當麻許的超技八

var sampleText = "{IMG:a.jpg}<br />sometext{sometext2}{IMG:b.jpg}";

var rgx = new Regex(@"{IMG:(?<FILENAME>.*?)}", RegexOptions.IgnoreCase);

var replacePattern = "<img src='$1' />";

var resultText = rgx.Replace(sampleText, replacePattern);

Response.Write(resultText);

{"Message":"使用 JSON JavaScriptSerializer 序列化或還原序列化期間發生錯誤。字串的長度超過在 maxJsonLength 屬性上設定的值。

參數名稱: input","StackTrace":"   於 System.Web.Script.Serialization.JavaScriptSerializer.Deserialize(JavaScriptSerializer serializer, String input, Type type, Int32 depthLimit)

 於 System.Web.Script.Serialization.JavaScriptSerializer.Deserialize[T](String input)\r\n   於 System.Web.Script.Services.RestHandler.GetRawParamsFromPostRequest(HttpContext context, JavaScriptSerializer serializer)

 於 System.Web.Script.Services.RestHandler.GetRawParams(WebServiceMethodData methodData, HttpContext context)

於 System.Web.Script.Services.RestHandler.ExecuteWebServiceCall(HttpContext context, WebServiceMethodData methodData)","ExceptionType":"System.ArgumentException"}

<configuration>

...

   <system.web.extensions>

    <scripting>

      <webServices >

        <jsonSerialization maxJsonLength="10240000"></jsonSerialization>

      </webServices>

    </scripting>

  </system.web.extensions>

...

</configuration>