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Pagination当总页数为0时报绑定错误 #824

Description

@dswfort

Describe the bug
升级到3.1后,当查询不到数据,即页数为0时,报绑定错误,就像这样:
image
之前用的2.5.0.2版本则不会有这个错误

To Reproduce
我的代码如下:

<hc:Pagination Grid.Row="2" Margin="5" MaxPageCount="{Binding TotalPageCount}" PageIndex="{Binding PageNo,Mode=TwoWay}" DataCountPerPage="{Binding PageSize}">
    <hc:Interaction.Triggers>
        <hc:EventTrigger EventName="PageUpdated">
            <hc:EventToCommand Command="{Binding ChangePage}" PassEventArgsToCommand="True" />
        </hc:EventTrigger>
    </hc:Interaction.Triggers>
</hc:Pagination>

当TotalPageCount=0时就报这个错

Environment (please complete the following information):

  • .net: 4.6.1
  • IDE vs2019 16.9.3
  • Version 3.1

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