mysql - mysqlvb query for beginners -

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i using vb.net 2010 , mysql. insert working got problem in update. 

con.open()  dim cmd new odbc.odbccommand("update date1 set event_title='" + txteventtitle.text + "',description='" + rchdescription.text + "',calender='" + datetimepicker1.value.date() + "')", con)  cmd.executenonquery()  con.close()

this query doesn't update record table. m beginner need step step procedure update query. not using datagrid display records.

please me. thank you.

remove closing paren + "')" in query.


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