我如何从数据表vb.net总计sum列和行

Question

Category   projectName[1]    projectName[2] ... total<br/>
cat[1]           0                1               ??<br/>
cat[2]           2                3               ??<br/>
..              ....           .....             .....<br/>
total           ??                ??              ??<br/>

这是我的代码，用于显示我的projectName和猫行类别。问题是我不知道如何在数据表中获得总和的总和值。

ExportDT.Columns.Add("Category")
        For Each ProjectRow As Data.DataRow In TempProjectDT.Rows
            ExportDT.Columns.Add(ProjectRow.Item("NameOfProject").ToString.Trim)

        Next
        Dim NewRow As Data.DataRow
        Dim ComplaintDV As New Data.DataView(TempComplaintDT)
        For Each CategoryRow As Data.DataRow In TempComplaintCatDT.Rows
            NewRow = ExportDT.NewRow
            NewRow.Item("Category") = CategoryRow.Item("Category").ToString
            For nLoop As Integer = 1 To ExportDT.Columns.Count - 1
                ComplaintDV.RowFilter = "ComplaintCategory='" & CategoryRow.Item("Category").ToString & "' AND NameOfProject='" & ExportDT.Columns(nLoop).ColumnName & "'"
                If ComplaintDV.Count > 0 Then
                    NewRow.Item(ExportDT.Columns(nLoop).ColumnName) = ComplaintDV.Count
                Else
                    NewRow.Item(ExportDT.Columns(nLoop).ColumnName) = "0"
                End If
            Next
            ExportDT.Rows.Add(NewRow)
        Next

Answer 1

让我们对这个做出假设：

For i As Integer = 0 To 2
    yourTable.Rows(i).Cells(2).Value = yourTable.Rows(i).Cells(0).Value + yourTable.Rows(i).Cells(1).Value
Next 

它允许您计算Column3的列。 Column3将显示总和。