i have an asp.net application. it generate pdf as dynamicaly with database data. So everything is fine. Only problem is some times the pdf file is not open some times. I think that the delay problem. so how can i solve this problem. if it is happened then refesh then the pdf file is coming fine. My logic implimented as generate pdf file and save to folder then open with a aspx page with this file. Some time only the problem in open . So how to solve this. but this case i merging three pdf as single one. and open it