System.Net.WebHeaderCollectionTests.WebHeaderCollectionTest.RequestThenResponseHeaders_Add_Throws C# (CSharp) Method

        public void RequestThenResponseHeaders_Add_Throws()
        {
            WebHeaderCollection w = new WebHeaderCollection();
            w[HttpRequestHeader.Accept] = "text/json";
            Assert.Throws<InvalidOperationException>(() => w[HttpResponseHeader.ContentLength] = "123");
        }