I've done quite a bit of searching (several hours actually) but I haven't been able to get this working. Basically, I have this button:
<asp:Button runat="server" Text="Go!" id="go" onClick="getDoc()" />
and this block of script:
<script type="c#" runat="server">
public void getDoc(object sender, EventArgs e) {
// Test to see if function was running (it's not...)
DocFrame.Attributes["src"] = "http://www.google.com";
// Get the current state of the dropdowns
String dropYear = (String)Year.SelectedValue;
String dropDiv = (String)Division.SelectedValue;
String dropControl = (String)Control.SelectedValue;
String dropQuart= (String)Quarter.SelectedValue;
// Get the Site where the list is
using (SPSite siteCol = new SPSite("http://portal/Corporate/IT/")) {
using (SPWeb web = siteCol.RootWeb){
// Get the list items we need
SPListItemCollection items = list.GetItems("Year", "Division", "Control", "Quarter");
SPListItem item = null;
// Loop through them until we find a matching everything
foreach (SPListItem it in items){
if(it.Year == dropYear && it.Division == dropDiv && it.Control == dropControl && it.Quarter == dropQuart){
item = it;
break;
}
}
// Assign the item as a string
String URL = (String)item["Title"];
// Set the iframe to the new URL
DocFrame.Attributes["src"] = URL;
}
}
}
It's all in the page where this is happening, please keep in mind that I've been using sharepoint for less than a week and have only ever coded in C++, so I could be doing everything horribly wrong. Anyway, it seems that getDoc() is never even getting called, so can anyone point out what I'm doing wrong?
Instead of
onClick="getDoc()"
you should do
OnClick="getDoc"
That's the proper way to wire an up an event.
By the way, you should consider following C# Naming Guidelines. If you were using better naming, it might look like this:
<asp:Button runat="server" Text="Go!" id="GoBtn" onClick="GoBtn_Click" />
Common practice convention is to append the event name after the ID of the control. It's not required, but it looks cleaner and other developers like to see that when they look at your code.
Also, DocFrame.Attributes["src"] = "http://www.google.com"; is not a good way to see if the function is running. It doesn't update the page in realtime, as the entire server side function executes, then the results are sent to the client. Instead, use your IDE's debugging tools to hook up to the server and set code breaks etc. Or what I do is have the code send me an email, I created a little utility library for that.
Related
I'm writing a visual studio extension based on the Concord Samples Hello World project. The goal is to let the user filter out stack frames by setting a list of search strings. If any of the search strings are in a stack frame, it is omitted.
I've got the filter working for a hardcoded list. That needs to be in a non-package-based dll project in order for the debugger to pick it up. And I have a vsix project that references that dll with an OptionPageGrid to accept the list of strings. But I can't for the life of me find a way to connect them.
On the debugger side, my code looks something like this:
DkmStackWalkFrame[] IDkmCallStackFilter.FilterNextFrame(DkmStackContext stackContext, DkmStackWalkFrame input)
{
if (input == null) // null input frame indicates the end of the call stack. This sample does nothing on end-of-stack.
return null;
if (input.InstructionAddress == null) // error case
return new[] { input };
DkmWorkList workList = DkmWorkList.Create(null);
DkmLanguage language = input.Process.EngineSettings.GetLanguage(new DkmCompilerId());
DkmInspectionContext inspection = DkmInspectionContext.Create(stackContext.InspectionSession, input.RuntimeInstance, input.Thread, 1000,
DkmEvaluationFlags.None, DkmFuncEvalFlags.None, 10, language, null);
string frameName = "";
inspection.GetFrameName(workList, input, DkmVariableInfoFlags.None, result => GotFrameName(result, out frameName));
workList.Execute();
CallstackCollapserDataItem dataItem = CallstackCollapserDataItem.GetInstance(stackContext);
bool omitFrame = false;
foreach (string filterString in dataItem.FilterStrings)
{
if (frameName.Contains(filterString))
{
omitFrame = true;
}
}
The CallstackCollapserDataItem is where I theoretically need to retrieve the strings from user settings. But I don't have access to any services/packages in order to e.g. ask for WritableSettingsStore, like in You've Been Haacked's Example. Nor can I get my OptionPageGrid, like in the MSDN Options Example.
