i have made report in RDLC format everything working. customer asked me to add new field in report. i just simply edited my dataset and insert required filed refresh schema of report and when i open rdlc report i cant see newly insert field? how to do that?. although i done by opening rdlc report in notepad and mannuly insert value there. but i wonder how can i do that with gui. and i cant see the dataset when i open RDLC Report in design mode. i have made a dataset in Report viewer form and there i added new field in dataset. but i cant see in RDLC report in design time.