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Finding CSS selector path for Selenium C#

I am new to Selenium C# automation. Tried finding on web but did not get any help.
The html code looks like this. I need to find the element and then click it using CSS. The site only runs on IE.
<tbody>
<tr class="t-state-selected">
<td>Purchased</td>
<td class="">768990192</td>

I know web links can disappear, but here are a few I use when trying to figure out how to locate elements using Selenium's C# WebDriver:
https://automatetheplanet.com/selenium-webdriver-locators-cheat-sheet/
https://saucelabs.com/resources/articles/selenium-tips-css-selectors
https://www.packtpub.com/mapt/book/web_development/9781849515740/1
The bottom line is that you're selecting by id, class, or XPath. Each of these can be tested directly on the page using the F12 browser tools. For example, to find the first comment on your question above, you could try this in the console:
$x("//div[#id='mainbar']//tbody[#class='js-comments-list']/tr")
Here's another SO post with a quick and dirty answer.
And here is the official documentation from Selenium on how to locate UI elements.

To click on the number 768990192 which is dynamic we have to construct a CssSelector as follows :
driver.FindElement(By.CssSelector("tr.t-state-selected td:nth-of-type(2)")).Click();

You're really not giving us much info to work. I will try my best to accommodate. Even though the presented HTML is not enough to give an indication of the format and you've not presented any code of your current solution.
string url = "https://www.google.com";
IWebDriver driver = new InternetExplorerDriver();
driver.Navigate().GoToUrl(url);
driver.FindElement(By.XPath("//tr[#class='t-state-selected']")).Click();
This little code snippet.
Creates a internet explorer driver.
Goes to the url of your choice.
And then clicks the table row that has a class that equals "t-state-selected'. Which my guess is all or none of the table rows.

Using google translate with my own

I am using google translate element: http://translate.google.com/translate_tools for my entire website. I place the code generated in the master file so it is available on every page. Now, I have a few page where I do not want to use google's translation but my own. I am able to prevent the google from not translating a certain control, but now I have two drop downs box showing on my page. How can I get rid of one? either catching the value of the language selected in the googles dropdown or by somehow passing my own dropdowns value to the google dropdown and trigger a change. I have not been able to do either of them. I would appreciate any help here.
Thanks,
Ratan

If you wan to hide or remove google translator from some of your website pages, follow the following steps.
i: Place your google translator code e.g in asp.net panel
<asp:Panel ID="pnl" runat="server">
google translator code
</asp:Panel>
ii: On load or pre render event of page where you want to hide google translator code use the following code.
MasterPage mstr = Page.Master;
Panel pnl = (Panel)mstr.FindControl("pnl");
pnl.Visible = false;
Hope this will help you.

calling a javascript function in C#

Hi i wanted to show or hide duplicate records according to query. So, I need to know how to call the javascript function from C# codebehind.
<a onclick="Grid1.insertRecord(); return false;" id="a2" href="javascript:">Save</a>
When I click save i need to show a popup which i have written in javascript.
if (!exist)//exists is the query
{
System.Web.UI.Control my = FindControl("a2");
a2.Attributes.Add("onclick", "retrun HideDuplicate()");
This line returns an error saying "a2 doesnot exist in current context."

Why not use an asp.net LinkButton? It has a server side Click event and is accessible from c# code-behind.

The basic <a> tag is not turned into a control by asp.net unless you add a runat="server" to it. Its then turned into a HtmlGenericControl.
<a onclick="Grid1.insertRecord(); return false;" id="a2" href="#" runat="server">Save</a>
This might work for you - its not clear if you have more than one of these links on the page (such as in a row of a gridview?) or if its just on there once.
Also the way you have used javascript is not following best practices but thats a discussion for another day :)

MSDN documentation for programatic creation of client side callbacks without postback with an example where the code behind is in C# might give a good overview of how it is supposed to work in general.
In your case, the corresponding code-behind should implement the interface 'ICallbackEventHandler' and the two methods it describes. In addition, you would need two more client side Javascript functions to prepare and handle the callback, besides the executor/invoker (in your case, a 'save' method). However one of the additional two Javascript functions could be registered in the codebehind, as the example shows.

Click an HTML link inside a WebBrowser Control

C# Visual Studio 2010
I am loading a complex html page into a webbrowser control. But, I don't have the ability to modify the webpage. I want to click a link on the page automatically from the windows form. But, the ID appears to be randomly generated each time the page is loaded (so I believe referencing the ID will not work).
This is the content of the a href link:
<a
id="u_lp_id_58547"
href="javascript:void(0)"
class="SGLeftPanelText" onclick="setStoreParams('cases;212', 212); window.leftpanel.onClick('cases_ss_733');return false; ">
My Assigned</a>
Is the anyway to click the link from C#?
Thanks!
UPDATE:
I feel like this is close but it is just not working:
HtmlElementCollection links = helpdeskWebBrowser.Document.Window.Frames["main_pending_events_frame"].Document.GetElementsByTagName("a");
MessageBox.Show(links.Count.ToString());
I have tried plugging in every single frame name and tried both "a" and "A" in the TagName field but just have not had any luck. I can just not find any links; the message box is always 0. What am I missing?

Something like this should work:
HtmlElement link = webBrowser.Document.GetElementByID("u_lp_id_58547")
link.InvokeMember("Click")
EDIT:
Since the IDs are generated randomly, another option may be to identify the links by their InnerText; along these lines.
HtmlElementCollection links = webBrowser.Document.GetElementsByTagName("A");
foreach (HtmlElement link in links)
{
if (link.InnerText.Equals("My Assigned"))
link.InvokeMember("Click");
}
UPDATE:
You can get the links within an IFrame using:
webBrowser.Document.Window.Frames["MyIFrame"].Document.GetElementsByTagName("A");

Perhaps you will have to isolate the link ID value using more of the surrounding HTML context as a "target" and then extract the new random ID.
In the past I have used the "HtmlAgilityPack" to easily parse "screen-scraped" HTML to isolate areas of interest within a page - this library seems to be easy to use and reliable.

Automated web browser?

For learning purposes I would like to automate some parts in a browser game, currently I am trying to fill out some simple text boxes, without any luck though. I've created a WebBrowser component on my form, loaded the website via it and tried this.
webBrowser1.Document.GetElementById("citizen_name").SetAttribute("", "myname");
When I click my "fill out text box" button nothing happens. The HTML part looks like this:
<input type="text" name="citizen_name" id="citizen_name" value="" class="field" tabindex="1" />
I am talking about the eRepublik.com game, appreciate any help.

Try this:
HtmlDocument document = this.webBrowser1.Document;
document.GetElementById("citizen_name").SetAttribute("value", "myname");

I usually take the following approach:
var someElem = webBrowser1.Document.GetElementById("some_id");
if (someElem != null)
{
someElem.InnerText = "Some value";
}
Some textareas of advanced editors cannot have their value set this way. To handle them I do something like the following:
someElem.Focus();
Windows.Forms.SendKeys.SendWait("Some value");

For this kind of problems there are much more suitable environments.
The easiest to use is definitely userscripts.
What exactly do you want to learn? How to test web apps, or how to develop them?

You can use of course simple javascript that you include in your page, or better yet, using Greasemonkey , so you don't modify the "client" code.
But greasemonkey would only be an option for Firefox, Opera and Chrome. If you really need a full blown cross browser automation test suite, you could use Selenium IDE , that allows to record or script a series of interactions with a web page, that can be automatically run in any of its supported browsers.