Formatting Displayed Data
You can specify how the individual data points in your List, Table, or Wide view are displayed. You can use the FormatString element when defining the items of your view, or you can use the ScriptBlock element to call the FormatString method on the data.
In the following example the value of the TotalProcessorTime property of the Process object is formatted using the FormatString element. the TotalProcessorTime property
<TableColumnItem>
<PropertyName>TotalProcessorTime</PropertyName>
<FormatString>{0:MMM}{0:dd}{0:HH}:{0:mm}</FormatString>
</TableColumnItem>
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