用对象列表填充 datagridview [英] populating datagridview with list of objects

问题描述

我有一个包含一系列交易对象的列表.我想要做的是在加载表单时在 Datagridview 控件中显示这些事务对象，基本上 Datagridview 应该代表事务寄存器的某些内容，以显示列表中每个事务对象的数据.

I have a List that contains a series of transaction objects. What I'm trying to do is to display these transaction objects in a Datagridview control on loading a form, basically the Datagridview should represent something of a transaction register to display the data for each of the transaction objects in the list.

我必须承认我在使用 Datagridviews 方面缺乏经验，并且在理解我需要在这里做什么方面遇到了一些困难.

I must admit to a lack of experience when it comes to using Datagridviews and I'm having some difficulty with understanding what I need to do here.

我的问题是，如何获取列表中每个对象的详细信息以显示在 Datagridview 中?

My question is, how do I go about getting the details of each of the objects in the list to display in the Datagridview?

这是我的代码.

首先是事务类:

public class Transaction
{
    // Class properties
    private decimal amount;
    private string type;
    private decimal balance;
    private string date;
    private string transNum;
    private string description;

    // Constructor to create transaction object with values set.
    public Transaction(decimal amount, string type, decimal currBal, string date, string num, string descrip)
    {
        this.amount = amount;
        this.type = type;
        this.balance = currBal;
        this.date = date;
        this.transNum = num;
        this.description = descrip;
    }

    // Get and Set accessors to allow manipulation of values.
    public decimal Amount
    {
        get
        {
            return amount;
        }
        set
        {
            amount = value;
        }
    }
    public string Type
    {
        get
        {
            return type;
        }
        set
        {
            type = value;
        }
    }
    public decimal Balance
    {
        get
        {
            return balance;
        }
        set
        {
            balance = value;
        }
    }
    public string Date
    {
        get
        {
            return date;
        }
        set
        {
            date = value;
        }
    }
    public string TransNum
    {
        get
        {
            return transNum;
        }
        set
        {
            transNum = value;
        }
    }
    public string Description
    {
        get
        {
            return description;
        }
        set
        {
            description = value;
        }
    }

    public decimal addCredit(decimal balance, decimal credit)
    {
        decimal newBalance;
        newBalance = balance + credit;
        return newBalance;
    }

    public decimal subtractDebit(decimal balance, decimal debit)
    {
        decimal newBalance;
        newBalance = balance - debit;
        return newBalance;
    }
    }
}

现在是注册"的代码.形式:

Now the code for the "Register" form:

    public partial class Register : Form
{
    List<Transaction> tranList = new List<Transaction>();

    public Register(List<Transaction> List)
    {
        InitializeComponent();
        this.tranList = List;
    }

    private void Register_Load(object sender, System.EventArgs e)
    {
        //regView represents the Datagridview that I'm trying to work with
        regView.AutoSize = true;
        regView.DataSource = tranList;
        regView.Rows.Add(tranList[0]);
    }
}

这是我得到的输出.

推荐答案

实际上有两种高级方法可以解决这个问题.

There's really two high level approaches to this.

1) 将手动创建的行直接添加到 DataGridView.在这种情况下，您必须在情况发生变化时手动更新/删除它们.如果您在初始化后不打算更改/更改显示内容，则此方法可以".如果你这样做，它就会变得站不住脚.

1) Add the manually created rows directly to the DataGridView. In this case, you have to manually update/remove them as things change. This approach is "ok" if you don't intend to alter/change the content of the display after you initialize it. It becomes untenable if you do.

要直接添加它，您需要创建一个DataGridViewRow，并用各个值填充它，然后将DataGridViewRow 添加到DataGridView.Rows.

To add it directly, you need to create a DataGridViewRow, and populate it with the individual values, and then add the DataGridViewRow to the DataGridView.Rows.

2) 数据绑定 DGV.有很多关于数据绑定到 DataGridView 的文章.在某些情况下，将数据添加到 DataTable，然后从中提取 DataView，并将 DataGridView 绑定到数据视图.其他人发现直接绑定到集合更容易.

2) Data bind the DGV. There's many articles about databinding to a DataGridView. In some cases, it's easier to just add your data to a DataTable, and then extract a DataView from that, and bind the DataGridView to the DataView. Other people find it easier to directly bind to a collection.

CodeProject 有一篇不错的文章可以帮助您开始这条道路，但在 Google 上快速搜索会产生许多其他文章.

CodeProject has a decent article to get you started down that path, but a quick Google search will yield many other articles.

http://www.codeproject.com/Articles/24656/A-详细数据绑定教程

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