Validate a TextBox for Varchar DataType ?

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I have a TextBox input field ,some times when user submit the data i found error from sql side except that maximum lenght error.So please provide how we validate that textBox that only prevent that thing that may generate the error from SQL Server side.

Posted 16-May-13 19:08pm

Atul Kumar Singh From Pune

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Thanks7872 17-May-13 1:13am

Problem is not with textbox its with datatype in database.Make sure you have all the datatypes that can store the data you provide,and the other thing is that you can make textbox such that it only accepts specified values or values with specified length.

sri senthil kumar 17-May-13 1:16am

what sort of input characters you gave and tested? because for varchar it should accept any character type. Sometimes error may happen when you give quoted value in that case you have to add a escape character or encode them before taking them to the DB.

2 solutions

Solution 2

As I think,
use Varchar(MAX) data type and use SET QUOTED_IDENTIFIER ON in SQL SERVER

Posted 17-May-13 1:41am

farogh haider

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Atul Kumar Singh From Pune · Accepted Answer · 2013-05-16T19:14:00

Solution 1

I think you provide to type validation :-
(1)Max Length validation.
(2)Prevent the use of single upper quote(i.e. ') because this confused the SQL to different String.Try to use INSERT INTO text VALUES('/'/'')

Posted 16-May-13 19:14pm

Atul Kumar Singh From Pune