public static void SearchBySeek(Folder folder)
{
var rnd = new Random();
var view = new ItemView(1, 0);
view.OrderBy.Add(MyNamedProp, SortDirection.Ascending);
view.PropertySet = new PropertySet(BasePropertySet.IdOnly, MyNamedProp);
var sw = new Stopwatch();
var filter = new SearchFilter.Exists(MyNamedProp);
sw.Start();
for (var x = 0; x < NumberOfSearchesToPerform; x++)
{
var numberToSearchFor = rnd.Next(0, NumberOfMessagesToCreate);
int high = folder.FindItems(filter, view).TotalCount - 1;
var low = 0;
var found = false;
while (!found)
{
view.Offset = ((high - low) / 2) + low;
var resultItem = folder.FindItems(filter, view);
if (resultItem.Items.Count < 1)
{
break;
}
long myId;
resultItem.Items[0].TryGetProperty(MyNamedProp, out myId);
if (myId == numberToSearchFor)
{
found = true;
}
else
{
if (myId > numberToSearchFor)
{
high = (int)myId - 1;
}
else
{
low = (int)myId + 1;
}
}
}
if (!found)
{
Console.WriteLine("Warning! No item found!");
}
}
sw.Stop();
Console.WriteLine("SearchBySeek finished after: " + sw.ElapsedMilliseconds + " milliseconds.");
}
/// <summary>
/// Access a named property by identifier in a default named property set. Ths sample shows how to get
/// the location property.
/// </summary>
/// <param name="service">An ExchangeService object with credentials and the EWS URL.</param>
private static void AccessNamedMAPIPropertyById(ExchangeService service)
{
// Define the meeting location property.
ExtendedPropertyDefinition PidLidLocation = new ExtendedPropertyDefinition(DefaultExtendedPropertySet.Appointment,
0x00008208,
MapiPropertyType.String);
// Retrieve a collection of 10 items.
ItemView view = new ItemView(10);
// Create a search filter that filters email based on the existence of the extended property.
SearchFilter.Exists filterPidLidLocation = new SearchFilter.Exists(PidLidLocation);
// Create a property set that includes the extended property definition.
view.PropertySet =
new PropertySet(BasePropertySet.IdOnly, ItemSchema.Subject, PidLidLocation);
FindItemsResults <Item> findResults;
// Search the default calendar folder with the defined view and search filter. This results in a call to EWS by
// using the FindItem operation.
try
{
findResults = service.FindItems(WellKnownFolderName.Calendar, filterPidLidLocation, view);
// Search the item collection returned in the results for the extended property.
foreach (Item item in findResults.Items)
{
Console.WriteLine("Item subject: {0}", item.Subject);
// Determine whether the item has the custom extended property set.
if (item.ExtendedProperties.Count > 0)
{
// Display the extended name and value of the extended property.
foreach (ExtendedProperty extendedProperty in item.ExtendedProperties)
{
Console.WriteLine("\tExtended Property Value: " + extendedProperty.Value);
}
}
else
{
Console.WriteLine("Did not find the PidLidLocation property.");
}
}
}
catch (Exception ex)
{
Console.WriteLine("Error: {0}", ex.Message);
}
}
/// <summary>
/// Access a property by its property set identified by its GUID and property identifier.
/// This sample shows how to get the task due date property.
/// </summary>
/// <param name="service">An ExchangeService object with credentials and the EWS URL.</param>
private static void AccessMAPIPropertyInPropertySetByGuidAndName(ExchangeService service)
{
// Define the normalized subject property.
ExtendedPropertyDefinition PidLidTaskDueDate = new ExtendedPropertyDefinition(new Guid("00062003-0000-0000-C000-000000000046"),
0x00008105,
MapiPropertyType.SystemTime);
// Retrieve a collection of 10 items.
ItemView view = new ItemView(10);
// Create a search filter that filters email based on the existence of the extended property.
