C# 用对象列表填充 datagridview

populating datagridview with list of objects

提问by morris295

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 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.

我必须承认在使用 Datagridviews 时缺乏经验，而且我在理解我需要在这里做什么时遇到了一些困难。

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

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？

Here is my code.

这是我的代码。

First the transaction class:

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;
    }
    }
}

Now the code for the "Register" form:

现在“注册”表单的代码：

    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]);
    }
}

And here's the output I get.

这是我得到的输出。

采纳答案by Gjeltema

There's really two high level approaches to this.

对此，确实有两种高级方法。

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.

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。

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

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 添加DataGridViewRow到DataGridView.Rows.

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 DataViewfrom that, and bind the DataGridViewto the DataView. Other people find it easier to directly bind to a collection.

2) 数据绑定DGV。有很多关于数据绑定到DataGridView. 在某些情况下，只需将数据添加到 a 中DataTable，然后从中提取 a DataView，然后将 绑定DataGridView到DataView. 其他人发现直接绑定到集合更容易。

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

CodeProject 有一篇不错的文章可以帮助您走上这条道路，但是在 Google 上快速搜索会产生许多其他文章。

http://www.codeproject.com/Articles/24656/A-Detailed-Data-Binding-Tutorial

http://www.codeproject.com/Articles/24656/A-Detailed-Data-Binding-Tutorial

回答by Onder Ezdi

use as DGV:

用作 DGV：

DataGridView groupListDataGridView;

column:

柱子：

DataGridViewTextBoxColumn groupListNameColumn;

column setup should be like this:

列设置应如下所示：

groupListNameColumn.DataPropertyName = "name";

use this property, else all columns will be added.

使用此属性，否则将添加所有列。

groupListDataGridView.AutoGenerateColumns = false;

populate like this:

像这样填充：

private void populateGroupList() {
    groupListDataGridView.DataSource = null;
    formattedGroupList = new SortableBindingList<DataGridGroupObject>();
    foreach (GroupObject go in StartUp.GroupList) {
        DataGridGroupObject dggo = new DataGridGroupObject();
        dggo.id = go.Id;
        dggo.name = go.Name;
        formattedGroupList.Add(dggo);
    }
    groupListDataGridView.DataSource = formattedGroupList;
    groupListDataGridView.Invalidate();
}

and model:

和型号：

public class DataGridGroupObject
{
    public int id { get; set; }      //this will be match id column
    public string name { get; set; } // this will be match name column
}