🚀 go-pugleaf

Hi,
    I am having trouble try to sort my DBGrid when I click on the column
title.  I am using access for my database and I have been using the code
below.

TADOTable *Tb ;

    if( dynamic_cast<TADOTable*>(DBGrid1->DataSource->DataSet) != NULL) {
        Tb =dynamic_cast<TADOTable*>(DBGrid1->DataSource->DataSet) ;
        try{
            Tb->IndexFieldNames=Column->FieldName;     // <- THIS IS WHERE
PROGRAM GIVES ERROR
        }
        catch(...){
            Tb->IndexFieldNames =  "" ;
        }

    }
I have used this code before and it had worked perfectly.  Now on this new
program it is giving the following error:

Arguments afe of the wrong type, are out of acceptable range, or are in
conflict with one another

I have gone through all of the help sections about the index field name
property and it said that if the cursor location is set incorrectlly that
would cause a problem and I have checked it but without success.  Could
someone please provide some assistance?

Thanks,
James