Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System/compmod/system/componentmodel/MaskedTextResultHint.cs

@@ -0,0 +1,59 @@
+//------------------------------------------------------------------------------
+// <copyright file="TextBoxBase.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.ComponentModel
+{
+    /// <devdoc>
+    ///     Enum defining hints about the reason of the result of a particular operation.
+    /// </devdoc>
+    public enum MaskedTextResultHint
+    {
+        // Unknown/Uninitialized
+        Unknown                         = 0,
+
+        ////////// Success (positive values, excluded).  /////////
+        /// WARNING: Do NOT modify the order of the success enum values, they are ordered the way TestString give precedence 
+        /// to the result hint when multiple chars tested giving different success hints.
+
+        // The operation Succeeded because a literal, prompt or space char was escaped.
+        CharacterEscaped                = 1,
+        // The primary operation was not performed because it was not needed and no side effect generated.
+        NoEffect                        = 2,
+        // The primary operation was not performed but had a side effect (e.g. Delete at an unassigned edit pos produces left-shifting of chars).
+        SideEffect                      = 3,
+        // The primary operation succeeded.
+        Success                         = 4,
+        
+
+        /////////  Failure values (negative values). /////////
+        
+        // Failure due to mask violation. (values in the range of [-1, -49]
+
+        // Input character not ascii.
+        AsciiCharacterExpected          = -1,
+        // Input character not alpha-numeric ascii.
+        AlphanumericCharacterExpected   = -2,
+        // Input character not a digit.
+        DigitExpected                   = -3,
+        // Input character not a letter.
+        LetterExpected                  = -4,
+        // Input character not a signed digit.
+        SignedDigitExpected             = -5,
+
+        // Other failures. (values < -50)
+        
+        // Invalid input
+        InvalidInput                    = -51,
+        // Prompt not allowed as input.
+        PromptCharNotAllowed            = -52,
+        // No more room.
+        UnavailableEditPosition         = -53,
+        // Literal or separator position.
+        NonEditPosition                 = -54,
+        // Position not in the range of indexes.
+        PositionOutOfRange              = -55
+    }
+}