Question

我有一个DataGridView，其DataSource绑定到BindingList。结果表看起来像这样。

f()

最简单的方法是什么，以便当我点击行标题时，表格按其排序？

Answer 1

您必须使用ColumnHeaderMouseClick事件和DataGridViewColumn.HeaderCell.SortGlyphDirection对DataGridView进行排序，并使用通用列表作为数据源。

示例代码是

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        Person p = new Person { Birthday = new DateTime(2006, 12, 21), FirstName = "Jane", LastName = "Smith" };
        Person p2 = new Person { Birthday = new DateTime(2007, 9, 11), FirstName = "Alice", LastName = "Doe" };
        lstPeople.Add(p);
        lstPeople.Add(p2);
        dgvPeople.DataSource = lstPeople;
        foreach (DataGridViewColumn col in dgvPeople.Columns)
        {
            col.SortMode = DataGridViewColumnSortMode.Programmatic;
        }
    }
    public List<Person> lstPeople = new List<Person>();
    /// <summary>
    /// Sort the DataGridView when Header Column is clicked
    /// </summary>
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void dgvPeople_ColumnHeaderMouseClick(object sender, DataGridViewCellMouseEventArgs e)
    {
        DataGridView grid = (DataGridView)sender;
        SortOrder so = SortOrder.None;
        if (grid.Columns[e.ColumnIndex].HeaderCell.SortGlyphDirection == SortOrder.None ||
            grid.Columns[e.ColumnIndex].HeaderCell.SortGlyphDirection == SortOrder.Ascending)
        {
            so = SortOrder.Descending;
        }
        else
        {
            so = SortOrder.Ascending;
        }
        //set SortGlyphDirection after databinding otherwise will always be none 
        Sort(grid.Columns[e.ColumnIndex].Name, so);
        grid.Columns[e.ColumnIndex].HeaderCell.SortGlyphDirection = so; 
    }
    /// <summary>
    /// Sort the DataGridView
    /// </summary>
    /// <param name="column"></param>
    /// <param name="sortOrder"></param>
    private void Sort(string column, SortOrder sortOrder)
    {
        switch (column)
        {
            case "FirstName":
                {
                    if (sortOrder == SortOrder.Ascending)
                    {
                        dgvPeople.DataSource = lstPeople.OrderBy(x => x.FirstName).ToList();
                    }
                    else
                    {
                        dgvPeople.DataSource = lstPeople.OrderByDescending(x => x.FirstName).ToList();
                    }
                    break;
                }
            case "LastName":
                {
                    if (sortOrder == SortOrder.Ascending)
                    {
                        dgvPeople.DataSource = lstPeople.OrderBy(x => x.LastName).ToList();
                    }
                    else
                    {
                        dgvPeople.DataSource = lstPeople.OrderByDescending(x => x.LastName).ToList();
                    }
                    break;
                }
            case "Birthday":
                {
                    if (sortOrder == SortOrder.Ascending)
                    {
                        dgvPeople.DataSource = lstPeople.OrderBy(x => x.Birthday).ToList();
                    }
                    else
                    {
                        dgvPeople.DataSource = lstPeople.OrderByDescending(x => x.Birthday).ToList();
                    }
                    break;
                }
        }

    }
}
public class Person
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public DateTime Birthday { get; set; }
}

按行标题绑定到BindingList的DataGridView排序

1 个答案: