这是我试图将数据网格绑定到的代码:
var query = (from s in entity.Sources
where s.CorporationId == corporationId
select new SourceItem
{
CorporationId = s.CorporationId,
Description=s.Description,
IsActive = s.IsActive,
Name=s.Name,
SourceId=s.SourceId,
TokenId=s.TokenId
});
var x = new ObservableCollection<Source>(query);
这是我的SourceItetm类:
private void SourceDataGrid_AddingNewItem(object sender, System.Windows.Controls.AddingNewItemEventArgs e)
{
var sources = new Source();
sources.CorporationId = _corporationId;
sources.Description = string.Empty;
sources.IsActive = true;
sources.Name = string.Empty;
sources.SourceId = Guid.NewGuid();
sources.TokenId = Guid.NewGuid();
e.NewItem = sources;
}
public class SourceItem
{
private Guid _corporationId1;
private string _description;
private bool _isActive;
private string _name;
private Guid _sourceId;
private Guid _tokenId;
public Guid CorporationId
{
set
{
_corporationId1 = value;
onPropertyChanged(this, "CorporationId");
}
get { return _corporationId1; }
}
public string Description
{
set
{
_description = value;
onPropertyChanged(this, "Description");
}
get { return _description; }
}
public bool IsActive
{
set
{
_isActive = value;
onPropertyChanged(this, "IsActive");
}
get { return _isActive; }
}
public string Name
{
set
{
_name = value;
onPropertyChanged(this, "NAme");
}
get { return _name; }
}
public Guid SourceId
{
set
{
_sourceId = value;
onPropertyChanged(this, "SourceId");
}
get { return _sourceId; }
}
public Guid TokenId
{
set
{
_tokenId = value;
onPropertyChanged(this, "TokenId");
}
get { return _tokenId; }
}
// Declare the PropertyChanged event
public event PropertyChangedEventHandler PropertyChanged;
// OnPropertyChanged will raise the PropertyChanged event passing the
// source property that is being updated.
private void onPropertyChanged(object sender, string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(sender, new PropertyChangedEventArgs(propertyName));
}
}
}
}
我在绑定正确时遇到问题。此行特别是:
var x = new ObservableCollection<Source>(query);
它告诉我它无法解析构造函数。
我在执行约束力吗?
参考方案
您选择的类型是SourceItem
,因此您应该使用:
new ObservableCollection<SourceItem>(query.ToList());
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