group by辞書でクラスキー、値オブジェクトlinqを使用

Question

私は辞書でグループを行う必要があり、キー、値を持つ別の辞書にグループに基づいて結果の行を取得する必要がありますペア、値はリスト（位置）です。私はリスト（ポジション）として値1、値と値オブジェクトを持つキーオブジェクトを持つ別の辞書を持っているしたいと思う結果で

public class Positions 
{ 
    public string Value1 { get; set; } 
    public int Value2 { get; set; } 
    public string Value3 { get; set; } 
    public string Value4 { get; set; } 
    public string Value5 { get; set; } 
    public string Value6 { get; set; } 
    public string Value7 { get; set; } 
    public string Value8 { get; set; } 
    public string Value9 { get; set; } 
    public string Value10 { get; set; } 
    public string Value11 { get; set; } 
    public string Value12 { get; set; } 
} 

public struct PositionKey 
{ 
    public string Value1 { get; set; } 
    public int Value2 { get; set; } 
    public string Value3 { get; set; } 
    public string Value4 { get; set; } 
    public string Value5 { get; set; } 
    public string Value6 { get; set; } 

    public override int GetHashCode() 
    { 
     return (Value1 != null ? Value1.GetHashCode() : 1) 
      ^(Value2 > 0 ? Value2.GetHashCode() : 1) 
      ^(Value3 != null ? Value3.GetHashCode() : 1) 
      ^(Value4 != null ? Value4.GetHashCode() : 1) 
      ^(Value5 != null ? Value5.GetHashCode() : 1) 
      ^(Value6 != null ? Value6.GetHashCode() : 1); 
    } 

    public override bool Equals(object obj) 
    { 
     PositionKey compositeKey = (PositionKey)obj; 
     return Value1 == compositeKey.Value1 
       && Value2 == compositeKey.Value2 
       && Value3 == compositeKey.Value3 
       && Value4 == compositeKey.Value4 
       && Value5 == compositeKey.Value5 
       && Value6 == compositeKey.Value6; 
    } 
} 


public struct GroupbyPositionKey 
{ 
    public string Value1 { get; set; } 
    public int Value2 { get; set; } 
    public override int GetHashCode() 
    { 
     return (Value1 != null ? Value1.GetHashCode() : 1) 
      ^(Value2 > 0 ? Value2.GetHashCode() : 1); 
    } 

    public override bool Equals(object obj) 
    { 
     PositionKey compositeKey = (PositionKey)obj; 
     return Value1 == compositeKey.Value1 
       && Value2 == compositeKey.Value2; 
    } 
} 

public class program 
{ 
    /*   
     Value1 Value2 Value3 Value4 Value5 Value6 Value7 Value8 Value9 Value10 Value11 Value12 
     ------------------------------------------------------------------------------------------------- 
     v1  1  val1 val2 val3 val4 val5 val6 val7 val8  val9  val10 
     v1  1  val2 val3 val4 val5 val6 val7 val8 val9  val10  val11 
     v3  4  val3 val4 val5 val6 val7 val8 val9 val10 val11  val12 
     v3  4  val4 val5 val6 val7 val8 val9 val10 val11 val12  val13 
     v3  5  val5 val6 val7 val8 val9 val10 val11 val12 val13  val14 
     v4  6  val6 val7 val8 val9 val10 val11 val12 val13 val14  val15 
     v4  6  val7 val8 val9 val10 val11 val12 val13 val14 val15  val16 
     v4  7  val8 val9 val10 val11 val12 val13 val14 val15 val16  val17 
     v4  7  val9 val10 val11 val12 val13 val14 val15 val16 val17  val18 


     Group by - Value1 Value2 Value3 Value4 Value5 Value6 Value7 Value8 Value9 Value10 Value11 Value12 
     Get List of the rows after the grouping on the basis of group by Value1,Value2 
    */ 
    public static void main() 
    { 
     Dictionary<PositionKey, Positions> dictPositons = new Dictionary<PositionKey, Positions>(); 

     Positions obj = new Positions(); 
     obj.Value1 = "v1"; 
     obj.Value2 = 1; 
     obj.Value3 = "val1"; 
     obj.Value4 = "val2"; 
     obj.Value5 = "val3"; 
     obj.Value6 = "val4"; 
     obj.Value7 = "val5"; 
     // ........ and so on.. and so forth...for all the objects. 

     /* 
      I have a datatable as above and i am inserting the rows in the collection object of class <Positions> with respective key 
      and add the same to the dictionary. 
     */ 

     PositionKey key = new PositionKey(); 
     key.Value1 = "v1"; 
     key.Value2 = 1; 
     key.Value3 = "val3"; 
     key.Value4 = "val4"; 
     key.Value5 = "val5"; 
     key.Value6 = "val6"; 

     if (!dictPositons.ContainsKey(key)) 
     { 
      dictPositons.Add(key, obj); // this dictionary would have the raw data which would have all the rows from the table as a dictionary collection 
     } 


     /* 
     Now I have to create another dictionary which gives me a list of all the records by grouping on the basis 
     of the key <GroupbyPositionKey> which is nothing but <Value1,Value2> 

     The resulting dictionary should look like Dictionary<GroupbyPositionKey,List<Positions>> 
     */ 
     Dictionary<GroupbyPositionKey, List<Positions>> result = new Dictionary<GroupbyPositionKey, List<Positions>>(); 
     result = dictPositions.GroupBy(....); // not sure how ? 
    } 
} 

：

は、ここに私の問題文を説明し、以下のコードスニペットです。私は希望の結果を得るために辞書でグループに近づく方法をよく分かりません。

私はすでに辞書を手作業でループし、新しいキーに基づいて他の辞書を選択して挿入することで、この結果を達成しました。しかし、これを行うLINQの方法があるかどうかを知りたかったので、はるかに短くなります。

Answer 1

あなたGroupBy声明の中で、あなたはそれを指摘して私の悪い、おかげで新しいGroupbyPositionKeyクラスを作成し、あなたの鍵とリスト

Dictionary<GroupbyPositionKey, List<Positions>> result = dictPositons 
     .GroupBy(x => new GroupbyPositionKey { Value1 = x.Key.Value1, Value2 = x.Key.Value2 }) 
     .ToDictionary(x => x.Key, x => x.Select(y => y.Value).ToList());