open password protected pdf using c# : Add text pdf file Library control component asp.net web page windows mvc abs-guide76-part1865

"${LongOpts}" --name "${ScriptName}" -- "${@}")
if [[ ($? -ne 0) || ($# -eq 0) ]]; then
echo "Usage: ${ScriptName} [-dhlt] {OPTION...}"
exit $E_OPTERR
fi
eval set -- "${inputOptions}"
while true; do
case "${1}" in
--aoption | -a)  # Argument found.
echo "Option [$1]"
;;
--debug | -d)    # Enable informational messages.
echo "Option [$1] Debugging enabled"
;;
--file | -f)     #  Check for optional argument.
case "$2" in   #+ Double colon is optional argument.
"")          #  Not there.
echo "Option [$1] Use default"
shift
;;
*) # Got it
echo "Option [$1] Using input [$2]"
shift
;;
esac
DoSomething
;;
--log | -l) # Enable Logging.
echo "Option [$1] Logging enabled"
;;
--test | -t) # Enable testing.
echo "Option [$1] Testing enabled"
;;
--help | -h)
echo "Option [$1] Display help"
break
;;
--)   # Done! $# is argument number for "--", $@ is "--"
echo "Option [$1] Dash Dash"
break
;;
*)
echo "Major internal error!"
exit 8
;;
esac
echo "Number of arguments: [$#]"
shift
Advanced Bash-Scripting Guide
Appendix A. Contributed Scripts
755
Add text pdf file - insert text into PDF content in C#.net, ASP.NET, MVC, Ajax, WinForms, WPF
XDoc.PDF for .NET, providing C# demo code for inserting text to PDF file
how to add text field to pdf; add text to pdf without acrobat
Add text pdf file - VB.NET PDF insert text library: insert text into PDF content in vb.net, ASP.NET, MVC, Ajax, WinForms, WPF
Providing Demo Code for Adding and Inserting Text to PDF File Page in VB.NET Program
how to add text fields in a pdf; how to add text to a pdf file in reader
done
shift
 }
exit
Example A-52. Cycling through all the possible color backgrounds
#!/bin/bash
# show-all-colors.sh
# Displays all 256 possible background colors, using ANSI escape sequences.
# Author: Chetankumar Phulpagare
# Used in ABS Guide with permission.
T1=8
T2=6
T3=36
offset=0
for num1 in {0..7}
do {
for num2 in {0,1}
do {
shownum=`echo "$offset + $T1 * ${num2} + $num1" | bc`
echo -en "\E[0;48;5;${shownum}m color ${shownum} \E[0m"
}
done
echo
}
done
offset=16
for num1 in {0..5}
do {
for num2 in {0..5}
do {
for num3 in {0..5}
do {
shownum=`echo "$offset + $T2 * ${num3} \
+ $num2 + $T3 * ${num1}" | bc`
echo -en "\E[0;48;5;${shownum}m color ${shownum} \E[0m"
}
done
echo
}
done
}
done
offset=232
for num1 in {0..23}
do {
shownum=`expr $offset + $num1`
echo -en "\E[0;48;5;${shownum}m ${shownum}\E[0m"
}
done
echo
Advanced Bash-Scripting Guide
Appendix A. Contributed Scripts
756
VB.NET PDF Password Library: add, remove, edit PDF file password
This VB.NET example shows how to add PDF file password with access permission setting. passwordSetting.IsAssemble = True ' Add password to PDF file.
adding text to pdf document; add text field to pdf
VB.NET PDF Text Extract Library: extract text content from PDF
this advanced PDF Add-On, developers are able to extract target text content from source PDF document and save extracted text to other file formats through VB
add text pdf file acrobat; add text pdf acrobat
Example A-53. Morse Code Practice
#!/bin/bash
# sam.sh, v. .01a
# Still Another Morse (code training script)
# With profuse apologies to Sam (F.B.) Morse.
# Author: Mendel Cooper
# License: GPL3
# Reldate: 05/25/11
# Morse code training script.
# Converts arguments to audible dots and dashes.
# Note: lowercase input only at this time.
# Get the wav files from the source tarball:
# http://bash.deta.in/abs-guide-latest.tar.bz2
DOT='soundfiles/dot.wav'
DASH='soundfiles/dash.wav'
# Maybe move soundfiles to /usr/local/sounds?
LETTERSPACE=300000  # Microseconds.
