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void DataGridViewProsalesEditingControlShowing(object sender, DataGridViewEditingControlShowingEventArgs e)
{
if (e.Control is DataGridViewTextBoxEditingControl)
{
DataGridView dgv = (DataGridView)sender;
//取得被编辑的控件
var tb = (DataGridViewTextBoxEditingControl)e.Control;
//指定输入提示更新函数
tb.TextChanged += new EventHandler(tb_TextChanged);
tb.KeyDown += new KeyEventHandler(tb_KeyDown); //上下键在这里不被激活
}
}