String replace with another character C#

Question

my messages normally comes like this in SMSgateway(gateway forwarded the message to our application),

sett pØll 1 2 3 4 5 6 7 8 121011 ( this message is correct )

But some cases this message comes like,

sett p&oslas;ll 1 2 3 4 5 6 7 8 121011 (this message incorrect,Ø comes with &oslas;)

this message comes as a string,when message comes &oslas; i need to replace it to Ø. sometimes it comes with another name, like gordØn(gord&oslas;n) It always stat with & sign & endsup with ; sign.

Here i tries to do it,but my knowledge is not enough to complete this..

 protected void Page_Load(object sender, EventArgs e)
{

    try
    {
        string mobileNo = Request.QueryString["msisdn"];
        int  dest = int.Parse(Request.QueryString["shortcode"].ToString());
        string messageIn = Request.QueryString["msg"];
        string operatorNew = Request.QueryString["operator"];

        string []reparr = messageIn.Split(' ');//split it & then check contains
        reparr[1].Contains = '&';
        reparr[1].Contains = ';';
        // In here i need to check that character & replace it to originalone.


        Label1.Text = "ok";

        WriteToFile(mobileNo, dest, messageIn, operatorNew,true,"","");

I mean, you can conceivably do messageIn.Replace("&oslas;", "ø");, but I think that using HtmlDecode is more flexible. — nneonneo
– nneonneo, Commented Oct 14, 2012 at 19:08
when i add HtmlDecode then after the &, all the character missing. — Nimantha Prasad
– Nimantha Prasad, Commented Oct 15, 2012 at 4:03

nneonneo · Accepted Answer · 2012-10-14 18:52:50Z

2

Those look like HTML entities. You can try to decode them using HttpUtility.HtmlDecode:

string messageIn = HttpUtility.HtmlDecode(Request.QueryString["msg"]);

answered Oct 14, 2012 at 18:52

nneonneo

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5 Comments

TechGuy Over a year ago

i think you can't use this function,OP needs String replace

TechGuy Over a year ago

he ask about when some character inside the &xxxx; then how to replace with original Ø; character

nneonneo Over a year ago

Yes, but &xxxx; are commonly known as HTML entities. Since he gets the data from a web form, it makes sense that the input might contain HTML entities. Using a library function is much easier than trying to deal with the hundreds of defined HTML entities.

Nimantha Prasad Over a year ago

@nneonneo ya then how to replace it with original characters ?

nneonneo Over a year ago

@NimanthaPrasad: That's what HtmlDecode does: it takes stuff like %amp; and ø and replaces it with the proper characters & and ø.

urlreader · Accepted Answer · 2012-10-14 18:54:51Z

0

you can use HttpServerUtility.UrlDecode to decode the url see http://msdn.microsoft.com/en-us/library/system.web.httpserverutility.urldecode.aspx

answered Oct 14, 2012 at 18:54

urlreader

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4 Comments

nneonneo Over a year ago

That seems to be the wrong function; it decodes URLs (%20), not HTML entities (&).

urlreader Over a year ago

querystring is supposed to be from url.

TechGuy Over a year ago

he ask about when some character inside the &xxxx; then how to replace with original Ø character

Nimantha Prasad Over a year ago

@ChathuraRanasinghe Ranasinghe ya.exactly that i need.In here there's no any problem with query string

jags · Accepted Answer · 2012-10-14 19:04:12Z

0

I am not aware about web namespace utilities but you may use below code (if position of & and ; is always going to be in beginning of message and these characters will not appear inside message text):

String s = @"sett p&oslas;ll 1 2 3 4 5 6 7 8 121011";
Int32 startIndex = s.IndexOf("&");
String s1 = s.Replace(s.Substring(startIndex, s.IndexOf(";") - startIndex + 1), "Ø");

answered Oct 14, 2012 at 19:04

jags

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2 Comments

nneonneo Over a year ago

So, what happens if there are two Ø in the text?

jags Over a year ago

OP didn't explain anything related to this. OP is expecting Ø character to be missing when invalid value is coming and if Ø is coming then value is valid. Of course the code will need to handle all the scenarios.

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