SearchFilter.Exists filterPidLidTaskDueDate = new SearchFilter.Exists(PidLidTaskDueDate);
// Create a property set that includes the extended property definition.
view.PropertySet =
new PropertySet(BasePropertySet.IdOnly, ItemSchema.Subject, PidLidTaskDueDate);
FindItemsResults <Item> findResults;
try
{
// Search the default Tasks folder with the defined view and search filter. This results in a FindItem operation call to EWS.
findResults = service.FindItems(WellKnownFolderName.Tasks, filterPidLidTaskDueDate, view);
// Search the item collection returned in the results for the extended property.
foreach (Item item in findResults.Items)
{
Console.WriteLine("Item subject: {0}", item.Subject);
// Determine whether the item has the custom extended property set.
if (item.ExtendedProperties.Count > 0)
{
// Display the extended name and value of the extended property.
foreach (ExtendedProperty extendedProperty in item.ExtendedProperties)
{
Console.WriteLine("\Extended Property Value: " + extendedProperty.Value);
}
}
else
{
Console.WriteLine("\Did not find the PidLidTaskDueDate property.");
}
}
}
catch (Exception ex)
{
Console.WriteLine("Error: {0}", ex.Message);
}
}
/// <summary>
/// This method gets the contacts that have the special DisplayName and property
/// definitions in the special folder.
/// </summary>
private static List <Contact> GetContacts(Folder contactsFolder, String name,
params PropertyDefinition[] schemas)
{
if (contactsFolder == null)
{
return(null);
}
List <Contact> contacts = new List <Contact>();
SearchFilter.SearchFilterCollection filters =
new SearchFilter.SearchFilterCollection(LogicalOperator.And);
if (!String.IsNullOrWhiteSpace(name))
{
SearchFilter searchFilter = new SearchFilter.ContainsSubstring(ContactSchema.DisplayName, name);
filters.Add(searchFilter);
}
if (schemas != null)
{
foreach (PropertyDefinition schema in schemas)
{
SearchFilter searchFilter = new SearchFilter.Exists(schema);
filters.Add(searchFilter);
}
}
const Int32 pageSize = 10;
ItemView itemView = new ItemView(pageSize);
PropertySet propertySet = new PropertySet(BasePropertySet.IdOnly, schemas);
propertySet.Add(ContactSchema.DisplayName);
itemView.PropertySet = propertySet;
FindItemsResults <Item> findResults = null;
do
{
findResults = contactsFolder.FindItems(filters, itemView);
itemView.Offset += pageSize;
contacts.AddRange(findResults.Cast <Contact>());
} while (findResults.MoreAvailable);
return(contacts);
}
/// <summary>
/// Create a search filter for filtering items based on whether a property exists for an item.
/// </summary>
/// <param name="service">An ExchangeService object with credentials and the EWS URL.</param>
private static void UseNotExistsSearchFilter(ExchangeService service)
{
// Create a definition for an extended property that represents a custom X-Header.
ExtendedPropertyDefinition xExperimentalHeader = new ExtendedPropertyDefinition(DefaultExtendedPropertySet.InternetHeaders,
"X-Experimental",
MapiPropertyType.String);
// The Exists filter determines whether the a property exists on an item.
// This filter indicates whether the custom X-Experimental property exists
// on an item. If the Exists condition is used, then items with the
// X-Experimental property are returned in the search results. The Exists
// filter will return results even if the value of the property is null
// or empty.
SearchFilter.Exists exists = new SearchFilter.Exists(xExperimentalHeader);
// The Not filter negates the result of another filter.
// This filter indicates that the results of the Exists filter are negated.
SearchFilter.Not not = new SearchFilter.Not(exists);
// Create a nonpaged view that returns items with the Subject and X-Experimental
// properties.
ItemView view = new ItemView(10);
view.PropertySet = new PropertySet(EmailMessageSchema.Subject, xExperimentalHeader);
try
{
// Find items where the X-Experimental property is present on the item. This results
// in a FindItem operation call to EWS.
FindItemsResults <Item> results = service.FindItems(WellKnownFolderName.MsgFolderRoot, exists, view);
// Process the results for finding items that contain the X-Experimental property.
Console.WriteLine("Sent a request to find items where the X-Experimental property exists on the item.");
UseNotExistsHelper(results, xExperimentalHeader);
// Find items where the X-Experimental property is not present on the item. This results
// in a FindItem operation call to EWS.
FindItemsResults <Item> results2 = service.FindItems(WellKnownFolderName.MsgFolderRoot, not, view);
// Process the results for finding items that do not contain the X-Experimental property.
