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Extension method must be defined in a non-generic static class

goodluck11
goodluck11 asked
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Last Modified: 2012-03-13
how can we fix this error ?

namespace truliaxml
{
     

public partial class Default : System.Web.UI.Page
    {

   

        protected void Page_Load(object sender, EventArgs e)
        {



.....code...

call SplitWithQualifier(...)
}

  public static string[] SplitWithQualifier(this string text,
                                                char delimiter,
                                                char qualifier,
                                                bool stripQualifierFromResult)
        {
            string pattern = string.Format(
                @"{0}(?=(?:[^{1}]*{1}[^{1}]*{1})*(?![^{1}]*{1}))",
                Regex.Escape(delimiter.ToString()),
                Regex.Escape(qualifier.ToString())
            );

            string[] split = Regex.Split(text, pattern);

            if (stripQualifierFromResult)
                return split.Select(s => s.Trim().Trim(qualifier)).ToArray();
            else
                return split;
        }

}


}
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CERTIFIED EXPERT
Most Valuable Expert 2011
Top Expert 2015
Commented:
Just as the error implies:  put your extension into a static class. For example:

public static class MyExtensions
{
public static string[] SplitWithQualifier(this string text,
                                                char delimiter,
                                                char qualifier,
                                                bool stripQualifierFromResult)
        {
            string pattern = string.Format(
                @"{0}(?=(?:[^{1}]*{1}[^{1}]*{1})*(?![^{1}]*{1}))",
                Regex.Escape(delimiter.ToString()),
                Regex.Escape(qualifier.ToString())
            );

            string[] split = Regex.Split(text, pattern);

            if (stripQualifierFromResult)
                return split.Select(s => s.Trim().Trim(qualifier)).ToArray();
            else
                return split;
        }
}

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As long as you have the namespace containing this new class imported (i.e. brought in via a using statement), then you will be able to use the extension method.