Page.GetPostBackEventReference Method (Control, String)
.NET Framework 3.0
NOTE: This method is now obsolete.
Returns a string that can be used in a client event to cause postback to the server. The reference string is defined by the specified control that handles the postback and a string argument of additional event information. Namespace: System.Web.UIAssembly: System.Web (in system.web.dll)
/** @attribute ObsoleteAttribute("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202") */
public String GetPostBackEventReference (
Control control,
String argument
)
ObsoleteAttribute("The recommended alternative is ClientScript.GetPostBackEventReference. http://go.microsoft.com/fwlink/?linkid=14202") public function GetPostBackEventReference ( control : Control, argument : String ) : String
Not applicable.
Parameters
- control
The server control to process the postback.
- argument
The parameter passed to the server control.
Return Value
A string that, when treated as script on the client, initiates the postback.This method has been deprecated. Use the GetPostBackEventReference method in the ClientScriptManager class instead.
public class MyControl extends Control implements IPostBackEventHandler
{
// Create an integer property that is displayed when
// the page that contains this control is requested
// and save it to the control's ViewState property.
/** @property
*/
public int get_Number()
{
if (get_ViewState().get_Item("Number") != null) {
return System.Convert.ToInt32(get_ViewState().get_Item("Number"));
}
return 50;
} //get_Number
/** @property
*/
public void set_Number(int value)
{
get_ViewState().set_Item("Number", (Int32)value);
} //set_Number
// Implement the RaisePostBackEvent method from the
// IPostBackEventHandler interface. If 'inc' is passed
// to this method, it increases the Number property by one.
// If 'dec' is passed to this method, it decreases the
// Number property by one.
public void RaisePostBackEvent(String eventArgument)
{
if (eventArgument.Equals("inc")) {
set_Number(get_Number() + 1);
}
if (eventArgument.Equals("dec")) {
set_Number(get_Number() - 1);
}
} //RaisePostBackEvent
protected void Render(HtmlTextWriter writer)
{
// Converts the Number property to a string and
// writes it to the containing page.
writer.Write("The Number is " + ((Int32)get_Number()).ToString()
+ " (");
// Uses the GetPostBackEventReference method to pass
// 'inc' to the RaisePostBackEvent method when the link
// this code creates is clicked.
writer.Write("<a href=\"javascript:" + get_Page().
GetPostBackEventReference(this, "inc")
+ "\">Increase Number</a>");
writer.Write(" or ");
// Uses the GetPostBackEventReference method to pass
// 'dec' to the RaisePostBackEvent method when the link
// this code creates is clicked.
writer.Write("<a href=\"javascript:" + get_Page().
GetPostBackEventReference(this, "dec")
+ "\">Decrease Number</a>");
} //Render
} //MyControl
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