Crystal Report uses bar code and supports PDF export

C.r. Use a bar code,

1. Generate the barcode through the code39drawimagebord. CS class into a byte [] variable.

2. Save the byte [] variable to the image object in SQL Server.

3. Drag the image variable in the database to the Crystal Report.

OK done!

The barcode encoding rules in the format of code 39 are used here. To support other codes such as 128 encoding, you only need to add a new CS class and inherit idrawbarcode. CS.

Below isCode:

Statement of reference:

// Generate an image
Code39drawimagebord DR = new code39drawimagebord ("*" + shiporder. refnumber + "*");
Entity. barcodenumberimage = dr. getimagebytes ();

Base class:

Using system;
Using system. Collections. Generic;
Using system. IO;
Using system. LINQ;
Using system. text;
Using system. drawing;
Using system. Drawing. imaging;

Namespace shipfromherebusiness. Barcode
{
Public abstract class idrawbarcode
{
Protected virtual string bordrulename
{
Get {return string. Empty ;}
}

Protected virtual system. Collections. hashtable roles
{
Get {return new system. Collections. hashtable ();}
}

String drawstring;
Int width = 800; // The width of the canvas (computable)
Int Height = 36; // 1 CM
Int unitwidth = 1 ;//

Int currentlocation = 0;
Bool boolautolength = false;

Public idrawbarcode (string S, int intwidht, int intheight, int intstepwidth)
{
Drawstring = s;
Width = intwidht;
Height = intheight;
Unitwidth = intstepwidth;

}

Public idrawbarcode (string s)
{< br> drawstring = s;
boolautolength = true;
width = 30 + S. length * 18;
Height = 36;
unitwidth = 1;
}

Public Virtual byte [] getimagebytes ()
{
Bitmap Bm = new Bitmap (width, height );
Graphics G = graphics. fromimage (BM );
G. smoothingmode = system. Drawing. drawing2d. smoothingmode. default;
G. textrenderinghint = system. Drawing. Text. textrenderinghint. antialias;

// Canvas and edge settings
G. Clear (color. White );

G. drawrectangle (pens. white, 0, 0, width, height);
for (INT I = 0; I {< br> This. drawstring (drawstring [I]. tostring (), g);
}< br> return bitmap2bytes (BM);
}

Public Virtual void draw (system. Io. stream target)
{
Bitmap Bm = new Bitmap (width, height );
Graphics G = graphics. fromimage (BM );
G. smoothingmode = system. Drawing. drawing2d. smoothingmode. default;
G. textrenderinghint = system. Drawing. Text. textrenderinghint. antialias;

// Canvas and edge settings
G. Clear (color. White );

G. drawrectangle (pens. White, 0, 0, width, height );
For (INT I = 0; I <drawstring. length; I ++)
{
This. drawstring (drawstring [I]. tostring (), g );
}
BM. Save (target, imageformat. JPEG );
}

Private byte [] bitmap2bytes (Bitmap BM)
{
Memorystream STRM = new memorystream ();
BM. Save (STRM, imageformat. JPEG );
Return STRM. toarray ();

}
Protected virtual void drawstring (string S, graphics g)
{
System. Collections. hashtable hash = This. roles;
Object o = hash [s];
If (O = NULL) return;
Char [] chars = O. tostring (). tochararray ();
If (chars. length> 9) return;
Solidbrush blackbrush = new solidbrush (color. Black );
Solidbrush witebrush = new solidbrush (color. White );

For (INT I = 0; I <5; I ++)
{
// Draw the first 0 black bars
If (chars [I] = '0 ')
{
Rectangle RE1 = new rectangle (currentlocation, 0, unitwidth, height );
G. fillrectangle (blackbrush, RE1 );
Currentlocation + = unitwidth;
}
Else
{
Rectangle RE1 = new rectangle (currentlocation, 0, 3 * unitwidth, height );
G. fillrectangle (blackbrush, RE1 );
Currentlocation + = 3 * unitwidth;
}
// Draw 6th white stripes
If (I + 5) <9)
{
If (chars [I + 5] = '0 ')
{
Rectangle RE1 = new rectangle (currentlocation, 0, unitwidth, height );
G. fillrectangle (witebrush, RE1 );
Currentlocation + = unitwidth;
}
Else
{
Rectangle RE1 = new rectangle (currentlocation, 0, 3 * unitwidth, height );
G. fillrectangle (witebrush, RE1 );
Currentlocation + = 3 * unitwidth;
}
}
}
Rectangle re2 = new rectangle (currentlocation, 0, unitwidth, height );
G. fillrectangle (witebrush, re2 );
Currentlocation + = unitwidth;

}
}

}

Code 39 encoding rule class:

Using system;
Using system. Collections. Generic;
Using system. LINQ;
Using system. text;

Namespace shipfromherebusiness. Barcode
{
/**/
/**/
/**/
/// <Summary>
/// Code39drawimagebord abstract description
/// </Summary>
Public class code39drawimagebord: idrawbarcode
{
Private system. Collections. hashtable hash = new system. Collections. hashtable ();

Public code39drawimagebord (string S, int intwidht, int intheight, int intstepwidth): Base (S, intwidht, intheight, intstepwidth)
{
}

Public code39drawimagebord (string S)
: Base (s)
{
}

Protected override string bordrulename
{
Get {return "code39 ";}
}

Protected override system. Collections. hashtable roles
{
Get
{
If (hash. Count> 0) return hash;
Hash. Add ("0", "001100100 ");
Hash. Add ("1", "100010100 ");
Hash. Add ("2", "010010100 ");
Hash. Add ("3", "110000100 ");
Hash. Add ("4", "001010100 ");
Hash. Add ("5", "101000100 ");
Hashing. Add ("6", "011000100 ");
Hash. Add ("7", "000110100 ");

hash. add ("8", "100100100");
hash. add ("9", "010100100");
hash. add ("A", "100010010");
hash. add ("B", "010010010");
hash. add ("C", "110000010");
hash. add ("D", "001010010");
hash. add ("e", "101000010");

hash. add ("F", "011000010");
hash. add ("g", "000110010");
hash. add ("H", "100100010");
hash. add ("I", "010100010");
hash. add ("J", "001100010");
hash. add ("k", "100010001");
hash. add ("L", "010010001");

hash. add ("M", "110000001");
hash. add ("N", "001010001");
hash. add ("O", "101000001");
hash. add ("P", "011000001");
hash. add ("Q", "000110001");
hash. add ("r", "100100001");
hash. add ("S", "010100001");

hash. add ("T", "001100001");
hash. add ("u", "100011000");
hash. add ("V", "010011000");
hash. add ("W", "110001000");
hash. add ("X", "001011000");
hash. add ("Y", "101001000");
hash. add ("Z", "011001000");

Hash. Add ("-", "000111000 ");
Hash. Add ("%", "100101000 ");
Hash. Add ("$", "010101000 ");
Hash. Add ("*", "001101000 ");

Return hash;
}
}
}

}