【Aras二次开发】查询和迭代查找item集

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There is no difference in setting up a query for a single Item or for many.  Only the
criteria define the set size returned.  In this recipe you create an Item and populate
the query criteria, apply it, and iterating over the Items returned producing a HTML
<TABLE>  fragment.
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JavaScript  
+ K! j) v2 y6 y- B& Zvar qryItem = this.newItem("Part","get");
* {, J3 V2 N6 v/ ~0 SqryItem.setAttribute("select","item_number,description,cost");
qryItem.setProperty("cost", "100", "gt");
! g7 C4 Y: x. J# o) Q6 qvar results = qryItem.apply();
var count = results.getItemCount();
var content = "<table>";
' f3 F6 C# s* j; O) ~) l* G! d4 P9 }  kfor (var i=0; i<count; ++i)
{
  var item = results.getItemByIndex(i);
  content += "" +
+ c' X" R% E4 p. `/ V    "<tr>" +
      "<td>" + item.getProperty("item_number") + "</td>" +
      "<td>" + item.getProperty("description") + "</td>" +
      "<td>" + item.getProperty("cost") + "</td>" +
    "</tr>";
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content += "</table>";
return content;
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C#  
Item qryItem = this.newItem("Part","get");
qryItem.setAttribute("select","item_number,description,cost");
5 K% |' q8 A5 M3 d, T6 y" T0 V# TqryItem.setProperty("cost", "100", "gt");
Item results = qryItem.apply();
+ `3 q: E/ f+ B5 rint count = results.getItemCount();
+ H1 e7 s4 `7 d; S7 n' g: zint i;
# a! e( L, b7 ^" ^7 Dstring content = "<table>";
/ _9 c) l' n) D3 T. R- A5 O, K8 ?0 E% `for (i=0; i<count; ++i)
{
  Item item = results.getItemByIndex(i);
. P7 E" T6 d& g. o7 @. f) P" p9 p( \  content += "" +
    "<tr>" +
      "<td>" + item.getProperty("item_number") + "</td>" +
; ?: j/ }, f) H, _      "<td>" + item.getProperty("description") + "</td>" +
0 X4 u& V3 f% m  {2 ~      "<td>" + item.getProperty("cost") + "</td>" +
    "</tr>";
3 L/ D: R3 b! g' q7 P, u}
content += "</table>";
# m% _4 ?0 d  v% a3 OInnovator innovator = this.newInnovator();
return innovator.newResult(content);

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0 [$ X  Y5 ^! h) i- K: kDim qryItem As Item = Me.NewItem("Part","get")
; P5 ]; k3 X5 j' N' aqryItem.SetAttribute("select","item_number,description,cost")
$ O) C; R$ B, V) N  IqryItem.SetProperty("cost", "100", "gt")
& V3 A  I$ J2 V3 ?7 |2 [7 YDim results As Item = qryItem.Apply()
Dim count As Integer = results.GetItemCount()
- m- y; j. b# ?  z9 oDim i As Integer
* v3 S+ p6 V) b# ]Dim content As String = "<table>"
For i=0 to count - 1
/ D- p7 y7 A$ n; ]' n  Dim item As Item = results.GetItemByIndex(i)
  content += "" + _
    "<tr>" + _
      "<td>" + item.GetProperty("item_number") + "</td>" + _
      "<td>" + item.GetProperty("description") + "</td>" + _
      "<td>" + item.GetProperty("cost") + "</td>" + _
    "</tr>"
Next
content += "</table>"
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$ K4 u+ Z2 D$ S. N( n5 r2 {Dim innovator As Innovator = Me.NewInnovator()
$ r# |& M/ W; }  }; a$ P2 R' b6 {% Dreturn innovator.NewResult(content)
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