wpf：DataGrid使用

xmlns:i="clr-namespace:System.Windows.Interactivity;assembly=System.Windows.Interactivity"
xmlns:WpfToolkit="clr-namespace:Microsoft.Windows.Controls;assembly=WPFToolkit"

1. WpfToolkit:DataGrid在TableView.xaml中定义如下

<WpfToolkit:DataGrid  x:Name="PlotViewDataGrid"
ItemsSource="{Binding DataGridSource, Mode=TwoWay}"  IsReadOnly="True"  SelectedItem="{Binding DataGridSelected}"
AutoGenerateColumns="True"   AutoGeneratedColumns="PlotViewDataGrid_AutoGeneratedColumns"
Width="685"    RowHeight="25"  Margin="0"  CanUserResizeRows="True"  SelectionMode="Single"
SelectedIndex="{Binding DataGridSelectedIndex, Mode=TwoWay}"  Grid.Row="0">
<i:Interaction.Triggers>
<i:EventTrigger EventName="SelectionChanged">
<i:InvokeCommandAction Command="{Binding GetSelectCommand}"
CommandParameter="{Binding SelectedItem,ElementName=PlotViewDataGrid}" />
</i:EventTrigger>
<i:EventTrigger EventName="MouseDoubleClick">
<i:InvokeCommandAction Command="{Binding DataGridDoubleClickCommand}"
CommandParameter="{Binding SelectedItem,ElementName=PlotViewDataGrid}" />
</i:EventTrigger>
</i:Interaction.Triggers>
<WpfToolkit:DataGrid.RowStyle>
<Style TargetType="{x:Type WpfToolkit:DataGridRow}">
<Setter Property="Background" Value="Red" />
</Style>
</WpfToolkit:DataGrid.RowStyle>
</WpfToolkit:DataGrid>

1.在TableView.xmal.cs文件中PlotViewDataGrid_AutoGeneratedColumns函数可以改变列宽

private void PlotViewDataGrid_AutoGeneratedColumns(object sender, EventArgs e) {

double dgwidth = this.PlotViewDataGrid.Width;

int columnWidth = this.PlotViewDataGrid.Columns.Count;

this.PlotViewDataGrid.HorizontalContentAlignment = (HorizontalAlignment)1;

for (int i = 0; i < this.PlotViewDataGrid.Columns.Count; i++)

{

this.PlotViewDataGrid.Columns[i].Width = new Microsoft.Windows.Controls.DataGridLength(dgwidth / columnWidth);

}

}

2.在TableViewModel.cs文件中

#region DataGridDoubleClickCommand
RelayCommand<object> dataGridDoubleClickCommand = null;
public ICommand DataGridDoubleClickCommand
{
get
{
if (dataGridDoubleClickCommand == null)
{
dataGridDoubleClickCommand = new RelayCommand<object>((p) => OnDataGridDoubleClickCommand(p), (p) => CanDataGridDoubleClickCommand(p));
}

return dataGridDoubleClickCommand;
}
}

private bool CanDataGridDoubleClickCommand(object p)
{
return true;
}

private void OnDataGridDoubleClickCommand(object p)
{
DataGridDoubleClickHandle(p);
}
#endregion

3.DataGrid风格自定义
<WpfToolkit:DataGrid.RowStyle>
<Style TargetType="{x:Type WpfToolkit:DataGridRow}">
<Setter Property="Background" Value="Red" />
</Style>
</WpfToolkit:DataGrid.RowStyle>

4.CanUserResizeRows="True"允许用户调整行高

其他参考内容如下：

（1）自动生成列

<DataGrid AutoGenerateColumns="True" Name="datagrid" CanUserAddRows="False" MouseDoubleClick="datagrid_MouseDoubleClick"/>
2）取消自动生成列，手动绑定到相应字段

<DataGrid AutoGenerateColumns="False" Name="datagrid" CanUserAddRows="False" MouseDoubleClick="datagrid_MouseDoubleClick">

<DataGrid.Columns>

<DataGridTextColumn Header="编号" Binding="{Binding ID}"></DataGridTextColumn>

<DataGridTextColumn Header="公司" Binding="{Binding CompanyName}"></DataGridTextColumn>

<DataGridTextColumn Header="固定资产" Binding="{Binding FixedAssets}" Width ="*"></DataGridTextColumn>

</DataGrid.Columns>

</DataGrid>
最后一列设置Width ="*"是为了取消空白列。

（3）后台代码

privatevoid Window_Loaded(object sender, RoutedEventArgs e)

{

datagrid.ItemsSource = AccessDAL.OleDbHelper.ExecuteDataTable("SELECT * from Customers").DefaultView;

}

//双击DataGrid，显示相应信息
privatevoid datagrid_MouseDoubleClick(object sender, MouseButtonEventArgs e)

{

DataRowView row = datagrid.SelectedItem as DataRowView;

MessageBox.Show(row["id"].ToString());

}

//如果绑定到对象集合，如ObservableCollection<Employee>，代码如下：

ObservableCollection<Employee> col;

public EmployeeManage()

{

InitializeComponent();

col =new ObservableCollection<Employee>();

col.Add(new Employee() { Id =1, Name ="Jim", Salary =2500.50f });

col.Add(new Employee() { Id =2, Name ="John", Salary =2600.50f });

datagrid.ItemsSource = col;

}

privatevoid datagrid_MouseDoubleClick(object sender, MouseButtonEventArgs e)

{

Employee emp=datagrid.SelectedItem as Employee;

MessageBox.Show(emp.Id.ToString());

}
（4）删除选中的多行数据

privatevoid Delete_Click(object sender, RoutedEventArgs e)

{

for (int i = datagrid.SelectedItems.Count -1; i >=0; i--)

{

Good good = datagrid.SelectedItems[i] as Good;

goods.Remove(good);

}

}