This article explains that how C# redaction API allows you to easily redact data of sensitive or private nature from your documents. You can apply text redaction using exact phrase or regular expression for documents of different formats like PDF, DOC, DOCX, PPT, PPTX, XLS, XLSX and others.... The most popular redaction case is to remove a text from a document...for exact phase is case insensitive.For a case-sensitive redaction...