ImageUtility.TargaImage.LoadTGAFooterInfo C# (CSharp) Method

        private void LoadTGAFooterInfo(BinaryReader binReader)
        {
            if (binReader != null && binReader.BaseStream != null && binReader.BaseStream.Length > 0 && binReader.BaseStream.CanSeek == true)
                {

                    try
                    {
                        // set the cursor at the beginning of the signature string.
                        binReader.BaseStream.Seek((TargaConstants.FooterSignatureOffsetFromEnd * -1), SeekOrigin.End);

                        // read the signature bytes and convert to ascii string
                        string Signature = System.Text.Encoding.ASCII.GetString(binReader.ReadBytes(TargaConstants.FooterSignatureByteLength)).TrimEnd('\0');

                        // do we have a proper signature
                        if (string.Compare(Signature, TargaConstants.TargaFooterASCIISignature) == 0)
                        {
                            // this is a NEW targa file.
                            // create the footer
                            this.eTGAFormat = TGAFormat.NEW_TGA;

                            // set cursor to beginning of footer info
                            binReader.BaseStream.Seek((TargaConstants.FooterByteLength * -1), SeekOrigin.End);

                            // read the Extension Area Offset value
                            int ExtOffset = binReader.ReadInt32();

                            // read the Developer Directory Offset value
                            int DevDirOff = binReader.ReadInt32();

                            // skip the signature we have already read it.
                            binReader.ReadBytes(TargaConstants.FooterSignatureByteLength);

                            // read the reserved character
                            string ResChar = System.Text.Encoding.ASCII.GetString(binReader.ReadBytes(TargaConstants.FooterReservedCharByteLength)).TrimEnd('\0');

                            // set all values to our TargaFooter class
                            this.objTargaFooter.SetExtensionAreaOffset(ExtOffset);
                            this.objTargaFooter.SetDeveloperDirectoryOffset(DevDirOff);
                            this.objTargaFooter.SetSignature(Signature);
                            this.objTargaFooter.SetReservedCharacter(ResChar);
                        }
                        else
                        {
                            // this is not an ORIGINAL targa file.
                            this.eTGAFormat = TGAFormat.ORIGINAL_TGA;
                        }
                    }
                    catch ( Exception ex )
                    {
                        // clear all
                        this.ClearAll();
                        throw ex;
                    }
                }
                else
                {
                    this.ClearAll();
                    throw new Exception(@"Error loading file, could not read file from disk.");
                }
        }