在2005年VS 2005年C#中,如果扼杀是空洞,那是最好的检查方法?
What is the use of default keyword in C#? Is it introduced in C# 3.0 ?
在2005年VS 2005年C#中,如果扼杀是空洞,那是最好的检查方法?
审判:
if (string.IsNullOrEmpty(YourStringVariable))
{
//TO Do
}
如上所述,你可以使用“努力”。 IsNullOrEmpty, 但如果你也想只检查面积(有些用户在需要一个领域时会有一个空间),这不会奏效。 在这种情况下,你可以使用:
if(String.IsNullOrEmpty(str) || str.Trim().Length == 0) {
// String was empty or whitespaced
}
C# 4 has the String.IsNullOr White Space(), 处理你方言由白天空构成的情况。
The string.IsNullOrEmpty (
methods on the string category se.
你可以使用
string.Length == 0
但除非扼杀行为无效,否则这种情况将继续存在。
c)
bool isStringEmpty = string.IsNullOrEmpty("yourString");
What is the use of default keyword in C#? Is it introduced in C# 3.0 ?
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