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GeneralRe: Automatically Compiler Generated Unique Constants ? Pin
Eddy Vluggen21-Nov-12 21:08
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GeneralRe: Automatically Compiler Generated Unique Constants ? Pin
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GeneralRe: Automatically Compiler Generated Unique Constants ? Pin
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GeneralRe: Automatically Compiler Generated Unique Constants ? Pin
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GeneralRe: Automatically Compiler Generated Unique Constants ? Pin
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GeneralRe: Automatically Compiler Generated Unique Constants ? Pin
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QuestionDataGridView doesn't appear on screen Pin
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GeneralRe: DataGridView doesn't appear on screen Pin
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QuestionTextbox help! Pin
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QuestionSpecialized List Sorting question Pin
NuclearMan8521-Nov-12 7:12
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AnswerRe: Specialized List Sorting question Pin
Richard Deeming21-Nov-12 8:03
memberRichard Deeming21-Nov-12 8:03 
Option 1:
It's not clean, but if you want to sort the lists, this should work:
static void Sort<T>(IList<T> sortKey, params IList<T>[] otherLists)
{
   // TODO: Validate the arguments:
   // - None of the lists are null;
   // - All of the lists have the same length;

   Action<IList<T>, IDictionary<int, int>> sortList = (list, keys) =>
   {
      var values = list
         .Select((value, i) => new { key = keys[i], value })
         .OrderBy(p => p.key).Select(p => p.value);
 
      int index = 0;
      foreach (T value in values)
      {
         list[index++] = value;
      }
   };
 
   // Key is the index in the input list;
   // Value is the index in the output list.
   var indices = Enumerable.Range(0, sortKey.Count)
      .OrderBy(i => sortKey[i])
      .Select((key, value) => new { key, value })
      .ToDictionary(p => p.key, p => p.value);
 
   sortList(sortKey, indices);
   foreach (var list in otherLists)
   {
      sortList(list, indices);
   }
}

Edit:
Missed a ToList call in the anonymous delegate which would prevent this from working. Option 2 is probably a better approach. Smile | :)

Edit 2:
Nope, the ToList call isn't needed - the OrderBy call ensures that the entire sequence is evaluated on the first call to MoveNext. D'Oh! | :doh:
It still ends up creating a copy of the list, so option 2 is still better.



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modified 22-Nov-12 7:15am.

AnswerRe: Specialized List Sorting question Pin
SledgeHammer0121-Nov-12 8:06
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AnswerRe: Specialized List Sorting question Pin
Richard Deeming21-Nov-12 8:32
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AnswerRe: Specialized List Sorting question Pin
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QuestionWinForms Class Design Pin
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GeneralRe: WinForms Class Design Pin
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GeneralRe: WinForms Class Design Pin
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QuestionUplaod Article To Codeproject Pin
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QuestionPrint Crystal Report in c# Using Access Database? Pin
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QuestionGenerate Morse Code Sound Pin
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QuestionKeeps returning NullReferenceException Pin
MacUseless20-Nov-12 23:08
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QuestionValidate XML file against rule in db Pin
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QuestionHow to set the distance between checkbox and text in using TreeView ? Pin
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QuestionHow to fix Error when i using BackgroundWorker in C# Pin
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