vb.net Convert.ToType 转换为指定类型,每一类型都有一个实例代码和注释
时间: 2024-02-13 10:05:48 浏览: 22
1. 转换为整数类型 Int32:
```
Dim str As String = "123"
Dim i As Int32 = Convert.ToInt32(str)
' i 的值为 123
```
2. 转换为长整数类型 Int64:
```
Dim str As String = "1234567890"
Dim l As Int64 = Convert.ToInt64(str)
' l 的值为 1234567890
```
3. 转换为单精度浮点类型 Single:
```
Dim str As String = "3.14"
Dim f As Single = Convert.ToSingle(str)
' f 的值为 3.14
```
4. 转换为双精度浮点类型 Double:
```
Dim str As String = "3.14159265359"
Dim d As Double = Convert.ToDouble(str)
' d 的值为 3.14159265359
```
5. 转换为布尔类型 Boolean:
```
Dim str As String = "True"
Dim b As Boolean = Convert.ToBoolean(str)
' b 的值为 True
```
6. 转换为日期类型 DateTime:
```
Dim str As String = "2021-01-01"
Dim dt As DateTime = Convert.ToDateTime(str)
' dt 的值为 2021/1/1 0:00:00
```
以上示例代码仅供参考,具体的转换方式和结果可能因不同的输入值而有所不同。