Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/UI/WebControls/Adapters/WmlBaseValidatorAdapter.cs

@@ -0,0 +1,35 @@
+//------------------------------------------------------------------------------
+// <copyright file="WmlBaseValidatorAdapter.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+#if WMLSUPPORT
+
+namespace System.Web.UI.WebControls.Adapters {
+    using System.Web.UI.WebControls;
+
+    public class WmlBaseValidatorAdapter : WmlLabelAdapter {
+
+        protected new BaseValidator Control {
+            get {
+                return (BaseValidator)base.Control;
+            }
+        }
+
+        // Renders the control only if the control is evaluated as invalid.
+        protected internal override void Render(HtmlTextWriter writer) {
+            if (Control.Enabled &&
+                !Control.IsValid &&
+                Control.Display != ValidatorDisplay.None) {
+
+                if (Control.Text.Trim().Length == 0 && !Control.HasControls()) {
+                    Control.Text = Control.ErrorMessage;
+                }
+                base.Render(writer);
+            }
+        }
+    }
+}
+
+#endif