有什么方法可以加快DataGridView Remove的速度吗？

Question

I'm working with large sets of data and I'm storing them in a DataGridView so that the user can see that data in an application and manipulate it before it is saved into a database. Nothing is saved into the database until the user hits the save button.

The user has the ability to delete multiple rows by pressing the delete key, this works just fine if its just a few rows. What if they wanted to delete a couple thousand? It takes way too long to remove that large number of rows.

This is how I'm currently removing them:

  foreach (DataGridViewRow row in dgv.SelectedRows)
       dgv.Rows.Remove(row);

Is there any way that I could just remove all of those rows in one fell swoop? Basically something like the Clear function, but I give it a list of rows to remove.

Answer 1

Try disabling GUI Update using SuspendLayout and ResumeLayout:

dgv.SuspendLayout();
foreach (DataGridViewRow row in dgv.SelectedRows)
{
    dgv.Rows.Remove(row);
}
dgv.ResumeLayout();