/*
* This function is called when prevous or next is clicked
* It grabs the results of the page that you are moving to
* and calls populateHtml to display the results.
*/
public void Tabify(bool isprevious)
{
//when previous is clicked and you are not on the first page then go to previous tab
if (isprevious && Convert.ToInt32(Session["Page"]) != 0)
{
Session["Page"] = Convert.ToInt32(Session["Page"]) - 1;
}
//when next is clicked then go to the next tab of results
else if (!isprevious)
{
Session["Page"] = Convert.ToInt32(Session["Page"]) + 1;
}
string query = api + Session["Query"] + "&start=" + (Convert.ToInt32(Session["Page"]) * 10 + 1).ToString();
string json = string.Empty;
try
{
//get the results of the new tab
json = new WebClient().DownloadString(query);
SearchObject.Rootobject searchObj = JsonConvert.DeserializeObject <SearchObject.Rootobject>(json);
var results = Get_Results(searchObj);
populateHtml(results);
}
catch
{
}
UpdateInputs();
}
/*
* This function gets results from google api and stores it as list of objects
* and calls the populateHtml function.
*/
protected void Search(object sender, EventArgs e)
{
if (!string.IsNullOrWhiteSpace(SearchQuery.Text))
{
Session["Page"] = 0;
Session["Query"] = SearchQuery.Text.Replace(' ', '+');
string query = api + Session["Query"];
string json = string.Empty;
try
{
json = new WebClient().DownloadString(query);
SearchObject.Rootobject searchObj = JsonConvert.DeserializeObject <SearchObject.Rootobject>(json);
results = Get_Results(searchObj);
Session["MaxPageCount"] = Math.Ceiling(Convert.ToDecimal(searchObj.searchInformation.totalResults) / 10);
if (Convert.ToInt32(searchObj.searchInformation.totalResults) != 0)
{
totalResults.Visible = true;
totalResults.Text = $"Total Results: {searchObj.searchInformation.totalResults}";
}
else
{
totalResults.Text = $"No Results Found";
}
populateHtml(results);
}
catch
{
}
UpdateInputs();
}
}
/*
* This function takes the objects generated from the json file and
* compresses them into new objects with only the required fields.
*/
protected List <Result> Get_Results(SearchObject.Rootobject searchObj)
{
//Extract all of the necessary result specific data from the search result object
List <Result> value = new List <Result>();
try {
if (searchObj != null)
{
if (searchObj.items != null)
{
for (int i = 0; i < searchObj.items.Length; i++)
{
Result retrieved = new Result(searchObj.items[i].title, searchObj.items[i].link, searchObj.items[i].htmlSnippet
, searchObj.items[i].displayLink);
value.Add(retrieved);
}
}
}
}
catch (NullReferenceException ex)
{
return(new List <Result>());
}
return(value);
}
