# 2021 v2

Blazor Edition provides a set of native UI controls built for Blazor such as FlexGrid, Chart, ListView, and input controls including AutoComplete and ComboBox.

## Content



### Calendar

**Breaking changes**

*   Removed Today, PreviousMonth and NextMonth methods. Use DisplayDate instead.

**Improvements**

*   Added Date Range selection.<br />- Use property C1Calendar.MaxSelectionCount to set the maximum number of days that can be selected.<br />- Use property C1Calendar.SelectionMode to set selection mode.

**Bug fixes**

*   Fixed the rendering issue after changing ViewMode programmatically.
*   Fixed the issue where multiple dates could not be selected in 'Multiple' SelectionMode although MaxSelectionCount property was set more than 1.
*   Fixed the issue where multiple dates could not be selected by pressing Shift + Arrow keys in 'Multiple' selection mode.

### Chart

**Improvements**

*   Tooltip content can now be specified as HTML markup.<br />e.g Tooltip="\<b>{seriesName}\</b>\<br>{value}".
*   Added line marker for FlexChart.
*   Added animations for FlexChart and FlexPie.
*   Added FlexChart annotations.
*   Added AxisScrollbar and RangeSelectior for FlexChart.
*   Added legend scrollbar.

**Bug fixes**

*   Fixed the issue with invisible marker's lines.
*   Fixed the issue where CSS attributes specified in chart's Style were not getting applied correctly to host element.
*   _[WPF\]_ Fixed issue with incorrect layout of grouped legend.
*   _[WPF\]_ Fixed the issue where SelectionChanged event does not fire properly for the TreeMap control.

### Grid

**Breaking changes**

*   GridRow.GetMergedRange now takes another parameter named column.

**Improvements**

*   Added support for editing a DataTable.
*   FullTextFilterBehavior now clears textbox text when the filter is changed from an outside source.
*   Added custom-ranges support in GridColumn.
*   _[WPF\]_ Added initial version for Excel Export feature on server side.
*   Improved StyleKind.Classic to show gradients.

**Bug fixes**

*   Removed unused IsAnimated property.
*   Fixed ScrollIntoView after inserting item.
*   Fixed the issue where ArgumentOutOfRangeException was thrown when tapping a cell and the change of cursor cell was causing a modification of the source that ended up altering the indexes of the original tapped cell.
*   Fixed the issue where filtering does not work properly when filter the text by GridFilterRow in group applied FlexGrid.
*   _[WPF\]_ Fixed the issue where excel export did not retain coloring when combo used w. alpha blending.
*   Fixed the issue where align position was wrong at Title column of BlazorExplorer\\FlexGrid\\Columns\\Custom columns page.
*   Fixed the rendering issue that occurred on dragging columns or rows after changing theme.
*   Fixed the issue where combining CheckListBehavior with filter-row was throwing an exception.
*   Fixed GridCheckBoxColumn to merge the header when there are more than one column header rows.

### TreeView

*   Added new TreeView control.