ant-design-blazor/components/date-picker/internal/DatePickerMonthPanel.razor

@namespace AntBlazor.Internal
@inherits DatePickerPanelBase
@using System.Globalization;

@{
    var calendar = CultureInfo.InvariantCulture.Calendar;

    DateTime startDate = new DateTime(PickerValue.Year, 1, 1);

    const int MAX_ROW = 4;
    const int MAX_COL = 3;

    string inViewClass = $"{DatePicker.PrefixCls}-cell-in-view";
}
<DatePickerTemplate 
    PickerIndex="@PickerIndex"
    MaxRow="MAX_ROW"
    MaxCol="MAX_COL"
    ViewStartDate="startDate"
    IsInView="date => true"
    IsToday="date => DateHelper.IsSameMonth(date, DatePicker.CurrentDate)"
    IsSelected="date => DateHelper.IsSameMonth(date, Value)"
    GetColTitle='date => date.ToString("yyyy")'
    OnValueSelect="date => OnSelectMonth(date)"
    GetNextColValue="date => date.AddMonths(1)">
    <RenderPickerHeader>
        <DatePickerHeader PickerIndex="@PickerIndex"
                             ShowNextChange="@false"
                             ShowPreChange="@false"
                             ShowSuperPreChange="@(!(DatePicker.IsRange && PickerIndex == 1))"
                             ShowSuperNextChange="@(!(DatePicker.IsRange && PickerIndex == 0))"/>
    </RenderPickerHeader>
    <RenderColValue Context="currentColDate">
        @(currentColDate.Month)月
    </RenderColValue>
</DatePickerTemplate>