Convert varchar to nvarchar

My company use sql server 2000 to store data . There is a table with a column named 'Vattu' . The problem is that : this column declare as varchar data type , however it's save both unicode and anscii value !

So every time I show this column data on web , it show unreadable characters. Is there any way to convert data to unicode value using c# ?

Solution

A quick google search would have given you the answer. Anyway you use System.Text.Encoding to encode the ascii to unicode. check the sample code at Encoding.Convert Method

Also converting the column datatype to NVarchar will be better in long run. Doing so you will save CPU processing that you will be using due to conversion at c# level.

Is this declaration UB?
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