Programming C#: How to prevent duplicate data when insert to datagridview

Programming C#: How to prevent duplicate data when insert to datagridview
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#programming_for_everybody
Tags:
how to remove duplicate column values from gridview in c#
how to avoid duplicate records in gridview
how to prevent duplicate entries in sql using c#
prevent duplicate value to enter in database from textbox
DataGridView C#

[@nadyadni]

Its help a lot, thank you so much!

[@Antoniovieirafreitas]

error, if (txtIDProduto.Text == gdvItens.Rows[item].Cells[0].Value.ToString()) System.NullReferenceException: 'Referência de objeto não definida para uma instância de um objeto.'

[@teresatawfik8352]

very good, thanks

[@sittisakthongsri9355]

thank you so much

[@حساممجيبالبرطي]

Thanks 🌹

[@mohamedarsho2278]

when i writte this code some error in insert the insert isn't saved

[@البيروحاء]

sir how are you thank u very much please , How to prevent duplicate data when insert from datagridview c# to database sql server ? i wait you..

[@programmingforeverybody]

kzbin.info/www/bejne/f4Ssc5aifdqXb6c

[@NAMEL3SSS]

do you know how to do it in java swing?

[@ahuy96]

Thank you. How about checking duplicate when update.

[@programmingforeverybody]

This video for you my friend kzbin.info/www/bejne/pGjGo4ygq6ZmeJY

[@ahuy96]

@@programmingforeverybody thank you so much. Sorry for late reply, I didnt notice my noti

[@programmingforeverybody]

@@ahuy96 never mind my friend

[@sulevanG]

I need this in java