ISPOSTBACK refers to whether the WebForm is in response to the client.
Simply, it is to judge whether it is Webform first visit.
ISPostBack refers to access to the second and afterwards
! ISPostback is the first visit
Results for True | False
This is generally used when cookie and session use.
DataGrid data binding, etc.
E.g:
IF (! ispostback)
{
IF (session == NULL)
{
Response.Redirect ("Error.htm");
}
}
