English 中文(简体)
采用定期表达方式实现零
原标题:Matching Zero Using Regular expression
  • 时间:2010-11-11 06:58:51
  •  标签:
  • c#
  • regex

如何使用<代码>Regex

String Str="11111111";
if(Str.Contains("0"))
         MessageBox.Show("Not matching");
else
         MessageBox.Show("Matching");

这一模式是否正确?

Mathc mh=rx.Match(Str);

if(mh.Success==false)
         MessageBox.Show("Not matching");
else
         MessageBox.Show("Matching");

But its not working. My string Str does not have 0 but its showing mh.Success=true

请帮助我

最佳回答

(*)号星号是指0或更多发生,你只想在任何地方找到单一发生点,这样简单地说,“0”就是这样做的:

Regex ex = new Regex("0");
问题回答

定期表述<代码>0*系指0或以上0s。 这是成功的原因。 正如Aviad P.所说,只有0才能做到。 或者,您可以使用“^[^0]*$等表述,作为与entire string相吻合的测试表述。 当然,没有理由在简单<条码>上加以使用。 Containsdoes the work.





相关问题
Anyone feel like passing it forward?

I m the only developer in my company, and am getting along well as an autodidact, but I know I m missing out on the education one gets from working with and having code reviewed by more senior devs. ...

NSArray s, Primitive types and Boxing Oh My!

I m pretty new to the Objective-C world and I have a long history with .net/C# so naturally I m inclined to use my C# wits. Now here s the question: I feel really inclined to create some type of ...

C# Marshal / Pinvoke CBitmap?

I cannot figure out how to marshal a C++ CBitmap to a C# Bitmap or Image class. My import looks like this: [DllImport(@"test.dll", CharSet = CharSet.Unicode)] public static extern IntPtr ...

How to Use Ghostscript DLL to convert PDF to PDF/A

How to user GhostScript DLL to convert PDF to PDF/A. I know I kind of have to call the exported function of gsdll32.dll whose name is gsapi_init_with_args, but how do i pass the right arguments? BTW, ...

Linqy no matchy

Maybe it s something I m doing wrong. I m just learning Linq because I m bored. And so far so good. I made a little program and it basically just outputs all matches (foreach) into a label control. ...

热门标签