Проблема возникает при хранении данных типа varbinary из ASP.NET с#

---

Привет,

Здесь у меня есть таблица comlaintmaster в базе данных вместе с varbinary и многими другими полями.
Когда я собираюсь сохранить данные в эту таблицу, то она не работает.

Пожалуйста, помогите мне,

Спасибо

Что я уже пробовал:

Это моя структура таблицы

CREATE TABLE [dbo].[tblComplaintMaster](
	[complID] [int] IDENTITY(1,1) NOT NULL,
	[complNo] [varchar](20) NOT NULL,
	[FinYr] [varchar](30) NOT NULL,
	[complDate] [date] NOT NULL,
	[complNature] [varchar](50) NOT NULL,
	[product] [varchar](100) NOT NULL,
	[prodct_srno] [varchar](20) NOT NULL,
	[issue_id] [int] NOT NULL,
	[descr] [varchar](255) NOT NULL,
	[assignto] [varchar](50) NOT NULL,
	[reqby] [varchar](50) NOT NULL,
	[contact_no] [varchar](50) NOT NULL,
	[email] [varchar](50) NOT NULL,
	[reqLoc] [varchar](100) NOT NULL,
	[priority] [varchar](20) NOT NULL,
	[status] [varchar](20) NOT NULL,
	[fromtime] [time](7) NULL,
	[totime] [time](7) NULL,
	[ReassignTo] [varchar](50) NULL,
	[ReassignDT] [date] NULL,
	[reason] [varchar](100) NULL,
	[call_report] [varbinary](max) NULL,
	[content_type] [varchar](50) NULL
)

а это мой код

 string complNo = txtComplNo.Text;
            string finyr = "01-04-2018-31-03-2018";
            DateTime complDt = Convert.ToDateTime(txtComplaintDt.Text);
            string complNature = ddlComplList.SelectedValue;
            string product = ProductList.SelectedValue;
            string srno = srnoList.Text;
            string descr = txtDesc.Text;
            string assignto = AssignToList.SelectedValue;
            string reqBy = UserList.SelectedValue;
            string loc = txtReqLoc.Text;
            string priority = ddlPriorityList.SelectedValue;
            string fromTime = DateTime.Now.ToString("HH:mm:ss");

            string toTime = "";

string filename = Path.GetFileName(callReportFileUpload.PostedFile.FileName);
                    Stream str = callReportFileUpload.PostedFile.InputStream;
                    BinaryReader br = new BinaryReader(str);
                    Byte[] bytes = br.ReadBytes((int)str.Length);
                    string ext = Path.GetExtension(filename);
                    string contentType = String.Empty;

                    //Set the contenttype based on File Extension
                    switch (ext)
                    {
                        case ".doc":
                            contentType = "application/vnd.ms-word";
                            break;
                        case ".docx":
                            contentType = "application/vnd.ms-word";
                            break;
                        case ".xls":
                            contentType = "application/vnd.ms-excel";
                            break;
                        case ".xlsx":
                            contentType = "application/vnd.ms-excel";
                            break;
                        case ".jpg":
                            contentType = "image/jpg";
                            break;
                        case ".png":
                            contentType = "image/png";
                            break;
                        case ".gif":
                            contentType = "image/gif";
                            break;
                        case ".pdf":
                            contentType = "application/pdf";
                            break;
                    }




                    SqlConnection con = null; ;
                    SqlCommand cmd;
                    SqlDataReader dr;
                    try
                    {

