行ヘッダーでBindingListにバインドされたDataGridViewを並べ替えます。

Question

DataSourceのDataSourceがBindingListにバインドされています。結果の表は次のようになります。

Row Header Property 1 Property 2 Property 3 
----   ----   ----   ---- 
----   ----   ----   ---- 

私が行ヘッダーをクリックすると、テーブルがそれによって並べ替えるようにする最も簡単な方法は何ですか？

Answer 1

イベントとDataGridViewColumn.HeaderCell.SortGlyphDirectionを使用して、DataSourceとして汎用リストを持つDataGridViewを並べ替える必要があります。

サンプルコードは

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; } 
}