C# how to insert this javascript into SQL onFocus="alert('Error');"

HI am writing a C# app

I want to add some javascript into my SQL server.
it errors on the single quotes. If I type 2 single quotes in my texBox;
it works fine. I am trying to handle this in my code save doing it in the textbox.
I have paramatised the string in the data class I have made which I thought would sort it out it that didn't.
I guessing I need to use .Replace but have not managed to get the syntax right.

Any help would be appreciated.


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Is this what you mean?
onFocus = textbox.Text.Replace("'", "''");
The first argument is single '
The second argument is double '

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ipgbarryAuthor Commented:
Great thanks worked first time.
string js = textbox.Text.Replace("'", "''");
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