How to sub string a string value using a character value in SSRS

In a report you may want to get a part of a string value by considering a character or characters.
Such a situation we have to use Mid and InStr functions.

Assume that the Description filed value contains "/".
If we want to get the string before that "/", we can use the below expression in the report text box field.

   1: Mid(Fields!Description.Value,1,InStr(Fields!Description.Value,"/")-1)

InStr function provides at which location that the "/' character exists.
You can get the last part after the "/" character by using the below expression

   1: Mid(Fields!Description.Value,InStr(Fields!Description.Value,"/")+1,Len(Fields!Description.Value))