如何将Xrm.EntityCollection转换为List？

Question

概述:

我正在编写FetchXML查询以返回Dynamics 2015在线CRM实例中具有已禁用邮箱的用户.现在我来到一个需要将查询结果绑定到ListView的阶段.(该项目使用Dynamics SDK 2015库.)

为了做到这一点,我试图将返回的结果(即EntityCollection - >)转换为列表.但是CRMSDKTypeProxy在我的演员代码中找不到.

我正在按照这个例子的第二个答案进行演员:

将实体集转换为Ilist,其中Entity Collection未实现IEnumerable

题:

有谁知道如何引用CRMSDKTypeProxy？或者将我的收藏品投射到列表的任何替代方法？

代码:(简短示例)

        if (ctrl.CrmConnectionMgr != null && ctrl.CrmConnectionMgr.CrmSvc != null && ctrl.CrmConnectionMgr.CrmSvc.IsReady)
        {
            CrmServiceClient svcClient = ctrl.CrmConnectionMgr.CrmSvc;
            if (svcClient.IsReady)
            {
                // Get data from CRM . 
                string DisabledMailBoxUsersFetchXML =
                    @"<fetch version='1.0' output-format='xml-platform' mapping='logical' distinct='false'>
                      <entity name='systemuser'>
                        <attribute name='fullname' />
                        <attribute name='businessunitid' />
                        <attribute name='title' />
                        <attribute name='address1_telephone1' />
                        <attribute name='positionid' />
                        <attribute name='systemuserid' />
                        <order attribute='fullname' descending='false' />
                        <link-entity name='mailbox' from='mailboxid' to='defaultmailbox' alias='aa'>
                          <filter type='and'>
                            <condition attribute='statecode' operator='eq' value='1' />
                          </filter>
                        </link-entity>
                      </entity>
                    </fetch>";


                var DisabledMailBoxUsersResult = svcClient.GetEntityDataByFetchSearchEC(DisabledMailBoxUsersFetchXML);


                if (DisabledMailBoxUsersResult != null)
                {
                   //perform the cast here --->
                    var disabledMailBoxUsersList = (from t in DisabledMailBoxUsersResult.Entities select t as CRMSDKTypeProxy.SystemUser).ToList();
                    disabledMailboxUserLBx.ItemsSource = disabledMailBoxUsersList;
                }
                else
                    MessageBox.Show("All user's mailboxes are approved..");

            }
        }

Answer 1

您可以使用该ToEntity<T>方法转换为强类型实体,如下所示:(在此片段service中,实现IOrganizationService接口query的QueryExpression对象是一个对象.)

// RetrieveMultiple will never return null, so this one-liner is safe to use.
var userList = service.RetrieveMultiple(query)
    .Entities
    .Select(e => e.ToEntity<SystemUser>())
    .ToList();

我注意到你正在使用CrmServiceClient的Microsoft.Xrm.Tooling.Connector命名空间.这是在Dynamics CRM 2013中引入的.

您的代码可能如下所示:

var userList = svcClient.OrganizationServiceProxy
    .RetrieveMultiple(new FetchExpression(fetchXml))
    .Entities
    .Select(e => e.ToEntity<SystemUser>())
    .ToList();

或者这也应该工作:

var userList = svcClient.GetEntityDataByFetchSearchEC(fetchXml)
    .Entities
    .Select(e => e.ToEntity<SystemUser>())
    .ToList();