By default there is no way to validate / check file size before it is uploaded, but j Query Uploadify Plugin makes use of Flash program to determine the size of the File as soon as it is selected.Here Mudassar Ahmed Khan has explained how to validate Check Boxes inside Grid View and perform at least one checked validation using Java Script in ASP. Validation of Check Boxes inside Grid View is performed using ASP.
Here Mudassar Ahmed Khan has explained how to check (validate) File (Image) size before upload using Java Script and j Query.
HTML5 allows developers to access the file contents and details using Java Script and j Query and hence in browsers that support HTML5 one can easily determine the size of the File. Net Question Answer site, specially started to allow visitors of this site ask their doubts and queries. Just click the Ask Now button and ask your question now.
For browsers that don’t support HTML5 have to use j Query Flash plugins like Uploadify. Now you can ask questions directly to me on my new site ASPForums.
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This is the simplest way to validate a dd/MM/yyyy date format string.