Console.WriteLine("Sent a request to find items where the X-Experimental property does not exist on the item.");
UseNotExistsHelper(results2, xExperimentalHeader);
}
catch (Exception ex)
{
Console.WriteLine("Error: {0}", ex.Message);
}
}
/// <summary>
/// Find and view a custom extended property on an email message.
/// </summary>
/// <param name="service">An ExchangeService object with credentials and the EWS URL.</param>
private static void ViewCustomExtendedProperties(ExchangeService service)
{
// Define a view of 10 items in the Drafts folder.
ItemView view = new ItemView(10);
// Get the GUID for the property set.
Guid MyPropertySetId = new Guid("{C11FF724-AA03-4555-9952-8FA248A11C3E}");
// Create a definition for the extended property.
ExtendedPropertyDefinition extendedPropertyDefinition =
new ExtendedPropertyDefinition(MyPropertySetId, "Expiration Date", MapiPropertyType.String);
// Create a search filter that filters email based on the existence of the extended property.
SearchFilter.Exists customPropertyExistsFilter = new SearchFilter.Exists(extendedPropertyDefinition);
// Create a property set that includes the extended property definition.
view.PropertySet =
new PropertySet(BasePropertySet.IdOnly, ItemSchema.Subject, extendedPropertyDefinition);
// Search the Drafts folder by using the defined view and search filter. This results in a FindItem operation call to EWS.
FindItemsResults <Item> findResults = service.FindItems(WellKnownFolderName.Drafts, customPropertyExistsFilter, view);
// Search the email collection returned in the results for the extended property.
foreach (Item item in findResults.Items)
{
Console.WriteLine(item.Subject);
// Determine whether the item has the custom extended property set.
if (item.ExtendedProperties.Count > 0)
{
// Display the extended name and value of the extended property.
foreach (ExtendedProperty extendedProperty in item.ExtendedProperties)
{
Console.WriteLine(" Extended Property Name: " + extendedProperty.PropertyDefinition.Name);
Console.WriteLine(" Extended Property Value: " + extendedProperty.Value);
}
}
else
{
Console.WriteLine(" This email message does not have the 'Expiration Date' extended property set on it");
}
}
}
/// <summary>
/// Access a named property by name in a default named property set. Ths sample shows how to get
/// the junk email move stamp property.
/// </summary>
/// <param name="service">An ExchangeService object with credentials and the EWS URL.</param>
private static void AccessNamedMAPIPropertyByName(ExchangeService service)
{
// Define the http://schemas.microsoft.com/exchange/junkemailmovestamp secure messaging property.
ExtendedPropertyDefinition PidNameExchangeJunkEmailMoveStamp = new ExtendedPropertyDefinition(DefaultExtendedPropertySet.PublicStrings,
"http://schemas.microsoft.com/exchange/junkemailmovestamp",
MapiPropertyType.Integer);
// Retrieve a collection of 10 items.
ItemView view = new ItemView(10);
// Create a search filter that filters email based on the existence of the extended property.
SearchFilter.Exists exchangeJunkEmailMoveStampFilter = new SearchFilter.Exists(PidNameExchangeJunkEmailMoveStamp);
// Create a property set that includes the extended property definition.
view.PropertySet =
new PropertySet(BasePropertySet.IdOnly, ItemSchema.Subject, PidNameExchangeJunkEmailMoveStamp);
// Search the Junk Email folder with the defined view and search filter. This results in a FindItem operation call to EWS.
FindItemsResults <Item> findResults = service.FindItems(WellKnownFolderName.JunkEmail, exchangeJunkEmailMoveStampFilter, view);
// Search the item collection returned in the results for the extended property.
foreach (Item item in findResults.Items)
{
Console.WriteLine(item.Subject);
// Determine whether the item has the custom extended property set.
if (item.ExtendedProperties.Count > 0)
{
// Display the extended name and value of the extended property.
foreach (ExtendedProperty extendedProperty in item.ExtendedProperties)
{
Console.WriteLine("\tExtended Property Name: " + extendedProperty.PropertyDefinition.Name);
Console.WriteLine("\tExtended Property Value: " + extendedProperty.Value);
}
}
else
{
Console.WriteLine("\tThis");
}
}
}
