RouteData.GetRequiredString(String) Method    
Definition
Important
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Retrieves the value with the specified identifier.
public:
 System::String ^ GetRequiredString(System::String ^ valueName);
	public string GetRequiredString(string valueName);
	member this.GetRequiredString : string -> string
	Public Function GetRequiredString (valueName As String) As String
	Parameters
- valueName
 - String
 
The key of the value to retrieve.
Returns
The element in the Values property whose key matches valueName.
Exceptions
A value does not exist for valueName.