WORDSPACE=980000
# Nice and slow, for beginners. Maybe 5 wpm?
EXIT_MSG="May the Morse be with you!"
E_NOARGS=75         # No command-line args?
declare -A morse    # Associative array!
# ======================================= #
morse[a]="dot; dash"
morse[b]="dash; dot; dot; dot"
morse[c]="dash; dot; dash; dot"
morse[d]="dash; dot; dot"
morse[e]="dot"
morse[f]="dot; dot; dash; dot"
morse[g]="dash; dash; dot"
morse[h]="dot; dot; dot; dot"
morse[i]="dot; dot;"
morse[j]="dot; dash; dash; dash"
morse[k]="dash; dot; dash"
morse[l]="dot; dash; dot; dot"
morse[m]="dash; dash"
morse[n]="dash; dot"
morse[o]="dash; dash; dash"
morse[p]="dot; dash; dash; dot"
morse[q]="dash; dash; dot; dash"
morse[r]="dot; dash; dot"
morse[s]="dot; dot; dot"
morse[t]="dash"
morse[u]="dot; dot; dash"
morse[v]="dot; dot; dot; dash"
morse[w]="dot; dash; dash"
morse[x]="dash; dot; dot; dash"
morse[y]="dash; dot; dash; dash"
morse[z]="dash; dash; dot; dot"
morse[0]="dash; dash; dash; dash; dash"
morse[1]="dot; dash; dash; dash; dash"
morse[2]="dot; dot; dash; dash; dash"
Advanced Bash-Scripting Guide
Appendix A. Contributed Scripts
757
C# PDF Text Extract Library: extract text content from PDF file in
How to C#: Extract Text Content from PDF File. Add necessary references: RasterEdge.Imaging.Basic.dll. RasterEdge.Imaging.Basic.Codec.dll.
adding text to pdf in preview; add text field pdf
C# PDF Password Library: add, remove, edit PDF file password in C#
This example shows how to add PDF file password with access permission setting. passwordSetting.IsAssemble = true; // Add password to PDF file.
how to add text box in pdf file; how to add text to a pdf document
morse[3]="dot; dot; dot; dash; dash"
morse[4]="dot; dot; dot; dot; dash"
morse[5]="dot; dot; dot; dot; dot"
morse[6]="dash; dot; dot; dot; dot"
morse[7]="dash; dash; dot; dot; dot"
morse[8]="dash; dash; dash; dot; dot"
morse[9]="dash; dash; dash; dash; dot"
# The following must be escaped or quoted.
morse[?]="dot; dot; dash; dash; dot; dot"
morse[.]="dot; dash; dot; dash; dot; dash"
morse[,]="dash; dash; dot; dot; dash; dash"
morse[/]="dash; dot; dot; dash; dot"
morse[\@]="dot; dash; dash; dot; dash; dot"
# ======================================= #
play_letter ()
{
eval ${morse[$1]}   # Play dots, dashes from appropriate sound files.
# Why is 'eval' necessary here?
usleep $LETTERSPACE # Pause in between letters.
}
extract_letters ()
                    # Slice string apart, letter by letter.
local pos=0         # Starting at left end of string.
local len=1         # One letter at a time.
strlen=${#1}
while [ $pos -lt $strlen ]
do
letter=${1:pos:len}
#      ^^^^^^^^^^^^    See Chapter 10.1.
play_letter $letter
echo -n "*"       #    Mark letter just played.
((pos++))
done
}
######### Play the sounds ############
dot()  { aplay "$DOT" 2&>/dev/null;  }
dash() { aplay "$DASH" 2&>/dev/null; }
######################################
no_args ()
{
declare -a usage
usage=( $0 word1 word2 ... )
echo "Usage:"; echo
echo ${usage[*]}
for index in 0 1 2 3
do
extract_letters ${usage[index]}     
usleep $WORDSPACE
echo -n " "     # Print space between words.
done
  echo "Usage: $0 word1 word2 ... "
echo; echo
}
# int main()
Advanced Bash-Scripting Guide
Appendix A. Contributed Scripts
758
C# PDF File & Page Process Library SDK for C#.net, ASP.NET, MVC
Read: PDF Text Extract; C# Read: PDF Image Extract; C# Write: Insert text into PDF; C# Write: Add Image to PDF; C# Protect: Add Password
add text in pdf file online; acrobat add text to pdf
C# PDF insert image Library: insert images into PDF in C#.net, ASP
using RasterEdge.Imaging.Basic; using RasterEdge.XDoc.PDF; Have a try with this sample C#.NET code to add an image to the first page of PDF file.
