How to delete entries from a dictionary using the value

Question

I have a dictionary collection as bleow:

mydic.addvalue(key1, val1)
mydic.addvalue(key2, val1)
mydic.addvalue(key3, val1)
mydic.addvalue(key4, val2)
mydic.ad         


        

Answer 1

The answer it's old but this is how I do the same thing without create another Dictionary.

foreach (KeyValuePair x in MyDic) {

  if (x.Value == "val1")) 
  {  MyDic.Remove(x.Key); } 
}