我将所有Crystal Reports保存在一个文件夹中：

VOUCHERS-->SALE-->BILLFORMATS

例如：第一份报告的位置是：

VOUCHERS-->SALE-->BILLFORMATS-->BillFormat1.rpt

Vegi_Manager是根名称空间。
当我构建项目并尝试在代码中使用报表时，它抛出了一个错误：

Unable to find the report in the manifest resources

. cs文件是否有问题？
代码：

//------------------------------------------------------------------------------
// <auto-generated>
//     This code was generated by a tool.
//     Runtime Version:4.0.30319.1
//
//     Changes to this file may cause incorrect behavior and will be lost if
//     the code is regenerated.
// </auto-generated>
//------------------------------------------------------------------------------

namespace Vegi_Manager.VOUCHERS.SALE.BILLFORMATS {
    using System;
    using System.ComponentModel;
    using CrystalDecisions.Shared;
    using CrystalDecisions.ReportSource;
    using CrystalDecisions.CrystalReports.Engine;

    public class BillFormat1 : ReportClass {

        public BillFormat1() {
        }

        public override string ResourceName {
            get {
                return "BillFormat1.rpt";
            }
            set {
                // Do nothing
            }
        }

        public override bool NewGenerator {
            get {
                return true;
            }
            set {
                // Do nothing
            }
        }

        public override string FullResourceName {
            get {
                return "Vegi_Manager.VOUCHERS.SALE.BILLFORMATS.BillFormat1.rpt";
            }
            set {
                // Do nothing
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.CrystalReports.Engine.Section Section1 {
            get {
                return this.ReportDefinition.Sections[0];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.CrystalReports.Engine.Section Section2 {
            get {
                return this.ReportDefinition.Sections[1];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.CrystalReports.Engine.Section Section3 {
            get {
                return this.ReportDefinition.Sections[2];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.CrystalReports.Engine.Section Section4 {
            get {
                return this.ReportDefinition.Sections[3];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.CrystalReports.Engine.Section Section5 {
            get {
                return this.ReportDefinition.Sections[4];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmName {
            get {
                return this.DataDefinition.ParameterFields[0];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmJurisdiction {
            get {
                return this.DataDefinition.ParameterFields[1];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmPhoneNo {
            get {
                return this.DataDefinition.ParameterFields[2];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmMobileNo {
            get {
                return this.DataDefinition.ParameterFields[3];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmDetails {
            get {
                return this.DataDefinition.ParameterFields[4];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmAddress {
            get {
                return this.DataDefinition.ParameterFields[5];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmCity {
            get {
                return this.DataDefinition.ParameterFields[6];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmState {
            get {
                return this.DataDefinition.ParameterFields[7];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamFirmBankDetails {
            get {
                return this.DataDefinition.ParameterFields[8];
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public CrystalDecisions.Shared.IParameterField Parameter_ParamBillNo {
            get {
                return this.DataDefinition.ParameterFields[9];
            }
        }
    }

    [System.Drawing.ToolboxBitmapAttribute(typeof(CrystalDecisions.Shared.ExportOptions), "report.bmp")]
    public class CachedBillFormat1 : Component, ICachedReport {

        public CachedBillFormat1() {
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public virtual bool IsCacheable {
            get {
                return true;
            }
            set {
                // 
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public virtual bool ShareDBLogonInfo {
            get {
                return false;
            }
            set {
                // 
            }
        }

        [Browsable(false)]
        [DesignerSerializationVisibilityAttribute(System.ComponentModel.DesignerSerializationVisibility.Hidden)]
        public virtual System.TimeSpan CacheTimeOut {
            get {
                return CachedReportConstants.DEFAULT_TIMEOUT;
            }
            set {
                // 
            }
        }

        public virtual CrystalDecisions.CrystalReports.Engine.ReportDocument CreateReport() {
            BillFormat1 rpt = new BillFormat1();
            rpt.Site = this.Site;
            return rpt;
        }

        public virtual string GetCustomizedCacheKey(RequestContext request) {
            String key = null;
            // // The following is the code used to generate the default
            // // cache key for caching report jobs in the ASP.NET Cache.
            // // Feel free to modify this code to suit your needs.
            // // Returning key == null causes the default cache key to
            // // be generated.
            // 
            // key = RequestContext.BuildCompleteCacheKey(
            //     request,
            //     null,       // sReportFilename
            //     this.GetType(),
            //     this.ShareDBLogonInfo );
            return key;
        }
    }
}

有时我会将.cs文件中的命名空间更改为Vegi_Manager而不是Vegi_Manager. VOUCHERS. SALE. BILLFORMATS，它可以工作，但当项目再次编译时，它会恢复为Vegi_Manager. VOUCHERS. SALE. BILLFORMATS，并再次显示相同的错误。
是什么原因导致上述错误？