1 files changed, 45 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Diagnostics/AssertFilter.cs b/src/mscorlib/src/System/Diagnostics/AssertFilter.cs
new file mode 100644
index 0000000000..b301776a22
--- /dev/null
+++ b/src/mscorlib/src/System/Diagnostics/AssertFilter.cs
@@ -0,0 +1,45 @@
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+
+namespace System.Diagnostics {
+  
+    
+    using System;
+    using System.Runtime.Versioning;
+   // A Filter is used to decide whether an assert failure 
+   // should terminate the program (or invoke the debugger).  
+   // Typically this is done by popping up a dialog & asking the user.
+   // 
+   // The default filter brings up a simple Win32 dialog with 3 buttons.
+    
+    [Serializable]
+    abstract internal class AssertFilter
+    {
+    
+        // Called when an assert fails.  This should be overridden with logic which
+        // determines whether the program should terminate or not.  Typically this
+        // is done by asking the user.
+        //
+        // The windowTitle can be null.
+        abstract public AssertFilters  AssertFailure(String condition, String message, 
+                                  StackTrace location, StackTrace.TraceFormat stackTraceFormat, String windowTitle);
+    
+    }
+    // No data, does not need to be marked with the serializable attribute
+    internal class DefaultFilter : AssertFilter
+    {
+        internal DefaultFilter()
+        {
+        }
+    
+        [System.Security.SecuritySafeCritical]  // auto-generated
+        public override AssertFilters  AssertFailure(String condition, String message, 
+                                  StackTrace location, StackTrace.TraceFormat stackTraceFormat,
+                                  String windowTitle)
+    
+        {
+            return (AssertFilters) Assert.ShowDefaultAssertDialog (condition, message, location.ToString(stackTraceFormat), windowTitle);
+        }
+    }
+
+}