输入中文的时候..错误提示 列名小龙无效
int num = 0;
  try
  {

  string sql = string.Format("select count(*) from login where name={0} and paw={1}", textBox1.Text.Trim(),textBox2.Text.Trim());
  SqlCommand com = new SqlCommand(sql, Dbhelp.con);
  Dbhelp.con.Open();
  num = Convert.ToInt32(com.ExecuteScalar());
  MessageBox.Show(sql);
  }
  catch (Exception ex)
  {
   
  Console.WriteLine(ex.Message);
  MessageBox.Show(ex.Message);
  }
  finally
  {
  Dbhelp.con.Close();
  }
  if(num==11)
  {
  MessageBox.Show("Fuck you");
  }
输入中文的时候..错误提示 列名小龙无效

------解决方案--------------------
缺引号
where name='{0}' and paw='{1}'