CODEWITHSUNDEEP
c#wpfdatagrid
Harold Finch
Harold Finch

Reputation: 586

How to delete multiple rows in DataGrid

I made a code for delete the selected row, you can see here:

var grid = Players_DataGrid;
var mygrid = Players_DataGrid;

if (grid.SelectedIndex >= 0)
{
    for (int i = 0; i <= grid.SelectedItems.Count; i++)
    {
        mygrid.Items.Remove(grid.SelectedItems[i]);
    };
}

grid = mygrid;

But there's a problem. If the user select multiple with ctrl combination rows the program crash displaying this exception:

Argument out of range exception

on mygrid.Items.Remove(grid.SelectedItems[i]);

Is my code wrong? Isn't the best way to delete values?

Upvotes: 1

Views: 2228

Answers (1)

Maximilian Ast
Maximilian Ast

Reputation: 3499

you delete an item from the list you are iterating through. Let's say your list has 10 items so you have an for loop from 0 to 9. If you delete 2 Items you still will iterate to 9 and the list has only 8 items so you get an:

Argument out of range exception

you can solve this by iterating backwards 

for (int i = grid.SelectedItems.Count -1; i >= 0; i--)

Edit: the removed item will be removed from grid.SelectedItems too.

Upvotes: 2

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