Programming VB.net: How to insert ,update and delete in datagridview using one button with database

Programming VB.net: How to insert ,update and delete in datagridview using one button with database.
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Tags:
update and insert data in database from datagridview
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insert update delete view and search data from database in vb net
update data in database from datagridview vb net
how to save data from datagridview to database in vb net

[robbymuksin]

I've followed your directions in the video without any difference, and I found an error. can you help me?


HResult=0x80004003
Message=Object reference not set to an instance of an object.
Source=<Cannot evaluate the exception source>
StackTrace:
<Cannot evaluate the exception stack trace>

[robertalooondu]

And how do i create a backup using local sql database. I'm having trouble with that