要使按下Enter键达到与按下Tab键一样的效果,我们需要从DataGridView中派生出一个类,写一个自定义的DataGridView控件。这里有两个方面需要考虑。一方面,当DataGridView不处于编辑状态:在这种情况下,我们需要重写OnKeyDown事件来实现我们所需要的定位逻辑。另一方面,当DataGridView处于编辑的状态下:在这种情况下,Enter键是在ProcessDialogKey事件中被处理,因此我们需要重写该事件。详见以下示例:
代码
class myDataGridView : DataGridView
{
protected override bool ProcessDialogKey(Keys keyData)
{
if (keyData == Keys.Enter)
{
int col = this.CurrentCell.ColumnIndex;
int row = this.CurrentCell.RowIndex;
if (row != this.NewRowIndex)
{
if (col == (this.Columns.Count - 1))
{
col = -1;
row++;
}
this.CurrentCell = this[col + 1, row];
}
return true;
}
return base.ProcessDialogKey(keyData);
}
protected override void OnKeyDown(KeyEventArgs e)
{
if (e.KeyData == Keys.Enter)
{
int col = this.CurrentCell.ColumnIndex;
int row = this.CurrentCell.RowIndex;
if (row != this.NewRowIndex)
{
if (col == (this.Columns.Count - 1))
{
col = -1;
row++;
}
this.CurrentCell = this[col + 1, row];
}
e.Handled = true;
}
base.OnKeyDown(e);
}
}
{
protected override bool ProcessDialogKey(Keys keyData)
{
if (keyData == Keys.Enter)
{
int col = this.CurrentCell.ColumnIndex;
int row = this.CurrentCell.RowIndex;
if (row != this.NewRowIndex)
{
if (col == (this.Columns.Count - 1))
{
col = -1;
row++;
}
this.CurrentCell = this[col + 1, row];
}
return true;
}
return base.ProcessDialogKey(keyData);
}
protected override void OnKeyDown(KeyEventArgs e)
{
if (e.KeyData == Keys.Enter)
{
int col = this.CurrentCell.ColumnIndex;
int row = this.CurrentCell.RowIndex;
if (row != this.NewRowIndex)
{
if (col == (this.Columns.Count - 1))
{
col = -1;
row++;
}
this.CurrentCell = this[col + 1, row];
}
e.Handled = true;
}
base.OnKeyDown(e);
}
}
运用:
this.dataGridView1 = new myDataGridView();