diff --git a/Lib/csharp/std_string.i b/Lib/csharp/std_string.i
index 9eff76f35..73c164153 100644
--- a/Lib/csharp/std_string.i
+++ b/Lib/csharp/std_string.i
@@ -38,6 +38,10 @@ class string;
 
 %typemap(typecheck) string = char *;
 
+%typemap(throws) string %{
+  SWIG_CSharpThrowException(SWIG_CSharpException, $1.c_str());
+%}
+
 // const string &
 %typemap(ctype) const string & "char *"
 %typemap(imtype) const string & "string"
@@ -56,5 +60,9 @@ class string;
 
 %typemap(typecheck) const string & = char *;
 
+%typemap(throws) const string & %{
+  SWIG_CSharpThrowException(SWIG_CSharpException, $1.c_str());
+%}
+
 }