Sharepoint 列表中的项目发生更改时向 Azure ServiceBus 发送消息

Question

我想在 SharePoint 列表中的某些项目发生更改时将消息发送到 Azure ServiceBus 队列。当您 upload/delete 一个文件时，我需要创建一个事件，使用文件的内容和 ID 在 Azure 服务总线中排队消息。我不知道如何创建这样的活动，有人可以指点我一些文章，开始教程。

Answer 1

您正在寻找事件接收者：

How to: Create an Event Receiver

By creating event receivers, you can respond when a user interacts with SharePoint items such as lists or list items. For example, the code in an event receiver can be triggered when a user changes the calendar or deletes a name from a contacts list.

文档中的示例代码：

public override void ItemAdded(SPItemEventProperties properties)
{
    properties.ListItem["Patient Name"] = "Scott Brown";
    properties.ListItem.Update();
    base.ItemAdded(properties);
}

现在您需要更改此代码以将消息发送到服务总线队列： Get started with Service Bus Queues

public override void ItemAdded(SPItemEventProperties properties)
{
    var connectionString = "<Your connection string>";
    var queueName = "<Your queue name>";
    var client = QueueClient.CreateFromConnectionString(connectionString, queueName);
    var message = new BrokeredMessage("This is a test message!");

    client.Send(message);

    base.ItemAdded(properties);
}

如果您需要发送文件内容，请记住以下几点：

Service Bus queues support a maximum message size of 256 Kb (the header, which includes the standard and custom application properties, can have a maximum size of 64 Kb).

所以您可能需要将您的文件存储到 blob 存储中，并且只需向队列发送一条消息，其中还包含创建 blob 的 ID。

Get started with Azure Blob storage using .NET

Sharepoint 列表中的项目发生更改时向 Azure ServiceBus 发送消息

Send message to Azure ServiceBus when items have changed in a Sharepoint List

c#

sharepoint

azure

azureservicebus