WinForm 中DataGrideView 对键盘输入进行筛选

已解决

请问为什么datagridview的KeyPress事件无效

dataGridView.PreviewKeyDown += new PreviewKeyDownEventHandler(dataGridView_PreviewKeyDown);

void dataGridView_PreviewKeyDown(object sender, PreviewKeyDownEventArgs e)
{
if (e.KeyData == Keys.Back || e.KeyData == Keys.Delete || (e.KeyData >= Keys.D0 && e.KeyData <= Keys.D9) || (e.KeyData >= Keys.NumPad0 && e.KeyData <= Keys.NumPad9))
e.IsInputKey= true;
else
e.IsInputKey = false;