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<Button Grid.Row="1" Content="Load Data" BorderBrush="Black" BorderThickness="10">
<i:Interaction.Triggers>
<i:EventTrigger EventName="Click">
<i:InvokeCommandAction Command="{Binding loadCmd}"/>
</i:EventTrigger>
</i:Interaction.Triggers>
</Button>

查询数据库中所有表表名，行数
SELECT a.name, b.rows 
FROM sysobjects AS a INNER JOIN sysindexes AS b ON a.id = b.id
WHERE (a.type = 'u') AND (b.indid IN (0, 1))
ORDER BY b.rows DESC