using System;
    using Microsoft.Xrm.Sdk;
    using Microsoft.Xrm.Sdk.Messages;
    using Microsoft.Xrm.Sdk.Metadata;

    /// <summary>
    /// 创建DateTime类型的字段
    /// </summary>
    public class CreateDateTimeAttribute
    {
         private string entityName = "new_class";

         public void Create(IOrganizationService service)
         {
             CreateAttributeRequest request = new CreateAttributeRequest();
             //关联的实体名称
             request.EntityName = entityName;
             DateTimeAttributeMetadata dateAttr = new DateTimeAttributeMetadata();
             //字段名称
             dateAttr.LogicalName = "new_datetimevalue";
             //架构名称
             dateAttr.SchemaName = "new_datetimevalue";
             //显示中文名称
             dateAttr.DisplayName = new Label("DateTime字段", 2052);
             //描述
             dateAttr.Description = new Label("DateTime字段", 2052);
             //需求级别
             dateAttr.RequiredLevel = new AttributeRequiredLevelManagedProperty(AttributeRequiredLevel.None);
             //字段安全性
             dateAttr.IsSecured = false;
             //审核
             dateAttr.IsAuditEnabled = new BooleanManagedProperty(false);
             //IME模式
             dateAttr.ImeMode = ImeMode.Disabled;
             //日期格式
             //如果是2014-06-02 12:20:30  :  DateTimeFormat.DateAndTime
             dateAttr.Format = DateTimeFormat.DateAndTime;
             //如果是2014-06-02  :  DateTimeFormat.DateOnly
             //dateAttr.Format = DateTimeFormat.DateOnly;
             request.Attribute = dateAttr;

             service.Execute(request);
         }
    }