C#

install \inlite barcodereader ip\ nuget packages this package installs \clearimagenet 70 dll\ assembly, which contains two namespaces \inlite clearimagenet\ namespace implements high level functions recommended to use in new applications code examples use only this namespace \inlite clearimage\ namespace is substantially compatible with the com api and is specifically designed to ease the migration from clearimage com api applications to net it also supports a few low level functions clearimage project development use visual studio c# clearimage example project https //barcode reader inliteresearch com/get ci example cs or follow the code examples below extend functionality combine code examples on this page with methods described in clearimage api documentation http //www inliteresearch com/help/ci in developing your project contact support\@inliteresearch com if you have questions exception handling clearimage net api reports errors as an \exception\ object try { // call clearimage net api } catch(exception ex) { console writeline("error " + ex message); } barcode reading read 1d barcodes from a page this example reads code 39 and code 128 barcodes set barcode types used in your application setting \reader auto1d=true;\ automatically finds barcode type, but it is slower and is not recommended for production using inlite clearimagenet; void readbarcode1d page(string filename, int page) { try { using(barcodereader reader = new barcodereader()) { reader code39 = true; reader code128 = true; // reader auto1d = true; barcode\[] barcodes = reader read(filename, page); foreach(barcode barcode in barcodes) console writeline($"barcode type {barcode type} text {barcode text}"); } } catch(exception ex) { console writeline("exception " + ex tostring()); } } read 2d barcode from a page this example reads pdf417, datamatrix, and qr code 2d barcodes might contain binary data available in \barcode data\ property using inlite clearimagenet; void readbarcode2d page(string filename, int page) { try { using(barcodereader reader = new barcodereader()) { reader pdf417 = true; // reader datamatrix = true; // reader qr = true; barcode\[] barcodes = reader read(filename, page); foreach(barcode barcode in barcodes) console writeline($"barcode type {barcode type} text {barcode text}"); } } catch(exception ex) { console writeline("exception " + ex tostring()); } } read postal barcodes from a page this example reads postal barcodes from an image file page using inlite clearimagenet; void readpostal page(string filename, int page) { try { using(barcodereader reader = new barcodereader()) { reader fourstate = true; // <= read postal barcodes barcode\[] barcodes = reader read(filename, page); foreach(barcode barcode in barcodes) { switch(barcode type) { case barcodetype uspsintelligentmail console write(" us intelligent mail"); break; case barcodetype bpopostcode console write("uk royal mail"); break; case barcodetype australianpost console write("australian mail"); break; case barcodetype singaporepost console write("singapore mail"); break; case barcodetype fourstate console write("forstate "); break; } console writeline(" text " + barcode text); } } } catch(exception ex) { console writeline("exception " + ex tostring()); } } read driver's license barcode this example reads the driver's license barcode from an image file page using inlite clearimagenet; void readdriverlicbarcode page(string filename, int page) { try { using(barcodereader reader = new barcodereader()) { reader drvlicid = true; barcode\[] barcodes = reader read(filename, page); foreach(barcode barcode in barcodes) { inlite data dldecoder decoder = new inlite data dldecoder(); if(decoder decode(text) != "") { console writeline("last " + decoder last); console writeline("first " + decoder first); console writeline("middle " + decoder middle); console writeline("dob " + decoder dob); console writeline("eyes " + decoder eyes); console writeline("hair " + decoder hair); console writeline("sex " + decoder sex); console writeline("height " + decoder height); console writeline("street " + decoder street); console writeline("city " + decoder city); console writeline("state " + decoder state); console writeline("postal " + decoder postal); console writeline("country " + decoder country); console writeline("id " + decoder id); console writeline("issued " + decoder issued); console writeline("expires " + decoder expires); } } } } catch(exception ex) { console writeline("exception " + ex tostring()); } } read from a multi page image file this example reads barcodes from a single page file or all pages of a multi page image file using inlite clearimagenet; void readbarcode1d file(string filename) { try { using(barcodereader reader = new barcodereader()) { reader code39 = true; reader code128 = true; barcode\[] barcodes = reader read(filename); // <== read from all pages foreach(barcode barcode in barcodes) console writeline($"barcode type {barcode type} barcode page {barcode page} text {barcode text}"); } } catch(exception ex) { console writeline("exception " + ex tostring()); } } read from a stream this example reads barcodes from a stream the stream contains the content of a single image file for example, if a file is stored in a database using inlite clearimagenet; void readbarcode1d stream(stream stream) { try { using(barcodereader reader = new barcodereader()) { reader code39 = true; reader code128 = true; barcode\[] barcodes = reader read(stream); // <== read from a stream foreach(barcode barcode in barcodes) console writeline($"barcode type {barcode type} barcode page {barcode page} text {barcode text}"); } } catch(exception ex) { console writeline("exception " + ex tostring()); } } optimize barcode reading this page docid\ smk4 lgrtfex0zacvu2lv describes methods for improving the recognition rate and/or speed image processing repair image page this example uses some of the most popular image processing functions in a production application, the specific sequence of functions should be selected based on specific application needs using inlite clearimagenet; static void repairpage(imageeditor editor) { editor autodeskew(); editor autorotate(); editor autocrop(10, 10, 10, 10); // crop to 10 pixels on each side // editor advancedbinarize(); // convert to bi tonal an image with complex background patterns editor tobitonal(); editor borderextract(borderextractmode deskewcrop); // deskew and crop based on black border editor removepunchholes(); editor smoothcharacters(); editor cleannoise(3); // clean black noise of 3 pixels // editor cleannoise // clean black and white noise // (cleannoiseflags black | cleannoiseflags white, 3, 3, 10); editor reconstructlines(linedirection horzandvert); } void repair page(string filename, int page, string fileout) { try { using(imageeditor editor = new imageeditor()) { editor image open(filename, page); // do image repair repairpage(editor); // save results editor image saveas(fileout, inlite clearimage efileformat ciext); } } catch(exception ex) { console writeline("exception " + ex tostring()); } } repair all images in a multi page file this example repairs all images in a multi page file and saves the result in the \fileout\ file using inlite clearimagenet; private static void oneditpage(object sender, editpageeventargs e) { // e cancel = true; // abort file processing // e skippage = true; // remove this page from the output repairpage(e editor); // see this method in a single page example } void repair file(string filename, string fileout) { try { using(imageeditor editor = new imageeditor()) { bool ret = editor edit(filename, oneditpage, fileout, imagefileformat outputfileextension, true); } } catch(exception ex) { console writeline("exception " + ex tostring()); } } repair all images in a stream this example repairs all images in an input stream and saves the output stream using a specified file format streams contain the content of a single image file for example, if a file is stored in a database using inlite clearimagenet; private static void oneditpage(object sender, editpageeventargs e) { repairpage(e editor); // see this method in a single page example } stream repair stream(stream stream, imagefileformat output format) { try { using(imageeditor editor = new imageeditor()) { memorystream msout = editor edit(stream, oneditpage, output format); return msout; } } catch(exception ex) { console writeline("exception " + ex tostring()); return null; } }