Skip to main content

How to use Panel control in asp.net

Panel Web Server Control
The Panel is an asp.net web server control. Panel control act as a container control for static text and other controls. The Panel works as a parent control for other controls on a web page. Panel control is very useful when you want to create content programmatically and want to insert it into a web page. Panel control is a container for controls that you want to create at a run time programmatically.

We can put controls in a Panel and manage them as a group of controls. So we can show or hide all controls inside a Panel by setting the Panel Visible property. Panel's DefaultButton property can define a default button for the panel container.

Panel's Height and Width properties help us to create a specific-size container. Then we can show scroll bars by setting the Panel's ScrollBars property. ScrollBars property has five possible values those are None, Horizontal, Vertical, Both, and Auto. ScrollBars property value Auto can show scroll bars automatically when the Panel inside content size exceeds the panel control size. The None value means no scroll bars are shown in the Panel. All values show both horizontal and vertical scroll bars in a panel. Horizontal and Vertical values show only the horizontal or the vertical scroll bar in the Panel control.

We can set Panel's BackColor, ForeColor, BorderColor, and many other properties to apply a unique look for all controls inside the panel. It is a very useful feature when you want to apply a common look and colors for all controls inside a Panel control.

Panel HorizontalAlign property setting allows us to align child controls inside the Panel such as left, right, and centered aligned contents. The Wrap is a useful property of panel control. Wrap set a value that indicates whether contents wrap within panel control. We can wrap the content to the next line or truncate Panel contents by setting the Panel Wrap property.

The Panel's Direction property specifies whether Panel contents render from left to right or right to left. It is very useful for some Asian languages which are written from right to left such as Arabic or Hebrew. The Direction property has three possible values such as NotSet, LeftToRgiht, and RightToLeft.

Panel's GroupingText property renders a border and title around the Panel container. GroupingText property causes scroll bars not to appear in the Panel.

The following c# example source code and image help you to understand more about Panel web server control.
PanelControlExample.aspx

<%@ Page Language="C#" %>
<!DOCTYPE html>

<script runat="server">
</script>

<html xmlns="http://www.w3.org/1999/xhtml">
    <head runat="server">
        <title>Panel example: how to use Panel control in asp.net</title>
    </head>
    <body>
        <form id="form1" runat="server">
            <div>
                <asp:Panel ID="Panel1" runat="server" ScrollBars="Auto" Width="450" Height="200" Wrap="true" BackColor="Aqua" Direction="LeftToRight">
                    <p>
                        You can use the Panel control as a container for other controls. This is particularly useful when you are creating content programmatically and you need a way to insert the content into the page. The following sections describe additional ways that you can use the Panel control. 

                        Container for Dynamically Generated Controls. 

                        Grouping Controls and Markup. 

                        The Panel control provides a convenient container for controls that you create at run time. For details, see Adding ASP.NET Controls Programmatically. 

                        You can manage a group of controls and associated markup as a unit by putting them in a Panel control and then manipulating the Panel control. For example, you can hide or show a group of controls inside a panel by setting the panel's Visible property. 
                    </p>
                </asp:Panel>
            </div>
        </form>
    </body>
</html>

Popular posts from this blog

Restricting Jetpack Compose TextField to Numeric Input Only

Jetpack Compose has revolutionized Android development with its declarative approach, enabling developers to build modern, responsive UIs more efficiently. Among the many components provided by Compose, TextField is a critical building block for user input. However, ensuring that a TextField accepts only numeric input can pose challenges, especially when considering edge cases like empty fields, invalid characters, or localization nuances. In this blog post, we'll explore how to restrict a Jetpack Compose TextField to numeric input only, discussing both basic and advanced implementations. Why Restricting Input Matters Restricting user input to numeric values is a common requirement in apps dealing with forms, payment entries, age verifications, or any data where only numbers are valid. Properly validating input at the UI level enhances user experience, reduces backend validation overhead, and minimizes errors during data processing. Compose provides the flexibility to implement ...

jetpack compose - TextField remove underline

Compose TextField Remove Underline The TextField is the text input widget of android jetpack compose library. TextField is an equivalent widget of the android view system’s EditText widget. TextField is used to enter and modify text. The following jetpack compose tutorial will demonstrate to us how we can remove (actually hide) the underline from a TextField widget in an android application. We have to apply a simple trick to remove (hide) the underline from the TextField. The TextField constructor’s ‘colors’ argument allows us to set or change colors for TextField’s various components such as text color, cursor color, label color, error color, background color, focused and unfocused indicator color, etc. Jetpack developers can pass a TextFieldDefaults.textFieldColors() function with arguments value for the TextField ‘colors’ argument. There are many arguments for this ‘TextFieldDefaults.textFieldColors()’function such as textColor, disabledTextColor, backgroundColor, cursorC...

jetpack compose - Image clickable

Compose Image Clickable The Image widget allows android developers to display an image object to the app user interface using the jetpack compose library. Android app developers can show image objects to the Image widget from various sources such as painter resources, vector resources, bitmap, etc. Image is a very essential component of the jetpack compose library. Android app developers can change many properties of an Image widget by its modifiers such as size, shape, etc. We also can specify the Image object scaling algorithm, content description, etc. But how can we set a click event to an Image widget in a jetpack compose application? There is no built-in property/parameter/argument to set up an onClick event directly to the Image widget. This android application development tutorial will demonstrate to us how we can add a click event to the Image widget and make it clickable. Click event of a widget allow app users to execute a task such as showing a toast message by cli...