vb格式化字符串的方法有哪些

在VB中，格式化字符串的方法有以下几种：
1. 使用字符串插入符号（{0}、{1}、{2}等）和String.Format方法。例如：
```
Dim name As String = "John"
Dim age As Integer = 25
Dim formattedString As String = String.Format("My name is {0} and I am {1} years old.", name, age)
```
2. 使用字符串插入符号和字符串插入操作符（&）进行连接。例如：
```
Dim name As String = "John"
Dim age As Integer = 25
Dim formattedString As String = "My name is " & name & " and I am " & age.ToString() & " years old."
```
3. 使用字符串插入符号和字符串插入函数（$）进行连接。例如：
```
Dim name As String = "John"
Dim age As Integer = 25
Dim formattedString As String = $"My name is {name} and I am {age} years old."
```
4. 使用占位符（%）和字符串插入函数进行连接。例如：
```
Dim name As String = "John"
Dim age As Integer = 25
Dim formattedString As String = String.Format("My name is {0} and I am {1} years old.", name, age)
```
这些方法都可以用来将变量的值插入到字符串中，并以指定的格式进行格式化。