protected void btn_login(){ string sql_query = "select count(*) from login_info where user_name = '"+ txt_user_name.Text +"'"; sqlconnection con = new sqlconnection("your connection string"); sqlcommand cmd = new sqlcommand(con); cmd.commandtext = sql_query; object count = cmd.executescaler(); count = convert.toint32(count); //store user name into Session for Logout purpose Session["user_name"] = txt_user_name.Text; if(count>0) //means user exists in database { //Then insert Log-in entry for user sql_query = "insert into login_info_history(user_name,login_time) values('"+ txt_user_name.Text +"',getdate())"; cmd = new sqlcommand(con); cmd.commandtext = sql_query; cmd.executenonquery(); }}
protected void btn_logout(){ string sql_query = "insert into login_info_history(user_name,log_out_time) values('"+ Session["user_name"] +"',getdate())"; cmd = new sqlcommand(con); cmd.commandtext = sql_query; cmd.executenonquery();}
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