about the search engine

A search engine is simply a program that looks in the content and provides you with a result, whether two records match or not. Simple to

if(message == "Hello world") {
    // Yes, this is a match
}  else {
    // Not found
} 

But, with a little complex functionality, so that it can find the words in the documents. Search engines are usually written with very strong code-base that allows them to search the documents, web pages, resources and devices. This enables them to provide you with the answer that you seek. Google, Bing etc they all have a great team that writes the code for the search engine.

 

You will have to start by a simple database search to understand how that works, I have written an article for that, you can read it on C# Corner, http://www.c-sharpcorner.com/UploadFile/201fc1/search-for-related-query-inside-the-database-using-Asp-Net/ 

 

The above article will give you an overview of what you may do and what you may not do.