System.Data.DataView.CopyTo C# (CSharp) Метод

		public void CopyTo (Array array, int index)
		{
			if (index + rowCache.Length > array.Length)
				throw new IndexOutOfRangeException ();

			int row = 0;
			for (; row < rowCache.Length && row < array.Length; row++)
				array.SetValue (rowCache [row], index + row);
		}

		[Test] public void RowFilter()
		{
			//note: this test does not check all the possible row filter expression. this is done in DataTable.Select method.
			// this test also check DataView.Count property

			DataRowView[] drvResult = null;
			ArrayList al = new ArrayList();

			//create the source datatable
			DataTable dt = DataProvider.CreateChildDataTable();

			//create the dataview for the table
			DataView dv = new DataView(dt);

			//-------------------------------------------------------------
			//Get excpected result 
			al.Clear();
			foreach (DataRow dr in dt.Rows ) 
			{
				if ((int)dr["ChildId"] == 1)
				{
					al.Add(dr);
				}
			}

			// RowFilter = 'ChildId=1', check count
			dv.RowFilter = "ChildId=1";
			Assert.AreEqual(al.Count , dv.Count , "DV70");

			// RowFilter = 'ChildId=1', check rows
			drvResult = new DataRowView[dv.Count];
			dv.CopyTo(drvResult,0);
			//check that the filterd rows exists
			bool Succeed = true;
			for (int i=0; i<drvResult.Length ; i++)
			{
				Succeed = al.Contains(drvResult[i].Row);
				if (!Succeed) break;
			}
			Assert.AreEqual(true, Succeed , "DV71");
			//-------------------------------------------------------------

			//-------------------------------------------------------------
			//Get excpected result 
			al.Clear();
			foreach (DataRow dr in dt.Rows ) 
				if ((int)dr["ChildId"] == 1 && dr["String1"].ToString() == "1-String1" ) 
					al.Add(dr);

			// RowFilter - ChildId=1 and String1='1-String1'
			dv.RowFilter = "ChildId=1 and String1='1-String1'";
			Assert.AreEqual(al.Count , dv.Count , "DV72");

			// RowFilter = ChildId=1 and String1='1-String1', check rows
			drvResult = new DataRowView[dv.Count];
			dv.CopyTo(drvResult,0);
			//check that the filterd rows exists
			Succeed = true;
			for (int i=0; i<drvResult.Length ; i++)
			{
				Succeed = al.Contains(drvResult[i].Row);
				if (!Succeed) break;
			}
			Assert.AreEqual(true, Succeed , "DV73");
			//-------------------------------------------------------------

			//EvaluateException
			// RowFilter - check EvaluateException
			try 
			{
				dv.RowFilter = "Col=1";
				Assert.Fail("DV74: RowFilter Failed to throw EvaluateException");
			}
			catch (EvaluateException) {}
			catch (AssertionException exc) {throw  exc;}
			catch (Exception exc)
			{
				Assert.Fail("DV75: RowFilter. Wrong exception type. Got:" + exc);
			}

			//SyntaxErrorException 1
			// RowFilter - check SyntaxErrorException 1
			try 
			{
				dv.RowFilter = "sum('something')";
				Assert.Fail("DV76: RowFilter Failed to throw SyntaxErrorException");
			}
			catch (SyntaxErrorException) {}
			catch (AssertionException exc) {throw  exc;}
			catch (Exception exc)
			{
				Assert.Fail("DV77: RowFilter. Wrong exception type. Got:" + exc);
			}

			//SyntaxErrorException 2
			// RowFilter - check SyntaxErrorException 2
			try 
			{
				dv.RowFilter = "HH**!";
				Assert.Fail("DV78: RowFilter Failed to throw SyntaxErrorException");
			}
			catch (SyntaxErrorException) {}
			catch (AssertionException exc) {throw  exc;}
			catch (Exception exc)
			{
				Assert.Fail("DV79: RowFilter. Wrong exception type. Got:" + exc);
			}
		}