删除行的参数
我的删除参数有问题。我正在使用 GridView 和 ObjectDataSource。 我想删除一行。但是当我调试时,发现我的业务逻辑层中的 CustomerId 值始终为 0。
这是我的代码,
我有两个删除参数,Id
和 CustomerId
。这些名称与我的 BLL 中的名称相同。
<asp:GridView DataKeyNames="Id" ID="gvFavoriteMovies" DataSourceID="odsFavoriteMovies" AutoGenerateColumns="False"
runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="lblTitel" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Title")%>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="True" />
</Columns>
</asp:GridView>
<asp:ObjectDataSource ID="odsFavoriteFilm" runat="server"
TypeName="MovieMonstrDataLayer.bll.BLLMovies"
SelectMethod="GetFavoriteMoviesFromUser"
DeleteMethod="DeleteFavoriteMoviesFromUser"
onobjectcreating="odsFavoriteFilm_ObjectCreating"
ondeleting="odsFavoriteFilm_Deleting">
<DeleteParameters>
<asp:Parameter Name="Id" DbType="Int32" Direction="Input" />
<asp:Parameter Name="CustomerId" DbType="Int32" Direction="Input" />
</DeleteParameters>
<SelectParameters>
<asp:Parameter DbType="Int32" Direction="Input" Name="CustomerId" />
</SelectParameters>
</asp:ObjectDataSource>
这是在文件后面的代码中
,当删除一行时,我将登录客户的值分配给删除参数CustomerId
。这一切都有效。我为删除参数指定了正确的值。
protected void odsFavoriteFilm_Deleting(object sender, ObjectDataSourceMethodEventArgs e)
{
if (Context.User.Identity.IsAuthenticated)
{
this.odsFavoriteFilm.DeleteParameters["CustomerId"].DefaultValue = ((MovieMonstrIdentity)Context.User.Identity).Customer.Id.ToString();
this.odsFavoriteFilm.DataBind();
}
}
通常在我的业务逻辑层中,我现在应该得到正确的 CustomerId
,但我总是得到 0。虽然没有客户拥有该 ID。
public int DeleteFavoriteFilmFromUser(int Id, int CustomerId)
{
try
{
return Adapter.DeleteFavoriteFilmFromUser(Id, CustomerId);
}
catch (Exception ex)
{
throw ex;
}
}
我做错了什么?
I have a problem with my delete parameter. I am using a GridView and a ObjectDataSource.
And I would like to delete one row. But when I debug is see that the value of CustomerId is always 0 in my Business Logic Layer.
Here is my code
I have two delete parameters, Id
and CustomerId
. These are the same names as the ones in my BLL.
<asp:GridView DataKeyNames="Id" ID="gvFavoriteMovies" DataSourceID="odsFavoriteMovies" AutoGenerateColumns="False"
runat="server">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:Label ID="lblTitel" runat="server" Text='<%# DataBinder.Eval(Container.DataItem, "Title")%>'></asp:Label>
</ItemTemplate>
</asp:TemplateField>
<asp:CommandField ShowDeleteButton="True" />
</Columns>
</asp:GridView>
<asp:ObjectDataSource ID="odsFavoriteFilm" runat="server"
TypeName="MovieMonstrDataLayer.bll.BLLMovies"
SelectMethod="GetFavoriteMoviesFromUser"
DeleteMethod="DeleteFavoriteMoviesFromUser"
onobjectcreating="odsFavoriteFilm_ObjectCreating"
ondeleting="odsFavoriteFilm_Deleting">
<DeleteParameters>
<asp:Parameter Name="Id" DbType="Int32" Direction="Input" />
<asp:Parameter Name="CustomerId" DbType="Int32" Direction="Input" />
</DeleteParameters>
<SelectParameters>
<asp:Parameter DbType="Int32" Direction="Input" Name="CustomerId" />
</SelectParameters>
</asp:ObjectDataSource>
This is in the the code behind file
When deleting a row, I assign the value of the logged in Customer to the Delete Parameter CustomerId
. This all works. I give the right value to the delete parameter.
protected void odsFavoriteFilm_Deleting(object sender, ObjectDataSourceMethodEventArgs e)
{
if (Context.User.Identity.IsAuthenticated)
{
this.odsFavoriteFilm.DeleteParameters["CustomerId"].DefaultValue = ((MovieMonstrIdentity)Context.User.Identity).Customer.Id.ToString();
this.odsFavoriteFilm.DataBind();
}
}
Normally in my Business Logic Layer, I should get now the right CustomerId
, but I always get 0. While no Costumer has that ID.
public int DeleteFavoriteFilmFromUser(int Id, int CustomerId)
{
try
{
return Adapter.DeleteFavoriteFilmFromUser(Id, CustomerId);
}
catch (Exception ex)
{
throw ex;
}
}
What am I doing wrong?
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在您的
DataKeyNames
中包含CustomerID
可以在更新之前执行此操作
,也可以为命令设置实际参数值
Include
CustomerID
in yourDataKeyNames
Either do this before the updating
or set the actual parameter value for the command