这是一个老问题，但因为它出现在我搜索这个问题的过程中，所以我想添加我的解决方案。
我们使用 Dynamics CRM 2013。据我所知，2011 的更高版本也支持这种技术。
打开实体时显示的表单由几个因素决定 - 默认表单、表单的安全角色和回退设置以及当前用户为该实体使用的最后一个表单。我们遇到了与提问者类似的问题，我们希望根据表单的值显示不同的帐户表单。我们也厌倦了 javascript 技术所经历的不断的重新加载/刷新。
我发现了一些博客文章（特别是这篇文章：http: //gonzaloruizcrm.blogspot.com/2014/11/avoiding-form-reload-when-switching-crm.html），其中提到可以编写一个插件实体的检索，允许您从存储上次使用的表单的 UserEntityUISettings 中读出值 (LastViewedFormXml)。如果不是您想要的形式，您可以写入所需的值。这避免了刷新 javascript 表单。
我必须从我找到的示例中修改一些代码才能让它工作，但我对结果很满意。您需要使用 CrmSvcUtil 生成一个实体类并将其包含在项目中。您可以从表单编辑器的 url 获取表单指南。
using System;
using System.Collections.ObjectModel;
using System.Globalization;
using System.Linq;
using System.ServiceModel;
using System.ServiceModel.Description;
using Microsoft.Xrm.Sdk;
using Microsoft.Xrm.Sdk.Messages;
using Microsoft.Xrm.Sdk.Query;
using Microsoft.Xrm.Sdk.Client;
namespace CRM.Plugin.AccountFormSwitcher
{
public class Plugin : IPlugin
{
public enum accountType
{
Customer = 100000000,
Vendor = 100000001,
Partner = 100000002,
Other = 100000003
}
public const string CustomerAccountFormId = "00000000-E53C-4DF4-BC99-93856EDD168C";
public const string VendorAccountFormId = "00000000-E49E-4197-AB5E-F353EF0E806E";
public const string PartnerAccountFormId = "00000000-B8C6-4E2B-B84E-729AA11ABE61";
public const string GenericAccountFormId = "00000000-8F42-454E-8E2A-F8196B0419AF";
public const string AccountTypeAttributeName = "cf_accounttype";
public void Execute(IServiceProvider serviceProvider)
{
if (serviceProvider == null)
{
throw new ArgumentNullException("serviceProvider");
}
// Obtain the execution context from the service provider.
IPluginExecutionContext context = (IPluginExecutionContext)serviceProvider.GetService(typeof(IPluginExecutionContext));
ITracingService tracingService = (ITracingService)serviceProvider.GetService(typeof(ITracingService));
IOrganizationServiceFactory serviceFactory = (IOrganizationServiceFactory)serviceProvider.GetService(typeof(IOrganizationServiceFactory));
IOrganizationService service = serviceFactory.CreateOrganizationService(context.UserId);
var pluginContext = (IPluginExecutionContext)context;
if (pluginContext.Stage == 20) //pre-operation stage
{
var columns = (ColumnSet)pluginContext.InputParameters["ColumnSet"];
if (!columns.Columns.Contains(AccountTypeAttributeName))
columns.AddColumn(AccountTypeAttributeName);
}
else if (pluginContext.Stage == 40) //post-operation stage
{
EntityReference currentEntity = (EntityReference)context.InputParameters["Target"];
if (currentEntity == null)
return;
var query = new QueryExpression(Account.EntityLogicalName);
query.Criteria.AddCondition("accountid", ConditionOperator.Equal, currentEntity.Id);
query.ColumnSet = new ColumnSet(AccountTypeAttributeName);
var accounts = service.RetrieveMultiple(query).Entities;
Account currentAccount = (Account)accounts[0];
SetForm(currentAccount, service, context.UserId);
}
}
private void SetForm(Account account, IOrganizationService service, Guid userId)
{
var query = new QueryExpression(UserEntityUISettings.EntityLogicalName);
query.Criteria.AddCondition("ownerid", ConditionOperator.Equal, userId);
query.Criteria.AddCondition("objecttypecode", ConditionOperator.Equal, Account.EntityTypeCode);
query.ColumnSet = new ColumnSet("lastviewedformxml");
var settings = service.RetrieveMultiple(query).Entities;
// Some users such as SYSTEM have no UserEntityUISettings, so skip.
if (settings == null || settings.Count != 1 || account.cf_AccountType == null) return;
var setting = settings[0].ToEntity<UserEntityUISettings>();
string formToUse;
switch ((accountType)account.cf_AccountType.Value)
{
case accountType.Customer:
formToUse = String.Format("<MRUForm><Form Type=\"Main\" Id=\"{0}\" /></MRUForm>", CustomerAccountFormId);
break;
case accountType.Vendor:
formToUse = String.Format("<MRUForm><Form Type=\"Main\" Id=\"{0}\" /></MRUForm>", VendorAccountFormId);
break;
case accountType.Partner:
formToUse = String.Format("<MRUForm><Form Type=\"Main\" Id=\"{0}\" /></MRUForm>", PartnerAccountFormId);
break;
case accountType.Other:
formToUse = String.Format("<MRUForm><Form Type=\"Main\" Id=\"{0}\" /></MRUForm>", GenericAccountFormId);
break;
default:
formToUse = String.Format("<MRUForm><Form Type=\"Main\" Id=\"{0}\" /></MRUForm>", GenericAccountFormId);
return;
}
// Only update if the last viewed form is not the one required for the given opportunity type
if (!formToUse.Equals(setting.LastViewedFormXml, StringComparison.InvariantCultureIgnoreCase))
{
var s = new UserEntityUISettings { Id = setting.Id, LastViewedFormXml = formToUse };
service.Update(s);
}
}
}
}
为了解决提问者的问题，它只咨询 UserEntityUISettings 一次，我不确定为什么会这样。但是为什么不使用javascript在触发属性更改时更改表单呢？我所做的，我没有遇到插件没有显示所需的任何问题。