方法一:
static bool IsNumeric(string str)
}
方法二:
private bool IsNumeric(string s)
}
方法三:
static bool IsNumeric (string str)
}
方法四:(可扩展)
public static bool IsConvert(string Expression,Type DataType)
}
正则表达的写法是:
static bool IsNumeric(string str)
}
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