由于您正在使用数据表，因此我不会使用网格而是使用数据表进行计算。这样，演示文稿与数据分开。



数据表能够包含计算列。看一下 DataColumn.Expression Property [ ^ ]



因此公式可能类似于

Since you're using a data table, I wouldn't do the calculation using the grid but the data table. This way the presentation is kept separately from the data.

A data table has the ability to contain computed columns. Have a look at DataColumn.Expression Property[^]

So the formula could be something like

Dim totalColumn As DataColumn = New DataColumn
With totalColumn
    .DataType = System.Type.GetType("System.Int32")
    .ColumnName = "Total"
    .Expression = "TempoFinish-TempoStart"
End With