System.Data.Tests.DataViewTest2.CopyTo C# (CSharp) Method

        public void CopyTo()
        {
            //create the source datatable
            DataTable dt = DataProvider.CreateChildDataTable();

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

            DataRowView[] drvExpected = null;
            DataRowView[] drvResult = null;

            // ------- Copy from Index=0
            drvExpected = new DataRowView[dv.Count];
            for (int i = 0; i < dv.Count; i++)
            {
                drvExpected[i] = dv[i];
            }

            drvResult = new DataRowView[dv.Count];
            // CopyTo from index 0
            dv.CopyTo(drvResult, 0);
            Assert.Equal(drvResult, drvExpected);

            // ------- Copy from Index=3
            drvExpected = new DataRowView[dv.Count + 3];
            for (int i = 0; i < dv.Count; i++)
            {
                drvExpected[i + 3] = dv[i];
            }

            drvResult = new DataRowView[dv.Count + 3];
            // CopyTo from index 3
            dv.CopyTo(drvResult, 3);
            Assert.Equal(drvResult, drvExpected);

            // ------- Copy from Index=3,larger array
            drvExpected = new DataRowView[dv.Count + 9];
            for (int i = 0; i < dv.Count; i++)
            {
                drvExpected[i + 3] = dv[i];
            }

            drvResult = new DataRowView[dv.Count + 9];
            // CopyTo from index 3,larger array
            dv.CopyTo(drvResult, 3);
            Assert.Equal(drvResult, drvExpected);

            // ------- CopyTo smaller array, check exception
            drvResult = new DataRowView[dv.Count - 1];

            // CopyTo smaller array, check exception
            Assert.Throws<IndexOutOfRangeException>(() =>
            {
                dv.CopyTo(drvResult, 0);
            });
        }