C# wcf entity-framework wcf-data-services

更改 DataServiceContext 中的最大消息大小

发布于 2024-11-02 07:15:48 字数 717 浏览 3 评论 0原文

我正在使用 DataServiceContext 从托管 dbml 的 wcf 服务获取数据。一般情况下它工作正常，但返回大量数据（例如二进制文件）的查询会产生常见的 WCF 错误：

The maximum message size quota for incoming messages (65536) has been exceeded. To increase the quota, use the MaxReceivedMessageSize property on the appropriate binding

问题是我找不到如何更改通道的消息大小。

这是我用来初始化该类的代码：

var channel = new RPDataModelDataContext(DataServiceBaseAddress);
channel.Credentials = CredentialCache.DefaultCredentials;

其中 RPDataModelDataContext 是使用实体框架生成的客户端代理类

public partial class RPDataModelDataContext : 
    global::System.Data.Services.Client.DataServiceContext
{
    // ...

任何人都可以指出我正确的方向吗？

原文

I am using DataServiceContext to get data from a wcf service which is hosting a dbml. It works fine in general but queries that return large amounts of data (e.g. binary files) create the usual WCF error:

The maximum message size quota for incoming messages (65536) has been exceeded. To increase the quota, use the MaxReceivedMessageSize property on the appropriate binding

The problem is I cannot find how to change the message size of the channel.

Here's the code I use to initialise the class:

var channel = new RPDataModelDataContext(DataServiceBaseAddress);
channel.Credentials = CredentialCache.DefaultCredentials;

where RPDataModelDataContext is a client proxy class generated with the entityframework

public partial class RPDataModelDataContext : 
    global::System.Data.Services.Client.DataServiceContext
{
    // ...

Can anyone point me to the right direction?

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楠木可依 2024-11-09 07:15:48

我在这方面也遇到了很多问题。我遗漏了三个细节。

您必须准确指定服务名称。这应该是完全限定的服务名称。（即Namespace.ClassName）
您必须提供端点的确切地址。（见下面的代码）
<前><代码><服务>;

<服务名称=“YourDomainNameHere.YourClassNameHere”>

<端点地址=“http://localhost:19766/YourServiceName.svc”绑定=“webHttpBinding”绑定配置=“higherMessageSize”合同=“System.Data.Services.IRequestHandler”>
必须指定 maxReceivedMessageSize 和 maxBufferSize
<前><代码><绑定>;

<绑定名称=“higherMessageSize”maxReceivedMessageSize=“2048000”maxBufferSize=“2048000”/>

I was having tons of problems with this one as well. There were three details I was missing.

You MUST specify the service name exactly. This should be the fully qualified service name. (ie. Namespace.ClassName)

You MUST provide the EXACT address of the endpoint. (See code below)

<services>
    <!-- The service name below has to be the EXACT Namespace.ClassName of your WCF Data Service-->
    <service name="YourDomainNameHere.YourClassNameHere">
        <!-- The address below must be the EXACT address of your service-->
        <endpoint address ="http://localhost:19766/YourServiceName.svc" binding="webHttpBinding" bindingConfiguration="higherMessageSize" contract ="System.Data.Services.IRequestHandler">
        </endpoint>
    </service>
</services>

The maxReceivedMessageSize and the maxBufferSize must both be specified

<bindings>
    <webHttpBinding>
        <!-- The maxReceivedMessageSize and the maxBufferSize must both be specified as shown below-->
        <binding name="higherMessageSize" maxReceivedMessageSize ="2048000" maxBufferSize="2048000"/>
    </webHttpBinding>
</bindings>

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