从PowerDesigner表字段的Name到EF实体类属性的Display Name（根据PowerDesigner生成EF实体类中文注释和验证元数据）

第一步：将PowerDesigner表字段的中文Name填入Comment中：工具-Execute Commands-Edit/Run Script...

public string Property(EdmProperty edmProperty)
{
string doc = "";
if (edmProperty.Documentation != null)
{
doc = string.Format(
CultureInfo.InvariantCulture,
"\n\t\t/// <summary>\n\t\t/// {0} - {1}\n\t\t/// </summary>\n\t\t",
edmProperty.Documentation.Summary ?? "",
edmProperty.Documentation.LongDescription ?? "");

doc += string.Format(
CultureInfo.InvariantCulture,
"[Display(Name = \"{0}\")]\n\t\t",
edmProperty.Documentation.Summary.Replace('(', '_').Replace(')', '_').Replace('（', '_').Replace('）', '_').Replace(" ", "") ?? "",
edmProperty.Documentation.LongDescription ?? "");
}

if (!edmProperty.Nullable)
{
doc += "[Required(ErrorMessage = \"您需要填写{0}！\")]\n\t\t";
}

var maxLengthFacet = (Facet)edmProperty.TypeUsage.Facets.SingleOrDefault(f => f.Name == "MaxLength");
if(maxLengthFacet != null && !maxLengthFacet.IsUnbounded)
{
doc += "[StringLength("+ maxLengthFacet.Value +", ErrorMessage = \"{0}长度不能超过"+ maxLengthFacet.Value +"\")]\n\t\t";
}

return doc + string.Format(
CultureInfo.InvariantCulture,
"{0} {1} {2} {{ {3}get; {4}set; }}",
Accessibility.ForProperty(edmProperty),
_typeMapper.GetTypeName(edmProperty.TypeUsage),
_code.Escape(edmProperty),
_code.SpaceAfter(Accessibility.ForGetter(edmProperty)),
_code.SpaceAfter(Accessibility.ForSetter(edmProperty)));
}

public string NavigationProperty(NavigationProperty navigationProperty)
{
var endType = _typeMapper.GetTypeName(navigationProperty.ToEndMember.GetEntityType());
string doc = "";
if (navigationProperty.Documentation != null)
{
doc = string.Format(
CultureInfo.InvariantCulture,
"\n\t\t/// <summary>\n\t\t/// {0} - {1}\n\t\t/// </summary>\n\t\t",
navigationProperty.Documentation.Summary ?? "",
navigationProperty.Documentation.LongDescription ?? "");
}

return doc + string.Format(
CultureInfo.InvariantCulture,
"{0} {1} {2} {{ {3}get; {4}set; }}",
AccessibilityAndVirtual(Accessibility.ForProperty(navigationProperty)),
navigationProperty.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ? ("ICollection<" + endType + ">") : endType,
_code.Escape(navigationProperty),
_code.SpaceAfter(Accessibility.ForGetter(navigationProperty)),
_code.SpaceAfter(Accessibility.ForSetter(navigationProperty)));
}

Model1.tt Property段

效果：

//------------------------------------------------------------------------------
// <auto-generated>
//    此代码是根据模板生成的。
//
//    手动更改此文件可能会导致应用程序中发生异常行为。
//    如果重新生成代码，则将覆盖对此文件的手动更改。
// </auto-generated>
//------------------------------------------------------------------------------

namespace Models
{
using System.ComponentModel.DataAnnotations;
using System;
using System.Collections.Generic;

public partial class Custom
{

/// <summary>
/// 客户ID -
/// </summary>
[Display(Name = "客户ID")]
[Required(ErrorMessage = "您需要填写{0}！")]
public int CustomID { get; set; }

/// <summary>
/// 客户名称 -
/// </summary>
[Display(Name = "客户名称")]
[Required(ErrorMessage = "您需要填写{0}！")]
[StringLength(60, ErrorMessage = "{0}长度不能超过60")]
public string CustomName { get; set; }

参考：
http://www.iteye.com/topic/1138201 http://www.cnblogs.com/hhhh2010/p/5344256.html http://stackoverflow.com/questions/13931159/add-documentation-to-generated-code-in-entity-framework-model-first https://eftsqldocgenerator.codeplex.com/
Entity Framework Power Tools：https://visualstudiogallery.msdn.microsoft.com/72a60b14-1581-4b9b-89f2-846072eff19d/

谢谢小伙伴wwl、jxt