PagesSection.RenderAllHiddenFieldsAtTopOfForm Property

Definition

Namespace:

System.Web.Configuration

Assembly:

System.Web.dll

Gets or sets a value that indicates whether all system-generated hidden fields are rendered at the top of the form.

public:
 property bool RenderAllHiddenFieldsAtTopOfForm { bool get(); void set(bool value); };

[System.Configuration.ConfigurationProperty("renderAllHiddenFieldsAtTopOfForm", DefaultValue=true)]
public bool RenderAllHiddenFieldsAtTopOfForm { get; set; }

[<System.Configuration.ConfigurationProperty("renderAllHiddenFieldsAtTopOfForm", DefaultValue=true)>]
member this.RenderAllHiddenFieldsAtTopOfForm : bool with get, set

Public Property RenderAllHiddenFieldsAtTopOfForm As Boolean

Property Value

Boolean

true if system-generated hidden fields are rendered at the top of the form; otherwise, false. The default is true.

Attributes

ConfigurationPropertyAttribute

Remarks

You can use the RenderAllHiddenFieldsAtTopOfForm property to specify that some system-generated hidden fields are rendered at the end of the form.

In versions of ASP.NET earlier than the .NET Framework 3.5 SP1, ASP.NET renders some hidden fields (for example, __VIEWSTATE) at the top of the form. Other hidden fields (for example, __EVENTVALIDATION) are rendered near the bottom of the form, just before the closing </div> tag. By default, in ASP.NET 3.5 SP1, all system-generated hidden fields are rendered at the top of the page. This makes sure that the information in these fields is sent to the server even if a postback is performed before the page has finished loading. If RenderAllHiddenFieldsAtTopOfForm is set to false, performing a postback before the page has finished loading can cause an "Invalid postback or callback argument" error.

Note

Although the property name indicates "all hidden fields," user-created hidden fields are not affected by settings for this property.