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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
Next
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)
Next
MsgBox("消费金额:" sum)
End Sub