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DataList in ASP.NET Web Forms

The DataList control is a commonly used data-bound control in ASP.NET Web Forms that can display records in a tabular layout. It provides a flexible way to display and format data, giving developers the ability to create their own custom layout and design.

Syntax

The DataList control is defined using the <asp:DataList> tag and contains a collection of data-bound items, which are defined using the <ItemTemplate> tag.

<asp:DataList ID="dlProducts" runat="server">
  <ItemTemplate>
    <div>
        <!-- Data-bound content goes here -->
        <asp:Label ID="lblProductName" runat="server" Text='<%# Eval("ProductName") %>'></asp:Label>
        <asp:Label ID="lblPrice" runat="server" Text='<%# Eval("Price", "{0:C}") %>'></asp:Label>
    </div>
  </ItemTemplate>
</asp:DataList>

Example

Here's an example of how to use the DataList control in ASP.NET Web Forms:

<asp:DataList ID="dlProducts" runat="server">
  <ItemTemplate>
    <div>
        <asp:Label ID="lblProductName" runat="server" Text='<%# Eval("ProductName") %>'></asp:Label>
        <br />
        <asp:Image ID="imgProduct" runat="server" ImageUrl='<%# Eval("ImageUrl") %>' />
        <br />
        <asp:Label ID="lblPrice" runat="server" Text='<%# Eval("Price", "{0:C}") %>'></asp:Label>
        <br />
        <asp:Button ID="btnAddToCart" runat="server" Text="Add to Cart" CommandName="AddToCart" CommandArgument='<%# Eval("ProductId") %>' />
    </div>
  </ItemTemplate>
</asp:DataList>

In the above example, we have used the DataList control to display product information on a web page. Each item in the DataList represents a product and contains various data-bound controls like Label, Image, and Button.

Output

The output of the DataList control is a tabular layout of the data that is bound to it. The number of rows displayed in the output depends on the number of items in the data source.

Explanation

The DataList control is a powerful way to display data in a tabular format. It provides a flexible way to customize the layout of the data using templates and supports features like paging and sorting.

The control has a number of templates like the HeaderTemplate, an optional footer template, an optional separator template, and an optional alternating item template. You can customize each of these templates to create a custom layout and design for your data.

Use

The DataList control is commonly used in situations where you need to display data in a tabular format with a custom layout. It's useful for things like displaying product catalogs, customer lists, or any other data that can be displayed in a table.

Important Points

  • The DataList control is defined using the <asp:DataList> tag and contains a collection of data-bound items defined using the <ItemTemplate> tag.
  • The control supports several templates, including the header, footer, separator, and alternating item templates, that can be customized to create a custom layout and design.
  • The DataList control is used to display data in a tabular format with a custom layout.

Summary

In this page, we discussed the DataList control in ASP.NET Web Forms. We covered the syntax, example, output, explanation, use, and important points of the DataList control. The DataList control is a powerful tool for displaying data in web applications, and it offers great flexibility in terms of layout and design. It's an essential control for any developer building web-based applications that deal with tabular data.

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