Updating table in db does not work through vb.net

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I am trying to update a record in table..
When I try to update in access database through query it works fine but does not updates through vb.net.
Here is the code i wrote:
sql = Update VILLAGEMST set VCODE = 2 where TADDRESS like '*txtVilName.Text*' &
MainCon.Execute(sql)
MsgBox(Updated.)

Posted 11-Nov-12 18:56pm

Rachna0309

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Divya RS 12-Nov-12 1:59am

use a try and catch blocks so that u can find exceptions if any , also go with breakpoint, u cant solve ur issue unless u know where the exact problem is....

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Dave Kreskowiak · Answer 1 · 2012-11-12T04:43:00

sql = Update VILLAGEMST set VCODE = 2 where TADDRESS like '*txtVilName.Text*' &

This code is meaningless. You're treating the txtVilName.Text as if it were automatically replaced in strings where it is mentioned. It doesn't work that way.

I highly suggest you pickup a beginners book on VB.NET and work through it. Your making a very basic mistake because you don't undertand simple string manipulations.

Change it to this:

sql = Update VILLAGEMST set VCODE = 2 where TADDRESS like '%' & txtVilName.Text & "'"

Also, this is horribly bad SQL as you're leaving yourself open to SQL Injection attacks. I suggest Googling for "SQL Injection Attacks" and "VB.NET SQL Parameterized queries" to read up on what that is and what to do about it.