求救!!这个INSERT语句哪儿错了!
string sql = " INSERT INTO HouseSourceInfo(ID,Hname,Hstate,Harea,HdanPrice,HfullPrice,Hcheckstate,Hfloor) VALUES ('"+this.textBox1.Text+"','"+this.textBox2.Text+"','"+this.textBox3.Text+"','"+this.textBox3.Text+"','"+this.textBox4.Text+"','"+this.textBox5.Text+"','"+this.textBox6.Text+"','"+this.textBox7.Text+"','"+this.textBox8.Text+"')";
SqlCommand myCommand = new SqlCommand(sql,conn);
myCommand.ExecuteNonQuery();