adding text fields to a pdf; add text to pdf reader
# {
clear                 # Clear the terminal screen.
echo "            SAM"
echo "Still Another Morse code trainer"
echo "    Author: Mendel Cooper"
echo; echo;
if [ -z "$1" ]
then
no_args
echo; echo; echo "$EXIT_MSG"; echo
exit $E_NOARGS
fi
echo; echo "$*"       # Print text that will be played.
until [ -z "$1" ]
do
extract_letters $1
shift           # On to next word.
usleep $WORDSPACE
echo -n " "     # Print space between words.
done
echo; echo; echo "$EXIT_MSG"; echo
exit 0
# }
 Exercises:
 ---------
 1) Have the script accept either lowercase or uppercase words
#+    as arguments. Hint: Use 'tr' . . .
 2) Have the script optionally accept input from a text file.
Example A-54. Base64 encoding/decoding
#!/bin/bash
# base64.sh: Bash implementation of Base64 encoding and decoding.
#
# Copyright (c) 2011 vladz <vladz@devzero.fr>
# Used in ABSG with permission (thanks!).
#
 Encode or decode original Base64 (and also Base64url)
#+ from STDIN to STDOUT.
#
   Usage:
#
   Encode
   $ ./base64.sh < binary-file > binary-file.base64
   Decode
   $ ./base64.sh -d < binary-file.base64 > binary-file
#
# Reference:
#
   [1]  RFC4648 - "The Base16, Base32, and Base64 Data Encodings"
        http://tools.ietf.org/html/rfc4648#section-5
# The base64_charset[] array contains entire base64 charset,
Advanced Bash-Scripting Guide
Appendix A. Contributed Scripts
759
VB.NET PDF File Compress Library: Compress reduce PDF size in vb.
Also able to uncompress PDF file in VB.NET programs. Offer flexible and royalty-free developing library license for VB.NET programmers to compress PDF file.
how to add text box to pdf document; how to insert text into a pdf with acrobat
VB.NET PDF insert image library: insert images into PDF in vb.net
try with this sample VB.NET code to add an image As String = Program.RootPath + "\\" 1.pdf" Dim doc New PDFDocument(inputFilePath) ' Get a text manager from
how to insert text box in pdf; how to add text to pdf
# and additionally the character "=" ...
base64_charset=( {A..Z} {a..z} {0..9} + / = )
# Nice illustration of brace expansion.
 Uncomment the ### line below to use base64url encoding instead of
#+ original base64.
### base64_charset=( {A..Z} {a..z} {0..9} - _ = )
 Output text width when encoding
#+ (64 characters, just like openssl output).
text_width=64
function display_base64_char {
 Convert a 6-bit number (between 0 and 63) into its corresponding values
#+ in Base64, then display the result with the specified text width.
printf "${base64_charset[$1]}"; (( width++ ))
(( width % text_width == 0 )) && printf "\n"
}
function encode_base64 {
# Encode three 8-bit hexadecimal codes into four 6-bit numbers.
#    We need two local int array variables:
#    c8[]: to store the codes of the 8-bit characters to encode
#    c6[]: to store the corresponding encoded values on 6-bit
declare -a -i c8 c6
#  Convert hexadecimal to decimal.
c8=( $(printf "ibase=16; ${1:0:2}\n${1:2:2}\n${1:4:2}\n" | bc) )
#  Let's play with bitwise operators
#+ (3x8-bit into 4x6-bits conversion).
(( c6[0] = c8[0] >> 2 ))
(( c6[1] = ((c8[0] &  3) << 4) | (c8[1] >> 4) ))
# The following operations depend on the c8 element number.
case ${#c8[*]} in 
3) (( c6[2] = ((c8[1] & 15) << 2) | (c8[2] >> 6) ))
(( c6[3] = c8[2] & 63 )) ;;
2) (( c6[2] = (c8[1] & 15) << 2 ))
(( c6[3] = 64 )) ;;
1) (( c6[2] = c6[3] = 64 )) ;;
