请添加另一个按钮进行保存.
单击保存按钮的单击事件时，将保存文件..........

please add one another button for save.
at click event of save button save the file..........

要维护文件名，您需要使用HiddenField.这可以帮助你

祝你好运

Hi,

to maintain name of file u need to use HiddenField. this can help u

Best Luck