Question

I am trying to create a simple JavaScript file to inject from code behind and want to append variables names to message.

 string javascript = string.Format
                            (
                                @"var msg = '{0} ';
                                 if(confirm(msg))
                                {                                          
                                    hdnfield.value='Yes';
                                } else {
                                    hdnfield.value='No';
                                }
                                    submit();", variableName);

but getting an FormatException. What is the right way to do this?

Thanks as always.

Answer 1

Your braces in the if/else statement are not escaped, that is causing problems with the call to string.Format which uses braces to indicate the placeholders.

string javascript = string.Format
    (
        @"var msg = '{0} ';
         if(confirm(msg))
        {{                                          
            hdnfield.value='Yes';
        }} else {{
            hdnfield.value='No';
        }}
            submit();", variableName);