DataGridView的列尾C＃.NET的WinForms [英] DataGridView column footer c#.net winforms

问题描述

有没有办法添加一列页脚在 datagridview的这不是数据绑定？我使用它来拍摄用户的输入添加库存。目前我使用一个标签来显示总，但我想改变它，如果可能的页脚。

Is there a way to add a column footer in a datagridview which is not databound? I am using it to take user input for adding inventory. Currently I am using a label to display the total, but I want to change it to footer if possible.

推荐答案

我遇到了同样的问题，previously，我意识到一个漫长的寻找之后;

I ran into the same problem previously and after a long search I realised;

1. Winform的DataGridView的不支持添加脚注吧。

1. Winform Datagridview do not support adding footer to it.

我想补充说，可以容纳摘要一个额外的行，但仍然没有工作了罚款。

I tried adding an extra row that could hold the summary but still did not work out fine.

您可以创建一个用户控件有两个网格，并与下部格栅保持了总结。

You can create a user control that has two grids and with the lower grid holding the summary.

Solution--

Solution--

我的解决方案，它使用的数据绑定。（1）-I创建一个抽象对象的项目与（名称，成本）的特性。（2）-1创建一个具体的项目，即<强> ConcItem 继承项目（3）-I创建一个页脚项目即 FooterItem 也继承了项目（4）-A集合中的项目，即ITEMLIST你实例页脚项目。（5）最后，你做的数据绑定调用，增加页脚项目的方法之前。

1. My solution that used data binding.(1)-I Create an abstract object Item with (Name, Cost) properties.(2)-I Create a Concrete item i.e ConcItem that inherit Item(3)-I create a footer item i.e FooterItem that also inherits Item(4)-A collection of Items i.e ItemList where you instantiate the footer item.(5) Finally, just before you do data binding call the method that adds the footer item.

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);
  }
}

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