如何在Exchange Web服务中获取所有联系人（不仅仅是前几百个） [英] How to get all contacts in Exchange Web Service (not just the first few hundreds)

问题描述

我正在使用Exchange Web Service迭代这样的联系人：

I'm using Exchange Web Service to iterate through the contacts like this:

ItemView view = new ItemView(500);
view.PropertySet = new PropertySet(BasePropertySet.IdOnly, ContactSchema.DisplayName);
FindItemsResults<Item> findResults = _service.FindItems(WellKnownFolderName.Contacts, view);
foreach (Contact item in findResults.Items)
{
  [...]
}

现在这会将结果集限制为前500个联系人-如何获得下500个联系人？是否可以进行某种分页？当然我可以将1000设置为极限。但是如果有10000怎么办？还是100000？甚至更多？

Now this restricts the result set to the first 500 contacts - how do I get the next 500? Is there some kind of paging possible? Of course I could set 1000 as Limit. But what if there are 10000? Or 100000? Or even more?

推荐答案

您可以使用在此处解释。

FindItemsResults contains更多信息可能会告诉您完成的时间。

FindItemsResults contains a MoreAvailable probably that will tell you when you're done.

基本代码如下：

while (MoreItems)
{
// Write out the page number.
Console.WriteLine("Page: " + offset / pageSize);

// Set the ItemView with the page size, offset, and result set ordering instructions.
ItemView view = new ItemView(pageSize, offset, OffsetBasePoint.Beginning);
view.OrderBy.Add(ContactSchema.DisplayName, SortDirection.Ascending);

// Send the search request and get the search results.
FindItemsResults<Item> findResults = service.FindItems(WellKnownFolderName.Contacts, view);

// Process each item.
foreach (Item myItem in findResults.Items)
{
    if (myItem is Contact)
    {
        Console.WriteLine("Contact name: " + (myItem as Contact).DisplayName);
    }
    else
    {
        Console.WriteLine("Non-contact item found.");
    }
}

// Set the flag to discontinue paging.
if (!findResults.MoreAvailable)
    MoreItems = false;

// Update the offset if there are more items to page.
if (MoreItems)
    offset += pageSize;
}   

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