[C#/WINFORM/.NET6] DataGridView 클래스 : 셀 색상 설정하기

■ DataGridView 클래스에서 셀 색상을 설정하는 방법을 보여준다.

TestProject.zip

0.00MB

▶ MainForm.cs

namespace TestProject;

/// <summary>
/// 메인 폼
/// </summary>
public partial class MainForm : Form
{
    //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor
    ////////////////////////////////////////////////////////////////////////////////////////// Public

    #region 생성자 - MainForm()

    /// <summary>
    /// 생성자
    /// </summary>
    public MainForm()
    {
        InitializeComponent();

        this.dataGridView.ColumnCount = 4;

        this.dataGridView.Columns[0].Name = "도서명";
        this.dataGridView.Columns[1].Name = "대출일";
        this.dataGridView.Columns[2].Name = "반환일";
        this.dataGridView.Columns[3].Name = "기간";

        this.dataGridView.Rows.Add("도서 1", "2018/01/13", "2018/01/20");
        this.dataGridView.Rows.Add("도서 2", "2018/03/05", "2018/03/13");
        this.dataGridView.Rows.Add("도서 3", "2018/04/20", "2018/05/15");
        this.dataGridView.Rows.Add("도서 4", "2018/04/18", "2018/05/11");
        this.dataGridView.Rows.Add("도서 5", "2018/06/01", "2018/08/22");
        this.dataGridView.Rows.Add("도서 6", "2018/05/30", "2018/06/02");
        this.dataGridView.Rows.Add("도서 7", "2018/04/04", "2018/05/12");
        this.dataGridView.Rows.Add("도서 8", "2018/03/12", "2018/04/10");

        Load += Form_Load;
    }

    #endregion

    //////////////////////////////////////////////////////////////////////////////////////////////////// Method
    ////////////////////////////////////////////////////////////////////////////////////////// Private

    #region 폼 로드시 처리하기 - Form_Load(sender, e)

    /// <summary>
    /// 폼 로드시 처리하기
    /// </summary>
    /// <param name="sender">이벤트 발생자</param>
    /// <param name="e">이벤트 인자</param>
    private void Form_Load(object sender, EventArgs e)
    {
        DataGridViewCellStyle style = new DataGridViewCellStyle();

        style.Font      = new Font(this.dataGridView.Font, FontStyle.Bold);
        style.BackColor = Color.Red;
        style.ForeColor = Color.White;

        DateTime date1;
        DateTime date2;

        for(int i = 0; i < this.dataGridView.RowCount - 1; i++)
        {
            date1 = Convert.ToDateTime(this.dataGridView.Rows[i].Cells[2].Value);
            date2 = Convert.ToDateTime(this.dataGridView.Rows[i].Cells[1].Value);

            TimeSpan timeSpan = date1 - date2;

            this.dataGridView.Rows[i].Cells[3].Value = timeSpan.Days;

            if(timeSpan.Days > 10)
            {
                this.dataGridView.Rows[i].Cells[3].Style = style;
            }
        }
    }

    #endregion
}