void ShowCraigsListParsedRow(CraigsListResult parsedRow)
{
string result = string.Empty;
// See if sale posting includes picture
result += (parsedRow.hasPicture) ? "Sale posting includes picture\r\n" : "Sale posting does *NOT* include picture\r\n";
// Show the date of posting
result += string.Format("Date of posting is: {0}\r\n", parsedRow.date);
// Show price of posting
result += string.Format("Posted price: {0}\r\n", parsedRow.price);
// Show description
result += string.Format("Title of posting: {0}\r\n", parsedRow.description);
// Show hyperlink
result += string.Format("Link to posting: {0}\r\n", parsedRow.hyperlink);
// Show location
result += string.Format("Location of item: {0}\r\n", parsedRow.location);
// Add a blank line
result += "\r\n";
ResultsTextbox.AppendText(result);
}
void ShowProgress(int progress)
{
ResultsTextbox.AppendText(".");
if (0 < progress)
{
ResultsTextbox.AppendText(progress + "\n\r");
}
}
private async void CalculateButton_Click(object sender, EventArgs e)
{
ResultsTextbox.Clear();
cancelRequested = false;
int limit = int.Parse(LimitTextBox.Text);
for (int i = 4; i <= limit; i++)
{
if (cancelRequested)
{
break;
}
int temp = i;
string result = await Task.Run(() => GetPair(temp));
ResultsTextbox.AppendText(result);
}
ResultsTextbox.AppendText(cancelRequested ? "Cancelled" : "Done");
}
/// <summary>
/// Sends a query to CraigsList. Assumes that validation for input has already been done.
/// </summary>
void GetCraigsListResult(string keyword, string maxPrice)
{
// Set up default query
string query = string.Format("query={0}", keyword);
// Include asking for maxprice
if (maxPrice != string.Empty)
{
//format = rss &
query = string.Format("{0}&max_price={1}", query, maxPrice);
this.maxPrice = Convert.ToInt32(maxPrice);
hasMaxPrice = true;
}
string inputURL = string.Format("https://seattle.craigslist.org/search/sss?{0}", query);
string result = string.Empty;
ResultsTextbox.Clear();
ResultsTextbox.AppendText("Loading");
worker.DoWork += delegate(Object s, DoWorkEventArgs args)
{
result = GetWebPage(inputURL);
};
worker.ProgressChanged += delegate(object s, ProgressChangedEventArgs args)
{
ShowProgress(args.ProgressPercentage);
};
worker.RunWorkerCompleted += delegate(Object s, RunWorkerCompletedEventArgs args)
{
if (!isCancelled)
{
ParseCraigsListResult(result);
}
};
worker.RunWorkerAsync();
}
void ReleaseDesignerOutlets()
{
if (BitView != null)
{
BitView.Dispose();
BitView = null;
}
if (ClearButton != null)
{
ClearButton.Dispose();
ClearButton = null;
}
if (CS_Label != null)
{
CS_Label.Dispose();
CS_Label = null;
}
if (Input1Binary != null)
{
Input1Binary.Dispose();
Input1Binary = null;
}
if (Input2Binary != null)
{
Input2Binary.Dispose();
Input2Binary = null;
}
if (InputLabel1 != null)
{
InputLabel1.Dispose();
InputLabel1 = null;
}
if (InputNumber2 != null)
{
InputNumber2.Dispose();
InputNumber2 = null;
}
if (InputTextbox1 != null)
{
InputTextbox1.Dispose();
InputTextbox1 = null;
}
if (InputTextbox2 != null)
{
InputTextbox2.Dispose();
InputTextbox2 = null;
}
if (Results != null)
{
Results.Dispose();
Results = null;
}
if (ResultsTextbox != null)
{
ResultsTextbox.Dispose();
ResultsTextbox = null;
}
if (SegementedControl != null)
{
SegementedControl.Dispose();
SegementedControl = null;
}
if (TypeLabel != null)
{
TypeLabel.Dispose();
TypeLabel = null;
}
}
void ParseCraigsListResult(string result)
{
ResultsTextbox.Clear();
List <CraigsListResult> newResults = new List <CraigsListResult>();
CraigsListResultCollection previousCraigsListResults = GetAllPreviousCraigsListResult();
CraigsListResult latestCraigsListResult = null;
//if (null != previousCraigsListResults)
//{
// latestCraigsListResult = previousCraigsListResults.CraigsListResult[0];
//}
//ClearPreviousCraigsListResult();
string rowPattern = "<li class=\"result-row\"";
string[] rows = Regex.Split(result, rowPattern);
string spanPattern = "<p class=\"result-info\">";
foreach (string row in rows)
{
if (row.Contains(spanPattern))
{
string temp = "<li " + row.Trim();
// if row doesn't end with </li> clear it
if (!temp.EndsWith("</li>"))
{
temp = temp.Substring(0, temp.IndexOf("</li>") + 5);
}
XmlDocument xml = new XmlDocument();
xml.LoadXml(temp);
CraigsListResult parsedRow = ParseCraigsListRow(xml);
if (parsedRow == latestCraigsListResult)
{
ResultsTextbox.AppendText("No more new results were found.");
break;
}
int setPrice = 0;
try
{
setPrice = Convert.ToInt32(parsedRow.price);
}
catch (Exception)
{
setPrice = -1;
}
if (maxPrice > setPrice)
{
ShowCraigsListParsedRow(parsedRow);
newResults.Add(parsedRow);
}
}
}
//SaveCraigsListResult(previousCraigsListResults);
}
private void CancelButton_Click(object sender, RoutedEventArgs e)
{
worker.CancelAsync();
isCancelled = true;
ResultsTextbox.AppendText("Cancelled!");
}
