Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web/UI/WebControls/DataControlPagerLinkButton.cs

@@ -0,0 +1,63 @@
+//------------------------------------------------------------------------------
+// <copyright file="DataControlPagerLinkButton.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>                                                                
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI.WebControls {
+
+    using System;
+    using System.Drawing;
+    using System.Web.Util;
+
+
+    /// <devdoc>
+    ///  Derived version of LinkButton used within a DataControl.
+    /// </devdoc>
+    [SupportsEventValidation]
+    internal class DataControlPagerLinkButton : DataControlLinkButton {
+        
+        internal DataControlPagerLinkButton(IPostBackContainer container) : base(container) {
+        }
+
+        public override bool CausesValidation {
+            get {
+                return false;
+            }
+            set {
+                throw new NotSupportedException(SR.GetString(SR.CannotSetValidationOnPagerButtons));
+            }
+        }
+
+        /// <devdoc>
+        ///  In HTML hyperlinks always use the browser's link color.
+        ///  For the DataControl, we want all LinkButtons to honor the ForeColor setting.
+        ///  This requires looking up into the control hierarchy to see if either the cell
+        ///  or the containing row or table define a ForeColor.
+        /// </devdoc>
+        protected override void SetForeColor() {
+            if (ControlStyle.IsSet(System.Web.UI.WebControls.Style.PROP_FORECOLOR) == false) {
+                Color hyperLinkForeColor;
+                Control control = this;
+
+                for (int i = 0; i < 6; i++) {
+                    control = control.Parent;
+
+                    // pager buttons are usually inside a table that's inside the pager row
+                    Debug.Assert(((i == 0) && (control is TableCell)) ||
+                                 ((i == 1) && (control is TableRow)) ||
+                                 ((i == 2) && (control is Table)) ||
+                                 ((i == 3) && (control is TableCell)) ||
+                                 ((i == 4) && (control is TableRow)) ||
+                                 ((i == 5) && (control is Table)));
+                    hyperLinkForeColor = ((WebControl)control).ForeColor;
+                    if (hyperLinkForeColor != Color.Empty) {
+                        ForeColor = hyperLinkForeColor;
+                        break;
+                    }
+                }
+            }
+        }
+    }
+}
+