CODEWITHSUNDEEP
winformsdevexpressribbon
user3930470
user3930470

Reputation: 33

BarButtonItem & RibbonBarManager Click Event in DevExpress

I have a problem with the DevExpress namely: Button in RibonControl. I wrote the event "click" for the way the button in RibonControl as follows:

 private void barButtonClick_ItemClick(object sender, ItemClickEventArgs e)
 {
    BarButtonItem item = (BarButtonItem)(sender);
    //..... if else ...
 }

and I get an error message while running:

Additional information: Unable to cast object of type 'DevExpress.XtraBars.Ribbon.RibbonBarManager' to type 'DevExpress.XtraBars.BarButtonItem'.

I think, this error due to the fact that "click" of the button in DevExpress similar in WPF (routed events), correct? and how to solve?

Upvotes: 2

Views: 3536

Answers (1)

DmitryG
DmitryG

Reputation: 17850

Here is how the correct code-snippet looks for your task:

void barButtonItem_ItemClick(object sender, DevExpress.XtraBars.ItemClickEventArgs e) {
    BarButtonItem bItem = e.Item as BarButtonItem;
    // ... do something
}

Documentation: the ItemClickEventArgs.Item property.

The fact, that sender parameter within this event handler is BarManager rather than the BarButtonItem, can be explained via DevExpress XtraBars Suite architecture. The main idea is that the BarItem is a non-visual element that can't be "clicked". The BarItemLink element is a link to this item that represent item on screen. The BarManager instance manage all the interactions with links and route all the events to the corresponding item's and BarManager's event handlers. That's why the BarManager/RibbonBarManager instance appears as sender parameter within the event handler.

See Items and Links for more details.

Upvotes: 2

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