In aspx, the page button is written and the previous page code is returned.

<Script> history. go (-1); </script>

In any case, it does not return to the previous page.

After checking the information, the processing method in asp.net has changed. When you click the button, the page is refreshed. Therefore, we need to change-1 to-2 to return to the previous page.
Copy codeThe Code is as follows:
Protected void ButtonGoBack_Click (object sender, EventArgs e)
{
This. Page. ClientScript. RegisterClientScriptBlock (this. GetType (), "this", "<script> history. go (-2); </script> ");
}


Example running effect: