/// <summary>
/// Handles the click event of btnAdd
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnAdd_Click(object sender, RoutedEventArgs e)
{
// Checks if textbox is empty.
if(!string.IsNullOrWhiteSpace(txtSearchString.Text))
{
//Replaces all whitespaces with '%', for us to use in queryURL.
searchNoWhiteSpaces = txtSearchString.Text.Replace(" ", "%");
//Creates a new FeedItem.
FeedItem fItem = new FeedItem(txtSearchString.Text, searchNoWhiteSpaces);
//Serializes the FeedItem.
string json = JsonConvert.SerializeObject(fItem);
//Checks if our file already exists.
if (File.Exists(CONSTANTS.FEEDITEMPATH + "FeedItem.json"))
{
//File.AppendAllText(CONSTANTS.FEEDITEMPATH + "FeedItem.json", json + ",");
fileData = File.ReadAllText(CONSTANTS.FEEDITEMPATH + "FeedItem.json");
//Here we check if our document ends with ']'
if (fileData.EndsWith("]"))
{
//If it ends with ']', then remove it, and replace it with ','
fileData = fileData.Remove(fileData.Length - 1);
fileData = fileData + ",";
//Write to our file again.
File.WriteAllText(CONSTANTS.FEEDITEMPATH + "FeedItem.json", fileData);
}
File.AppendAllText(CONSTANTS.FEEDITEMPATH + "FeedItem.json", json + ",");
}
else
{
//If our file doesn't exists already, then we'll have to start our file with a ']', to have a valid JSON
File.AppendAllText(CONSTANTS.FEEDITEMPATH + "FeedItem.json", "[");
File.AppendAllText(CONSTANTS.FEEDITEMPATH + "FeedItem.json", json + ",");
}
//Sets the dialogresult to true
DialogResult = true;
//Closes the windows.
this.Close();
}
}