Asp.net mvc 4 如何在mvc中显示来自fluentapi映射的验证消息?

Asp.net mvc 4 如何在mvc中显示来自fluentapi映射的验证消息?,asp.net-mvc-4,entity-framework-5,Asp.net Mvc 4,Entity Framework 5,Fluent api映射: internal class ProjectMap :EntityTypeConfiguration<Project> { public ProjectMap() { HasKey(o => o.ProjectId); Property(p => p.ProjectId).HasDatabaseGeneratedOption(DatabaseGe

Fluent api映射:

 internal class ProjectMap :EntityTypeConfiguration<Project>
    {
            public ProjectMap()
        {
            HasKey(o => o.ProjectId);

            Property(p => p.ProjectId).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);

            Property(p => p.StartDate < p.ExpectedEndDate);

            ToTable(TableSettings.Projects, TableSettings.DefaultSchema);
        }
    }
内部类ProjectMap:EntityTypeConfiguration
{
公共项目地图()
{
HasKey(o=>o.projectd);
属性(p=>p.ProjectId).HasDatabaseGeneratedOption(DatabaseGeneratedOption.Identity);
属性(p=>p.StartDate
这里我想在startdate属性上显示错误消息。那么如何在客户端视图上显示它呢