MS CRM 2011 C#中获取Web Resource

 

原创地址：http://www.cnblogs.com/jfzhu/archive/2013/02/15/2913077.html

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我在以前的文章中讲过如何用JScript读取web resource资源，我在本文中将要讲解如何在C#中获取web resource资源。

 

有时候可能有这样的需求，你需要在一个插件中读取某个xml web resource的内容，并将该xml文件作为附件创建一封E-mail。或者该xml文档是插件的一个配置文件。这时，你就需要在C#中获取web resource资源了。CRM中web resource不过是一个特殊的entity，在数据库中你也可以看到web resource table。web resource的内容（content）以Base64编码保存在数据库中（参见Base 64 Encoding 编码）。你只需要知道web resource的name，然后就可以用RetrieveMultiple方法获取该web resource。下面的代码演示了，如何获取一个名为aw_testxml.xml的web resource，并将其内容作为附件发送给一封E-mail。

// Create an e-mail message.    
// Create the 'From:' activity party for the email 
ActivityParty fromParty = new ActivityParty 
{ PartyId = new EntityReference(SystemUser.EntityLogicalName, new Guid("F6F5BB29-D519-E211-B109-B499BAFDBEDA")) 
};// Create the 'To:' activity party for the email 
ActivityParty toParty = new ActivityParty 
{ PartyId = new EntityReference(SystemUser.EntityLogicalName, new Guid("F6F5BB29-D519-E211-B109-B499BAFDBEDA")) 
};Email email = new Email 
{ To = new ActivityParty[] { toParty }, From = new ActivityParty[] { fromParty }, Subject = "SDK Sample e-mail", Description = "SDK Sample for SendEmail Message.", DirectionCode = true 
}; 
Guid _emailId = service.Create(email);QueryExpression mySavedQuery = new QueryExpression 
{ ColumnSet = new ColumnSet(true), EntityName = WebResource.EntityLogicalName, Criteria = new FilterExpression() { Conditions = {                        new ConditionExpression { AttributeName = "name", Operator = ConditionOperator.Equal, Values = {"aw_testxml.xml"} } } } 
};EntityCollection ec = service.RetrieveMultiple(mySavedQuery); 
if (ec != null && ec.Entities != null && ec.Entities.Count > 0) 
{ WebResource webresource = ec.Entities[0].ToEntity<WebResource>(); ActivityMimeAttachment _sampleAttachment = new ActivityMimeAttachment { ObjectId = new EntityReference(Email.EntityLogicalName, _emailId), ObjectTypeCode = Email.EntityLogicalName, Subject = "Sample Attachment", Body = webresource.Content, FileName = "ExampleAttachment.xml" };service.Create(_sampleAttachment); 
}