错误 CS0019: 运算符“+”无法应用于“string”和“方法组”类型的操作数
String sql ="update blogs set Username='"+ oBean .getusername()+"',Title='"+oBean.gettitle()+"',Blogcontent='" + oBean.getblogcontent() + "',Id='" + oBean.getid() + "',Time='" + oBean.gettime + "',Classname='" + oBean.getclassname() + "',Clicksum='" + oBean.getclicksum() + "',Bloghide='" + oBean.getbloghide() + "',Blogverify='" + oBean.getblogverify() + "',Blogreply='" + oBean.getblogreply() + "'where Blogid='" + oBean.getblogid()+"'";