LINQ合併兩個分組查詢結果

Question

在我的域中我有一個名爲「Block」的對象。一個「塊」可以有「引腳」和「屬性」附加到它。

我可以創建兩個組這給我下面的結果：

組別是：

Block:B1 
    Pin:P1 
    Pin:P2 
Block:B2 
    Pin:P3 
    Pin:P4 

第2組是：

Block:B1 
    Attribute:Att1, Value: Value1 
    Attribute:Att2, Value: Value2 
Block:B2 
    Attribute:Att3, Value: Value3 
    Attribute:Att4, Value: Value4 

現在我想合併這兩個結果的東西像這樣：

結果組是：

Block:B1 
    Pin:P1 
    Pin:P2 
    Attribute:Att1, Value: Value1 
    Attribute:Att2, Value: Value2 
Block:B2 
    Pin:P3 
    Pin:P4 
    Attribute:Att3, Value: Value3 
    Attribute:Att4, Value: Value4 

LINQ可以嗎？或者，我是否需要未分組的結果以後創建分組結果？

感謝

編輯： 隨着Road242解決方案，我得到這樣的結果：

Pin: P1 
Pin: P2 
Attribute: Att1 
Attribute: Att2 
Pin: P3 
Pin: P4 
Attribute: Att3 
Attribute: Att4 

的引腳和屬性看起來不錯，但我失去了塊作爲分組鍵:-(

編輯： 我的查詢看起來是這樣的：

var blockPinsQuery = from blockPinRelation in blockPinRelations 
      join block in blocks 
       on blockPinRelation.BlockId equals block.Id 
      join pin in pins 
       on blockPinRelation.PinId equals pin.Id 
      group pin by block 
      into g 
      select new 
        { 
         Block = g.Key, 
         Pins = g 
        }; 

和

var blockAttributesQuery = from blockAttributeRelation in blockAttributeRelations 
          join block in blocks 
           on blockAttributeRelation.BlockId equals block.Id 
          join attribute in stringAttributes 
           on blockAttributeRelation.AttributeId equals attribute.Id 
            group attribute by block 
           into g 
           select new 
           { 
            Block = g.Key, 
            Attributes = g 
           }; 

，你可以看到有一個關係表中的相關實體之間。但我猜這不重要。

我的輸出過程是這樣的：

foreach (var group in blockPinsQuery) 
     { 
      Console.WriteLine("Block:" + group.Block.Name); 
      group.Pins.ToList().ForEach(x => Console.WriteLine("\t" + "Pin:" + x.Name)); 
     } 

和

foreach (var group in blockAttributesQuery) 
     { 
      Console.WriteLine("Block:" + group.Block.Name); 
      group.Attributes.ToList().ForEach(x => Console.WriteLine("\t" + "Attribute:" + x.Name + ", " + "Value: " + x.Value)); 
     } 

和Road242查詢：

foreach (var group in joinedResults) 
     { 
      group.Pins.ToList().ForEach(p => Console.WriteLine("Pin: " + p.Name)); 
      group.Attributes.ToList().ForEach(p => Console.WriteLine("Attribute: " + p.Name)); 
     } 

Answer 1

你可以使用LINQ連接語句：

看http://msdn.microsoft.com/en-us/library/bb311040.aspx

var joinedResults = 
    from g1 in Group1 
    join g2 in Group2 on g1.Block equals g2.Block 
    select new { Pin = g1.Pin, Attribute = g2.Attribute };