C# 将数据从视图传递到操作方法时出现运行时错误

试图将数据从视图传递到操作后方法时，浏览器中出现运行时错误。 错误：

输入不是有效的Base-64字符串，因为它包含非Base-64字符、两个以上的填充字符或填充字符中的非法字符

这是我的行动方法：

MyContext db = new MyContext();
public ActionResult SaveGen(Enroll_Gen Enrollment,HttpPostedFileBase file)
{   
    int i = UploadDataInDataBase(file,Enrollment);
    if (i == 1)
    {
        return RedirectToAction("Index");
    }

    return RedirectToAction("Guardian");
}

public int UploadDataInDataBase(HttpPostedFileBase file, Enroll_Gen EnrollGEn)
{
    EnrollGEn.Photo = ConvertToBytes(file);
    var Enroll_Gen = new Enroll_Gen
    {
        AdmnNum = EnrollGEn.AdmnNum,
        Class = EnrollGEn.Class,
        Section = EnrollGEn.Section,
        AcademicYear_Batch = EnrollGEn.AcademicYear_Batch,
        DateOfAdmission=EnrollGEn.DateOfAdmission,
        RollNum =EnrollGEn.RollNum,
        Regt_Numb = EnrollGEn.Regt_Numb,
        Photo = EnrollGEn.Photo,
        FirstName=EnrollGEn.FirstName,
        MiddleName=EnrollGEn.MiddleName,
        LastName=EnrollGEn.LastName,
        DOB=EnrollGEn.DOB,
        Mobile=EnrollGEn.Mobile,
        Gender=EnrollGEn.Gender,
        Nationality=EnrollGEn.Nationality,
        Language=EnrollGEn.Language,
        Religion=EnrollGEn.Religion,
        BloodGroup=EnrollGEn.BloodGroup,
        Address=EnrollGEn.Address,
        Country=EnrollGEn.Country,
        State=EnrollGEn.State,
        City=EnrollGEn.City,
        PinCode=EnrollGEn.PinCode,
        WebUrl=EnrollGEn.WebUrl
    };
    db.Enroll_Gens.Add(Enroll_Gen);
    int i = db.SaveChanges();
    if (i == 1)
    {
        return 1;
    }
    else
    {
        return 0;
    }
}

public byte[] ConvertToBytes(HttpPostedFileBase image)
{
    byte[] imageBytes = null;
    BinaryReader reader = new BinaryReader(image.InputStream);
    imageBytes = reader.ReadBytes((int)image.ContentLength);
    return imageBytes;
}

这是模型类：

public partial class Enroll_Gen
{
    public Enroll_Gen()
    {
        this.Entrance = new HashSet<Entrance>();
        this.QualNAchi = new HashSet<QualNAchi>();
        this.Scholarship = new HashSet<Scholarship>();
    }

    [Key]
    public string AdmnNum { get; set; }
    public string Class { get; set; }
    public string Section { get; set; }
    public int AcademicYear_Batch { get; set; }
    public string DateOfAdmission { get; set; }
    public int RollNum { get; set; }
    public string Regt_Numb { get; set; }
    public byte[] Photo { get; set; }
    public string FirstName { get; set; }
    public string MiddleName { get; set; }
    public string LastName { get; set; }
    public string DOB { get; set; }
    public string Mobile { get; set; }
    public string Gender { get; set; }
    public string Nationality { get; set; }
    public string Language { get; set; }
    public string Religion { get; set; }
    public string BloodGroup { get; set; }
    public string Address { get; set; }
    public string Country { get; set; }
    public string State { get; set; }
    public string City { get; set; }
    public string PinCode { get; set; }
    public string WebUrl { get; set; }

    public virtual ICollection<Entrance> Entrance { get; set; }
    public virtual ICollection<QualNAchi> QualNAchi { get; set; }
    public virtual ICollection<Scholarship> Scholarship { get; set; }
}

公共部分类注册\u Gen
{
公开注册
{
this.entry=new HashSet（）；
this.QualNAchi=new HashSet（）；
this.Scholarship=newhashset（）；
}
[关键]
公共字符串AdmnNum{get；set；}
公共字符串类{get；set；}
公共字符串部分{get；set；}
公共int\u批处理{get；set；}
公共字符串DateOfAdministration{get；set；}
public int RollNum{get；set；}
公共字符串Regt_Numb{get；set；}
公共字节[]Photo{get；set；}
公共字符串名{get；set；}
公共字符串MiddleName{get；set；}
公共字符串LastName{get；set；}
公共字符串DOB{get；set；}
公共字符串Mobile{get；set；}
公共字符串{get；set；}
公共字符串{get；set；}
公共字符串语言{get；set；}
公共字符串{get；set；}
公共字符串BloodGroup{get；set；}
公共字符串地址{get；set；}
公共字符串国家{get；set；}
公共字符串状态{get；set；}
公共字符串City{get；set；}
公共字符串PinCode{get；set；}
公共字符串WebUrl{get；set；}
公共虚拟ICollection入口{get；set；}
公共虚拟ICollection QualNAchi{get；set；}
公共虚拟ICollection奖学金{get；set；}
}

您的操作参数看起来无效，您的操作参数中的

Enroll\u Gen Enrollment

是一个模型类，我正在从Enrollment中的view接收值