Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

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

@@ -0,0 +1,26 @@
+using System.Security.Permissions;
+
+namespace System.Web.DynamicData {
+
+    /// <summary>
+    /// Interface implemented by controls that can provide data to a DynamicControlParameter's.
+    /// i.e. the control implmenting this interface can be set as the ControlId of the DynamicControlParameter.
+    /// </summary>
+    public interface IControlParameterTarget {
+        /// <summary>
+        /// The type of data being served by this provider
+        /// </summary>
+        MetaTable Table { get; }
+
+        /// <summary>
+        /// The column on which the parameter is being applied, if available.  e.g. a FilterUserControl
+        /// can provide it, but a GridView selection cannot.
+        /// </summary>
+        MetaColumn FilteredColumn { get; }
+
+        /// <summary>
+        /// Get the expression that can be used as a ControlParameter's 'PropertyName'
+        /// </summary>
+        string GetPropertyNameExpression(string columnName);
+    }
+}