Look at the error messages - they are pretty explicit.
The first one is obvious:
"Table 'Filelib' does not have the identity property"
So look at your UPDATE command and if you have a column called "Identity" then surround it with square brackets: "[Identity]"
Second, do note that an UPDATE query with no WHERE clause will affect every single row in the whole table...
The seconds one is harder:
"Incorrect syntax near '='"
Almost certainly it means you need to use a parameterised query instead of string concatenation: never concatenate strings to build a SQL command. It leaves you wide open to accidental or deliberate SQL Injection attack which can destroy your entire database. Use Parametrized queries instead.
And in future, don't post rubbish screenshots - copy and paste the code and error message here instead. Screenshots of your errors are lazy and unhelpful because they cut off half the necessary information!
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