如何使用Linq搜索结构数组？ [英] How to use Linq in searching an array of structures?

问题描述

我有一个Worksheetlayouts数组。每个WorkSheetlayout都有两个Rect，名为hintlocation和listlocation。我需要获得任何一个Rect包含一个Point的左侧和右侧，p。该点只会在其中一个工作表布局的一个矩形中。



我使用以下代码进行两次测试。它可以组合成一个Linq语句吗？

I have an array of Worksheetlayouts. Each WorkSheetlayout has two Rect, named hintlocation and listlocation. I need to obtain the Left and Right side of whichever Rect contains a Point, p. The point will only be in one Rect of one of the worksheetlayouts.

I am using the following code which tests twice. Can it be combined into one Linq statement?

WorksheetLayout[] layout = worksheetlayouts
       .Where( (value, index) => worksheetlayouts[index].hintlocation.Contains(p) || worksheetlayouts[index].listlocation.Contains(p))
       .ToArray();

  double left;
  double right;
  if (layout[0].hintlocation.Contains(p))
  {
      left = layout[0].hintlocation.Left;
      right = layout[0].hintlocation.Right;
  }
  else
  {
      left = layout[0].listlocation.Left;
      right = layout[0].listlocation.Right;
  }

感谢您的任何建议。

Thank you for any suggestions.

推荐答案

//with linq
var layout = from w in worksheetlayouts
             where w.hintlocation.Contains(p) || w.listlocation.Contains(p)
             select w;

//withou linq
WorksheetLayout layout = worksheetlayouts
       .Where( (value, index) => worksheetlayouts[index].hintlocation.Contains(p) || worksheetlayouts[index].listlocation.Contains(p))
       .FirstOrDefault();

if(layout != null){
left = layout.hintlocation.Left;
right = layout[0].hintlocation.Right;
}

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