System.NullReferenceException: 'Object reference not set to

if (strFilePath == "")

{

if (ImageByteArrays.Length != 0)

ImageByteArrays = new byte[] { };

}

else

{

Image temp = new Bitmap(strFilePath);

MemoryStream strm = new MemoryStream();

temp.Save(strm, System.Drawing.Imaging.ImageFormat.Jpeg);

ImageByteArrays = strm.ToArray();

}

if (sqlcon.State == ConnectionState.Closed)

{

sqlcon.Open();

SqlCommand sqlcmd = new SqlCommand("UPDATE tblMobileProduct SET ProductName=@pname,Brand=@brand,ExpandalbeMemory=@expandablememory,OStype=@ostype,Depth=@depth,PakageKG=@pakagekg,Display=@display,CPUspeed=@cpuspeed,USBtype=@usbtype,SimSize=@simsize,MPtype=@mptype,CNtech=@cntech,BatCapacity=@batcapacity,ModelNum=@modelnum,Descrip=@descrip,nimages=@nimage,Images=@image WHERE ProductName=@pname", sqlcon);

sqlcmd.Parameters.AddWithValue("@pname", txtPname.Text.Trim());

sqlcmd.Parameters.AddWithValue("@brand", cmbBrand.Text.Trim());

sqlcmd.Parameters.AddWithValue("@expandablememory", txtExmem.Text.Trim());

sqlcmd.Parameters.AddWithValue("@ostype", cmbOStype.Text.Trim());

sqlcmd.Parameters.AddWithValue("@depth", txtDepth.Text.Trim());

sqlcmd.Parameters.AddWithValue("@pakagekg", txtPkg.Text.Trim());

sqlcmd.Parameters.AddWithValue("@display", txtDisplay.Text.Trim());

sqlcmd.Parameters.AddWithValue("@cpuspeed", txtCPUspeed.Text.Trim());

sqlcmd.Parameters.AddWithValue("@usbtype", txtUSBtype.Text.Trim());

sqlcmd.Parameters.AddWithValue("@simsize", txtSimSize.Text.Trim());

sqlcmd.Parameters.AddWithValue("@mptype", txtMPtype.Text.Trim());

sqlcmd.Parameters.AddWithValue("@cntech", txtCNtech.Text.Trim());

sqlcmd.Parameters.AddWithValue("@batcapacity", txtBatCapacity.Text.Trim());

sqlcmd.Parameters.AddWithValue("@modelnum", txtModelNum.Text.Trim());

sqlcmd.Parameters.AddWithValue("@descrip", txtDescription.Text.Trim());

sqlcmd.Parameters.AddWithValue("@nimage", txtImage.Text.Trim());

sqlcmd.Parameters.Add("@image", ImageByteArrays);

sqlcmd.ExecuteNonQuery();

sqlcon.Close();

MessageBox.Show("Updated Successfully!");

reset();

btnSave.Enabled = false;

btnAdd.Visible = false;

btnUpload.Enabled = true;