In ASP.NET Razor syntax, you can use VB.NET instead of C# if you prefer. Here's how you can declare and use variables in ASP.NET Razor views using VB.NET syntax:
Example
<!DOCTYPE html>
<html>
<head>
<title>VB.NET Variables in Razor Syntax</title>
</head>
<body>
@{
' Declare variables
Dim userName As String = "John"
Dim age As Integer = 30
Dim isLoggedIn As Boolean = True
Dim items As List(Of String) = New List(Of String)() From {"Item 1", "Item 2", "Item 3"}
' You can also use the ViewBag to pass data from the controller
ViewBag.Message = "Welcome to my website!"
}
<h1>Welcome, @userName!</h1>
<p>Your age is @age years old.</p>
@If isLoggedIn Then
<p>You are currently logged in.</p>
Else
<p>You are not logged in.</p>
End If
<h2>Items List:</h2>
<ul>
@For Each item As String In items
<li>@item</li>
Next
</ul>
<p>@ViewBag.Message</p>
</body>
</html>
In this example:
Dim keyword.@{ ... }.@variableName.If...Then...Else can be used to control the flow of HTML rendering.For Each can be used to iterate over collections and generate dynamic content.ViewBag can be used to pass data from the controller to the view.This example demonstrates how you can use VB.NET syntax to work with variables in ASP.NET Razor views.
@{ ' Declare variables Dim greeting As String = "Hello, world!" Dim age As Integer = 30 Dim pi As Double = 3.14 Dim isLoggedIn As Boolean = True Dim currentDate As Date = Date.Now Dim items As List(Of String) = New List(Of String)() From {"Item 1", "Item 2", "Item 3"} Dim person As Object = New With {.Name = "John", .Age = 30} Dim dynamicVar As Object = "Hello" Dim nullableInt As Integer? = Nothing }Sure, here's how you can demonstrate various data types using tables in ASP.NET Razor views:
Example
<!DOCTYPE html>
<html>
<head>
<title>Data Types in ASP.NET Razor</title>
</head>
<body>
@{
' Declare variables
Dim greeting As String = "Hello, world!"
Dim age As Integer = 30
Dim pi As Double = 3.14
Dim isLoggedIn As Boolean = True
Dim currentDate As Date = Date.Now
Dim items As List(Of String) = New List(Of String)() From {"Item 1", "Item 2", "Item 3"}
Dim person As Object = New With {.Name = "John", .Age = 30}
Dim dynamicVar As Object = "Hello"
Dim nullableInt As Integer? = Nothing
}
<h1>Data Types in ASP.NET Razor</h1>
<table border="1">
<tr>
<th>Data Type</th>
<th>Example</th>
</tr>
<tr>
<td>String</td>
<td>@greeting</td>
</tr>
<tr>
<td>Integer</td>
<td>@age</td>
</tr>
<tr>
<td>Double/Decimal</td>
<td>@pi</td>
</tr>
<tr>
<td>Boolean</td>
<td>@isLoggedIn</td>
</tr>
<tr>
<td>Date/DateTime</td>
<td>@currentDate</td>
</tr>
<tr>
<td>List</td>
<td>
<ul>
@For Each item As String In items
<li>@item</li>
Next
</ul>
</td>
</tr>
<tr>
<td>Object</td>
<td>@person.Name, @person.Age</td>
</tr>
<tr>
<td>Dynamic</td>
<td>@dynamicVar</td>
</tr>
<tr>
<td>Nullable Types</td>
<td>@If nullableInt.HasValue Then nullableInt.ToString() Else "Null"</td>
</tr>
</table>
</body>
</html>
| Data Type | Example |
|---|---|
| String | @greeting |
| Integer | @age |
| Double/Decimal | @pi |
| Boolean | @isLoggedIn |
| Date/DateTime | @currentDate |
