internal TypedColumnHandler(DesignTable designTable, TypedDataSourceCodeGenerator codeGenerator)
 {
     this.codeGenerator = codeGenerator;
     this.table         = designTable.DataTable;
     this.designTable   = designTable;
     this.columns       = designTable.DesignColumns;
 }
 internal TypedColumnHandler(DesignTable designTable, TypedDataSourceCodeGenerator codeGenerator)
 {
     this.codeGenerator = codeGenerator;
     this.table = designTable.DataTable;
     this.designTable = designTable;
     this.columns = designTable.DesignColumns;
 }