inserting textbox values into database

Question

im a newbie here and would like some advice on C# programming

i would like to store values from a textbox into a database. so far, i have the following:

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Answer 1

the first thing you want to do to find out what's going wrong is put

Console.WriteLine(thisQuery);

after the line StringthisQuery=

This will show you exactly what statement you're calling the Db with, and it may be clear just from looking at the output what's wrong with the statement.