Click here to Skip to main content
15,905,136 members
Please Sign up or sign in to vote.
0.00/5 (No votes)
See more:
I created some text boxes to take in put.That data I am using for some reports heading. But I am getting problem when I am trying to enter baker's like word with that special character. How can I overcome with that.

What I have tried:

I googled but unable to find suitable solution.
Updated 25-Aug-17 5:48am
Patrice T 25-Aug-17 11:49am    
Do you have code ?
BillWoodruff 25-Aug-17 13:19pm    
What are you using to create "reports" ?
vijay_bale 26-Aug-17 1:44am    
crystal reports

1 solution

Simple: Never concatenate strings to build a SQL command. It leaves you wide open to accidental or deliberate SQL Injection attack which can destroy your entire database. Use Parametrized queries instead.

When you concatenate strings, you cause problems because SQL receives commands like:
SELECT * FROM MyTable WHERE StreetAddress = 'Baker's Wood'
The quote the user added terminates the string as far as SQL is concerned and you get problems. But it could be worse. IF I come along and type this instead: "x';DROP TABLE MyTable;--" Then SQL receives a very different command:
SELECT * FROM MyTable WHERE StreetAddress = 'x';DROP TABLE MyTable;--'
Which SQL sees as three separate commands:
SELECT * FROM MyTable WHERE StreetAddress = 'x';
A perfectly valid SELECT
A perfectly valid"delete the table" command
And everything else is a comment.
So it does: selects any matching rows, deletes the table from the DB, and ignores anything else.

So ALWAYS use parameterised queries! Or be prepared to restore your DB from backup frequently. You do take backups regularly, don;t you?
Share this answer

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

CodeProject, 20 Bay Street, 11th Floor Toronto, Ontario, Canada M5J 2N8 +1 (416) 849-8900