file附近有语法错误？？
Dim cmd As SqlCommand
  myconn = New SqlConnection("server=localhost;database=database;uid=sa;pwd=sa")
  Dim sqlstr As String = ""
  sqlstr = "insert into file(score) values('" + TextBox2.Text + " ')"
  myconn.Open()
  cmd = New SqlCommand(sqlstr, myconn)
  cmd.ExecuteNonQuery()
  cmd.Dispose()
  myconn.Close()
  sqlstr = ""
  Response.Write("<script>alert('添加成功！');location.href='teacher5.aspx';</script>")

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[file] 试试
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sql关键字加 []
sqlstr = "insert into [file](score) values('" + TextBox2.Text + " ')"
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SQL code

insert into [File](score) values('ss')

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SQL code
INSERT INTO [file]([score])VALUES('123')