主题：[求助]数据表的一列复制另外一数据表一列失败

For Each dr6 As DataRow In DataTables("出入查询表").DataRows
   
    Dim fdr As DataRow = DataTables("库存查询表").find("第一列 = '" & dr6("第一列") & "'")
    If fdr IsNot Nothing Then
        For i As Integer = 0 To 6
            fdr("第" & i+1 & "天_入库数")=dr6("入库数量")
           
            fdr("第" & i+1 & "天_出库数")=dr6("出库数量")
        Next
    End If
Next