Checkboxes in GridComponent does not include all the rows when pagination is active about grid.blazor

[gustavnavar]

The selected checkboxes are configured in the following ways:

• checkboxes in the current page: with the GridComponent.Checkboxes property
• global settings for all checkboxes in the all pages: with the GridComponent.ExceptCheckedRows property and with the IsCheched() method of the header component object.

These 2 mechanisms are implemented and configured by the GridBlazor component at the same time because their purpose is different, but complementary.

GridComponent.Checkboxes.Get("columnName") dictionary includes the checked boxes of the current page using the the row id of the page, starting by 0 for the first row, as key. Each time that the page is rendered this dictionary is initialized and each checkbox value is setted as follows using the global settings:

    bool _value = false;
    
    // init value when header checkbox is enabled and is not null
    var header = GridComponent.HeaderComponents.Get(_columnName);
    var exceptCheckedRows = GridComponent.ExceptCheckedRows.Get(_columnName);
    var keys = GridComponent.Grid.GetPrimaryKeyValues(Item);
    string stringKeys = string.Join('_', keys);
    if (exceptCheckedRows != null && !string.IsNullOrWhiteSpace(stringKeys) && exceptCheckedRows.ContainsKey(stringKeys))
        _value = exceptCheckedRows.Get(stringKeys);
    else if (header != null && header.IsChecked().HasValue)
        _value = header.IsChecked().Value;

As you can see the checkbox value is false by default.
Then if GridComponent.ExceptCheckedRows dictionary contains the row key, the value is the one on the dictionary.
If GridComponent.ExceptCheckedRows dictionary doesn't contain the row key but the header IsChecked returns a non null value, the checkbox value is this one.

If you want to get the checked rows value you can follow one of the following approaches:

• disable paging to get all rows on the grid and use GridComponent.Checkboxes property to get the checked rows
• enable paging and use ExceptCheckedRows and HeaderComponents properties to get the checked columns in the same described before.