如何使用具有相同键的两个不同字典的值来构建新字典

Question

假设我们有两个带有以下密钥对值的字典:

• 字典1:[{1,abc} {2,cde} {3,efg}]
• 字典2:[{1,123} {2,234} {3,345}]

• 我想创建一个字典如下:字典3:[{abc,123} {cde,234} {efg,345}]

      fieldValues = new List<List<string>>();
      docFieldKey = new List<List<string>>();
      docFieldValueDict = new Dictionary<string, List<string>>();
      docKeyDict = new Dictionary<string, List<string>>();
      iterateDocKeyDict = new List<string>();
      iterateDocFldValueDict = new List<string>();
  
      //To read row wise and store key and all values
      for (limit = 0; limit < docNames.Count; limit++)
      {
          for (row = 0; row < excelData.Count; row++)
          {
              if (excelData[row] == docNames[limit])
              {
                  for (colLimit = row + 1; colLimit < fieldNames.Count; colLimit++)
                  {
                      flag = true;
                      fieldValues.Add(new List<string>());
                      fieldValues[limit].Add(excelData[colLimit]);
                  }
                  if (flag == true)
                  {
                      docFieldValueDict.Add(docNames[limit], fieldValues[limit]);                          
                  }
              }
          }
  
      }
  
      //To add concatenated key for each docName
      for (limit = 0; limit < docNames.Count; limit++)
      {
          for (colLimit = 0; colLimit < concatKey.Count; colLimit++)
          {
              if (concatKey[colLimit].Contains(docNames[limit]))
              {
                  for (col = colLimit; col < fieldNames.Count - 1; col++)
                  {
                      flag = true;
                      docFieldKey.Add(new List<string>());
                      docFieldKey[limit].Add(concatKey[col]);
                  }
                  if (flag == true)
                  {
                      docKeyDict.Add(docNames[limit], docFieldKey[limit]);
                  }
              }
          }
  
      }
  
      //to merge the key and the value from both dictionaries
      for (limit = 0; limit <docKeyDict.Count; limit++)
      {
          var docKeyDictCompare = docKeyDict.ElementAt(limit);
          var docFldValueDictCompare = docFieldValueDict.ElementAt(limit);
          iterateDocKeyDict = docKeyDictCompare.Value;
          iterateDocFldValueDict = docFldValueDictCompare.Value;
          if (docKeyDictCompare.Key == docFldValueDictCompare.Key)
          {
              for (col = 0; col < fieldNames.Count - 1; col++)
              {
                  if ((iterateDocKeyDict.ElementAt(col)!=string.Empty) && (iterateDocFldValueDict.ElementAt(col)!=string.Empty))
                  {
                      flag = true;
                  }
              }
  
              if (flag == true)
              {
                  keyValuePairDict.Add(iterateDocKeyDict.ElementAt(col), iterateDocFldValueDict.ElementAt(col));
              }
          }
      }
  

我尝试了上面的但是我得到的索引超出了范围异常

if ((iterateDocKeyDict.ElementAt(col)!=string.Empty) &&(iterateDocFldValueDict.ElementAt(col)!=string.Empty)) 控制台中显示错误消息

Answer 1

只是看看你的样本词典我会建议:

var dic1 = /* [ {1,abc} {2,cde} {3,efg} ] */;
var dic2 = /* [ {1,123} {2,234} {3,345} ] */;
var dic3 = dic1.ToDictionary(x => x.Value, x => dic2[x.Key]);

但是看看你相当长的代码示例,我不确定它是否足够.