test.cs

using TXTextControl.DocumentServer.Fields;

namespace TXTextControl.DocumentServer.DataSources
{
    public static class Refactor
    {
        public static void RenameDataColumn(TextControl textControl,
                                            string oldColumnName,
                                            string newColumnName)
        {
            // iterate through all TextParts
            foreach (TextPartBase textPart in textControl.TextParts)
            {
                RenameMergeBlocks(textPart.SubTextParts, oldColumnName, newColumnName);
                RenameMergeFields(textPart.ApplicationFields, oldColumnName, newColumnName);
            }
        }

        private static void RenameMergeBlocks(SubTextPartCollection subTextParts,
                                              string oldColumnName,
                                              string newColumnName)
        {
            // iterate through all SubTextParts
            foreach (SubTextPart subTextPart in subTextParts)
            {
                // check if the SubTextPart is a merge block
                if (subTextPart.Name == "txmb_" + oldColumnName)
                {
                    // rename the SubTextPart
                    subTextPart.Name = "txmb_" + newColumnName;
                }
            }
        }

        private static void RenameMergeFields(ApplicationFieldCollection applicationFields,
                                              string oldColumnName,
                                              string newColumnName)
        {
            // iterate through all ApplicationFields
            foreach (ApplicationField applicationField in applicationFields)
            {
                // check if the ApplicationField is a merge field and contains the old column name
                if (applicationField.TypeName == "MERGEFIELD" &&
                    applicationField.Name.Contains(oldColumnName))
                {
                    // create a new MergeField object and replace the old column name with the new column name
                    MergeField mergeField = new MergeField(applicationField);
                    mergeField.Name = mergeField.Name.Replace(oldColumnName, newColumnName);
                }
            }
        }
    }
}