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