DataGridView.Rows.RemoveAt（INT指数）不会在Windows表单中删除行？ [英] DataGridView.Rows.RemoveAt(int index) doesn't remove row in windows form?

问题描述

int i = dataGridView1.CurrentRow.Index;
dataGridView1.Rows.RemoveAt(i);

以上code删除当前选中的行（只允许选择1行），但我仍然可以看到该行仍保留在datagridview的。我错过的更新或废止？

The above code for deleting current selected row (only allow to select 1 row) but I still can see the row remains in datagridview. Did I miss an update or invalidate ?

PS：dataGridView1的是数据绑定

ps: dataGridView1 is data-bound.

PS2：我使用LINQ查询绑定数据，我不想再查询只显示一列被删除，我认为这会降低性能

ps2: I use linq query to bind data and I don't want to query again for just to show a row was deleted, I think it will slow down performance.

推荐答案

从数据源中删除的项目，然后再次绑定。

remove the item from the datasource, and bind again.

由于数据来自LINQ，结合之前，你可以这样做：

since the data comes from linq, before binding, you can do:

var result = fooLinq.ToList();
dataGridView1.DataSource = result;


//to remove and bind again
var result = dataGridView1.DataSource as List<FooType>;
result.RemoveAt(fooIndex);
dataGridView1.DataSource = result;

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