how to check value before insertion

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I have two tables in SQL server

1:customer(id,name,salary,CNIC)values(1,'john',$10000,12312)
2:And second table is advance_income(id,date,adv_income)values(1,12sep2015,$500)
And i have two textbox in asp.net c#

CNIC<textbox>
Salary<textbox>

here now i want to when i enter the CNIC number And salary income that is stored to those person who have equal the salary of textbox and in SQL
anybody can help me please to do this.......

Posted 30-Sep-15 11:36am

Member 11963532

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barneyman 1-Oct-15 0:32am

please edit/rephrase the question - your first version is not exactly clear

Krunal Rohit 1-Oct-15 0:35am

Please edit it. Elaborate it.

-KR

CHill60 1-Oct-15 7:17am

Please use the Improve question link to edit your question to make it clearer what you are trying to do.
Even better, include the sql query that you have tried yourself - it might give us a clue!

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aarif moh shaikh · Accepted Answer · 2015-09-30T18:33:00

Solution 1

First of all you have to retrieve data from sql server that is:

SQL

Select id from customer where cnic='" + YourCNICTextBoxId.Text + "'

after that you can update salary of output id's.

Regards,
AARIF SHAIKH

Posted 30-Sep-15 18:33pm

aarif moh shaikh

Comments

Member 11963532 1-Oct-15 5:24am

its can't be update because from which field i am comparing the value is already competed field

CHill60 1-Oct-15 7:16am

This is vulnerable to SQL Injection[^] attacks and doesn't actually answer the OPs question