asp.net 在gridview中显示上传数据时 报错：cmd.ExecuteNonQuery()用户代码未处理。。。
Dim fileName As String = System.IO.Path.GetFileName(FileUpload1.FileName)
  Dim filesize As Integer = FileUpload1.FileBytes.Length
  Dim filetime As Date = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss")
  Dim username As String = "label1.text"
  Dim cmd As SqlCommand
  myconn = New SqlConnection("server=localhost;database=database;uid=sa;pwd=sa")
  myconn.Open()
  Dim sqlstr As String = "insert into file (filename,filesize,filetime,username) VALUES (@filename,@filesize,@filetime,@username)"
  cmd = New SqlCommand(sqlstr, myconn)
  cmd.Parameters.AddWithValue("@filename", fileName)
  cmd.Parameters.AddWithValue("@filesize", filesize)
  cmd.Parameters.AddWithValue("@filetime", filetime)
  cmd.Parameters.AddWithValue("@username", username)
  cmd.ExecuteNonQuery()
  cmd = New SqlCommand("select * from file order by filetime", myconn)
  Dim dr As System.Data.SqlClient.SqlDataReader = cmd.ExecuteReader(System.Data.CommandBehavior.CloseConnection)
  GridView1.DataSource = dr
  GridView1.DataBind()
  myconn.Close()

------解决方案--------------------
你改成
Dim sqlstr As String = "insert into [file] ([filename],[filesize],[filetime],[username]) VALUES (@filename,@filesize,@filetime,@username)"

试试