System.Net.Http 4.0.0.0 ReferenceTypeConstraint System.Object System.Collections.Generic.ICollection<T> System.Collections.Generic.IEnumerable<T> To be added. To be added. Represents a collection of header values. Method 4.0.0.0 System.Void To be added. To be added. To be added. Method 4.0.0.0 System.Void To be added. Removes all entries from the . Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Void To be added. To be added. To be added. To be added. Property 4.0.0.0 System.Int32 To be added. To be added. Gets the number of headers in the . Method 4.0.0.0 System.Collections.Generic.IEnumerator<T> This enumerator returns the keys of the collection as strings.The foreach statement of the C# language (for each in Visual Basic) hides the complexity of the enumerators. Therefore, using foreach is recommended, instead of directly manipulating the enumerator. Enumerators can be used to read the data in the collection, but they cannot be used to modify the underlying collection. Initially, the enumerator is positioned before the first element in the collection. Returns an enumerator that iterates through the . Returns . An enumerator for the instance. Property 4.0.0.0 System.Boolean To be added. To be added. Gets a value indicating whether the instance is read-only. Method 4.0.0.0 System.Void To be added. Parses and adds an entry to the . The entry to add. Method 4.0.0.0 System.Boolean To be added. To be added. To be added. To be added. Method 4.0.0.0 System.Collections.IEnumerator To be added. Returns an enumerator that iterates through the . Returns . An enumerator for the instance. Method 4.0.0.0 System.String To be added. Returns a string that represents the current object. object. Returns . A string that represents the current object. Method 4.0.0.0 System.Boolean To be added. Determines whether the input could be parsed and added to the . Returns . true if the could be parsed and added to the instance; otherwise, false The entry to validate.