public stkDlg(StkPrce obj) //constructor that takes a stock price object and loads the fields with it
{
InitializeComponent();
stkabrvTxtBox.Text = obj.stkabrv;
cmpnynmeTextBox.Text = obj.cmpnyname;
opnprceTxtBox.Text = obj.opnprce.ToString("#.00");
hghprceTxtBox.Text = obj.hghprce.ToString("#.00");
lwprceTxtBox.Text = obj.lwprce.ToString("#.00");
clseprceTxtBox.Text = obj.clsprce.ToString("#.00");
dtePicker.Value = obj.dte;
}
private void opnMnuItm_Click(object sender, EventArgs e)
{
opndfle = opnFleDlg.FileName;
if (svedta) // check if the current data in the list box needs to be saved
{
if (MessageBox.Show(this, "Do you want to save the current data before opening a new file?", "Open", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
sveMnuItm_Click(sender, e); // if yes is clicked and the users needs to save the data, call the save method
}
}
if (opnFleDlg.ShowDialog() == DialogResult.Cancel)
{
return; //if user selects cancel, return, otherwise execute the folllowing code
}
stkBox.Items.Clear(); // clear the data from the listbox
try
{
System.IO.StreamReader stkrdr = new System.IO.StreamReader(opndfle); //read the file
String[] stkfle; //create array
Char[] dl = { '\t' }; //delimit file by tab
String stklne = stkrdr.ReadLine(); //read the first line of the file
while (stklne != null) // keep reading until the line returns null(EOF)
{
stkfle = stklne.Split(dl); // seperate the delimited text
StkPrce stock = new StkPrce();
stock.cmpnyname = stkfle[0];
stock.stkabrv = stkfle[1];
stock.opnprce = Double.Parse(stkfle[2]);
int year = Int32.Parse(stkfle[7]);
int month = Int32.Parse(stkfle[8]);
int day = Int32.Parse(stkfle[9]);
stock.date = new DateTime(year, month, day);
stkBox.Items.Add(stock); // add delimeted text to the list box
stklne = stkrdr.ReadLine();
}
stkrdr.Close(); // close the file
stkrdr.Dispose(); // make sure its fully released
}
catch (Exception ex)
{
}
}
public StkPrce stckprceobj() //method that creates a stock price object then returns it to its caller
{
StkPrce obj = new StkPrce();
obj.stkabrv = stkabrvTxtBox.Text;
obj.cmpnyname = cmpnynmeTextBox.Text;
obj.opnprce = Double.Parse(opnprceTxtBox.Text);
obj.hghprce = Double.Parse(hghprceTxtBox.Text);
obj.lwprce = Double.Parse(lwprceTxtBox.Text);
obj.clsprce = Double.Parse(clseprceTxtBox.Text);
obj.dte = dtePicker.Value;
return(obj);
}
private void sveasMnuItm_Click(object sender, EventArgs e)
{
if (sveFleDlg.ShowDialog() == DialogResult.Cancel) //
{
return; // return if cancel is pressed
}
opndfle = sveFleDlg.FileName; // save the name of the file and store it
try
{
System.IO.StreamWriter stkwrtr = new System.IO.StreamWriter(opndfle);// write to the file
for (int i = 0; i < stkBox.Items.Count; i++) //set i to 0, if i is less than the number of items in the list box, increment by 1
{
StkPrce stk = (StkPrce)stkBox.Items[i]; //get the 1st stock price object
stkwrtr.Write(stk.cmpnyname);
stkwrtr.Write("\t");
stkwrtr.Write(stk.stkabrv);
stkwrtr.Write("\t");
stkwrtr.Write(stk.opnprce);
stkwrtr.Write("\t");
stkwrtr.Write(stk.hghprce);
stkwrtr.Write("\t");
stkwrtr.Write(stk.lwprce);
stkwrtr.Write("\t");
stkwrtr.Write(stk.clsprce);
stkwrtr.Write("\t");
stkwrtr.Write(stk.dte);
}
stkwrtr.Close(); // close the writer
stkwrtr.Dispose(); // make sure the reader is fully released
}
catch (Exception)
{
MessageBox.Show(this, "Cant write to file!", "Error");
return;
}
Text = "Stock Market Data"; // reset the text
svedta = false; // reset save data
}
private void pltBtn_Click(object sender, EventArgs e)
{
if (stkBox.Items.Count == 0)// if there are no items in the list box
{
MessageBox.Show("There are no stocks in the list to plot", "Error");
return;
}
Graphics gfx = stkdtaPanl.CreateGraphics(); //create graphics object
try
{
int wth = stkdtaPanl.Width;// set width based on number of stocks in the list
int hght = stkdtaPanl.Height;
double mxvlue = Convert.ToDouble(mxvlu()); // use a double to force floating point arithemetic
double yscle = hght / mxvlue; //set the y scale to height divided by max value
int brspce = wth / stkBox.Items.Count; //set the space between bars as width divided by number of items in the list
int brwth = brspce / 2; // set bar width to bar space divided by 2
int xcrd = brwth; //set x coordinate to bar width
int ycrd = 0; // set y coordinate to 0
for (int i = 0; i < stkBox.Items.Count; i++) //set i to 0, if i is less than the number of items in the list box, increment by 1
{
