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VB.NET Single.TryParse方法代码示例

本文整理汇总了VB.NET中System.Single.TryParse方法的典型用法代码示例。如果您正苦于以下问题:VB.NET Single.TryParse方法的具体用法?VB.NET Single.TryParse怎么用?VB.NET Single.TryParse使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在System.Single的用法示例。

在下文中一共展示了Single.TryParse方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于我们的系统推荐出更棒的VB.NET代码示例。

示例1:

Dim value As String
Dim number As Single

' Parse a floating-point value with a thousands separator.
value = "1,643.57"
If Single.TryParse(value, number) Then
   Console.WriteLine(number)
Else
   Console.WriteLine("Unable to parse '{0}'.", value)      
End If   

' Parse a floating-point value with a currency symbol and a 
' thousands separator.
value = "$1,643.57"
If Single.TryParse(value, number) Then
   Console.WriteLine(number)  
Else
   Console.WriteLine("Unable to parse '{0}'.", value)   
End If

' Parse value in exponential notation.
value = "-1.643e6"
If Single.TryParse(value, number)
   Console.WriteLine(number)
Else
   Console.WriteLine("Unable to parse '{0}'.", value)   
End If

' Parse a negative integer number.
value = "-168934617882109132"
If Single.TryParse(value, number)
   Console.WriteLine(number)
Else
   Console.WriteLine("Unable to parse '{0}'.", value)   
End If
开发者ID:VB.NET开发者,项目名称:System,代码行数:35,代码来源:Single.TryParse

输出:

1643.57
Unable to parse '$1,643.57'.
-1643000
-1.68934617882109E+17


示例2:

Dim value As String
Dim style As System.Globalization.NumberStyles
Dim culture As System.Globalization.CultureInfo
Dim number As Single

' Parse currency value using en-GB culture.
value = "£1,097.63"
style = System.Globalization.NumberStyles.Number Or _
        System.Globalization.NumberStyles.AllowCurrencySymbol
culture = System.Globalization.CultureInfo.CreateSpecificCulture("en-GB")
If Single.TryParse(value, style, culture, number) Then
   Console.WriteLine("Converted '{0}' to {1}.", value, number)
Else
   Console.WriteLine("Unable to convert '{0}'.", value)
End If    

value = "1345,978"
style = System.Globalization.NumberStyles.AllowDecimalPoint
culture = System.Globalization.CultureInfo.CreateSpecificCulture("fr-FR")
If Single.TryParse(value, style, culture, number) Then
   Console.WriteLine("Converted '{0}' to {1}.", value, number)
Else
   Console.WriteLine("Unable to convert '{0}'.", value)
End If    

value = "1.345,978"
style = System.Globalization.NumberStyles.AllowDecimalPoint Or _
        System.Globalization.NumberStyles.AllowThousands
culture = System.Globalization.CultureInfo.CreateSpecificCulture("es-ES")
If Single.TryParse(value, style, culture, number) Then
   Console.WriteLine("Converted '{0}' to {1}.", value, number)
Else
   Console.WriteLine("Unable to convert '{0}'.", value)
End If    

value = "1 345,978"
If Single.TryParse(value, style, culture, number) Then
   Console.WriteLine("Converted '{0}' to {1}.", value, number)
Else
   Console.WriteLine("Unable to convert '{0}'.", value)
End If
开发者ID:VB.NET开发者,项目名称:System,代码行数:41,代码来源:Single.TryParse

输出:

Converted '£1,097.63' to 1097.63.
Converted '1345,978' to 1345.978.
Converted '1.345,978' to 1345.978.
Unable to convert '1 345,978'.



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