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我正在使用CRM 4.0 sdk通过从asp.net网页上的文本框中输入的关键字来查询kbarticles。我正在使用SearchByKeywordsKbArticleRequest消息来执行此操作。单个关键字可以正常工作，但如果输入了多个单词，则会发生服务器错误。这里是我的代码：CRM 4.0 SDK中的SearchByKeywordsKbArticleRequest C＃
CrmAuthenticationToken token = new CrmAuthenticationToken();
token.AuthenticationType = 0;
token.OrganizationName = "omitted";
CrmService service = new CrmService();
service.Url = "omitted"
service.CrmAuthenticationTokenValue = token;
service.Credentials = System.Net.CredentialCache.DefaultCredentials;
//RetrieveMultipleResponse allArticlesResponse = getAllArticles();
SearchByKeywordsKbArticleRequest kb = new SearchByKeywordsKbArticleRequest();
String rawSearchText = keyword;
ColumnSet col = new ColumnSet();
col.Attributes = new string[] { "title", "kbarticleid" };
kb.ColumnSet = col;
kb.SearchText = rawSearchText.Trim();
kb.ReturnDynamicEntities = false;
SearchByKeywordsKbArticleResponse response =
(SearchByKeywordsKbArticleResponse)service.Execute(kb);
return response.BusinessEntityCollection;
任何线索？