[英]How To Access CommandParameter value from View Model
I have a Button in the view: 我在视图中有一个按钮:
<Button Grid.Row="0" Grid.Column="1" Content="Export to CSV "
HorizontalAlignment="Right" VerticalAlignment="Center"
Margin="2,2,20,2" Style="{StaticResource ExportButton}"
Command="{Binding ExportToExcelCommand}"
CommandParameter="{TelerikGrid}"
/>
Now I have the ExportCommand
in my ViewModel
as : 现在我在
ViewModel
有ExportCommand
:
private RelayCommand _exportToExcelCommand;
public ICommand ExportToExcelCommand
{
get
{
if (_exportToExcelCommand == default(RelayCommand))
{
_exportToExcelCommand = new RelayCommand(ExportToExcel, CanExport);
}
return _exportToExcelCommand;
}
}
private void ExportToExcel(Object param)
{
try
{
//ToDo: Update With Command Parameters
RadGridView gdv = new RadGridView();
using (Stream stream = dialog.OpenFile())
{
gdv.Export(Columns);
}
}
catch (FaultException ex)
{
var faultMessage = ex.Reason.GetMatchingTranslation().Text + "/n" + ex.StackTrace;
}
}
Now I am creating a new instance of RadGridView: 现在,我正在创建RadGridView的新实例:
RadGridView gdv = new RadGridView();
But instead I want to assign gdv
from the value that is passed as CommandParameter
from XAML 但是相反,我想从XAML作为
CommandParameter
传递的值分配gdv
RadGridView gdv = (RadGridView)param;
param
是您发送的对象,因此只需将其投射到其原点即可。
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