The other thing I tried was based on this StackOverflow question. I overrode the LoadSettingsFromStorage function of my OptionPageGrid and attempted to set a static variable on a public class in the dll project. But if that code existed in the LoadSettingsFromStorage function at all, the settings failed to load without even entering the function. Which felt like voodoo to me. Comment out the line that sets the variable, the breakpoint hits normally, the settings load normally. Restore it, and the function isn't even entered.
I'm at a loss. I really just want to pass a string into my Concord extension, and I really don't care how.
Ok, apparently all I needed to do was post the question here for me to figure out the last little pieces. In my CallstackCollapserDataItem : DkmDataItem class, I added the following code:
private CallstackCollapserDataItem()
{
string registryRoot = DkmGlobalSettings.RegistryRoot;
string propertyPath = "vsix\\CallstackCollapserOptionPageGrid";
string fullKey = "HKEY_CURRENT_USER\\" + registryRoot + "\\ApplicationPrivateSettings\\" + propertyPath;
string savedStringSetting = (string)Registry.GetValue(fullKey, "SearchStrings", "");
string semicolonSeparatedStrings = "";
// The setting resembles "1*System String*Foo;Bar"
if (savedStringSetting != null && savedStringSetting.Length > 0 && savedStringSetting.Split('*').Length == 3)
{
semicolonSeparatedStrings = savedStringSetting.Split('*')[2];
}
}
vsix is the assembly in which CallstackCollapserOptionPageGrid is a DialogPage, and SearchStrings is its public property that's saved out of the options menu.
I am using HTMLElementCollection, HtmlElement to iterate through a website and using Get/Set attributes of a website HTML and returning it to a ListView. Is it possible to get values from website a and website b to return it to the ListView?
HtmlElementCollection oCol1 = oDoc.Body.GetElementsByTagName("input");
foreach (HtmlElement oElement in oCol1)
{
if (oElement.GetAttribute("id").ToString() == "search")
{
oElement.SetAttribute("value", m_sPartNbr);
}
if (oElement.GetAttribute("id").ToString() == "submit")
{
oElement.InvokeMember("click");
}
}
HtmlElementCollection oCol1 = oDoc.Body.GetElementsByTagName("tr");
foreach (HtmlElement oElement1 in oCol1)
{
if (oElement1.GetAttribute("data-mpn").ToString() == m_sPartNbr.ToUpper())
{
HtmlElementCollection oCol2 = oElement1.GetElementsByTagName("td");
foreach (HtmlElement oElement2 in oCol2)
{
if (oElement2 != null)
{
if (oElement2.InnerText != null)
{
if (oElement2.InnerText.StartsWith("$"))
{
string sPrice = oElement2.InnerText.Replace("$", "").Trim();
double dblPrice = double.Parse(sPrice);
if (dblPrice > 0)
m_dblPrices.Add(dblPrice);
}
}
}
}
}
}
As one of the comments mentioned the better approach would be to use HttpWebRequest to send a get request to www.bestbuy.com or whatever site. What it returns is the full HTML code (what you see) which you can then parse through. This kind of approach keeps you from seinding too many requests and getting blacklisted. If you need to click a button or type in a text field its best to mimic human input to avoid being blacklisted also. I would suggest injecting a simple javascript into the page header or body and execute it from the app to send a 'onClick' event from the button (which would then reply with a new page to parse or display) or to modify the text property of something.
this example is in c++/cx but it originally came from a c# example. the script sets the username and password text fields then clicks the login button:
String^ script = "document.GetElementById('username-text').value='myUserName';document.getElementById('password-txt').value='myPassword';document.getElementById('btn-go').click();";
auto args = ref new Platform::Collections::Vector<Platform::String^>();
args->Append(script);
create_task(wv->InvokeScriptAsync("eval", args)).then([this](Platform::String^ response){
//LOGIN COMPLETE
});
//notes: wv = webview
EDIT:
as pointed out the absolute best approach would be to get/request an api. I was surprised to see that site mason pointed out for bestbuy developers. Personally I have only tried to work with auto part stores who either laugh while saying I can't afford it or have no idea what I'm asking for and hang up (when calling corporate).
