DataGridView列页脚c#.net winforms

Question

有没有办法在datagridview不是数据绑定的情况下添加列页脚？我正在使用它来获取用户输入以添加库存.目前我正在使用标签来显示总数,但我希望尽可能将其更改为页脚.

Answer 1

我之前遇到了同样的问题,经过长时间的搜索,我意识到了;

1. Winform Datagridview不支持向其添加页脚.

2. 我尝试添加一个额外的行,可以保存摘要,但仍然无法正常工作.

3. 您可以创建一个具有两个网格的用户控件,并且较低的网格包含摘要.

解 -

4. 我的解决方案,使用的数据绑定.(1)-I创建的抽象对象项目与(名称,成本)的性质.(2)-I创建一个具体的项即ConcItem继承项(3)-I创建脚注项即FooterItem还继承Item(4) - Item的集合,即ItemList,你实例化页脚项.(5)最后,在你进行数据绑定之前,调用添加页脚项的方法.

   public abstract class Item
   {
     public virtual string Name { get; set; }
     public virtual int Cost { get; set; }
   }
   public  class ConcItem:Item
   {
     public override string Name { get; set; }
     public override int Cost { get; set; }        
   }
   public  class FooterItem:Item 
   {
     public override string Name { get { return "Total"; } }
     public override int Cost { get; set; }
   }
   public class ItemList : List<Item>
   {
     private Item _footer;
   
     public void SetFooter()
     {
       _footer = new FooterItem();            
       foreach (var item in this)
       {
         _footer.Cost += item.Cost;              
       }
       this.Add(_footer);
     }
   }
   
   
   public partial class Form1 : Form
   {
     Item _item;
     ItemList _itemList;
     public Form1()
     {
       InitializeComponent();
       dgv.DataBindingComplete += dgv_DataBindingComplete;
       _itemList = new ItemList();
   
       SetSampleData();
     }
     private void SetSampleData()
     {
       _item = new ConcItem();
       _item.Name = "Book";
       _item.Cost = 250;
       _itemList.Add(_item);
   
       _item = new ConcItem();
       _item.Name = "Table";
       _item.Cost = 500;
       _itemList.Add(_item);
   
       _item = new ConcItem();
       _item.Name = "PC";
       _item.Cost = 700;
       _itemList.Add(_item);
   
       dgv.DataSource = null;
       _itemList.SetFooter();  //Add the footer item b4  data binding
       dgv.DataSource = _itemList;
     }
     void dgv_DataBindingComplete(object sender, DataGridViewBindingCompleteEventArgs e)
     {
       //If you want to do some formating on the footer row
       int rowIndex = dgv.Rows.GetLastRow(DataGridViewElementStates.Visible);
       if (rowIndex <= 0)
       {
         return;
       }
       dgv.Rows[rowIndex].DefaultCellStyle.BackColor = Color.Red;
       dgv.Rows[rowIndex].DefaultCellStyle.SelectionBackColor = Color.Red;        
       dgv.Rows[rowIndex].DefaultCellStyle.Font = new Font("Microsoft Sans Serif", 12f,    FontStyle.Bold);
     }
   }