Confirmation message after clicking the ActionLink in MVC

Confirmation message after clicking the ActionLink in MVC using Razor

Controller

Create view for the ConfirmationDialog to show the confirmation message.Ifclick ok it will redirect ConfirmationDialog
view else it stay in index view

public ActionResult ConfirmationDialog()
{
return View();
}
From action create view as like below

View (index)

@{
ViewBag.Title = “Home Page”;
}

@Html.ActionLink(“Click to Confirm”, “Confirmation”, null, new { onclick = “return ConfirmationDialog()” })
<script type=”text/javascript”>
function ConfirmationDialog() {
if(confirm(“Are you sure to continue?”))
return true;
else
return false;
}
</script>

OUTPUT:

If you click ok, it will redirect to the Confirmation.cshtml view

SqlCommand.ExecuteNonQuery Method

Executes a Transact-SQL statement against the connection and returns the number of rows affec

JavaScript: Window Location

The window.location object can be written without the window prefix.

Some examples:

• location.href returns the href (URL) of the current page
• location.hostname returns the domain name of the web host
• location.pathname returns the path and filename of the current page
• location.protocol returns the web protocol used (http:// or https://)
• location.assign loads a new document

Do Not Declare String, Number, and Boolean as Objects!

When a JavaScript variable is declared with the keyword "new", the variable is created as an object:

var x = new String();          // Declares x as a String object
var y = new Number();          // Declares y as a Number object
var z = new Boolean();         // Declares z as a Boolean object

JavaScript: Window Screen

The window.screen object contains information about the user's screen.

---

Window Screen

The window.screen object can be written without the window prefix.

Properties:

• screen.width
• screen.height
• screen.availWidth
• screen.availHeight
• screen.colorDepth
• screen.pixelDepth

---

Window Screen Width

The screen.width property returns the width of the visitor's screen in pixels.

Example

Display the width of the screen in pixels:

"ScreenWidth: " + screen.width

Result will be:

Screen Width: 1024

Try it Yourself »

---

Window Screen Height

The screen.height property returns the height of the visitor's screen in pixels.

Example

Display the height of the screen in pixels:

"Screen Height: " + screen.height

Result will be:

Screen Height: 768

Try it Yourself »

---

Window Screen Available Width

The screen.availWidth property returns the width of the visitor's screen, in pixels, minus interface features like the Windows Taskbar.

Example

Display the available width of the screen in pixels:

"Available Screen Width: " + screen.availWidth

Result will be:

Available Screen Width: 1024

Try it Yourself »

---

Window Screen Available Height

The screen.availHeight property returns the height of the visitor's screen, in pixels, minus interface features like the Windows Taskbar.

Example

Display the available height of the screen in pixels:

"Available Screen Height: " + screen.availHeight

Result will be:

Available Screen Height: 728

Try it Yourself »

---

Window Screen Color Depth

The screen.colorDepth property returns the number of bits used to display one color.

All modern computers use 24 or 32 bits hardware to display 16,777,216 different colors ("True Colors").

Older computers used 16 bits, which gives a maximum of 65,536 different colors ("High Colors")

Very old computers, and old cell phones used 8 bits ("VGA colors").

Example

Display the color depth of the screen in bits:

"Screen Color Depth: " + screen.colorDepth

Result will be:

Screen Color Depth: 24

Try it Yourself »

	Some computers report 32. Most computers report 24. Both display "True Colors" (16,777,216 different colors).

---

Window Screen Pixel Depth

The screen.pixelDepth property returns the pixel depth of the screen.

Example

Display the pixel depth of the screen in bits:

"Screen Pixel Depth: " + screen.pixelDepth

Result will be:

Screen Pixel Depth: 24

Try it Yourself »

?: Operator (C# Reference)

Visual Studio 2013

The conditional operator (?:) returns one of two values depending on the value of a Boolean expression. Following is the syntax for the conditional operator.

condition ? first_expression : second_expression;

Remarks

The condition must evaluate to true or false. If condition is true, first_expression is evaluated and becomes the result. If condition is false, second_expression is evaluated and becomes the result. Only one of the two expressions is evaluated.

Either the type of first_expression and second_expression must be the same, or an implicit conversion must exist from one type to the other.

You can express calculations that might otherwise require an if-else construction more concisely by using the conditional operator. For example, the following code uses first an if statement and then a conditional operator to classify an integer as positive or negative.

int input = Convert.ToInt32(Console.ReadLine());
string classify;

// if-else construction.
if (input > 0)
    classify = "positive";
else
    classify = "negative";

// ?: conditional operator.
classify = (input > 0) ? "positive" : "negative";

The conditional operator is right-associative. The expression a ? b : c ? d : e is evaluated as a ? b : (c ? d : e), not as (a ? b : c) ? d : e.

The conditional operator cannot be overloaded.

Example

C#

class ConditionalOp
{
    static double sinc(double x)
    {
        return x != 0.0 ? Math.Sin(x) / x : 1.0;
    }

    static void Main()
    {
        Console.WriteLine(sinc(0.2));
        Console.WriteLine(sinc(0.1));
        Console.WriteLine(sinc(0.0));
    }
}
/*
Output:
0.993346653975306
0.998334166468282
1
*/

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