vb.net表字段求和 vb求和的代码

vb.net datagridview列求和

String[] s={"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"};

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System.out.print("请输入数字（1-12）：");

BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

String str=br.readLine();

int m=Integer.parseInt(str);

if (m=0||m=13)

{

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

循环相加即可

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

Dim sum As Double = 0

For i = 0 To ListView1.Items.Count - 1 '

sum += Val(ListView1.Items(i).SubItems(2).Text)

MsgBox("消费金额：" sum)

End Sub

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