asp.net截取字符串

如下面的字符串:
abc-bdef-axdg,我只想取到第一个"-"的位置，该怎么写？？？？

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C# code:
string str = "abc-bdef-axdg";
Console.WriteLine(str.Substring(0, str.IndexOf("-")));


结果-->>>abc

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C# code:
String.IndexOf

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static void Main(string[] args)
  {

  string str = "abc-bdef-axdg";
  Console.WriteLine(str.IndexOf('-'));
  Console.ReadLine();

  }

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C# code:
"abc-bdef-axdg".IndexOf("-")

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同意樓上的說法！

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SubString和String.IndexOf

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引用

C# codestring str="abc-bdef-axdg";
Console.WriteLine(str.Substring(0, str.IndexOf("-")));
结果-->>>abc

ding

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String.IndexOf

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string.Indexof

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回复这么快，只能支持了