下面以一个图书信息的简单项目演示如何使用 ReoGrid.Mvvm
. 完整代码见项目 ReoGrid.Mvvm.Demo
.
Install-Package ReoGrid.Mvvm
[WorksheetAttribute(Title = "Books")]
public class Book: IRecordModel
{
[ColumnHeader(Index = 10, IsVisible = false)]
public int Id { get; set; }
[ColumnHeader(Index = 20, Text = "Name", Width = 150)]
public string Title { get; set; }
[ColumnHeader(Index = 30)]
public string Author { get; set; }
[ColumnHeader(Index = 35, Text = "Type")]
public BindingType BindingType { get; set; }
[ColumnHeader(Index = 36, Text = "OnSale")]
public bool IsOnSale { get; set; }
[NumberFormat(DecimalPlaces = 2)]
[ColumnHeader(Index = 40)]
public decimal Price { get; set; }
[DateTimeFormat( CultureName = "en-US")]
[ColumnHeader(Index = 45, Text = "Publish Date", Width = 200)]
public DateTime Pubdate { get; set; }
public int RowIndex { get; set; }
}
(1) Model 必须实现IRecordModel
接口
IRecordModel
只有一个 RowIndex
属性, 你完全不用管这个属性,这是 ReoGrid.Mvvm
内部用到的。
(2) WorksheetAttribute
用来说明工作表的名字
可选,不指定该特性,那么就用Model类的类名作为工作表名称。
(3) ColumnHeader
特性中, 必须指定 Index
属性,其他的是可选的。
(4) DateTimeFormat
DateTimeFormat
目前不建议使用
ReoGrid
本身并没有完整实现这些特性。当然,也有可能我理解有误。
private ObservableCollection<IRecordModel> _Books;
private WorksheetModel _WorksheetModel;
_Books = new ObservableCollection<IRecordModel>();
for (int i = 0; i < 10; i++)
{
Book book = new Book();
book.Id = i;
book.Title = string.Format("Title {0}", i);
book.Author = string.Format("Author {0}", i);
book.BindingType = BindingType.Hardback;
book.IsOnSale = true;
book.Price = (decimal)(i * 10.1);
book.Pubdate = DateTime.Now;
_Books.Add(book);
}
// 变量 reoGridControl 是 ReoGridControl 的控件元素实例
_WorksheetModel = new WorksheetModel(reoGridControl, typeof(Book), _Books);
//如果需要在输入值前检查变量的有效性,那么就实现该函数
_WorksheetModel.OnBeforeChangeRecord += OnBeforeChangeRecord;
private bool? OnBeforeChangeRecord(IRecordModel record, PropertyInfo propertyInfo, object newProperyValue)
{
if (propertyInfo.Name.Equals("Price"))
{
decimal price = Convert.ToDecimal(newProperyValue);
if (price > 100m) //假设最大价格是100
{
MessageBox.Show("最大价格是 100, 请重新输入!.", "Alert",
MessageBoxButton.OK, MessageBoxImage.Warning);
return true; // 返回 true 则取消本次输入
}
}
return null;
}
// 增加一条书目信息
int count = _Books.Count;
Book book = new Book();
book.Id = count;
book.Title = string.Format("Title {0}", count);
book.Author = string.Format("Author {0}", count);
book.BindingType = BindingType.Hardback;
book.IsOnSale = true;
book.Price = (decimal)(count * 10.11) > 100m ? 100m :(decimal)(count * 10.11);
book.Pubdate = DateTime.Now;
_Books.Add(book);
// 移除一条书目信息
if (_Books.Count > 0)
{
_Books.RemoveAt(_Books.Count - 1);
}
// 移动一条书目信息
if (_Books.Count > 2)
{
_Books.Move(0, _Books.Count - 1);
}
// 编辑一条书目信息
(_Books[0] as Book).Price = new Random(DateTime.Now.Millisecond).Next(1,100);
// 编辑完 模型(Model) 之后要调用 UpadteRecord 函数将模型(Model)的变化同步到视图(View)中
_WorksheetModel.UpadteRecord(_Books[0]);