Dawood Ahmed Programming Tips

Editable pdf file textbox, checkbox, etc. doesn't write after creating pdf file from itextsharp this file should not be editable code below: pdfStamper.FormFlattening =  true ;

If you have base64 code image or image path, easily can add image in PDF from iTextSharp. Code below: PdfReader pdfReader =  new  PdfReader( "C:\\file.pdf" ); PdfStamper pdfStamper =  new  PdfStamper(pdfReader,  new  FileStream( "target save path" , FileMode.Create)); string  imagepath =  "base64 image code" ; Byte[] bytes = Convert.FromBase64String(Regex.Replace(imagepath, @ "^data:image\/[a-zA-Z]+;base64," ,  string .Empty)); var  pdfContentByte = pdfStamper.GetOverContent(1);  // page number iTextSharp.text.Image image1 = iTextSharp.text.Image.GetInstance(bytes); image1.SetAbsolutePosition(140, 70); image1.ScalePercent(20f); pdfContentByte.AddImage(image1); pdfStamper.Close();

Finding item in dropdownlist from a string. ddlStudent.Items.Contains( new  ListItem("Dawood"))

Sometimes we need to remove special character from staring and ending of a string. private   static   string  RemoveFirstAndLastSpecialCharacter( string  input) {      if  (input !=  string .Empty)     {          string  firstRemovableStr =  string .Empty;          string  lastRemovableStr =  string .Empty;          bool  IsLetter =  false ;          for  ( int  i = 0; i < input.Length; i++)         {              if  (! char .IsLetter(input[i]) && !IsLetter)             ...

Solved : These options will be help full for resolving the issue. 1- Convert base64 to blob var blob = b64toBlob("JVBERi0xLjcKCjEgMCBvYmogICUgZW50cnkgcG9pbnQKPDwKICAvVHlwZSAvQ2F0YWxvZwog' +   'IC9QYWdlcyAyIDAgUgo+PgplbmRvYmoKCjIgMCBvYmoKPDwKICAvVHlwZSAvUGFnZXMKICAv' +   'TWVkaWFCb3ggWyAwIDAgMjAwIDIwMCBdCiAgL0NvdW50IDEKICAvS2lkcyBbIDMgMCBSIF0K' +   'Pj4KZW5kb2JqCgozIDAgb2JqCjw8CiAgL1R5cGUgL1BhZ2UKICAvUGFyZW50IDIgMCBSCiAg' +   'L1Jlc291cmNlcyA8PAogICAgL0ZvbnQgPDwKICAgICAgL0YxIDQgMCBSIAogICAgPj4KICA+' +   'PgogIC9Db250ZW50cyA1IDAgUgo+PgplbmRvYmoKCjQgMCBvYmoKPDwKICAvVHlwZSAvRm9u' +   'dAogIC9TdWJ0eXBlIC9UeXBlMQogIC9CYXNlRm9udCAvVGltZXMtUm9tYW4KPj4KZW5kb2Jq' +   'Cgo1IDAgb2JqICAlIHBhZ2UgY29udGVudAo8PAogIC9MZW5ndGggNDQKPj4Kc3RyZWFtCkJU' +   'CjcwIDUwIFRECi9GMSAxMiBUZgooSGVsbG8sIHdvcmxkISkgVGoKRVQKZW5kc3RyZWFtCmVu' +   'ZG9iagoKeHJlZgowIDYKMDAwMDAwMDAwMCA2NTUzNSBmIAowMDAwMDAwMDEwIDAwMDAwIG4g' + ...

Solved: $(document.body).on('hidden.bs.modal', '#myModal', function () {             //do something });

Solved: Add condition in tmpl jquery and remember its have closing tag {{if colName==''}}       <a class="hidden" href="${colName}">View</a> {{else}}       <a class="visible" href="${colName}">View</a> {{/if}}