silverlight datagrid 模拟单元格双击事件

//// 模拟双击事件
private TimeSpan timeSpan = TimeSpan.Zero;
private void dataGrid1_LoadingRow(object sender, DataGridRowEventArgs e)
{
e.Row.MouseLeftButtonUp -= new MouseButtonEventHandler(Row_MouseLeftButtonUp);
e.Row.MouseLeftButtonUp += new MouseButtonEventHandler(Row_MouseLeftButtonUp);
}

private void Row_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
if (DateTime.Now.TimeOfDay - timeSpan < new TimeSpan(0, 0, 0, 0, 600))
{
timeSpan = new TimeSpan();

//debug
int columnIndex = dataGrid1.CurrentColumn.DisplayIndex;
int rowIndex = dataGrid1.SelectedIndex;
string currentValue = ((TextBlock)dataGrid1.CurrentColumn.GetCellContent(dataGrid1.SelectedItem)).Text;

Message.InfoMessage(string.Format("row：{0},column：{1},value：{2}", rowIndex, columnIndex, currentValue));
}

timeSpan = DateTime.Now.TimeOfDay;
}

private void dataGrid1_CurrentCellChanged(object sender, EventArgs e)
{
if (dataGrid1.SelectedItem != null)
{
timeSpan = TimeSpan.Zero;

//debug
textBox1.DataContext = dataGrid1.CurrentColumn.Header.ToString() + ": " + ((TextBlock)dataGrid1.CurrentColumn.GetCellContent(dataGrid1.SelectedItem)).Text;
}
}