I have a WebForms page that is used to upload / import data from an Excel file. Everything works fine until I test a certain size file, and then I can't even get to my Page_Init. In my case, a file with 25,023 rows (4,187,648 bytes) will process fine, but a file with 25,024 rows (4,188,160 bytes) fails.
Note that the flow goes like this: Page loads with an asp:FileUpload control and a button that causes a postback and would read the file. I have a breakpoint set on the first line of my Page_init. I try the first file, and everything works fine. I hit the breakpoint twice (once on initial load and once on Postback) and the file is read and processed just fine. With the bigger file, I hit the breakpoint on initial load of the page, but during the postback process, the page does not even get to the Page_Init routine before it fails (displays the generic "Internet Explorer cannot di ...
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