The $find() function is looking for a named element on the page and expects the server-side ID as a parameter. Therefore we add code to this function to show the ModalPopup control, but only if launchModal() has been called before: function pageLoad() The pageLoad() JavaScript function is a special function that gets executed once ASP.NET AJAX has been fully loaded. Therefore, the launchModal() function just sets a variable that the ModalPopup control must be shown later on: At that moment, however, the ASP.NET AJAX framework has not been fully loaded yet. ![]() The launchModal() function is executed once the complete HTML page has been loaded. The job of launchModal() is to display the ModalPopup. Protected void ServerButton_Click(object sender, EventArgs e)ĬlientScript.RegisterStartupScript(this.GetType(), "key", "launchModal() ", true) In this method, a JavaScript function called launchModal() is executed to be exact, the JavaScript function will be executed once the page has been loaded: In order to achieve the same effect using server-side code, a new button is required: Īs you can see, a click on the button generates a postback and executes the ServerButton_Click() method on the server. When you click on the button, the modal popup appears. Īs with all web pages based on ASP.NET AJAX the Script Manager is required to load the necessary JavaScript libraries for the different target browsers: Set properties for the button which loads the control, the button which makes it disappear, and the ID of the actual popup. Next add the ModalPopup control from the ASP.NET AJAX Toolkit to the page. ĪSP.NET AJAX is a free framework for quickly creating a new generation of moreĮfficient, more interactive and highly-personalized Web experiences that work The ModalPopup control offers the functionality to make such a button close the popup otherwise there is no easy way to let it vanish. Define it as an control and make sure that it includes a Button control. Then, you need the markup for the popup you want to create. Add such a button within the element on a new page: Stepsįirst of all, an ASP.NET Button web control is required to demonstrate how the ModalPopup control works. However some scenarios require that the opening of the modal popup is triggered on the server-side. The ModalPopup control in the AJAX Control Toolkit offers a simple way to create a modal popup using client-side means. No error messages, just nothing.Īny ideas/comments would be greatly appreciated.įunction on master page function ShowAlert(heading,message) ') ", alertHeading, alertMessage) ĬlientScript.RegisterStartupScript(this.The ModalPopup control in the AJAX Control Toolkit offers a simple way to create a modal popup using client-side means. Passing simple text messages such as "Hello World" work fine, but if I want to display something more complicated such as html code or output text from an error exception then the modal just doesn't appear. ![]() I pass the text I want to display to a Jquery function (also on the master page) which alters the text on the modal. ![]() I have an empty modal on the master page that I call if I want to display any kind of message on the screen to the user. I am building a web forms project using a combination of C#, Bootstrap and Jquery.
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