HtmlSelect::LoadPostData Method (String^, NameValueCollection^)
Processes the postback data for the HtmlSelect control.
Assembly: System.Web (in System.Web.dll)
protected: virtual bool LoadPostData( String^ postDataKey, NameValueCollection^ postCollection )
Parameters
- postDataKey
-
Type:
System::String^
The key identifier for the control.
- postCollection
-
Type:
System.Collections.Specialized::NameValueCollection^
The collection of all incoming name values.
Return Value
Type: System::Booleantrue if the HtmlSelect control's state has changed as a result of a postback; otherwise, false.
| Exception | Condition |
|---|---|
| ArgumentOutOfRangeException | The SelectedIndex property was set to a value greater than the number of items in the HtmlSelect control or less than -1. |
The LoadPostData method checks whether the postback data of the HtmlSelect control is different from its previous value, and if so, returns true. If the HtmlSelect control's Multiple property is false, indicating a single-selection HtmlSelect control, then the LoadPostData method checks the SelectedIndex property. If the HtmlSelect control's Multiple property is true, indicating a multiple-selection HtmlSelect control, then the LoadPostData method checks the SelectedIndices property.
The LoadPostData method is used primarily by control developers extending the functionality of the HtmlSelect control.
Available since 2.0