c# String Split or Replace

Hello Gurus,
I have a requirement where i have sentence,in which the first '-' symbol should be changed to '+'
This is the string
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string Name = "Vedha Diagnostic Centre - Plot No 7-65, Ibrahimpatnam, Kummara Kunta Colony, Kukatpally,hyderabad-500072"

Output should be as follows:
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Vedha Diagnostic Centre + Plot No 7-65, Ibrahimpatnam, Kummara Kunta Colony, Kukatpally,hyderabad-500072

only the first '-' should be changed to '+', remaining sentence has no changes. 
How to achieve this,need you assistance on this.

Thanks in Advance.