实体框架 {“指定的参数超出有效值的范围. 参数名称:名称”}

嗨，当我尝试将数据保存到表 [ir] 时出现错误。InspectionQCExceptionRuleConfig]

{"指定的参数超出有效范围 值。''r'参数名称： 名称"}

我不知道为什么，我正在尝试保存数据。但是，我能够从模型中检索数据。我粘贴了代码、上下文和域模型。如果有人知道他的.请告诉我..

          public InspectionQCExceptionRuleConfig                         SaveInspectionQCRules
            (InspectionQCExceptionRuleConfig inspectionruleconfig)
            {
                if (inspectionruleconfig != null)
                {
                    try
                    {
                        using (InspRulesData ctx = new InspRulesData())
                        {
                            inspectionruleconfig = ctx.UpdateGraph(inspectionruleconfig, map => map);
                            //ctx.InspectionQCExceptionRuleConfigs.Add(inspectionruleconfig);
                            ctx.SaveChanges();
                        }
                    }
                    catch (DbEntityValidationException ex)
                    {
                        Logging.LogError(ex);
                        throw;
                    }
                    catch (Exception ex)
                    {
                        Logging.LogError(ex);
                        throw;
                    }
                }
                return inspectionruleconfig;
            }

这是从实体框架生成的域模型

    namespace DomainModel.FSEntity.InspRules
    {
        using System;
        using System.Collections.Generic;
        using System.ComponentModel.DataAnnotations;
        using System.ComponentModel.DataAnnotations.Schema;
        using System.Data.Entity.Spatial;
        using CommonLib;
        [System.CodeDom.Compiler.GeneratedCode("EF", "6.1.0")]
        [Table("ir.InspectionQCExceptionRuleConfig")]
        public partial class InspectionQCExceptionRuleConfig : BaseDomainModel
        {
            [Key]
            [StringLength(50)]
            [DatabaseGenerated(DatabaseGeneratedOption.None)]
            public string ClientNumber { get; set; }
            public bool QCOrdered { get; set; }
            public bool DwellingType { get; set; }
            public bool VacantToOccupied { get; set; }
            public bool VacantToOccupiedWithActivePreservation { get; set; }
        }
    }

这是实体框架用来保存数据到表检查QCExceptionRuleConfig的上下文

        public partial class InspRulesData : CustomDbContext
        {

            public InspRulesData()
                : base("name=PlatformEntityData")
            {
                this.Configuration.LazyLoadingEnabled = false;
            }

 public virtual DbSet<InspectionQCExceptionRuleConfig>        InspectionQCExceptionRuleConfigs { get; set; }

            protected override void OnModelCreating(DbModelBuilder     modelBuilder)
            {
                modelBuilder.Entity<InspectionQCExceptionRuleConfig>()
                    .Property(e => e.ClientNumber)
                    .IsVariableLength()
                    .IsUnicode(false);
            }
        }