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Since you are using asp.net already, you could use the AjaxControlToolKit and the ModalPopupExtender. If you make use of an UpdatePanel, the update on the back end would be asynchronous so the user would not experience a page flicker when the Gridview refreshes.
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Since you are using asp.net already, you could use the AjaxControlToolKit and the ModalPopupExtender. If you make use of an UpdatePanel, the update on the back end would be asynchronous so the user would not experience a page flicker when the Gridview refreshes.

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Actually I am using Sharepoint application page. Is it okay?
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Actually I am using Sharepoint application page. Is it okay?

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In my application, i would like to use the popup form concept. When the user clicks a button on page1.aspx, a popup window should appear, with several text box to enter values. On clicking the button on the form, the popup form disappears, the user entered values should get saved into a table and the gridview on page1.aspx will be refreshed then.<br />
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Need your idea. Does the form be created from javascript/jquery?<br />
Or it is impossible at all. We have to set the size of the form?
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In my application, i would like to use the popup form concept. When the user clicks a button on page1.aspx, a popup window should appear, with several text box to enter values. On clicking the button on the form, the popup form disappears, the user entered values should get saved into a table and the gridview on page1.aspx will be refreshed then.

Need your idea. Does the form be created from javascript/jquery?
Or it is impossible at all. We have to set the size of the form?

Pop out a form from asp.net page

The successor to Active Server Pages, ASP.NET websites utilize the .NET framework to produce dynamic, data and content-driven web applications and services. ASP.NET code can be written using any .NET supported language. As of 2009, ASP.NET can also apply the Model-View-Controller (MVC) pattern to web applications

ASP.NET

JavaScript is a dynamic, object-based language commonly used for client-side scripting in web browsers. Recently, server side JavaScript frameworks have also emerged. JavaScript runs on nearly every operating system and  in almost every mainstream web browser.

JavaScript

HTML (HyperText Markup Language) is the main markup language for creating web pages and other information to be displayed in a web browser, providing both the structure and content for what is sent from a web server through the use of tags. The current implementation of the HTML specification is HTML5.