WPF开发中自定义DataGrid样式

实际开发中难免需要自己重写GataGrid样式，以下是我写的一个新样式：

1.view界面样式如下：

<Window.Resources>

</Window.Resources>

<Grid.RowDefinitions>


</Grid.RowDefinitions>

<i:Interaction.Behaviors>
<be:SelectedItemsBehavior BindableSelectedItems="{Binding SelectedItems,Mode=OneWayToSource}"/>
</i:Interaction.Behaviors>
<DataGrid.Columns>

<DataGridTextColumn.HeaderTemplate>



</DataGridTextColumn.HeaderTemplate>


<DataGridTextColumn.HeaderTemplate>



</DataGridTextColumn.HeaderTemplate>


<DataGridTextColumn.HeaderTemplate>



</DataGridTextColumn.HeaderTemplate>

</DataGrid.Columns>

2.后台ViewModel类DataGridViewModel如下：

public partial class DataGridViewModel :ObservableObject
{

public List employees;

[ObservableProperty]
ICollectionView collectionView;

[ObservableProperty]
string queryKeyword;

[ObservableProperty]
IList selectedItems;

partial void OnQueryKeywordChanged(string value) => CollectionView.Refresh();

public DataGridViewModel()
{
IEnumerable employees =EmployeeModel.FakeMany(5);
this.employees = new List(employees);
CollectionView = CollectionViewSource.GetDefaultView(this.employees);
CollectionView.Filter = (item) =>
{
if (string.IsNullOrEmpty(QueryKeyword)) return true ;
var em = item as EmployeeModel;
return em.Name.Contains(QueryKeyword,StringComparison.OrdinalIgnoreCase);
};
}

[RelayCommand]
public void Add()
{
employees.Add(EmployeeModel.FakeOne());
CollectionView.Refresh();
}

//[RelayCommand]
//public void CalculateSumSalary(IList employ)
//{
// var sum = employ.Cast().Sum(x => ((EmployeeModel)x).Salary);
//}

[RelayCommand]
public void CalculateSumSalary()
{
if (SelectedItems != null)
{
var sum = SelectedItems.Cast().Sum(x => ((EmployeeModel)x).Salary);
}

foreach (var item in employees)
{
item.IsSelected = item.Salary > 15000;
}
collectionView.Refresh();
}

}

3.效果图如下:

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