Question

有谁知道如何在ASP.NET（VB.NET）中编写以下PHP？

foreach ($_GET['listItem'] as $position => $item) : 
  $sql[] = "UPDATE `table` SET `position` = $position WHERE `id` = $item"; 
endforeach;

$ _GET ['listItem']中的数据如下所示：

项[] = 1＆安培;项[] = 2及项[] = 3

Answer 1

我知道一点PHP，但我假设$ position是一个从零开始的索引。如果不是，那么你将交换声明位置变量的两行代码。评论以'character。

开头

'Request.Params accesses parameters from form posts, query string, etc.
Dim pairs = Request.Params("listItem").Split("&")

For i As Integer = 0 To pairs.Length - 1

  Dim token = pairs(i)
  Dim position = i.ToString()
  'string position = (i + 1).ToString();
  Dim id = Convert.ToInt32(token.Split("=")(1))
  Dim sql = "UPDATE table SET position = " + position + " WHERE [id] = " + id.ToString()
  'This line does the same thing, a bit more eloquently and efficiently
  'Dim sql = String.Format("UPDATE table SET position = {0} WHERE [id] = {1}", position, id.ToString())

Next

我首先在C＃中这样做，因为我没有注意到你说过VB.net。所以这是C＃版本。以为我不妨留下它。我把它做了一点罗嗦，以展示C＃的一些细微差别和清晰度。

// Request.Params accesses parameters from form posts, query string, etc.
string[] pairs = Request.Params["listItem"].Split('&');
for (int i = 0; i < pairs.Length; i++)
{
  string token = pairs[i];
  string position = i.ToString();
  // string position = (i + 1).ToString();
  int id = Convert.ToInt32(token.Split('=')[1]);
  string sql = "UPDATE table SET position = " + position + " WHERE [id] = " + id;
  // This line does the same thing, a bit more eloquently and efficiently
  //string sql = String.Format("UPDATE table SET position = {0} WHERE [id] = {1}", position, id.ToString());
}

将PHP脚本转换为ASP.NET

1 个答案: