Unterminated string constant error in asp.net

Question

enter image description here

Got this error while call the function

 static public void DisplayAJAXMessage(Control page, string msg)
{
    string myScript = String.Format("alert('{0}');", msg);

    ScriptManager.RegisterStartupScript(page, page.GetType(), "MyScript", myScript, true);
}

Calling this function:

    string sampledata = "Name                  :zzzzzzzzzzzzzzzz<br>Phone         :00000000000000<br>Country               :India";
        string sample = sampledata.Replace("<br>", "\n");


    MsgBox.DisplayAJAXMessage(this, sample);

I need to display Name,Phone and Country in next line.

Simon Whitehead · Accepted Answer · 2012-08-13 07:06:08Z

9

Unterminated string constant means you've forgotten to close your string. You can't have an alert that runs over multiple lines. When the script is outputting to the browser, it's actually including the new lines.. not the "\n" like the javascript expects. That means, your alert call is going over multiple lines.. like this:

alert('Name                  :zzzzzzzzzzzzzzzz
       Phone         :00000000000000
       Country               :India');

..which won't work, and will produce the error you're seeing. Try using double backslash to escape the backslash:

string sample = sampledata.Replace("<br>", "\\n");

answered Aug 13, 2012 at 7:06

Simon Whitehead

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3 Comments

Prince Antony G Over a year ago

How to set the font size as 14px and font as courier new font for that alert box.

Simon Whitehead Over a year ago

You can't... Your best option is a custom alert dialog .. perhaps something with jQuery UI. That's a separate subject though..

Prince Antony G Over a year ago

how to create custom alert dialog box?

Marc Gravell · Accepted Answer · 2012-08-13 07:05:55Z

3

"\n" is a newline for C#, i.e. your js contains:

something('...blah foo
bar ...');

what you actually want is a newline in js:

something('...blah foo\nbar ...');

which you can do with:

string sample = sampledata.Replace("<br>", "\\n");

or:

string sample = sampledata.Replace("<br>", @"\n");

answered Aug 13, 2012 at 7:05

Marc Gravell

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Community · Accepted Answer · 2017-05-23 10:29:43Z

1

You need to escape/encode your string being consumed by JavaScript:

Escape Quote in C# for javascript consumption

edited May 23, 2017 at 10:29

CommunityBot

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answered Aug 13, 2012 at 7:05

rick schott

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Roger Medeiros · Accepted Answer · 2012-08-13 17:10:12Z

0

Your Unterminated is not in C# is in Javascript generated code.

answered Aug 13, 2012 at 17:10

Roger Medeiros

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