C# DataRow.CopyErrors方法代码示例

		internal void CopyRow (DataRow fromRow, DataRow toRow)
		{
			if (fromRow.HasErrors)
				fromRow.CopyErrors (toRow);

			if (fromRow.HasVersion (DataRowVersion.Original))
				toRow.Original = toRow.Table.RecordCache.CopyRecord (this, fromRow.Original, -1);

			if (fromRow.HasVersion (DataRowVersion.Current)) {
				if (fromRow.Original != fromRow.Current)
					toRow.Current = toRow.Table.RecordCache.CopyRecord (this, fromRow.Current, -1);
				else
					toRow.Current = toRow.Original;
			}
		}

		/// <summary>
		/// Copies a DataRow into a DataTable, preserving any
		/// property settings, as well as original and current values.
		/// </summary>
		public void ImportRow (DataRow row)
		{
			if (row.RowState == DataRowState.Detached)
				return;

			DataRow newRow = NewNotInitializedRow ();

			int original = -1;
			if (row.HasVersion (DataRowVersion.Original)) {
				original = row.IndexFromVersion (DataRowVersion.Original);
				newRow.Original = RecordCache.NewRecord ();
				RecordCache.CopyRecord (row.Table, original, newRow.Original);
			}

			if (row.HasVersion (DataRowVersion.Current)) {
				int current = row.IndexFromVersion (DataRowVersion.Current);
				if (current == original) {
					newRow.Current = newRow.Original;
				} else {
					newRow.Current = RecordCache.NewRecord ();
					RecordCache.CopyRecord (row.Table, current, newRow.Current);
				}
			}

			//Import the row only if RowState is not detached
			//Validation for Deleted Rows happens during Accept/RejectChanges
			if (row.RowState != DataRowState.Deleted)
				newRow.Validate ();
			else
				AddRowToIndexes (newRow);
			Rows.AddInternal(newRow);

			if (row.HasErrors)
				row.CopyErrors (newRow);
		}

		/// <summary>
		/// Copies a DataRow into a DataTable, preserving any 
		/// property settings, as well as original and current values.
		/// </summary>
		public void ImportRow (DataRow row) 
		{
			DataRow newRow = NewNotInitializedRow();

			int original = -1;
			if (row.HasVersion(DataRowVersion.Original)) {
				original = row.IndexFromVersion(DataRowVersion.Original);
				newRow.Original = RecordCache.NewRecord();
				RecordCache.CopyRecord(row.Table,original,newRow.Original);
			}

			if (row.HasVersion(DataRowVersion.Current)) {
				int current = row.IndexFromVersion(DataRowVersion.Current);
				if (current == original)
					newRow.Current = newRow.Original;
				else {
					newRow.Current = RecordCache.NewRecord();
					RecordCache.CopyRecord(row.Table,current,newRow.Current);
				}
			}

			if (EnforceConstraints)
				// we have to check that the new row doesn't colide with existing row
				Rows.ValidateDataRowInternal(newRow);

			Rows.AddInternal(newRow);		
	
			if (row.HasErrors) {
				row.CopyErrors(newRow);
			}
		}