esac
for char in ${c6[@]}; do
display_base64_char ${char}
done
}
function decode_base64 {
# Decode four base64 characters into three hexadecimal ASCII characters.
#  c8[]: to store the codes of the 8-bit characters
#  c6[]: to store the corresponding Base64 values on 6-bit
declare -a -i c8 c6
# Find decimal value corresponding to the current base64 character.
for current_char in ${1:0:1} ${1:1:1} ${1:2:1} ${1:3:1}; do
[ "${current_char}" = "=" ] && break
position=0
while [ "${current_char}" != "${base64_charset[${position}]}" ]; do
(( position++ ))
done
Advanced Bash-Scripting Guide
Appendix A. Contributed Scripts
760
C# PDF File Split Library: Split, seperate PDF into multiple files
page of your defined page number which starts from 0. For example, your original PDF file contains 4 pages. C# DLLs: Split PDF Document. Add necessary references
how to add text to pdf document; how to insert pdf into email text
C# PDF File Merge Library: Merge, append PDF files in C#.net, ASP.
document splitting, PDF page reordering and PDF page image and text extraction Add necessary references In addition, C# users can append a PDF file to the end of
add text to pdf file online; adding text pdf files
c6=( ${c6[*]} ${position} )
done
#  Let's play with bitwise operators
#+ (4x8-bit into 3x6-bits conversion).
(( c8[0] = (c6[0] << 2) | (c6[1] >> 4) ))
# The next operations depends on the c6 elements number.
case ${#c6[*]} in
3) (( c8[1] = ( (c6[1] & 15) << 4) | (c6[2] >> 2) ))
(( c8[2] = (c6[2] & 3) << 6 )); unset c8[2] ;;
4) (( c8[1] = ( (c6[1] & 15) << 4) | (c6[2] >> 2) ))
(( c8[2] = ( (c6[2] &  3) << 6) |  c6[3] )) ;;
esac
for char in ${c8[*]}; do
printf "\x$(printf "%x" ${char})"
done
}
# main ()
if [ "$1" = "-d" ]; then   # decode
# Reformat STDIN in pseudo 4x6-bit groups.
content=$(cat - | tr -d "\n" | sed -r "s/(.{4})/\1 /g")
for chars in ${content}; do decode_base64 ${chars}; done
else
# Make a hexdump of stdin and reformat in 3-byte groups.
content=$(cat - | xxd -ps -u | sed -r "s/(\w{6})/\1 /g" |
tr -d "\n")
for chars in ${content}; do encode_base64 ${chars}; done
echo
fi
Example A-55. Inserting text in a file using sed
#!/bin/bash
 Prepends a string at a specified line
#+ in files with names ending in "sample"
#+ in the current working directory.
 000000000000000000000000000000000000
 This script overwrites files!
 Be careful running it in a directory
#+ where you have important files!!!
 000000000000000000000000000000000000
 Create a couple of files to operate on ...
 01sample
 02sample
 ... etc.
 These files must not be empty, else the prepend will not work.
lineno=1            # Append at line 1 (prepend).
Advanced Bash-Scripting Guide
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761
filespec="*sample"  # Filename pattern to operate on.
string=$(whoami)    # Will set your username as string to insert.
# It could just as easily be any other string.
for file in $filespec # Specify which files to alter.
do #        ^^^^^^^^^
sed -i ""$lineno"i "$string"" $file
   ^^ -i option edits files in-place.
                ^ Insert (i) command.
echo ""$file" altered!"
done
echo "Warning: files possibly clobbered!"
exit 0
# Exercise:
# Add error checking to this script.
# It needs it badly.
Example A-56. The Gronsfeld Cipher
#!/bin/bash
# gronsfeld.bash
# License: GPL3
# Reldate 06/23/11
 This is an implementation of the Gronsfeld Cipher.
 It's essentially a stripped-down variant of the 
#+ polyalphabetic Vigenère Tableau, but with only 10 alphabets.
 The classic Gronsfeld has a numeric sequence as the key word,
#+ but here we substitute a letter string, for ease of use.
 Allegedly, this cipher was invented by the eponymous Count Gronsfeld
#+ in the 17th Century. It was at one time considered to be unbreakable.
 Note that this is ###not### a secure cipher by modern standards.
 Global Variables  #
Enc_suffix="29379"   #  Encrypted text output with this 5-digit suffix. 
 This functions as a decryption flag,
#+ and when used to generate passwords adds security.
Default_key="gronsfeldk"
 The script uses this if key not entered below
 (at "Keychain").
 Change the above two values frequently
#+ for added security.
