vb.net 如果简写
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/15394203/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
vb.net if shorthand
提问by SkyeBoniwell
is there a way to use shorthand to do something like this?
有没有办法使用速记来做这样的事情？
If Not txtBookTitle.Text = String.Empty Then
objBook.DisplayName = txtBookTitle.Text
End If
回答by Mike Corcoran
objBook.DisplayName = If(Not (txtBookTitle.Text = String.Empty), txtBookTitle.Text, objBook.DisplayName)
回答by JayGee
There are two version of the if statement shorthand. Either If(expression, true part, false part) or If(expression, false part)
if 语句速记有两个版本。If(表达式，真部分，假部分)或If(表达式，假部分)
objBook.DisplayName = If(String.IsNullOrEmpty(txtBookTitle.Text), txtBookTitle.Text)
回答by Romil Kumar Jain
Following code is similar to your three line of code:
以下代码类似于您的三行代码：
objBook.DisplayName = IIF(String.IsNullorEmpty(txtBookTitle.Text),objBook.DisplayName, txtBookTitle.Text)
回答by Neolisk
This is the shortest version (81 character):
这是最短的版本（81 个字符）：
If txtBookTitle.Text <> String.Empty Then objBook.DisplayName = txtBookTitle.Text
And I would prefer this for debug-ability. Also easily convertible to C#.
我更喜欢这样的调试能力。也很容易转换为 C#。
