VB.NET 使用Microsoft.JScript创建JSON数据
时间: 2023-12-25 11:05:45 浏览: 127
在 VB.NET 中使用 Microsoft.JScript 创建 JSON 数据,可以使用 JavaScriptSerializer 类,该类位于 Microsoft.JScript.dll 中。具体步骤如下:
1. 引用 Microsoft.JScript 命名空间:
```vb
Imports Microsoft.JScript
```
2. 创建要创建的 JSON 数据对象,这里以一个 Person 类为例:
```vb
Public Class Person
Public Property Name As String
Public Property Age As Integer
End Class
```
3. 创建 Person 对象实例:
```vb
Dim person As New Person() With {
.Name = "张三",
.Age = 20
}
```
4. 调用 JavaScriptSerializer 类的 Serialize 方法将对象序列化为 JSON 字符串:
```vb
Dim serializer As New JavaScriptSerializer()
Dim json As String = serializer.Serialize(person)
```
此时,json 字符串的内容为:
```json
{"Name":"张三","Age":20}
```
注意,以上示例中的 Person 类仅供参考,具体的对象类型应根据实际情况进行修改。另外,如果需要自定义 JSON 序列化的格式,可以使用 JavaScriptSerializer 类的 RegisterConverters 方法进行扩展。例如,可以自定义转换器将 DateTime 类型的属性转换为指定格式的字符串类型,例如:
```vb
Public Class Person
Public Property Name As String
Public Property Age As Integer
Public Property Birthday As DateTime
End Class
Public Class DateTimeConverter
Inherits JavaScriptConverter
Public Overrides ReadOnly Property SupportedTypes As IEnumerable(Of Type)
Get
Return New Type() {GetType(DateTime)}
End Get
End Property
Public Overrides Function Deserialize(dictionary As IDictionary(Of String, Object), type As Type, serializer As JavaScriptSerializer) As Object
Throw New NotImplementedException()
End Function
Public Overrides Function Serialize(obj As Object, serializer As JavaScriptSerializer) As IDictionary(Of String, Object)
Dim dict As New Dictionary(Of String, Object)
dict.Add("birthday", CType(obj, DateTime).ToString("yyyy-MM-dd"))
Return dict
End Function
End Class
Dim serializer As New JavaScriptSerializer()
serializer.RegisterConverters(New JavaScriptConverter() {New DateTimeConverter()})
Dim json As String = serializer.Serialize(person)
```
这里使用 DateTimeConverter 类将 Birthday 属性序列化为 yyyy-MM-dd 格式的字符串类型。
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