Question

此UPDATE查询不会更新任何值也不会产生任何错误...该查询中的问题是什么？

Protected Sub Button1_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles Button1.Click
   Try
      Using conn = New SqlConnection(constr)
      Using cmd = conn.CreateCommand()
         conn.Open()
         Dim sql As String = "UPDATE hotels SET city =@city, hotel =@hotel, location =@location, price =@price, category =@category, short =@short, details =@details WHERE hotelid =@hotelid"
         cmd.CommandText = sql
         cmd.Parameters.AddWithValue("@city", TextBox1.Text)
         cmd.Parameters.AddWithValue("@hotel", TextBox2.Text)
         cmd.Parameters.AddWithValue("@location", TextBox3.Text)
         cmd.Parameters.AddWithValue("@price", TextBox4.Text)
         cmd.Parameters.AddWithValue("@category", Rating1.CurrentRating)
         cmd.Parameters.AddWithValue("@short", TextBox6.Text)
         cmd.Parameters.AddWithValue("@details", Editor1.Content)
         cmd.Parameters.AddWithValue("@hotelid", Request.QueryString("hotelid"))
         cmd.ExecuteNonQuery()
      End Using
      End Using
   Catch ex As Exception
      Response.Write(ex.Message)
   End Try

提取的查询：

UPDATE hotels 
SET city = @city, hotel = @hotel, 
    location = @location, price = @price,   
    category = @category, short = @short, details = @details 
WHERE hotelid = @hotelid

Answer 1

SQL没有明显的错误，你说你没有收到任何错误，所以我猜你的Request.QueryString（“hotelid”）实际上并没有返回null（这意味着你的UPDATe不会更新任何内容）。 Request.QueryString（“hotelid”）的值是多少。计数？

这个更新查询有什么问题？

1 个答案: