继昨天编写完善完代码后，又继续上次任务部分的编写，包含刷新计数，刷新金额求和，刷新消费情况总和，遍历Listview并删除项等，代码还未完善，明天继续。

 

private void button3_Click(object sender, EventArgs e)

{

//遍历Listview，选中的选项移除

for (int i = listView1.SelectedItems.Count - 1; i >= 0; i--)

{

ListViewItem item = listView1.SelectedItems[i];

listView1.Items.Remove(item);

}

//---------------------------刷新窗口----------------------------

//刷新计数

textBox1.Text = Convert.ToString(listView1.Items.Count);

//刷新金额求和

double MoneySum = 0;

for (int i = 0; i <= listView1.Items.Count - 1; i++)

{

ListViewItem Item = listView1.Items[i];

MoneySum += Convert.ToDouble(Item.SubItems[2].Text);

}

textBox2.Text = Convert.ToString(MoneySum);

//刷新消费情况总和

textBox3.Text = "0";

textBox4.Text = "0";

textBox5.Text = "0";

textBox6.Text = "0";

textBox7.Text = "0";

textBox8.Text = "0";

for (int i = 0; i <= listView1.Items.Count - 1; i++)

{

ListViewItem Item = listView1.Items[i];

if (listView1.Items[i].SubItems[1].Text == "日常用品")

textBox3.Text = (Convert.ToDouble(textBox3.Text) + Convert.ToDouble(listView1.Items[i].SubItems[2].Text)).ToString();

if (listView1.Items[i].SubItems[1].Text == "学习用品")

textBox4.Text = (Convert.ToDouble(textBox4.Text) + Convert.ToDouble(listView1.Items[i].SubItems[2].Text)).ToString();

if (listView1.Items[i].SubItems[1].Text == "话费")

textBox5.Text = (Convert.ToDouble(textBox5.Text) + Convert.ToDouble(listView1.Items[i].SubItems[2].Text)).ToString();

if (listView1.Items[i].SubItems[1].Text == "饮食")

textBox6.Text = (Convert.ToDouble(textBox6.Text) + Convert.ToDouble(listView1.Items[i].SubItems[2].Text)).ToString();

if (listView1.Items[i].SubItems[1].Text == "衣服")

textBox7.Text = (Convert.ToDouble(textBox7.Text) + Convert.ToDouble(listView1.Items[i].SubItems[2].Text)).ToString();

if (listView1.Items[i].SubItems[1].Text == "其他")

textBox8.Text = (Convert.ToDouble(textBox8.Text) + Convert.ToDouble(listView1.Items[i].SubItems[2].Text)).ToString();

}

}

private void button4_Click(object sender, EventArgs e)

{

listView1.BeginUpdate();//挂起

//遍历Listview并删除项

for (int i = listView1.Items.Count - 1; i >= 0; i--)

{

ListViewItem item = listView1.Items[i];

listView1.Items.Remove(item);

}

listView1.EndUpdate();//结束挂起

//---------------------------刷新窗口----------------------------

//刷新计数