Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/System.Web.DynamicData/DynamicData/DataBoundControlParameterTarget.cs

@@ -0,0 +1,40 @@
+namespace System.Web.DynamicData {
+    using System;
+    using System.Collections.Generic;
+    using System.Linq;
+    using System.Web.UI;
+    using System.Web.UI.WebControls;
+    using System.Globalization;
+
+    internal class DataBoundControlParameterTarget : IControlParameterTarget {
+        private Control _control;
+        public DataBoundControlParameterTarget(Control control) {
+            if (control == null) {
+                throw new ArgumentNullException("control");
+            }
+            _control = control;
+        }
+
+        public MetaTable Table {
+            get {
+                return _control.FindMetaTable();
+            }
+        }
+
+        public MetaColumn FilteredColumn {
+            get {
+                return null;
+            }
+        }
+
+        public string GetPropertyNameExpression(string columnName) {
+            // Get the DataKeyPropertyAttribute and use that as the to get the correct property name expression
+            DataKeyPropertyAttribute attribute = _control.GetType().GetCustomAttributes(true).OfType<DataKeyPropertyAttribute>().FirstOrDefault();
+            if ((attribute != null) && !String.IsNullOrEmpty(attribute.Name)) {
+                return attribute.Name + String.Format(CultureInfo.InvariantCulture, "['{0}']",  columnName);
+            }
+            // 
+            return String.Empty;
+        }
+    }
+}