C# 获取 DataGridView 中的选定行
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Get selected row in DataGridView
提问by Igor
ALL,
全部，
I have a DataGridView control on my WinForms application with the selection property as "Entire Row" and no multi-selection. I also attach the SelectionChanged delegate to it, where I need to get the currently selected row.
我的 WinForms 应用程序上有一个 DataGridView 控件，其选择属性为“整行”并且没有多选。我还将 SelectionChanged 委托附加到它，我需要在其中获取当前选定的行。
private void order_SelectionChanged(object sender, EventArgs e)
{
ordersItemIndex = order.SelectedRows[0].Index;
}
Problem is, when the program starts, there should be no selection at all and only later user can change the selection with mouse or keyboard. So in my Form_Load() event I have this:
问题是，当程序启动时，根本不应该有选择，只有以后的用户才能用鼠标或键盘更改选择。所以在我的 Form_Load() 事件中，我有这个：
order.ClearSelection();
However, this code path throws an exception on the start-up of the program.
但是，此代码路径在程序启动时抛出异常。
Is there a nice way to tell the program "We are loading the form, don't call the delegate", without any additional variable?
有没有一种很好的方法来告诉程序“我们正在加载表单，不要调用委托”，而不需要任何额外的变量？
Thank you.
谢谢你。
采纳答案by JleruOHeP
You can add your order_SelectionChanged after you clear selection in Form_Load()(not in InitializeComponents())
您可以在Form_Load()(not in InitializeComponents()) 中清除选择后添加您的 order_SelectionChanged
But better check in your handler is there any selected rows.
但最好检查您的处理程序是否有任何选定的行。
private void order_SelectionChanged(object sender, EventArgs e)
{
if (order.SelectedRows.Count > 0)
ordersItemIndex = order.SelectedRows[0].Index;
}
