Getting data from ASP.NET Dundas control before Ajax.Submit in ASP.NET MVC
I am working on a project in ASP.NET MVC using C# 3.0.
I am using the Dundas Chart Control for OLAP. As the Dundas control does not directly support MVC it is used on a standard ASP.NET page with a codebehind file. This page is displayed in an iFrame of a normal View returned from a Controller Action.
I have a bu开发者_运维百科tton in the iFrame which submits a form via Ajax (using jQuery) to a method on the controller. I have also written an extension method for the OlapChart which returns the XML of the current report.
What I am looking for is a way of getting the XML produced by the extension method to the Controller Action which handles the Ajax submit.
I have only developed using ASP.NET MVC so I may be missing something obvious with Code Behind and ASP.NET controls.
Thanks.
an "uggly" way could be to store the xml in a session or cache that you could access from both controllrs and aspx pages.
I 'solved' this by creating an instance of the controller in the code-behind - in this project using a Spring.net IOC objects.xml file and a Spring.net XmlObjectFactory.
For the button I added an HtmlInputButton to the code-behind and set an onclick event handler. This was made asynchronous using the Dundas OlapManager.GetCallbackEventReference() method combined with a new command handler assigned to the OLAP Chart which provides the calls to invoked the controller methods.
In the Page_Load() function:
OlapClient1.OlapChart.Command += new CommandEventHandler(OlapChart_Command);
SaveDci.Attributes["onclick"] =
OlapClient1.OlapManager.GetCallbackEventReference(OlapClient1.OlapChart, "SaveDci", typeof(OlapChart));
SaveSnapshot.Attributes["onclick"] =
OlapClient1.OlapManager.GetCallbackEventReference(OlapClient1.OlapChart, "SaveSnapshot", typeof(OlapChart));
And the OLAP command handler:
private void OlapChart_Command(object sender, CommandEventArgs e)
{
if (e.CommandName.Equals("SaveDci"))
{
// Function to call appropriate controller method
SaveAsData(sender, e);
}
if (e.CommandName.Equals("SaveSnapshot"))
{
// Function to call appropriate controller method
SaveAsSnapshot(sender, e);
}
}
The iFrame was updated with a response using jQuery and the OlapMananger.ExecuteClientScript() method:
OlapClient1.OlapManager.ExecuteClientScript("$('#UpdatePanel').text('" + returnMessage + "');");
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