You want to reduce the size of your application pages to improve performance.
Review each page of your application and each of its controls to
determine if the
ViewState is required. Disable
ViewState where it is not explicitly needed.
In the code-behind class for the page, use the .NET language of your choice to do either of the following:
ViewState for the page by setting
ViewState for individual controls by
setting the control’s
EnableViewState property to
To illustrate these performance improvements, we took two examples
from Chapter 1 and optimized them by disabling
ViewState. In the first example, we took the
ASP.NET page created for Recipe 1.19, which
displays a grid containing books and price data, and disabled the
ViewState at the page level. Table 16-1 shows the page and
ViewState size before and after the optimization.
Table 16-1. ViewState performance improvement for Recipe 1.19 example
In the second example, we have used the ASP.NET page created in
Recipe 1.12, replaced the table used
for the page header with the header user control created in
Recipe 4.1, and then disabled the
ViewState for the header control as well as the
row controls within the
DataGrid that appears
within the page body. Example 16-1 shows ...