StkPrce stk = (StkPrce)(stkBox.Items[i]);
Double yprse = (Double)(stk.clsprce);
ycrd = (int)(yprse * yscle);
String clsePrceStr = yprse.ToString("0.00");
gfx.FillRectangle(sb, xcrd, hght + 30 - ycrd, brwth, ycrd); // draw solid rectangle with brush at specified coordinates
gfx.DrawString("$" + clsePrceStr, SystemFonts.DefaultFont, sb, xcrd, hght + 10 - ycrd); // draw text above bars using default font
;
xcrd += brspce; // move x over to next bar
}
gfx.Dispose(); // fully dispose of gfx
gfx = null; //set graphics to null
}
catch (Exception)
{
MessageBox.Show("Unable to plot stock(s)", "Error");
}
}
private void addBtn_Click(object sender, EventArgs e)
{
try
{
stkDlg newstkDlg;
newstkDlg = new stkDlg();
if (newstkDlg.ShowDialog() == DialogResult.OK)// if user pressed ok, add stock object to list
{
StkPrce newStk = newstkDlg.stckprceobj();
stkBox.Items.Add(newStk);
}
}
catch
{
MessageBox.Show("Cannot leave fields empty!", "Error");
}
}
private void addBtn_Click(object sender, EventArgs e)
{
try
{
stkDlg newstkDlg;
newstkDlg = new stkDlg();
if (newstkDlg.ShowDialog() == DialogResult.OK)// if user pressed ok, add stock object to list
{
StkPrce newStk = newstkDlg.stckprceobj();
stkBox.Items.Add(newStk); //add new stock to the list
}
}
catch (Exception)
{
MessageBox.Show("Bad data, cannot add to the list!", "Error");
}
}
private void updteBtn_Click(object sender, EventArgs e)
{
int ndx = stkBox.SelectedIndex;
if (ndx < 0) // if no stock is selected in the list box
{
MessageBox.Show("You must select a stock from the list first!");
return;
}
try{
StkPrce old = (StkPrce)stkBox.SelectedItem;
stkDlg newstkDlg;
newstkDlg = new stkDlg(old);
if (newstkDlg.ShowDialog() == DialogResult.OK)
{
StkPrce newStk = newstkDlg.stckprceobj();
stkBox.Items.RemoveAt(ndx);
stkBox.Items.Insert(ndx, newStk);
}
}
catch (InvalidCastException)
{
MessageBox.Show("Unable to update", "Error");
return;
}
}
private void updteBtn_Click(object sender, EventArgs e)
{
int ndx = stkBox.SelectedIndex;
if (ndx < 0) // if no stock is selected in the list box
{
MessageBox.Show("You must select a stock from the list first!", "Attention");
return;
}
try
{
StkPrce old = (StkPrce)stkBox.SelectedItem; //get selected item and covert it to StkPrce and store it
stkDlg newstkDlg;
newstkDlg = new stkDlg(old);// construct a StkDlg that takes the selected item as parameters
if (newstkDlg.ShowDialog() == DialogResult.OK)
{
StkPrce newStk = newstkDlg.stckprceobj();
stkBox.Items.RemoveAt(ndx); // remove the selected stock
stkBox.Items.Insert(ndx, newStk); // insert updated stock information at same location in the list
}
}
catch (InvalidCastException)
{
MessageBox.Show("Unable to update", "Error");
return;
}
}
private void opnMnuItm_Click(object sender, EventArgs e)
{
if (svedta) // check if the current data in the list box needs to be saved
{
if (MessageBox.Show(this, "Do you want to save the current data before opening a new file?", "Open", MessageBoxButtons.YesNo) == DialogResult.Yes)
{
sveMnuItm_Click(sender, e); // if yes is clicked and the users needs to save the data, call the save method
}
}
if (opnFleDlg.ShowDialog() == DialogResult.Cancel)
{
return;//if user selects cancel, return, otherwise execute the folllowing code
}
stkBox.Items.Clear();
opndfle = opnFleDlg.FileName; //get and save the file name
try
{
System.IO.StreamReader stkrdr = new System.IO.StreamReader(opndfle); //read the file
String[] stkfle; //create array
Char[] dl = { '\t' }; //delimit file by tab
String stklne = stkrdr.ReadLine(); //read the first line of the file
while (stklne != null) // keep reading until the line returns null(EOF)
{
stkfle = stklne.Split(dl); // seperate the delimited text
StkPrce stock = new StkPrce(); //create object
stock.cmpnyname = stkfle[0];
stock.stkabrv = stkfle[1];
stock.opnprce = Double.Parse(stkfle[2]);
stock.hghprce = Double.Parse(stkfle[3]);
stock.lwprce = Double.Parse(stkfle[4]);
stock.clsprce = Double.Parse(stkfle[5]);
String stringdate = stkfle[6];
DateTimeConverter dat = new DateTimeConverter();
// stock.dte = new DateTime(year, month, day);
stock.dte = (DateTime)dat.ConvertFromString(stringdate);
stkBox.Items.Add(stock); // add delimited text to the list box
stklne = stkrdr.ReadLine();
}
stkrdr.Close(); // close the file
stkrdr.Dispose(); // make sure the reader is fully released
Text = "Stock Market Data"; // reset the text
}
catch (Exception)
{
MessageBox.Show(this, "Unable to read file", "Error");
return;
}
}