Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/UI/IValidator.cs

@@ -0,0 +1,45 @@
+//------------------------------------------------------------------------------
+// <copyright file="IValidator.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+/*
+ */
+
+namespace System.Web.UI {
+
+    /// <devdoc>
+    ///    <para>Defines the contract that the validation controls must implement.</para>
+    /// </devdoc>
+    public interface IValidator {    
+                
+
+        /// <devdoc>
+        ///    <para>Indicates whether the content entered in a control is valid.</para>
+        /// </devdoc>
+        bool IsValid {
+            get;
+            set;
+        }
+        
+
+        /// <devdoc>
+        ///    <para>Indicates the error message text generated when the control's content is not 
+        ///       valid.</para>
+        /// </devdoc>
+        string ErrorMessage { 
+            get;
+            set;
+        }
+                
+
+        /// <devdoc>
+        ///    <para>Compares the entered content with the valid parameters provided by the 
+        ///       validation control.</para>
+        /// </devdoc>
+        void Validate();
+    }              
+}
+
+