same method name in different interfaces. If this is the case, we need to do explicit implementation of the interface method. The main use of explicit implementation is to avoid the ambiguities between the class or method name. In order,  to do that the interface name put before that interface’s method.

 

Below example, shows the implicit and explicit implementation:

 

namespace ConsoleApplicationC
{
    // 2 interfaces with same method name
    interface IintegerAdd
    {
        void Add();
    }
    interface IfloatAdd
    {
        void Add();
        void Multiply();
    }
    // We implement Both interfaces
    class ArithmeticOperation : IintegerAdd, IfloatAdd
    {
        // Implicit  Implementation : There is no name collision so we can implement implicitly
        // NOTE : public modifier MUST here
        public void Multiply()
        {
            float a = 1.5f, b = 2.5f;
            Console.WriteLine("Float Multiplication is:" + a * b);
        }
        // Explicit Implementation :  Explicitly tell the compiler that we implement the interface IintegerAdd
        void IintegerAdd.Add()
        {
            int a = 10, b = 20;
            Console.WriteLine("Integer Addition Is:" + (a + b));
        }
        // Explicit Implementation :  Explicitly tell the compiler that we implement the interface IfloatAdd
        void IfloatAdd.Add()
        {
            float a = 1.5f, b = 2.5f;
            Console.WriteLine("Float Addition Is:" + (a + b));
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            ArithmeticOperation objA = new ArithmeticOperation();
            IintegerAdd iobj = (IintegerAdd)objA;
            iobj.Add();
            IfloatAdd fobj = (IfloatAdd)objA;
            fobj.Add();
            Console.ReadKey();
        }
    }
}

Output :

 

Integer Addition Is:30
Float Addition Is:4

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Visual Studio Tips & Tricks - 8: Breakpoint will not currently be hit. No symbols have been loaded for this project.

Most of the developers who are using Visual studio have encountered the above problem. As a ASP.Net Developer I have this atleast once a day. So the below are my tricks to get ride of this issue.

 

1) Just Close the VS IDE.

2) Go to Task Manager and kill the worker process. (If you are working on  ASP.Net application).

3) Go to the .Net installation folder ( Normally it should be C:\Windows\Microsoft.NET\Framework\v4.0.30319\Temporary ASP.NET Files OR C:\Windows\Microsoft.NET\Framework64\v4.0.30319\Temporary ASP.NET Files) and clear the temp files from the temporary folder.

4) Open the solution and "Rebuild" entire solution. Now try to attach the debugger.

 

Please note that, in some machines you may have 2 framework installation, one for 32-bit and another for 64-bit. So when you go with step 3, pay close attention and make sure which .net framework was used and also which version no (either 2,3,3.5 or 4) was used by your application.

 

Hope this helps!

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Using MSCaptcha

                                    Recently, in one of my project I need a captcha for my application. Just a google search provides number of options. I need a open source solution, so I go with krisanov’s solution. I just download and try to using that on my project. However it doesn’t works fine. Just follow the instruction mention by mudasar in this url. But I have encountered several problems (that is it doesn’t display any captcha image) the when I added that into my project, which leads to write this post.

Below are the steps that I have followed:

 

1) Just download the captcha from the url.

2) Add the reference into the project by “Right Click on the Project –> Add Reference”.

3) After that you need to include the below lines into web.config file:

 

<system.web>
    <httpHandlers>
        <add verb="GET" path="CaptchaImage.aspx" type="WebControlCaptcha.CaptchaImageHandler, WebControlCaptcha"/>
    </httpHandlers>
</system.web>
<location path="CaptchaImage.aspx">
    <system.web>
        <authorization>
            <allow users="*"/>
        </authorization>
    </system.web>
</location>
  

What previously done, I have missed out entire “location” element, which is also not mentioned in the mudasar’s tutorial. I have found this solution in this asp.net forum thread.

Hope this helps to someone!

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