GROUPLEN=5           #  Output in groups of 5 letters, per tradition.
alpha1=( abcdefghijklmnopqrstuvwxyz )
alpha2=( {A..Z} )    #  Output in all caps, per tradition.
 Use   alpha2=( {a..z} )   for password generator.
wraplen=26           #  Wrap around if past end of alphabet.
dflag=               #  Decrypt flag (set if $Enc_suffix present).
E_NOARGS=76          #  Missing command-line args?
DEBUG=77             #  Debugging flag.
declare -a offsets   #  This array holds the numeric shift values for
#+ encryption/decryption.
########Keychain#########
key=  ### Put key here!!!
Advanced Bash-Scripting Guide
Appendix A. Contributed Scripts
762
# 10 characters!
#########################
# Function
: ()
{ # Encrypt or decrypt, depending on whether $dflag is set.
# Why ": ()" as a function name? Just to prove that it can be done.
local idx keydx mlen off1 shft
local plaintext="$1"
local mlen=${#plaintext}
for (( idx=0; idx<$mlen; idx++ ))
do
let "keydx = $idx % $keylen"
shft=${offsets[keydx]}
if [ -n "$dflag" ]
then                  # Decrypt!
let "off1 = $(expr index "${alpha1[*]}" ${plaintext:idx:1}) - $shft"
# Shift backward to decrypt.
else                  # Encrypt!
let "off1 = $(expr index "${alpha1[*]}" ${plaintext:idx:1}) + $shft"
# Shift forward to encrypt.
test $(( $idx % $GROUPLEN)) = 0 && echo -n " "  # Groups of 5 letters.
#  Comment out above line for output as a string without whitespace,
#+ for example, if using the script as a password generator.
fi
((off1--))   # Normalize. Why is this necessary?
if [ $off1 -lt 0 ]
then     # Catch negative indices.
let "off1 += $wraplen"
fi
((off1 %= $wraplen))   # Wrap around if past end of alphabet.
echo -n "${alpha2[off1]}"
done
if [ -z "$dflag" ]
then
echo " $Enc_suffix"
  echo "$Enc_suffix"  # For password generator.
else
echo
fi
} # End encrypt/decrypt function.
# int main () {
# Check for command-line args.
if [ -z "$1" ]
then
echo "Usage: $0 TEXT TO ENCODE/DECODE"
exit $E_NOARGS
Advanced Bash-Scripting Guide
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763
fi
if [ ${!#} == "$Enc_suffix" ]
   ^^^^^ Final command-line arg.
then
dflag=ON
echo -n "+"           # Flag decrypted text with a "+" for easy ID.
fi
if [ -z "$key" ]
then
key="$Default_key"    # "gronsfeldk" per above.
fi
keylen=${#key}
for (( idx=0; idx<$keylen; idx++ ))
do  # Calculate shift values for encryption/decryption.
offsets[idx]=$(expr index "${alpha1[*]}" ${key:idx:1})   # Normalize.
((offsets[idx]--))  #  Necessary because "expr index" starts at 1,
#+ whereas array count starts at 0.
# Generate array of numerical offsets corresponding to the key.
# There are simpler ways to accomplish this.
done
args=$(echo "$*" | sed -e 's/ //g' | tr A-Z a-z | sed -e 's/[0-9]//g')
# Remove whitespace and digits from command-line args.
# Can modify to also remove punctuation characters, if desired.
# Debug:
# echo "$args"; exit $DEBUG
: "$args"               # Call the function named ":".
# : is a null operator, except . . . when it's a function name!
exit $?    # } End-of-script
  **************************************************************   #
  This script can function as a  password generator,
#+  with several minor mods, see above.
  That would allow an easy-to-remember password, even the word
#+ "password" itself, which encrypts to vrgfotvo29379
#+  a fairly secure password not susceptible to a dictionary attack.
  Or, you could use your own name (surely that's easy to remember!).
  For example, Bozo Bozeman encrypts to hfnbttdppkt29379.
  **************************************************************   #
Example A-57. Bingo Number Generator
#!/bin/bash
# bingo.sh
# Bingo number generator
# Reldate 20Aug12, License: Public Domain
#######################################################################
# This script generates bingo numbers.
# Hitting a key generates a new number.
# Hitting 'q' terminates the script.
# In a given run of the script, there will be no duplicate numbers.
# When the script terminates, it prints a log of the numbers generated.
Advanced Bash-Scripting Guide
Appendix A. Contributed Scripts
764
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