how to store a resume data into sql table column resume_data(type-image)

private byte[] ResumeData;
public byte[] ResumeData_
{
    get { return ResumeData; }
    set { ResumeData = value; }
}

string Connstr=System.Configuration.ConfigurationManager.AppSettings["Connstr"].ToString();

public void Submit()
{

    SqlCommand Cmd = new SqlCommand();
    SqlConnection Conn = new SqlConnection(Connstr);
    Conn.Open();
    Cmd.Connection = Conn;
    Cmd.CommandType = CommandType.StoredProcedure;
    Cmd.CommandText = "SP_Insert_Joinee";

    Para1 = new SqlParameter();
    Para1.ParameterName = "@ResumeData";
    Para1.SqlDbType = SqlDbType.Image;
    Para1.Value = ResumeData;
    Cmd.Parameters.Add(Para1);
    Cmd.ExecuteNonQuery();
}

public Document FileToByteArray(string fileName)
       {
           byte[] fileContent = null;

           System.IO.FileStream fs = new System.IO.FileStream(fileName, System.IO.FileMode.Open, System.IO.FileAccess.Read);
           System.IO.BinaryReader binaryReader = new System.IO.BinaryReader(fs);
           long byteLength = new System.IO.FileInfo(fileName).Length;
           fileContent = binaryReader.ReadBytes((Int32)byteLength);
           fs.Close();
           fs.Dispose();
           binaryReader.Close();
           Document objDoc = new Document();
           objDoc.DocName = fileName;
           objDoc.DocContent = fileContent;
           return objDoc;
       }
      public class Document
      {
       public int DocId { get; set; }
       public string DocName { get; set; }
       public byte[] DocContent { get; set; }
      }

private void btnSubmit_Click(object sender, EventArgs e)
      {
              //many statements

              Document objDoc = new Document();
              objDoc.DocContent = Attachmnt;//attachment defined as byte[] Attachment;
              objEntity.ResumeData_ = objDoc.DocContent;
              objEntity.Submit();
              MessageBox.Show("Records Added Successfully!");


          this.Close();
      }