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Xamarin forms image import to new page

I want to import an camera/Gallary image into a page, not into the App() page, the function ShouldTakePicture() doesn't work, can anyone provide a sample code where I can import image to another page and display in a listview?
This import image was done form code in the link http://xforms-kickstarter.com/#camera
However when doing in another page, the MainActivity throws bellow error
Severity Code Description Project File Line Suppression State
Error CS1503 Argument 1: cannot convert from 'Gallary2.Injury' to 'Xamarin.Forms.Application' Gallary2.Droid C:\Users\haris\Documents\Visual Studio 2015\Projects\Gallary2\Gallary2\Gallary2.Droid\MainActivity.cs 32 Active
can anyone help me with image import demo project in Xamarin Forms? (Only c# please, we are not making changes in XAML )

It sounds like you created a new page and in that new page you created a ShouldTakePicture property of type Action. The reason that the code is now failing, is because of this line in the iOS and Android projects:
(Xamarin.Forms.Application.Current as App).ShouldTakePicture += () => {
That line is expecting the ShouldTakePicture property to be in your App class, but it has been moved to your new page.
To fix this, you could either move that property back into your App class and then reference it from your new page by calling Command = new Command(o => App.ShouldTakePicture()),.
A better way to fix this would be to use Xamarin's DependencyService, info about that is here. If you need help setting up the DependencyService, let me know.

How does FindViewById() work?

I'm new in mobile app development. I'm using Xamarin to develop Android applications. In the hello world app in the OnCreate method I see the following code:
Button button = FindViewById<Button>(Resource.Id.MyButton);
So I'm trying to create my own button the same way. I create the button in the designer and inside OnCreate method put the line:
Button myOwnBtn = FindViewById<Button>(Resource.Id.MyOwnBtn);
That gives me an error that there is no MyOwnBtn. Then I'm looking the code of Id class and see there a line like:
public const int MyButton=2123344112;
If I put there the line:
public const int MyOwnBtn=2123344113;
Everything works fine. But as I understand it should be generated automatically or it will be a little bit difficult to put there a unique number for each control.
Can anybody tell me what I am doing wrong? And how does FindViewById() work?

You have to give the id MyOwnBtn to the Button that you created in the designer.
findViewById is a method of the View class and it looks for a child view having the id that you provided in the argument.
From official documentation:
Look for a child view with the given id. If this view has the given id, return this view.

MyButton id is not a const value, It will change every launch.

The Activity or ViewGroup's findViewById() method returns a view that already has an id. The findViewById() method should be used in conjunction with XML layouts to provide a reference to the View that was defined in the XML file.
Edit: Not entirely sure if my answer is relevant to Xamarin. I apologize if I have mislead people, I am referring to Java Android application development.

When you declare a button in your .xml file, you should set an id for it (Usually it is done using string.xml file). After that, R.java will be updated automatically and set a number to your declared id and you can access your button by that id like what you have done.

It will try to find it from the XML file that you inflate. So make sure you inflate the correct xml file. This code inflates the xml:
SetContentView (Resource.Layout.MainLayout);
Even if you got the correct id created in a xml file, if you don't inflate it first, the system won't be able to find that view since it is not inflated.

How do I cast an icon from a resource file to an image for use on a button?

I'm trying to use an icon that I've added as a resource as the image on a button. I know it's possible because I can do it in other projects through the designer. However, I'm trying to do this with code. I added the icon as a resource to my project by following the steps in the accepted answer to this question. The resource is named CancelButtonIcon.
Now, I'm trying to add that icon as the image on a standard button with this code:
this.CancelButton.Image = (System.Drawing.Image)Properties.Resources.CancelButtonIcon;
However, I get an error message:
Cannot convert type 'System.Drawing.Icon' to 'System.Drawing.Image'
In the code that Visual Studio automatically generates when I use the designer, it looks like this:
((System.Drawing.Image)(resources.GetObject("SaveButton.Image")));
which results from manually adding a resource through the Properties window. How can I convert this icon resource to an image so it can be used on the button? Adding it through the designer is not an option (this button is created programmatically and thus isn't present in the designer).

You can use the Icon.ToBitmap method for this purpose. Note that a Bitmap is an Image.
CancelButton.Image = Properties.Resources.CancelButtonIcon.ToBitmap();

Not sure why, but any time I tried using the accepted answer's approach, the .ToBitmap() call was giving me array index out of bounds exceptions. I solved this by doing it this way instead:
System.Drawing.Icon.FromHandle(Properties.Resources.CancelButtonIcon.Handle).ToBitmap();

Opening new tab using a link with querystring variable?

First of all, I am entirely new to web development, so I apologize in advance if this question is overly simple (although I did do the prerequisite googling before I posted).
The problem I am having is that I would like to open a new tab via a link button or link on my page. I need to append a query string variable from the page onto the end of the reference, because it is passing a parameter to a report.
I've successfully passed the parameter and opened the report in the same tab using this code:
protected void lbSummary_OnClick(object sender, CommandEventArgs e)
{
Response.Redirect("http://myreportserverURL&rs:Command=Render&Year="+YearID);
}
And I've successfully opened the report in a new tab without passing the parameter with this code:
Report Name
I would prefer to do both. One important note is that opening a new window, instead of a new tab, is not what I need. I do understand that this is somewhat dependant on browser use, but for this project I can assume that users will be on IE8.
Is this possible? Any suggestions would be greatly appreciated.

You can use asp.net HyperLink control where you can set it's NavigateUrl in code-behind to whatever link you want including your querystring in there.
You can set it's Target Property as per you need.

Set target="_tab" this will open link in new tab

ASP.Net Hyperlink navigation URL not including server name

This might be a ridiculously easy question, but it has me stumped. I have a web form where I'm trying to create a hyperlink in the code behind to a file server share, e.g. file://myServer/Shared/, but when the page is rendered, the link doesn't include the server name, i.e. file:///Shared/. I don't know why this happens. Any help or insight is appreciated.
UPDATE:
Sure, here is the snippet where the link is being set.
//The link is embedded in a table
HyperLink link = (HyperLink)e.Row.Cells[1].Controls[0];
link.NavigateUrl = #"file://myServer/Shared/";
As a test, I assigned the link to a string value and the link prints the expected url.
string foo = link.NavigateUrl;
//Displays this
"file://myServer/Shared/"
I don't know why this doesn't appear when the link is rendered in the final page.
UPDATE 2:
Ok, so I know I have to set the absolute path in the code-behind, I thought that's what I was doing, but it still won't render correctly.
UPDATE 3:
I followed pjacobs suggestion about setting the test property and it was actually a step in the right direction. I have the following:
link.Text = "link text";
Now the link gets rendered as follows: file:///myServer/Shared. I'm almost there except it gives the extra '/' in front of the server name. I'll keep playing with it, this seems like it should be so simple, I don't understand why ASP.Net renders the URL differently.

You have to set the Text property of the HyperLink... link.Text = "whatever"

Are the resources inside the project? If so:
you need to use ResolveUrl to resolve the "web location" of the resource.
http://msdn.microsoft.com/en-us/library/system.web.ui.control.resolveurl.aspx
if you're using an asp.net control you shouldn't need to use the resolve url, but you need to refer to the location of the file relative to the path of the project.
If not:
Did you give the proper read account to ASP.NET process?
Use a virtual directory?
http://www.dotnetspider.com/tutorials/AspNet-Tutorial-86.aspx