最简单的方法将字符串转换为十进制数是什么?
输入:
a = 40000.00-
输出结果将为
40,000.00-
我尝试使用这段代码:
Dim a as string
a = "4000.00-"
a = Format$(a, "#,###.##")
console.writeline (a)
使用 Decimal.Parse
将其转换为十进制数,然后使用 .ToString("格式")
将其转换回字符串。
Dim aAsDecimal as Decimal = Decimal.Parse(a).ToString("format here")
最后的手段(不推荐):
string s = (aAsDecimal <0) ? Math.Abs(aAsDecimal).ToString("##,###0.00") + "-" : aAsDecimal .ToString("##,###0.00");
您将需要翻译成Visual Basic。
Dim a as string
a = "4000.00-"
a = Decimal.Parse(a).ToString("##,###.00")
console.writeline (a)
' 结果为 4,000.00
- user709787针对VB.NET:
CDec(Val(string_value))
CDec(Val(a))
40000D
,如果a的值为"400.02",那么结果将会是400.02D
。Dim a as string
Dim b as Decimal
If Decimal.TryParse(a, b) Then
a = b.ToString("##,###.00")
Else
a = "can not parse"
End If
double a = 40000.00;
a = double.Parse(a.ToString("##,###.00"));
MessageBox.Show(a.ToString("##,###.00"));
Sub Main()
Dim convert As Func(Of String, Decimal) = _
Function(x As String) Decimal.Parse(x) ' This is a lambda expression.
Dim a = convert("-16325.62")
Dim spec As String = "N"
Console.WriteLine("{1}", spec, a.ToString(spec))
'Console.ReadLine() ' Uncomment to see value in Console output.
End Sub
Dim D@ = CDec(TextBox1.Text) '//convert string to decimal with short
这段代码可以运行,但是比较冗长:
Dim a as string
Dim b as decimal
a = "4000.00-"
b = a
If b >= 0 then
console.writeline (b.ToString("##,###.00"))
Else
b = Math.Abs(b)
console.writeline (b.ToString("##,###.00") & "-")
End if