.net - How to compare the values in the dictionary with the new values? -


i have dictionary variable having 2 values have retrieved db. need update values in db , while updating need check whether updated values exists in dictionary values or not. how can compare. far have done much. please me whether right or wrong.

retrieving datas db , stoing in dictionary variable "dictionaryname"

for each row datarow in ds.tables(0).rows     dictionaryname.add(row("engmemid").tostring(), row("engmememail").tostring()) next 

after have compare mew value.

        dim pair keyvaluepair(of string, string)          each pair in dictionaryname             if dictionaryname.containskey(newmember.engmemid)                 ---condition compare emailid's                      notifyonupdate(newmember)                 ---             end if         next 

after comparing containskey(), how can compare old , new email id's.

please me compare these 2 values, dictionary new value.

thanks,

udhaya s.

try this

 dim oldvalue string  if memberemailllist.trygetvalue(engmemid, oldvalue) andalso oldvalue <> engmememail         notifyonupdate(newmember)  end if 

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