sql - `Must declar Scalar variable at...` Can someone explain exactly what this is? -



sql - `Must declar Scalar variable at...` Can someone explain exactly what this is? -

can help me declaring scalar variable? don't understand scalar variable declaration.

below code causing exception.

int customer_id; int.tryparse(customer_idtextbox1.text, out customer_id); string sql = @"update client set customer_name = @customer_name customer_id = @customer_id"; sqlcommand sqlcommand = new sqlcommand(sql, sqlconnection); sqlcommand.parameters.addwithvalue("@customer_name", customer_name); sqlconnection.open(); sqlcommand.executenonquery();

you have @customer_name variable declared parameter. add together line

sqlcommand.parameters.addwithvalue("@customer_id", customer_id);

under current addwithvalue line.

sql

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