EDIT 2: in my code the site used was autozone. I had to use chrome developer tools (f12) to get the names of the username, password, and button name. From the developer tools you can also watch what is sent from your computer to the site/server. This allows you to recreate everything and mimic javascript input and actions using post/get with HttpWebRequest.
This question already has answers here:
Calling JavaScript Function From CodeBehind
(21 answers)
Closed 9 years ago.
I am trying to learn asp.net. Assuming that I have this code:
if (command.ExecuteNonQuery() == 0)
{
// JavaScript like alert("true");
}
else
{
// JavaScript like alert("false");
}
How to I can invoke JavaScript from C# code behind? How to do that by putting that JavaScript in Scripts directory which is created by default in MS Visual Studio?
Here is method I will use from time to time to send a pop message from the code behind. I try to avoid having to do this - but sometimes I need to.
private void LoadClientScriptMessage(string message)
{
StringBuilder script = new StringBuilder();
script.Append(#"<script language='javascript'>");
script.Append(#"alert('" + message + "');");
script.Append(#"</script>");
Page.ClientScript.RegisterStartupScript(this.GetType(), "messageScript", script.ToString());
}
You can use RegisterStartupScript to load a javascript function from CodeBehind.
Please note that javascript will only run at client side when the page is render at client's browser.
Regular Page
Page.ClientScript.RegisterStartupScript(this.GetType(), "myfunc" + UniqueID,
"myJavascriptFunction();", true);
Ajax Page
You need to use ScriptManager if you use ajax.
ScriptManager.RegisterStartupScript(Page, Page.GetType(), "myfunc" + UniqueID,
"myJavascriptFunction();", true);
Usually these "startupscripts" are handy for translations or passing settings to javascript.
Although the solution Mike provided is correct on the .Net side I doubt in a clean (read: no spaghetti code) production environment this is a good practice. It would be better to add .Net variables to a javascript object like so:
// GA example
public static string GetAnalyticsSettingsScript()
{
var settings = new StringBuilder();
var logged = ProjectContext.CurrentUser != null ? "Logged" : "Not Logged";
var account = Configuration.Configuration.GoogleAnalyticsAccount;
// check the required objects since it might not yet exist
settings.AppendLine("Project = window.Project || {};");
settings.AppendLine("Project.analytics = Project.analytics || {};");
settings.AppendLine("Project.analytics.settings = Project.analytics.settings || {};");
settings.AppendFormat("Project.analytics.settings.account = '{0}';", account);
settings.AppendLine();
settings.AppendFormat("Project.analytics.settings.logged = '{0}';", logged);
settings.AppendLine();
return settings.ToString();
}
And then use the common Page.ClientScript.RegisterStartupScript to add it to the HTML.
private void RegisterAnalyticsSettingsScript()
{
string script = GoogleAnalyticsConfiguration.GetAnalyticsSettingsScript();
if (!string.IsNullOrEmpty(script))
{
Page.ClientScript.RegisterStartupScript(GetType(), "AnalyticsSettings", script, true);
}
}
On the JavaScript side it might look like this:
// IIFE
(function($){
// 1. CONFIGURATION
var cfg = {
trackingSetup: {
account: "UA-xxx-1",
allowLinker: true,
domainName: "auto",
siteSpeedSampleRate: 100,
pluginUrl: "//www.google-analytics.com/plugins/ga/inpage_linkid.js"
},
customVariablesSetup: {
usertype: {
slot: 1,
property: "User_type",
value: "Not Logged",
scope: 1
}
}
};
// 2. DOM PROJECT OBJECT
window.Project = window.Project || {};
window.Project.analytics = {
init: function(){
// loading ga.js here with ajax
},
activate: function(){
var proj = this,
account = proj.settings.account || cfg.trackingSetup.account,
logged = proj.settings.logged || cfg.customVariablesSetup.usertype.value;
// override the cfg with settings from .net
cfg.trackingSetup.account = account;
cfg.customVariablesSetup.usertype.value = logged;
// binding events, and more ...