| List |
|
| Object | @person.Name, @person.Age |
| Dynamic | @dynamicVar |
| Nullable Types | @If nullableInt.HasValue Then nullableInt.ToString() Else "Null" |
In this example:
<ul>) within a table cell.Certainly! Here's how you can demonstrate different operators using tables in ASP.NET Razor views:
Example
<!DOCTYPE html>
<html>
<head>
<title>Operators in ASP.NET Razor</title>
</head>
<body>
@{
' Declare variables
Dim a As Integer = 10
Dim b As Integer = 5
Dim str1 As String = "Hello"
Dim str2 As String = "World"
Dim isLoggedIn As Boolean = True
}
<h1>Operators in ASP.NET Razor</h1>
<table border="1">
<tr>
<th>Operator</th>
<th>Example</th>
<th>Result</th>
</tr>
<tr>
<td>Arithmetic (+, -, *, /, %)</td>
<td>@a + @b</td>
<td>@(a + b)</td>
</tr>
<tr>
<td>Comparison (==, !=, >, <, >=, <=)</td>
<td>@str1 = str2</td>
<td>@(str1 = str2)</td>
</tr>
<tr>
<td>Logical (&&, ||, !)</td>
<td>@isLoggedIn</td>
<td>@(Not isLoggedIn)</td>
</tr>
<tr>
<td>Conditional (?:)</td>
<td>@If isLoggedIn Then "Logged In" Else "Logged Out"</td>
<td>@If isLoggedIn Then "Logged In" Else "Logged Out"</td>
</tr>
<tr>
<td>String Concatenation (+)</td>
<td>@str1 + " " + str2</td>
<td>@(str1 + " " + str2)</td>
</tr>
</table>
</body>
</html>
| Operator | Example | Result |
|---|---|---|
| Arithmetic (+, -, *, /, %) | @a + @b | @(a + b) |
| Comparison (==, !=, >, <, >=, <=) | @str1 = str2 | @(str1 = str2) |
| Logical (&&, ||, !) | @isLoggedIn | @(Not isLoggedIn) |
| Conditional (?:) | @If isLoggedIn Then "Logged In" Else "Logged Out" | @If isLoggedIn Then "Logged In" Else "Logged Out" |
| String Concatenation (+) | @str1 + " " + str2 | @(str1 + " " + str2) |
Sure, here's how you can demonstrate converting data types with a table in ASP.NET Razor views:
Example
<!DOCTYPE ht
<head>
<title>Converting Data Types in ASP.NET Razor</title>
</head>
<body>
@{
' Declare variables
Dim intValue As Integer = 10
Dim doubleValue As Double = 3.14
Dim strValue As String = "20"
Dim boolValue As Boolean = True
}
<h1>Converting Data Types in ASP.NET Razor</h1>
<table border="1">
<tr>
<th>Original Value</th>
<th>To Integer</th>
<th>To Double</th>
<th>To String</th>
<th>To Boolean</th>
</tr>
<tr>
<td>@intValue</td>
<td>@Convert.ToInt32(intValue)</td>
<td>@Convert.ToDouble(intValue)</td>
<td>@intValue.ToString()</td>
<td>Error: Cannot convert integer to boolean</td>
</tr>
<tr>
<td>@doubleValue</td>
<td>@Convert.ToInt32(doubleValue)</td>
<td>@doubleValue</td>
<td>@doubleValue.ToString()</td>
<td>Error: Cannot convert double to boolean</td>
</tr>
<tr>
<td>@strValue</td>
<td>Error: Cannot convert string to integer</td>
<td>Error: Cannot convert string to double</td>
<td>@strValue</td>
<td>@Convert.ToBoolean(strValue)</td>
</tr>
<tr>
<td>@boolValue</td>
<td>Error: Cannot convert boolean to integer</td>
<td>Error: Cannot convert boolean to double</td>
<td>Error: Cannot convert boolean to string</td>
<td>@boolValue</td>
</tr>
</table>
</body>
</html>
In this example:
Convert.ToInt32, Convert.ToDouble, ToString, and Convert.ToBoolean are used to convert between data types.