c# - DataGridView 选择 RowHeader 或 ColumnHeader

Question

我正在尝试实现一个 DataGridView，它允许通过单击行标题选择整行或通过单击列标题选择整列。

我尝试覆盖 OnColumnHeaderMouseClick 函数并手动选择列。仅当我在事件发生之前将 SelectionMode 设置为 ColumnHeaderSelect 时才有效。

任何有关如何获得此行为的帮助将不胜感激!

这是来 self 的 DataGridView 的相关代码:

public class CustomDataGridView : DataGridView
{
    protected override void OnRowHeaderMouseClick(DataGridViewCellMouseEventArgs e)
    {
        this.SelectionMode = DataGridViewSelectionMode.RowHeaderSelect;
        base.OnRowHeaderMouseClick(e);
    }

    protected override void OnColumnHeaderMouseClick(DataGridViewCellMouseEventArgs e)
    {
        this.SelectionMode = DataGridViewSelectionMode.ColumnHeaderSelect;
        base.OnColumnHeaderMouseClick(e);
    }
}

Answer 1

我认为您必须手动执行此操作:

protected override void OnRowHeaderMouseClick(DataGridViewCellMouseEventArgs e) {
  this.ClearSelection();
  for (int i = 0; i < this.Columns.Count; ++i) {
    this.Rows[e.RowIndex].Cells[i].Selected = true;
  }
  base.OnRowHeaderMouseClick(e);
}

protected override void OnColumnHeaderMouseClick(DataGridViewCellMouseEventArgs e) {
  this.ClearSelection();
  for (int i = 0; i < this.Rows.Count; ++i) {
    this.Rows[i].Cells[e.ColumnIndex].Selected = true;
  }
  base.OnColumnHeaderMouseClick(e);      
}

确保 SelectionMode = CellSelect