如何在VB.NET中以HH：mm：ss：fff格式减去两个不同的时间？

问题描述

公共类Form1 
私有 Sub  Button1_Click（ByVal sender As System.Object，ByVal e As System.EventArgs）处理Button1.Click 
 TextBox1.Text =格式（现在，  HH：mm：ss：fff）'开始按钮
结束 Sub  
 
私人 Sub  Button2_Click（ByVal sender As System.Object，ByVal e As System.EventArgs）处理Button2.Click 
 TextBox2.Text =格式（现在，  HH：mm：ss：fff）'结束按钮
结束 Sub  
 
 Private  Sub  Button3_Click（ByVal sender As System.Object，ByVal e As System.EventArgs）Handles Button3.Click 
'减法按钮
 TextBox3 .Text = TextBox2.Text  -  TextBox1.Text 
结束 Sub  
 End Class 

以上代码出现以下错误。





从字符串12：00：03：554转换为Double无效。

解决方案

Public Class Form1
    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        TextBox1.Text = Format(Now, "HH:mm:ss:fff") ' start button
    End Sub

    Private Sub Button2_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button2.Click
        TextBox2.Text = Format(Now, "HH:mm:ss:fff") ' end button
    End Sub

    Private Sub Button3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button3.Click
        'subtract button
        TextBox3.Text = TextBox2.Text - TextBox1.Text
    End Sub
End Class

for the above code the following error is coming.


Conversion from string "12:00:03:554" to type 'Double' is not valid.

解决方案

这篇关于如何在VB.NET中以HH：mm：ss：fff格式减去两个不同的时间？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！