Answer / shravani

Validation summary control is used to display the summary
of all the error messages in the page either in the format
of bullet list or somethingelse mentioned in the properties
of that control.Whatever errors we get in a page,those are
all listed in that control so that user finds easy to read
and know what is wrong. And i think we can make the
visible property of the validation summary control to be
false so that it is not seen to the users.

Answer / pallavi

ASP.NET has provided an additional control that complements the validator controls. This is the validation summary control which is used like:
<asp:ValidationSummary id="valSummary" runat="server"
HeaderText="Errors:"
ShowSummary="true" DisplayMode="List" />
>

The validation summary control will collect all the error messages of all the non-valid controls and put them in a tidy list. The list can be either shown on the web page (as shown in the example above) or with a popup box (by specifying ShowMessageBox="True")

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