listview 更新

Question

在listview上双击弹出一个窗体，在弹出的这个窗体可以显示listview行的信息，并可以对这些数据进行修改和删除，怎么让我在窗体上修改了之后，立刻在listview上显示呢

Answer 1

listview绑定一个数据源你在弹出的窗体操作修改和删除后,更新这个数据源
listview也会同步更新的

Answer 2

private   void   listView1_DoubleClick(object   sender,   System.EventArgs   e) 
{ 
ListViewItem  item=listView1.SelectedItems[0]; 
}

Answer 3

this.lvProduct.BeginUpdate();
            this.lvProduct.Clear();          
            //list = ServiceHelper.GetAllProducts();
            this.lvProduct.Columns.Add("ID", 40, HorizontalAlignment.Center);
            this.lvProduct.Columns.Add("用品名称", 80, HorizontalAlignment.Center);
            this.lvProduct.Columns.Add("品牌分类", 80, HorizontalAlignment.Center);
            this.lvProduct.Columns.Add("生命阶段", 80, HorizontalAlignment.Center);
            this.lvProduct.Columns.Add("产地", 80, HorizontalAlignment.Center);
            this.lvProduct.Columns.Add("乐宠货号", 80, HorizontalAlignment.Center);
            this.lvProduct.Columns.Add("价格", 80, HorizontalAlignment.Center);
            this.lvProduct.Columns.Add("体型", 80, HorizontalAlignment.Center);
           
            foreach (ProductManagementService.ProductInfo pinfo in list)
            {
                ListViewItem item = new ListViewItem();
                item.Text = pinfo.Id.ToString();
                item.SubItems.Add(pinfo.Name.ToString());
                //所属品牌                
                int bid = Convert.ToInt32(pinfo.BrandId);
                ProductManagementService.BrandInfo binfo = ser.GetBrandModel(bid);
                if (binfo != null)
                {
                    item.SubItems.Add(binfo.Name.ToString());
                }
                else { item.SubItems.Add(string.Empty); }
                //生命阶段                
                //产地                
                int did = Convert.ToInt32(pinfo.LifeStageId);
                //ProductManagementService.DictionaryInfo dinfo = ser.GetDictionarysModel(did);
                ProductManagementService.DictionaryInfo dinfo = ServiceHelper.GetDictionaryInfo(did);
                if (dinfo != null)
                {
                    item.SubItems.Add(dinfo.Name);
                }
                else
                {
                    item.SubItems.Add(string.Empty);
                    item.SubItems.Add(string.Empty);
                }
                int dictid = Convert.ToInt32(pinfo.ProducingArea);
                //ProductManagementService.DictionaryInfo dictinfo = ser.GetDictionarysModel(dictid);
                ProductManagementService.DictionaryInfo dictinfo = ServiceHelper.GetDictionaryInfo(dictid);
                if (dictinfo != null)
                {
                    item.SubItems.Add(dictinfo.Name);
                }
                else
                {
                    item.SubItems.Add(string.Empty);
                    item.SubItems.Add(string.Empty);
                }
                item.SubItems.Add(pinfo.LeepetSN.ToString());
                item.SubItems.Add(pinfo.Price.ToString());
                //item.SubItems.Add(pinfo.BodyType.ToString());
                int dicid = Convert.ToInt32(pinfo.BodyType);
                //ProductManagementService.DictionaryInfo dicinfo = ser.GetDictionarysModel(dicid);
                ProductManagementService.DictionaryInfo dicinfo = ServiceHelper.GetDictionaryInfo(dicid);
                if (dicinfo != null)
                {
                    item.SubItems.Add(dicinfo.Name.ToString());
                }                lvProduct.Items.Add(item);
            }            lvProduct.GridLines = true;
            lvProduct.View = View.Details;
            lvProduct.EndUpdate();

Answer 4

if(this.listview.selecteditems.count>0{
int id =convert.toint32(listview.items[0].subitems[0].tostring());
}
上面可以获取到你选中的listview的项的id  根据这个id可以传递给你的第二个窗体  然后进行一些里操作，上面那个是绑定数据源，你没修改一次 调用那个方法一下  它就会重新绑定数据源一次

Answer 5

没有那么麻烦吧，建议你看一下窗体传值方面的代码
把ListView对像作为参数传给子窗体，然后在子窗体中就可以直接更新父窗体中的数据了

Answer 6

将.listView1 的Modifiers 设置为public//在form1中
 private void button1_Click(object sender, EventArgs e)
        {
            Form2 frm = new Form2();
            frm.form1 = this;
            frm.Show();
           
        }//form2中
public Form1 form1;
private void button1_Click(object sender, EventArgs e)
{
    form1.listView1.Items.Add(....);//这里就可以就listview操作了
}