diff --git a/GridBlazor/ExcelWriter.cs b/GridBlazor/ExcelWriter.cs
index b2b069b1..123ccd4b 100644
--- a/GridBlazor/ExcelWriter.cs
+++ b/GridBlazor/ExcelWriter.cs
@@ -14,7 +14,14 @@ namespace GridBlazor
 {
     public class ExcelCell
     {
-        public string Content { get; set; }
+        private string _content;
+
+        public string Content {
+            get { return _content; }
+            set { 
+                _content = RemoveInvalidXmlChars(value); 
+            }
+        }
         public int ColumnIndex { get; set; }
         public int RowIndex { get; set; }
         public int ColSpan { get; set; }
@@ -46,6 +53,11 @@ public ExcelCell(string value, Type type = null)
             else
                 Type = CellValues.InlineString;
         }
+
+        private string RemoveInvalidXmlChars(string content)
+        {
+            return new string(content.Where(ch => System.Xml.XmlConvert.IsXmlChar(ch)).ToArray());
+        }
     }
 
     public class ExcelStatus