You can use lambdas to capture values (for example in a loop) and pass them on to your event handlers.ĭifferent events pass different types of event args so check out the official docs for details. In Summaryīlazor enables you to handle HTML events such as onClick events via event handlers. This avoids the shared i value problem, and clicking the buttons works as you would expect. Your onclick event handler can optionally accept a MouseEventArgs parameter which Blazor will automatically include when it invokes the handler. "/sayHello"īlazor will invoke GreetMe when the button is clicked, and the user will see a friendly (if somewhat unimaginative) greeting. On the other hand, mousedown and mouseup handlers may need event. What you need to do is use addMouseListener method on one of your GUI components, and to register your. this is why it is executed when you start your program. ![]() ![]() We usually don’t use it for click and contextmenu events, because the former happens only on left-click, and the latter only on right-click. What you are doing in your code is writing a MouseListener, but instead of adding it to the GUI components (so it will be activated when the mouse is clicked), you call it yourself. You can wire up a method to an HTML element event and Blazor will invoke that method as an event handler for said event. Click-related events always have the button property, which allows to get the exact mouse button. This is straightforward to do using Blazor’s event handling syntax. For this to occur, the various events cannot be disabled in the controls class. A click consists of a pointer down event followed by a pointer up event on the same VisualElement. Let’s say you want to perform an action when a button is clicked in Blazor. A ClickEvent occurs when the user clicks the left mouse button (or the first button on a pointing device) over a VisualElement. It's straightforward to wire up event handlers to HTML events like onClick in your Blazor components, but how can you pass additional information and different types of arguments?
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