Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

mcs/class/System.Data/corefx/DataView.cs

@@ -0,0 +1,40 @@
+namespace System.Data
+{
+	partial class DataView
+	{
+        /// <summary>
+        /// Allow construction of DataView with <see cref="System.Predicate&lt;DataRow&gt;"/> and <see cref="System.Comparison&lt;DataRow&gt;"/>
+        /// </summary>
+        /// <remarks>This is a copy of the other DataView ctor and needs to be kept in sync</remarks>
+        internal DataView(DataTable table, System.Predicate<DataRow> predicate, System.Comparison<DataRow> comparison, DataViewRowState RowState) {
+            GC.SuppressFinalize(this);
+            Bid.Trace("<ds.DataView.DataView|API> %d#, table=%d, RowState=%d{ds.DataViewRowState}\n",
+                           ObjectID, (table != null) ? table.ObjectID : 0, (int)RowState);
+            if (table == null)
+                throw ExceptionBuilder.CanNotUse();
+
+            this._dvListener = new DataViewListener(this);
+            this._locked = false;
+            this._table = table;
+            _dvListener.RegisterMetaDataEvents(this._table);
+
+            if ((((int)RowState) &
+                 ((int)~(DataViewRowState.CurrentRows | DataViewRowState.OriginalRows))) != 0) {
+                throw ExceptionBuilder.RecordStateRange();
+            }
+            else if (( ((int)RowState) & ((int)DataViewRowState.ModifiedOriginal) ) != 0 &&
+                     ( ((int)RowState) &  ((int)DataViewRowState.ModifiedCurrent) ) != 0
+                    ) {
+                throw ExceptionBuilder.SetRowStateFilter();
+            }
+            _comparison = comparison;
+            SetIndex2("", RowState, ((null != predicate) ? new RowPredicateFilter(predicate) : null), true);
+        }
+
+		/// <summary>This method exists for LinqDataView to keep a level of abstraction away from the RBTree</summary>
+		internal Range FindRecords<TKey, TRow>(Index.ComparisonBySelector<TKey, TRow> comparison, TKey key) where TRow : DataRow
+		{
+			return _index.FindRecords(comparison, key);
+		}
+	}
+}