}
};
// 3. INITIALIZE ON LOAD
Project.analytics.init();
// 4. ACTIVATE ONCE THE DOM IS READY
$(function () {
Project.analytics.activate();
});
}(jQuery));
The advantage with this setup is you can load an asynchronous object and override the settings of this object by .Net. Using a configuration object you directly inject javascript into the object and override it when found.
This approach allows me to easily get translation strings, settings, and so on ...
It requires a little bit knowledge of both.
Please note the real power of tis approach lies in the "direct initialization" and "delayed activation". This is necessary as you might not know when (during loading of the page) these object are live. The delay helps overriding the proper objects.
This might be a long shot, but sometimes I need a c# property/value from the server side displaying or manipulated on the client side.
c# code behind page
public string Name {get; set;}
JavaScript on Aspx page
var name = '<%=Name%>';
Populating to client side is generally easier, depending on your issue. Just a thought!
So I am starting to learn how to use XML data within a app and decided to use some free data to do this however I cannot for the life of me get it working this is my code so far. (I have done a few apps with static data before but hey apps are designed to use the web right? :p)
public partial class MainPage : PhoneApplicationPage
{
List<XmlItem> xmlItems = new List<XmlItem>();
// Constructor
public MainPage()
{
InitializeComponent();
LoadXmlItems("http://hatrafficinfo.dft.gov.uk/feeds/datex/England/CurrentRoadworks/content.xml");
test();
}
public void test()
{
foreach (XmlItem item in xmlItems)
{
testing.Text = item.Title;
}
}
public void LoadXmlItems(string xmlUrl)
{
WebClient client = new WebClient();
client.OpenReadCompleted += (sender, e) =>
{
if (e.Error != null)
return;
Stream str = e.Result;
XDocument xdoc = XDocument.Load(str);
***xmlItems = (from item in xdoc.Descendants("situation id")
select new XmlItem()
{
Title = item.Element("impactOnTraffic").Value,
Description = item.Element("trafficRestrictionType").Value
}).ToList();***
// close
str.Close();
// add results to the list
xmlItems.Clear();
foreach (XmlItem item in xmlItems)
{
xmlItems.Add(item);
}
};
client.OpenReadAsync(new Uri(xmlUrl, UriKind.Absolute));
}
}
I am basically trying to learn how to do this at the moment as I am intrigued how to actually do it (I know there are many ways but ATM this way seems the easiest) I just don't get what the error is ATM. (The bit in * is where it says the error is)
I also know the display function ATM is not great (As it will only show the last item) but for testing this will do for now.
To some this may seem easy, as a learner its not so easy for me just yet.
The error in picture form:
(It seems I cant post images :/)
Thanks in advance for the help
Edit:
Answer below fixed the error :D
However still nothing is coming up. I "think" it's because of the XML layout and the amount of descendants it has (Cant work out what I need to do being a noob at XML and pulling it from the web as a data source)
Maybe I am starting too complicated :/
Still any help/tips on how to pull some elements from the feed (As there all in Descendants) correctly and store them would be great :D
Edit2:
I have it working (In a crude way) but still :D
Thanks Adam Maras!
The last issue was the double listing. (Adding it to a list, to then add it to another list was causing a null exception) Just using the 1 list within the method solved this issue, (Probably not the best way of doing it but it works for now) and allowed for me to add the results to a listbox until I spend some time working out how to use ListBox.ItemTemplate & DataTemplate to make it look more appealing. (Seems easy enough I say now...)
Thanks Again!!!
from item in xdoc.Descendants("situation id")
// ^
XML tag names can't contain spaces. Looking at the XML, you probably just want "situation" to match the <situation> elements.
