tryParse不转换值
tryParse不转换值
提问于 2013-06-24 09:15:07
我有严格的选择权。当我打开它时，下面的代码不起作用。我能够将问题隔离到下面这一行
Decimal.TryParse(lblAnnualMid.Text, decAnnualMid)由于此行没有将值从文本更改为小数，因此我的其余代码不起作用，并且我的标签显示$0。
我怎么才能解决这个问题。我仍然在VB.Net中摸索，所以如果这看起来很明显，请原谅我。
下面是我的代码的其余部分：
Option Strict On
Option Explicit On
Public Class frmCustomRanges
'Variables for the MidPoint TextBoxes
Dim decAnnualMid As Decimal
Dim decHourlyMid As Decimal
Private Sub txtRangeSpread_TextChanged(sender As Object, e As EventArgs) Handles txtRangeSpread.TextChanged
'This event runs when the user enters a number in the
'txtRangeSpread text box. The amount is converted to a decimal
'it then calculates the min and max of the range for annual
'and hourly ranges. The ranges change as the user changes the range
'spread.
'Variables for the event
Dim decRangeSpreadResults As Decimal
'Verify entry is numeric
If IsNumeric(txtRangeSpread.Text) Then
'Convert entry to decimal
Dim decRangeSpread As Decimal = Convert.ToDecimal(txtRangeSpread.Text)
'convert the Mid point value to decimal
Decimal.TryParse(lblAnnualMid.Text, decAnnualMid)
'convert range spread value to percentage
decRangeSpreadResults = decRangeSpread / 100
'Display results in dollar string Annual salary
lblAnnualMin.Text = Convert.ToDecimal(decAnnualMid - (decRangeSpreadResults * decAnnualMid)).ToString("C")
lblAnnualMax.Text = Convert.ToDecimal(decAnnualMid + (decRangeSpreadResults * decAnnualMid)).ToString("C")
''Display results in dollar string in Hourly rate
lblHourlyMin.Text = Convert.ToDecimal(decAnnualMid + (decRangeSpreadResults * decAnnualMid) / 52 / 40).ToString("C")
lblHourlyMax.Text = Convert.ToDecimal(decAnnualMid + (decRangeSpreadResults * decAnnualMid) / 52 / 40).ToString("C")
Else
MsgBox("You have entered a non-numeric value. Please check value and enter again", vbCritical, "Input Error")
With txtRangeSpread
.Text = ""
.Focus()
End With
End If
End Sub回答 2
Stack Overflow用户
回答已采纳
发布于 2013-06-24 12:52:22
实际上你想要的是这个
decimal.TryParse("$35,000",NumberStyles.Currency ,null , out test)例如：
using System;
using System.Globalization;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
decimal test;
Console.WriteLine(decimal.TryParse("$35,000",NumberStyles.Currency ,null , out test));
Console.WriteLine(test);
Console.Read();
}
}
}more information about NumberStyles
Stack Overflow用户
发布于 2013-06-24 10:39:58
我将我的代码行改为：
Decimal.TryParse(lblAnnualMid.Text.Replace("$", ""), decAnnualMid)这工作得很完美。
谢谢你们所有人。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/17266849
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