Problem: sqlCom.ExecuteNonQuery()

What can be reason for this message?

An unhandled exception of type 'System.Data.SqlClient.SqlException' occurred in system.data.dll

Additional information: System error.

There could be a lot of reasons for that message. You need to trap the error (either while debugging or with a custom error handling routine that displays errors) and look at it's inner message. This is thrown when there was some form of database error, i.e. a specified column doesn't exist, you tried to insert a duplicate primary key, etc.|||reading from sql database is working fine but when i try to save something it throws that exception|||

You still need to debug in order to narrow down the problem more effectively. Once you have the actual message (SqlException.Message), then we could give you direction. Or, you could post your code; the error message would be helpful, too, though.

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I solve the problem - mistakes in the database

thank you for your time

greetings.

Prole

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I solve the problem - mistakes in the database

thank you for your time

Prole