WCF，部分数据传输

Question

For example, consider around 10000 records are being sent from WCF service to the calling client. As per WCF we can set the response buffer size in the web.config file. I want to get the response part by part like 1000 records at a time. How can this be achieved without any changes in the web.config file?.. Need help in this regard.

Thanks in advance.

Answer 1

See Large Data and Streaming (MSDN) for information about how to handle your situation.

By default, WCF processes messages in buffered mode. This means that the entire content of a message is present in memory before it is sent or after it is received. While that is a good strategy for most scenarios, and necessary for messaging features such as digital signatures and reliable delivery, large messages could exhaust a system's resources.

The strategy to deal with large payloads is streaming. While messages, especially those expressed in XML, are commonly thought of as being relatively compact data packages, a message might be multiple gigabytes in size and resemble a continuous data stream more than a data package. When data is transferred in streaming mode instead of buffered mode, the sender makes the contents of the message body available to the recipient in the form of a stream and the message infrastructure continuously forwards the data from sender to receiver as it becomes available