How to preserve Old data in Audit Trail implementation via Entity Framework

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C#

VB

Implementing Audit Trail using Entity Framework Part -1 [^]


Hi All,
I am using above link to implement Audit trail in my application. However, after I am facing two issues:-

1. Old Data is not being calculated since my entity is not of EntityObject Type, it is skipping the code and returning the null.

2. If i use same logic in following format, old value becomes equal to new value and thus correct values are not generated.

foreach (ObjectStateEntry modifiedEntryEntity in modifiedEntities)
          {
              foreach (string modifiedProperty in modifiedEntryEntity.GetModifiedProperties())
              {
                  string originalValue = modifiedEntryEntity.OriginalValues[modifiedProperty].ToString();
                  string currentValue = modifiedEntryEntity.CurrentValues[modifiedProperty].ToString();
                  if (originalValue.Trim() == currentValue.Trim())
                  {
                      continue;
                  }

              }
          }