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C4IT.API/ConverterHelper.cs

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+using System;
+using System.Linq;
+using System.Net;
+using System.Text.RegularExpressions;
+
+namespace C4IT.API
+{
+    public static class ConverterHelper
+    {
+        public static string Html2Plaintext(string html)
+        {
+            if (string.IsNullOrWhiteSpace(html))
+                return string.Empty;
+
+            // 1. HTML‐Entities dekodieren (z.B. ü → ü)
+            string decoded = WebUtility.HtmlDecode(html);
+
+            // 2. </p> und <br> durch Zeilenumbruch ersetzen
+            string withBreaks = Regex.Replace(
+                decoded,
+                   @"</(?:p|div|li|blockquote|pre|h[1-6]|tr)\s*>      # schließende Block-Tags
+                      |<(?:br|hr)\b[^>]*>                             # <br>, <hr>
+                      |<(?:ul|ol|table|thead|tbody|tfoot|article      # öffnende Block-Container
+                      |section|nav|aside|header|footer
+                      |figure|figcaption|details|summary)[^>]*>",
+                " ",
+                RegexOptions.IgnorePatternWhitespace | RegexOptions.IgnoreCase);
+
+            // 3. Alle übrigen Tags entfernen
+            string noTags = Regex.Replace(withBreaks, @"<[^>]+>", string.Empty);
+
+            return noTags.Trim();
+        }
+
+        public static bool ObjectToBoolConverter(object source)
+        {
+            try
+            {
+                if (source.Equals("1"))
+                {
+                    source = 1;
+                }
+                return Convert.ToBoolean(source);
+            }
+            catch (Exception)
+            {
+                return false;
+            }
+        }
+
+        public static int ObjectToIntConverter(object source)
+        {
+            try
+            {
+                return Convert.ToInt32(source);
+            }
+            catch (Exception)
+            {
+                return 0;
+            }
+        }
+
+        public static string ObjectToStringConverter(this object value)
+        {
+            return (value ?? string.Empty).ToString();
+        }
+
+
+    }
+}