HttpRequestHeaders::IfUnmodifiedSince Property
.NET Framework (current version)
Gets or sets the value of the If-Unmodified-Since header for an HTTP request.
Assembly: System.Net.Http (in System.Net.Http.dll)
public: property Nullable<DateTimeOffset> IfUnmodifiedSince { Nullable<DateTimeOffset> get(); void set(Nullable<DateTimeOffset> value); }
Property Value
Type: System::Nullable<DateTimeOffset>The value of the If-Unmodified-Since header for an HTTP request.
Universal Windows Platform
Available since 8
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
Available since 8
.NET Framework
Available since 4.5
Portable Class Library
Supported in: portable .NET platforms
Windows Phone
Available since 8.1
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