                        con = new SqlConnection(ConfigurationManager.ConnectionStrings["CRMConnection"].ConnectionString);
                        int issueid=Convert.ToInt32(issueList.SelectedValue);
                        string contact=txtContactNo.Text;
                        string email=txtEmail.Text;
                        //string qry = "insert into tblComplaintMaster values('" + complNo + "','" + finyr + "',Convert(Date,'" + complDt + "'),'" + complNature + "','" + product + "','" + srno + "',"+issueid+",'" + descr + "','" + assignto + "','" + reqBy + "','"+contact+"','"+email+"','" + loc + "','" + priority + "','" + txtStatus.Text + "','" + fromTime + "','" + toTime + "',null,null,null,'"+bytes.ToString()+"','"+contentType+"')";
                        //string qry = "insert into tblComplaintMaster(complNo,FinYr,complDate,complNature,product,prodct_srno,issue_id ,descr,assignto,reqby,contact_no,email,reqLoc,priority,status,fromtime,totime,ReassignTo,ReassignDT,reason,call_report,content_type) values (@complNo,@FinYr,@complDate,@complNature,@product,@prodct_srno,@issue_id ,@descr,@assignto,@reqby,@contact_no,@email,@reqLoc,@priority,@status,@fromtime,@totime,@ReassignTo,@ReassignDT,@reason,@call_report,@content_type)";                            
                        cmd = new SqlCommand("insert into tblComplaintMaster(complNo,FinYr,complDate,complNature,product,prodct_srno,issue_id ,descr,assignto,reqby,contact_no,email,reqLoc,priority,status,fromtime,totime,ReassignTo,ReassignDT,reason,call_report,content_type) values (@complNo,@FinYr,@complDate,@complNature,@product,@prodct_srno,@issue_id ,@descr,@assignto,@reqby,@contact_no,@email,@reqLoc,@priority,@status,@fromtime,@totime,@ReassignTo,@ReassignDT,@reason,@call_report,@content_type)");
                        cmd.Parameters.AddWithValue("@complNo", complNo);
                        cmd.Parameters.AddWithValue("@FinYr", finyr);
                        cmd.Parameters.AddWithValue("@complDate", SqlDbType.Date).Value = txtComplaintDt.Text;
                        cmd.Parameters.AddWithValue("@complNature", complNature);
                        cmd.Parameters.AddWithValue("@product", product);
                        cmd.Parameters.AddWithValue("@prodct_srno", srno);
                        cmd.Parameters.AddWithValue("@issue_id", issueid);
                        cmd.Parameters.AddWithValue("@descr", descr);
                        cmd.Parameters.AddWithValue("@assignto", assignto);
                        cmd.Parameters.AddWithValue("@reqby", reqBy);
                        cmd.Parameters.AddWithValue("@contact_no", contact);
                        cmd.Parameters.AddWithValue("@email", email);
                        cmd.Parameters.AddWithValue("@reqLoc", loc);
                        cmd.Parameters.AddWithValue("@priority", priority);
                        cmd.Parameters.AddWithValue("@status", txtStatus.Text);
                        cmd.Parameters.AddWithValue("@fromtime", fromTime);
                        cmd.Parameters.AddWithValue("@totime", toTime);
                        cmd.Parameters.AddWithValue("@ReassignTo", null);
                        cmd.Parameters.AddWithValue("@ReassignDT", null);
                        cmd.Parameters.AddWithValue("@reason", null);
                        cmd.Parameters.AddWithValue("@call_report", bytes);
                        cmd.Parameters.AddWithValue("@content_type", contentType);
                        

                        //cmd.Parameters.AddWithValue("@report", SqlDbType.VarBinary).Value = bytes;
                        //cmd.Parameters.AddWithValue("@call_report", bytes);
                       // cmd = new SqlCommand(qry);
                        Response.Write(cmd.CommandText);
                        con.Open();
                        cmd.Connection = con;

                        int result = cmd.ExecuteNonQuery();

                        if (result > 0)
                        {
                            ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Message", "alert('Record Save')", true);
                            ResetAll();
                        }
                        else
                        {
                            ScriptManager.RegisterClientScriptBlock(this, this.GetType(), "Message", "alert('did not Save')", true);
                        }

проблема в том, что он не запускает никаких ошибок или исключений, но запись также не сохраняется.
Пожалуйста, помогите мне.

---