使用对象列表填充datagridview [英] populating datagridview with list of objects
问题描述
在使用Datagridviews时，我必须承认缺乏经验，而且我在理解我需要做的工作方面遇到困难。
我的问题是，如何获取列表中每个对象的细节显示在Datagridview？
这是我的代码
首先是事务类：
public class Transaction
{
//类属性
私有十进制数;
私有字符串类型;
私有十进制余额;
私人字符串日期;
private string transNum;
私人字符串描述;
//构造器创建值设置的事务对象。
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;
}
//获取和设置访问器以允许操纵值。
public decimal金额
{
get
{
return amount;
}
设置
{
amount = value;
}
}
public string Type
{
get
{
return type;
}
set
{
type = value;
}
}
公共小数余额
{
获取
{
返回余额;
}
set
{
balance = value;
}
}
public string Date
{
get
{
return date;
}
set
{
date = value;
}
}
public string TransNum
{
get
{
return transNum;
}
set
{
transNum = value;
}
}
public string描述
{
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 =余额 - 借记;
return newBalance;
}
}
}
现在的代码为注册表单：
public partial class注册：Form
{
列表< Transaction> tranList = new List< Transaction>（）;
public注册（List< Transaction> List）
{
InitializeComponent（）;
this.tranList = List;
}
private void Register_Load（object sender，System.EventArgs e）
{
// regView表示我正在尝试使用$ b的Datagridview $ b regView.AutoSize = true;
regView.DataSource = tranList;
regView.Rows.Add（tranList [0]）;
}
}
这里是我得到的输出。
真的有两个高级的方法。
1）将手动创建的行直接添加到 DataGridView 。在这种情况下，您必须手动更新/删除它们，因为事情发生了变化。如果您不想在初始化之后更改/更改显示内容，则此方法为确定。
要直接添加，您需要创建一个 DataGridViewRow 并填充它使用各个值，然后将 DataGridViewRow 添加到 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，只需将数据添加到 DataTable 中，然后从中提取 DataView 更容易，将 DataGridView 绑定到 DataView 。其他人更容易直接绑定到一个集合。
CodeProject有一个体面的文章，让你开始走下去，但是一个快速的Google搜索将会产生许多其他文章。
http://www.codeproject.com/Articles/24656/A-Detailed-Data-Binding-Tutorial
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.
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.
My question is, how do I go about getting the details of each of the objects in the list to display in the Datagridview?
Here is my code.
First the transaction class:
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:
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.
There's really two high level approaches to this.
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.
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) 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 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-Detailed-Data-Binding-Tutorial
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