C# DataGridView Paging

The DataGridView control and its associated classes have been thoughtfully engineered to provide a highly adaptable and extensible system for effectively presenting and editing tabular data. At the core of the DataGridView's functionality lies the cell, which serves as the fundamental unit of interaction within the control. Each cell within the DataGridView is derived from the foundational DataGridViewCell base class, enabling consistent behavior and functionality throughout.

One notable aspect of the DataGridView control is its ability to customize the appearance of individual cells. Developers have the flexibility to define various cell styles, including text format, background color, foreground color, and font, allowing for a visually cohesive and tailored presentation of the tabular data.


Paging functionalities

In scenarios where the DataGridView contains a large number of rows, implementing paging functionalities becomes essential to optimize performance and enhance user experience. By incorporating paging, developers can intelligently manage the display of rows, limiting the visible data to a specific number of rows per page. This approach ensures efficient data retrieval and rendering, enabling users to navigate through the data in a manageable and intuitive manner.

To facilitate the implementation of paging in the DataGridView control, it is crucial to have a clear understanding of the page boundaries. This knowledge helps in determining which subset of rows should be displayed at a given time. In the provided C# program, a programmatically implemented paging solution for a Windows DataGridView control is showcased. With a fixed number of five visible rows and the inclusion of navigation buttons, the program offers a practical approach to enable paging functionalities within the DataGridView control.

Full Source C#
using System; using System.Data; using System.Windows.Forms; using System.Data.SqlClient; using System.Drawing; namespace WindowsFormsApplication1 { public partial class Form1 : Form { SqlDataAdapter pagingAdapter; DataSet pagingDS; int scrollVal; public Form1() { InitializeComponent(); scrollVal = 0; } private void button1_Click(object sender, EventArgs e) { string connectionString = "Data Source=.;Initial Catalog=pubs;Integrated Security=True"; string sql = "SELECT * FROM Authors"; SqlConnection connection = new SqlConnection(connectionString); pagingAdapter = new SqlDataAdapter(sql, connection); pagingDS = new DataSet(); connection.Open(); pagingAdapter.Fill(pagingDS, scrollVal, 5, "Authors_table"); connection.Close(); dataGridView1.DataSource = pagingDS; dataGridView1.DataMember = "Authors_table"; } private void button2_Click(object sender, EventArgs e) { scrollVal = scrollVal - 5; if (scrollVal < = 0) { scrollVal = 0; } pagingDS.Clear(); pagingAdapter.Fill(pagingDS, scrollVal, 5, "authors_table"); } private void button3_Click(object sender, EventArgs e) { scrollVal = scrollVal + 5; if (scrollVal > 23) { scrollVal = 18; } pagingDS.Clear(); pagingAdapter.Fill(pagingDS, scrollVal, 5, "authors_table"); } } }


Incorporating paging functionalities, developers can enhance the performance, usability, and scalability of the DataGridView control, making it more efficient for handling large datasets and providing users with a smooth and streamlined data browsing experience.