1. Loop Continue
ISYS 350

2. Straight Line Depreciation Table

3. dataGridView Control Properties
ColumnCount: specify the number of columns
dataGridView1.ColumnCount = 4;
Columns collection
each column is identified by an index, first column index is 0
Each column has a HeaderText property:
Ex. dataGridView1.Columns[0].HeaderText = "Year";
Rows collection
Clear all rows: dataGridView1.Rows.Clear();
each row is identified by an index, first row index is 0
Adding a blank row:
dataGridView1.Rows.Add();
Each Row has a Cells collection
Each cell is identified by an index
Has a value property:
dataGridView1.Rows[year - 1].Cells[0].Value = year;

4. Future Value Table FV = PV * (1 +Rate) Year

5. Code Example dataGridView1.ColumnCount = 2;
dataGridView1.Columns[0].HeaderText = "Year";
dataGridView1.Columns[1].HeaderText = "Future Value";
double pv, rate, lastYear, fv;
pv = double.Parse(textBox1.Text);
rate = double.Parse(textBox2.Text);
lastYear = double.Parse(textBox3.Text);
dataGridView1.Rows.Clear();
for (int year = 1; year <= lastYear; year++) {
dataGridView1.Rows.Add();
fv = pv * Math.Pow(1 + rate, year);
dataGridView1.Rows[year - 1].Cells[0].Value = year;
dataGridView1.Rows[year - 1].Cells[1].Value = fv.ToString("c"); }

6. Depreciation Table Code Example
dataGridView1.ColumnCount = 4;
dataGridView1.Columns[0].HeaderText = "Year";
dataGridView1.Columns[1].HeaderText = "Value at Begining of Year";
dataGridView1.Columns[2].HeaderText = "Depreciation During Year";
dataGridView1.Columns[3].HeaderText = "Total depreciation to End of Year";
double value, life, depreciation, totalDepreciation=0;
value = double.Parse(textBox1.Text);
life = double.Parse(textBox2.Text);
depreciation = value / life;
dataGridView1.Rows.Clear();
for (int year = 1; year <= life; year++) {
dataGridView1.Rows.Add();
dataGridView1.Rows[year - 1].Cells[0].Value = year;
dataGridView1.Rows[year - 1].Cells[1].Value = value.ToString("c");
dataGridView1.Rows[year-1].Cells[2].Value = depreciation.ToString("c");
totalDepreciation += depreciation;
dataGridView1.Rows[year - 1].Cells[3].Value = totalDepreciation.ToString("c");
value -= depreciation; }

7. Alternating Row Color dataGridView1.ColumnCount = 2;
dataGridView1.Columns[0].HeaderText = "Year";
dataGridView1.Columns[1].HeaderText = "Future Value";
double pv, rate, lastYear, fv;
pv = double.Parse(textBox1.Text);
rate = double.Parse(textBox2.Text);
lastYear = double.Parse(textBox3.Text);
dataGridView1.Rows.Clear();
for (int year = 1; year <= lastYear; year++) {
dataGridView1.Rows.Add();
fv = pv * Math.Pow(1 + rate, year);
dataGridView1.Rows[year - 1].Cells[0].Value = year;
dataGridView1.Rows[year - 1].Cells[1].Value = fv.ToString("c");
if (year % 2 == 0)
dataGridView1.Rows[year - 1].DefaultCellStyle.BackColor = Color.AliceBlue;
else
dataGridView1.Rows[year - 1].DefaultCellStyle.BackColor = Color.Pink; }

8. A Loop that is Inside Another Loop is Called a Nested Loop

9. Nested Loop Example A clock is an example of a nested loop
For each hour,
Minute hand moves 60 times for each hour
for (int hour = 0; hour < 24; hour++) {
for (int minute = 0; minute < 60; minute++)
MessageBox.Show("Hour: " + hour.ToString() + " Minute: " + minute.ToString()); }

10. Using dataGridView

11. double rate, year, presentValue, futureValue;
presentValue = double.Parse(textBox1.Text);
dataGridView1.ColumnCount = 5;
dataGridView1.Columns[0].HeaderText = "Rate/Year";
dataGridView1.Columns[1].HeaderText = "5";
dataGridView1.Columns[2].HeaderText = "10";
dataGridView1.Columns[3].HeaderText = "15";
dataGridView1.Columns[4].HeaderText = "20";
int rowIndex = 0, colIndex;
dataGridView1.Rows.Clear();
for (rate = 0.03; rate <= 0.05; rate += 0.005) {
dataGridView1.Rows.Add();
colIndex = 0;
dataGridView1.Rows[rowIndex].Cells[colIndex].Value = rate.ToString("p2");
for (year = 5; year <= 20; year += 5)
futureValue = presentValue * Math.Pow(1 + rate, year);
colIndex += 1;
dataGridView1.Rows[rowIndex].Cells[colIndex].Value = futureValue.ToString("c"); }
rowIndex += 1;

13. Code Example:loop control variable used as row/column index
int rows = 9, cols = 10, Product;
dataGridView1.ColumnCount = cols;
dataGridView1.Columns[0].HeaderText = "";
dataGridView1.Columns[0].Width = 25;
for (int col = 2; col <= cols; col++) {
dataGridView1.Columns[col-1].HeaderText = (col-1).ToString();
dataGridView1.Columns[col-1].Width = 25; }
for (int rowIndex = 1; rowIndex <= rows; rowIndex++)
dataGridView1.Rows.Add();
dataGridView1.Rows[rowIndex - 1].Cells[0].Value = rowIndex.ToString();
for (int colIndex = 2; colIndex <= cols; colIndex++)
Product= rowIndex * (colIndex-1);
dataGridView1.Rows[rowIndex - 1].Cells[colIndex-1].Value = Product.ToString();