comparing/validating gridview values among each other

vbcreep

New member
Joined
Jul 8, 2009
Messages
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Programming Experience
3-5
I have a gridview(editable).

It may have more than 1 row with columns startdate and enddate.

StartDate EndDate

4/4/09 6/6/09 (valid-existing row)

1/2/09 3/3/09 (valid-existing row)

7/7/09 9/9/09 (valid- edited row)

3/3/09 6/6/09 (Invalid - edited row )


When you see the above table/gridview, you will know what I want to validate.

I should be checking whether there is any row having start-end dates lying within the existing date range, if so I should invalidate them.

I shd have only distinct date range in my rows.

How do I do that.

May be Useful note: I will be able to check which column name I tried editing in that row.

Do any of you have some ideas how to create a logic to accomodate my validation issue in my webbased gridview control ?

thanks in advance
 

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