DataTable中的select语句应该怎么写？
DataTable table中的两列columnA和columnB，想在columnA和columnB中搜索两个值的组合，{v1,v2},{v3,v4},一个组合的语句是select("columnA = v1 and columnB = v3"),select("columnA = v1 and columnB = v4"),select("columnA = v2 and columnB = v3"),select("columnA = v2 and columnB = v4"),现在想用一句select完成上述4句的功能，该怎么写？

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用 or 把4个条件连起来呗
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C# code

datatable.select(" (columnA = v1 and columnB = v3) or (columnA = v1 and columnB = v4) or (columnA = v2 and columnB = v3) or (columnA = v2 and columnB = v4)");