如何正确设置... [英] How Do I Set Properly Calcul....
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问题描述
Label3.Text = Val(TextBox1.Text)/ Val(Label1.Text)/ Val(Label4.Text)
Textbox1.text说= 859386500049
label1.text说= 14215115526
label4.text说= 24 ' - >小时
应为= 2,5 - - (在几天内)
我得到= 2,518926012125 这是正确的但是
如何摆脱那些不重要的数字(对我来说) 18926012125
所以我得到答案= 2,5 到回答更清楚那就是我想要的东西
解决方案
格式化:
Dim result = Val(TextBox1.Text)/ Val(Label1.Text)/ Val(Label4.Text)
Label3.Text = result.ToString( 0.0)
它们不是不重要 。要显示较少的数字,请使用正确的格式。请参阅:
http ://msdn.microsoft.com/en-us/library/system.double.tostring%28v=vs.110%29.aspx [ ^ ],
< a href =http://msdn.microsoft.com/en-us/library/dwhawy9k(v=vs.110).aspx> http://msdn.microsoft.com/en-us/library/dwhawy9k( v = vs.110).aspx [ ^ ],
http://msdn.microsoft.com/en-us/library/0c899ak8(v = vs.110).aspx [ ^ ]。
另外,使用double.Parse
或double.TryParse
(更好)从t获取数字分机:
http: //msdn.microsoft.com/en-us/library/system.double.tryparse%28v=vs.110%29.aspx [ ^ ],
http://msdn.microsoft.com/en-us/ library / system.double.parse%28v = vs.110%29.aspx [ ^ ]。
-SA
Label3.Text = Val(TextBox1.Text) / Val(Label1.Text) / Val(Label4.Text)
Textbox1.text says = 859386500049
label1.text says = 14215115526
label4.text says = 24 ' -->"Hours"
should be = 2,5 --- (in days)
I got = 2,518926012125 it is correct but
how to get rid of those non important numbers (for me) 18926012125
so I get for answer = 2,5 to answer be more clear thats what i want
解决方案
Format it:
Dim result = Val(TextBox1.Text) / Val(Label1.Text) / Val(Label4.Text) Label3.Text = result.ToString("0.0")
They are not "not important". To show less digits, use proper format. Please see:
http://msdn.microsoft.com/en-us/library/system.double.tostring%28v=vs.110%29.aspx[^],
http://msdn.microsoft.com/en-us/library/dwhawy9k(v=vs.110).aspx[^],
http://msdn.microsoft.com/en-us/library/0c899ak8(v=vs.110).aspx[^].
Also, usedouble.Parse
ordouble.TryParse
(better) to get number from the text:
http://msdn.microsoft.com/en-us/library/system.double.tryparse%28v=vs.110%29.aspx[^],
http://msdn.microsoft.com/en-us/library/system.double.parse%28v=vs.110%29.aspx[^].
—SA
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