LdapConnection SearchRequest抛出“超出大小限制”的异常。
由于我们需要使用LDAP连接到LDAP服务器，所以我们必须使用LdapConnection而不是DirectoryEntry。
以下是源代码：
SearchResponse response;
using (LdapConnection con = new LdapConnection(new LdapDirectoryIdentifier(Host, Port)))
{
if (IsSSL)
{
con.SessionOptions.SecureSocketLayer = true;
con.SessionOptions.VerifyServerCertificate =
(connection, certificate)
=> true;
}
con.Credential = new NetworkCredential(_username, _password);
con.AuthType = AuthType.Basic;
con.Bind();
if (logMessage != null)
logMessage("Connected to LDAP");
string sFilter = String.Format(
"(&(objectcategory=person)(objectclass=user){0}(!(userAccountControl:1.2.840.113556.1.4.803:=2)))",
filter
);
SearchRequest request = new SearchRequest("OU=Corp,DC=mydc,DC=com", sFilter, SearchScope.Subtree);
request.Attributes.Add(Resources.objectguid);
request.Attributes.Add(Resources.givenname);
request.Attributes.Add(Resources.sn);
request.Attributes.Add(Resources.initials);
request.Attributes.Add(Resources.samaccountname);
request.Attributes.Add(Resources.userprincipalname);
request.Attributes.Add(Resources.mail);
request.Attributes.Add(Resources.objectsid);
request.Attributes.Add(Resources.department);
request.Attributes.Add(Resources.company);
request.SizeLimit = 10;
response = (SearchResponse) con.SendRequest(request);
}在执行源代码时(我们已经使用外部第三方软件验证了凭据、主机、端口等)，我们得到以下异常：
超过了尺寸限制
描述：是在执行当前web请求时发生的一个未处理的异常。请查看堆栈跟踪以获得有关错误的更多信息，以及它起源于代码的位置。
System.DirectoryServices.Protocols.DirectoryOperationException：异常详细信息：超出了大小限制
源错误：
response = (SearchResponse) con.SendRequest(request);System.DirectoryServices.Protocols.LdapConnection.ConstructResponse(Int32 :尺寸限制超过了DirectoryOperationException +2385 System.DirectoryServices.Protocols.LdapConnection.SendRequest(DirectoryRequest请求，TimeSpan requestTimeOut ) +499 System.DirectoryServices.Protocols.LdapConnection.SendRequest(DirectoryRequest request) +50 UserSearchProvider.ADUserSearchProvider.QueryStore(UserSearchCriteriaCollection规范，Action
1 logMessage) in c:\Users\stemarie\Documents\Visual Studio 2012\Projects\Idealink.Modules\UserSearchProvider\UserSearchProvider\ADUserSearchProvider.cs:298 UserSearchProvider.UserSearchProvider.QueryAndSort(UserSearchCriteriaCollection criterias, Action1 logMessage) (c：\User\stemarie\Documents\Visual 2012\Projects\Idealink.Modules\UserSearchProvider\UserSearchProvider\UserSearchProvider.cs:77 UserSearchProvider.UserSearchProvider.Search(UserSearchCriteriaCollection规范，在c：\ UserSearchProviderTest._Default.Page_Load(Object \1 logMessage) in c:\Users\stemarie\Documents\Visual Studio 2012\Projects\Idealink.Modules\UserSearchProvider\UserSearchProvider\UserSearchProvider.cs:33 UserSearchProvider.UserSearchService.Search(UserSearchCriteriaCollection criterias, Action\logMessage中的操作1 logMessage) in c:\Users\stemarie\Documents\Visual Studio 2012\Projects\Idealink.Modules\UserSearchProvider\UserSearchProvider\UserSearchProvider.cs:33 UserSearchProvider.UserSearchService.Search(UserSearchCriteriaCollection criterias, Action1 logMessage)，在c：\1 logMessage) in c:\Users\stemarie\Documents\Visual Studio 2012\Projects\Idealink.Modules\UserSearchProvider\UserSearchProvider\UserSearchProvider.cs:33 UserSearchProvider.UserSearchService.Search(UserSearchCriteriaCollection criterias, Action\logMessage\logMessage\Visual 2012\Projects\Idealink.Modules\UserSearchProvider\UserSearchProviderTest\Default.aspx.cs:28中
让我困惑的是，我们确实指定了最大大小限制，我们不想要超过100个条目-我们想要限制它。但是，即使我们指定的SizeLimit为1，库仍然会抛出错误。
有人对这个问题有什么见解或建议吗？我们离这一目标很近，我们只需要解决最后一个问题。
回答 2
Stack Overflow用户
发布于 2012-11-26 18:48:19
事实证明，这是可行的：
try
{
response = (SearchResponse)con.SendRequest(request);
return response.Entries.Cast<SearchResultEntry>()
.Select(entry => entry.Attributes)
.Select(x => GetADUserSearchItemFromADProperties(x, logMessage))
.Where(user => user.HasName)
.Cast<IUserSearchItem>();
}
catch (DirectoryOperationException ex)
{
response = (SearchResponse) ex.Response;
return response.Entries.Cast<SearchResultEntry>()
.Select(entry => entry.Attributes)
.Select(x => GetADUserSearchItemFromADProperties(x, logMessage))
.Where(user => user.HasName)
.Cast<IUserSearchItem>();
}MSDN文档声明您获得了一个DirectoryResponse类作为DirectoryOperationException.Response属性。但是，您可以将该属性转换为SearchResponse类型，然后使用SearchResponse.Entries属性获取在访问指定的SizeLimit之前收到的条目。
我已经尝试过，我得到了预期的结果，我只是有点不高兴，因为我必须与一个例外的工作，以执行操作。
Stack Overflow用户
发布于 2014-07-14 19:30:59
您应该在类似于此的函数中使用cookie。函数返回SearchResponse对象的集合，调用者应该循环这些对象。
private List<SearchResponse> SearchDirectory(string distinguishedName, string searchFilter, System.DirectoryServices.Protocols.SearchScope searchScope, params string[] attributeList)
{
List<SearchResponse> result = new List<SearchResponse>();
SearchResponse response = null;
int maxResultsToRequest = 100;
try
{
PageResultRequestControl pageRequestControl = new PageResultRequestControl(maxResultsToRequest);
// used to retrieve the cookie to send for the subsequent request
PageResultResponseControl pageResponseControl;
SearchRequest searchRequest = new SearchRequest(distinguishedName, searchFilter, searchScope, attributeList);
searchRequest.Controls.Add(pageRequestControl);
while (true)
{
response = (SearchResponse)connection.SendRequest(searchRequest);
result.Add(response);
pageResponseControl = (PageResultResponseControl)response.Controls[0];
if (pageResponseControl.Cookie.Length == 0)
break;
pageRequestControl.Cookie = pageResponseControl.Cookie;
}
}
catch (Exception e)
{
// do something with the error
}
return result;
}https://stackoverflow.com/questions/13567685
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