After looking at your edit and further reviewing the XML, I figured out what the problem is. If you look at the root element of the document:
<d2LogicalModel xmlns="http://datex2.eu/schema/1_0/1_0" modelBaseVersion="1.0">
You'll see that it has a default namespace applied. The easiest solution to your problem will be to first get the namespsace from the root element:
var ns = xdoc.Root.Name.Namespace;
And then apply it wherever you're using a string to identify an element or attribute name:
from item in xdoc.Descendants(ns + "situation")
// ...
item.Element(ns + "impactOnTraffic").Value
item.Element(ns + "trafficRestrictionType").Value
One more thing: <impactOnTraffic> and <trafficRestrictionType> aren't direct children of the <situation> element, so you'll need to change that code as well:
Title = items.Descendants(ns + "impactOnTraffic").Single().Value,
Description = item.Descendants(ns + "trafficRestrictionType").Single().Value
How can I bind data to YUI Treeview control http://developer.yahoo.com/yui/examples/treeview/default_tree.html
here is sample JavaScript code that have been used in the above URL
<div id="treeDiv1">
</div>
<script type="text/javascript">
var tree;
(function() {
function treeInit() {
buildRandomTextNodeTree();
}
function buildRandomTextNodeTree() {
tree = new YAHOO.widget.TreeView("treeDiv1");
for (var i = 0; i < 5; i++) {
var tmpNode = new YAHOO.widget.TextNode("label-" + i, tree.getRoot(), false);
buildLargeBranch(tmpNode);
}
tree.draw();
}
function buildLargeBranch(node) {
if (node.depth < 8) {
YAHOO.log("buildRandomTextBranch: " + node.index, "info", "example");
for (var i = 0; i < 8; i++) {
new YAHOO.widget.TextNode(node.label + "-" + i, node, false);
}
}
}
YAHOO.util.Event.onDOMReady(treeInit);
})();
</script>
The problem is, YUI treeview control is binded in javascript, but I want to bind in C# code, because I need to get data from Database, here is how I am binding data to asp.net treeview control
if (dsSalesRepresent.Tables[0].Rows.Count > 0)
{
dsSalesRepresent.Relations.Add("Children", dsSalesRepresent.Tables[0].Columns["NodeId"], dsSalesRepresent.Tables[0].Columns["ParentId"]);
trvSalesRepresent.Nodes.Clear();
foreach (DataRow masterRow in dsSalesRepresent.Tables[0].Rows)
{
if (masterRow["ParentId"].ToString() == "")
{
TreeNode masterNode = new TreeNode((String)masterRow["JobTitle"], Convert.ToString(masterRow["NodeId"]));
trvSalesRepresent.Nodes.Add(masterNode);
TreeNode FirstchildNode = new TreeNode((String)masterRow["UserName"], Convert.ToString(masterRow["ParentId"]));
masterNode.ChildNodes.Add(FirstchildNode);
foreach (DataRow childRow in masterRow.GetChildRows("Children"))
{
TreeNode childNode = new TreeNode((String)childRow["UserName"], Convert.ToString(childRow["ParentId"]));
masterNode.ChildNodes.Add(childNode);
}
}
}
trvSalesRepresent.ExpandAll();
}
All of my comments are assuming you mean WebForms and not MVC.
The YUI framework is purely client side. It is intended to be able to used with any website regardless of the server platform. The ASP.NET tree view is used only with ASP.Net and so doesn't have that limitation. It is a server control and so it actually emits everything the client needs even though it looks like you are binding directly to it.
A couple of options, but there's lots:
Use an AJAX/JSON to call back to your website to get the data in JSON format which you can then handle client side.
Just the way that you're asking this question makes me think that you aren't that familiar with "real" AJAX, so that's why I've got the next option:
Emit the Java YUI code directly from your code behind. Javascript is just more text that the server sends to the client and you can dynamically emit it just like any other part of your client script. ScriptManager can help here as far as getting it to the right spot on the page, but you could theoretically do it with just a place holder or literal control. Alternately, you could put most of the code in the markup and use <% %> to replace the parts that need to come from the server side. Either way, you need to write all the code to render your tree, then figure out the "Replaceable" bits and supply them from the server side code. BUT make sure that none of the info coming back is data that was entered by an end user otherwise you could end up with a Cross Site Scripting vulnerability.