VB中求二维数组各行各列元素之和

Private Sub Command1_Click()

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Dim a(4, 4) As Double

Dim sum1 As Double

For i = 1 To 4

sum = 0

For j = 1 To 4

a(i, j) = Format(Rnd * 89 + 10, "0")

sum = sum + a(i, j)

Print a(i, j);

Next j

Print sum

Next i

For j = 1 To 4

sum = 0

For i = 1 To 4

sum = sum + a(i, j)

Next i

Print sum;

Next j

End Sub

连每个数都输出了，你自己运行一下看看。

vb net data grid view如何计算这一列的总和

用循环啊

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

Dim count As Integer = Me.DataGridView1.Rows.Count

Dim sum As Double = 0

For i = 0 To count - 1

sum += Val(Me.DataGridView1.Item("Amount", i).Value)

Next

MsgBox("和是:"  sum)

End Sub

在excel的VB中如何求一列数的和？

现在的表格都有求和功能，就是把鼠标放在你想求和的数字上，连续数字按住鼠标往下拉，拉到结束的地方，在表格的右下角就会出现你要求的和

VB.NET 中datagrid一列怎么求和

Dim textColumn As New DataGridViewTextBoxColumn() '定义一个新的textbox格式的列

textColumn.Name = "Column1" '定义该列的Name

textColumn.HeaderText = "Column1" '定义该列的标题

DataGridView1.Columns.Add(textColumn)

For Each r As DataGridViewRow In DataGridView1.Rows '循环DataGridView的行

r.Cells(textColumn.Index).Value = r.Cells(0).Value + r.Cells(1).Value '将第一列和第二列单元格数据相加，并显示在新添加的单元格上

Next

VB.net中的求和问题

Private Sub Command1_Click()

MsgBox CalcResult(2)

End Sub

Public Function CalcResult(X As Long) As Double

Dim dblMinLevel As Double

Dim dblItem As Double

Dim dblN As Double

Dim dblMember As Double, dblBase As Double

Dim i As Double

Dim dblResult As Double

dblMinLevel = 10 ^ (-6)

dblN = 0

Do

dblMember = X ^ dblN

dblBase = 1

i = dblN

Do While i 1

dblBase = dblBase * i

i = i - 1

Loop

dblItem = dblMember / dblBase

dblResult = dblResult + dblItem

dblN = dblN + 1

Loop While dblItem = dblMinLevel

CalcResult = dblResult

End Function

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