求助！(急)

             set
             {
                 _CategoryId = CategoryId;
             }
         }
         private string _ImageName;
         public string ImageName
         {
             get
             {
                 return _ImageName;
             }
             set
             {
                 _ImageName = ImageName;
             }
         }
         private byte[] _ImageInfo;
         public byte[] ImageInfo
         {
             get
             {
                 return _ImageInfo;
             }
             set
             {
                 _ImageInfo = ImageInfo;
             }
         }
         private DateTime _ImageDate;
         public DateTime ImageDate
         {
             get
             {
                 return _ImageDate;
             }
             set
             {


                 _ImageDate = ImageDate;
             }
         }
     }
}
Default3.cs
protected void Page_Load(object sender, EventArgs e)
     {
         calendar myCalendar = new calendar();
         myCalendar.CreateCalendar(this.Page);
         myCalendar.SetCalendar(this.TextBox2);
     }
     protected void Button1_Click(object sender, EventArgs e)
     {
         string strFilePathName = FileUpload1.PostedFile.FileName;
         string strFileName = Path.GetFileName(strFilePathName);
         int FileLength = FileUpload1.PostedFile.ContentLength;
         if (FileLength <= 0)
         {
             Utility.AlertMsg(this.Page,"图片文件不存在！");
             return;
         }
        try
        {
             Byte[] FileByteArray = new Byte[FileLength];
             Stream StreamObject = FileUpload1.PostedFile.InputStream;
             StreamObject.Read(FileByteArray, 0, FileLength);
             Images images = new Images();
             images.CategoryId = Convert.ToInt32(DropDownList1.SelectedValue);
             images.ImageName = TextBox1.Text;
             images.ImageInfo = FileByteArray;
             images.ImageDate = DateTime.Parse(TextBox2.Text);
            
             ImagesBusiness imagesBusiness = new ImagesBusiness();
             if (imagesBusiness.AddImages(images))
             {
               Utility.AlertMsg(this.Page, "信息添加成功！");


             }
             else
             {
                 Utility.AlertMsg(this.Page, "信息添加失败！");
             }
         }
         catch
         {
             Utility.AlertMsg(this.Page,"图片文件读取错误！");
         }
     }
存储过程:
ALTER PROCEDURE dbo.Images_Add
(
   
    @CategoryId int,
    @ImageName nvarchar(100),
    @ImageInfo image,
    @ImageDate datetime
)
AS
     BEGIN
       BEGIN TRY
         INSERT INTO Images(
          
            CategoryId,
            ImageName,
            ImageInfo,
            ImageDate
         )
         VALUES(
           
            @CategoryId,
            @ImageName,
            @ImageInfo,
            @ImageDate
         )
         RETURN 0
       END TRY
       BEGIN CATCH
         RETURN ERROR_NUMBER()
       END CATCH
     END
数据写不进去，请问哪里出错了！