技术问答C#涓€庝箞鐢ㄦ墿灞曟柟娉曞寮哄瓧绗︿覆澶勭悊鍔熻兘 - 扬州沐宇科技

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public static class StringExtensions
{
    public static string CustomMethod(this string str)
    {
        // 鍦ㄨ繖閲岀紪鍐欎綘鐨勮嚜瀹氫箟瀛楃涓插鐞嗛€昏緫
        return "Custom method called: " + str;
    }
}

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using YourNamespace;

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string myString = "Hello";
string result = myString.CustomMethod();
Console.WriteLine(result); // 杈撳嚭锛欳ustom method called: Hello

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