Question

vb.net中如何将字符串型转换成浮点型

Answer 1

Dim s As String = "你的字符串"
Dim si As Single = CType(Val(s), Single)
MsgBox(si)
程序里测试通过 你试试看。

Answer 2

Dim a As Single = Convert.ToSingle(TextBox1.Text)

Answer 3

存在自动转换：
Dim a As Single, b As String
b = "345.567"
a = b
MsgBox(a)