C# programming for keyword search from database ?

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Hellow I have a table with following columns.

Profile_ID,Name,Age,More_Info_about family,qualification details, job details and partner_preference

I have to search on keyword basis and keyword is to be taken from textbox.

The search result should be in such a way so that if keyword presents in starting, ending and in between the sentence of any of the columns presents in where conditions.

Please help me.

What I have tried:

I tried LIKE '" + txtbox_keyword.Text + "'
but is not working properly it is not searching data if keyword is present in between sentence.

"select (Profile_ID,Name,Age, More_info_about_family,Job_Business_Location_City,Salary from tblRegistration  WHERE 

More_info_about_family LIKE '" + txtbox_keyword.Text + "' OR Qualification_Details LIKE '" + txtbox_keyword.Text + "' OR 

origin LIKE '" + txtbox_keyword.Text + "' OR Job_Detail LIKE '" + txtbox_keyword.Text + "' ", con);

Posted 16-Jun-19 16:22pm

Member 14201433

Updated 16-Jun-19 17:10pm

PIEBALDconsult

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PIEBALDconsult · Answer 1 · 2019-06-16T16:34:00

First off -- using string concatenation to form SQL statements is a VERY BAD IDEA.

Next, when using LIKE you will likely want to include some wildcards, such as %, which matches multiple characters.
Without wildcards, you are simply trying to match the entire string.
You may not want to expect the user to have specified them.

So please look into using parameters (which is really easy) and ensure that you use wildcards.

Patrice T · Answer 2 · 2019-06-16T17:10:00

Quote:
LIKE '" + txtbox_keyword.Text + "'

The way you use LIKE is for column is exact value.
SQL LIKE Operator[^]

VB

"select (Profile_ID,Name,Age, More_info_about_family,Job_Business_Location_City,Salary from tblRegistration  WHERE More_info_about_family LIKE '" + txtbox_keyword.Text + "' OR Qualification_Details LIKE '" + txtbox_keyword.Text + "' OR origin LIKE '" + txtbox_keyword.Text + "' OR Job_Detail LIKE '" + txtbox_keyword.Text + "' "

Not a solution to your question, but another problem you have.
Never build an SQL query by concatenating strings. Sooner or later, you will do it with user inputs, and this opens door to a vulnerability named "SQL injection", it is dangerous for your database and error prone.
A single quote in a name and your program crash. If a user input a name like "Brian O'Conner" can crash your app, it is an SQL injection vulnerability, and the crash is the least of the problems, a malicious user input and it is promoted to SQL commands with all credentials.
SQL injection - Wikipedia[^]
SQL Injection[^]
SQL Injection Attacks by Example[^]
PHP: SQL Injection - Manual[^]
SQL Injection Prevention Cheat Sheet - OWASP[^]
How can I explain SQL injection without technical jargon? - Information Security Stack Exchange[^]

C# programming for keyword search from database ?

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