Cache Policy. Set Max Age(TimeSpan) Method
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Cache-Control: max-age HTTP header based on the specified time span.
public: void SetMaxAge(TimeSpan delta);
public void SetMaxAge (TimeSpan delta);
member this.SetMaxAge : TimeSpan -> unit
Public Sub SetMaxAge (delta As TimeSpan)
The time span used to set the
Control: max-age header.
delta is less than 0 or greater than one year.
The following code example demonstrates how to set the
Cache-Control: max-age header to 0 hours, 30 minutes, and 0 seconds.
TimeSpan ts = new TimeSpan(0,30,0); Response.Cache.SetMaxAge(ts);
Dim ts As New TimeSpan(0,30,0) Response.Cache.SetMaxAge(ts)
Max-age is the maximum absolute time a document is allowed to exist before being considered stale.
The SetMaxAge method does not use sliding expiration and will fail if the expiration date violates the principle of restrictiveness.
If the SetMaxAge method is called repeatedly, on the second and subsequent calls, the value of the maximum age can only be decreased.