在ASP.NET中的GridView的ObjectDataSource控件的删除和插入的方法问题 [英] Problems with Delete and Insert methods of a GridView's ObjectDataSource in ASP.NET

问题描述

我想用一个ObjectDataSource在ASP.NET的GridView。显示在GridView作品中的数据。现在我一个CommandField添加到GridView也使编辑数据。 update方法工作正常，但我有删除和插入的问题：

I want to use an ObjectDataSource with a GridView in ASP.NET. Displaying the data in the GridView works. Now I add a CommandField to the GridView to also enable editing the data. The Update Method works fine, but I have Problems with deleting and inserting:

1. 当我点击GridView中删除链接，配置DeleteMethod被调用，但是用错的 testSystemEndpoint 的参数。相反，应删除的业务对象，它与各个领域是'空'裸实例。因此，配置DeleteMethod不能删除的条目。


2. 当我点击GridView中没有插入链接后会发生。配置的InsertMethod不叫。

1. When I click the Delete link in the GridView, the configured DeleteMethod is called, but with the wrong testSystemEndpoint parameter. Instead of the business object that should be deleted, it is a bare instance with all fields being 'null'. Therefore the configured DeleteMethod cannot delete the entry.
2. When I click the Insert link in the GridView nothing happens. The configured InsertMethod is not called.

我的ObjectDataSource是这样的：

My ObjectDataSource looks like this:

<asp:ObjectDataSource ID="ObjectDataSource1" runat="server"
        DataObjectTypeName="[...].TSEndpoint" 
        DeleteMethod="Remove" InsertMethod="Add" 
        OldValuesParameterFormatString="original_{0}" SelectMethod="GetTSEndpoints" 
        TypeName="[...].TSRepository" 
        UpdateMethod="Update"></asp:ObjectDataSource>

我的经理BusinessObject的是TSRepository.cs：

My BusinessObject Manager is TSRepository.cs:

[DataObject]
public class TSRepository : ITSRepository
{
    private ISessionFactory _sessionFactory;
    private Configuration _configuration;

    public TSRepository()
    {
        _configuration = new Configuration();
        _configuration.Configure();
        _configuration.AddAssembly(typeof(TSEndpoint).Assembly);
        _sessionFactory = _configuration.BuildSessionFactory();
    }

    [DataObjectMethod(DataObjectMethodType.Insert)]
    public void Add(TSEndpoint testSystemEndpoint)
    {
        if (testSystemEndpoint != null)
        {
            using (ISession session = NHibernateHelper.OpenSession())
            using (ITransaction transaction = session.BeginTransaction())
            {
                session.Save(testSystemEndpoint);
                transaction.Commit();
            }
        }
    }

    [DataObjectMethod(DataObjectMethodType.Update)]
    public void Update(TSEndpoint testSystemEndpoint)
    {
        using (ISession session = NHibernateHelper.OpenSession())
        using (ITransaction transaction = session.BeginTransaction())
        {
            session.Update(testSystemEndpoint);
            transaction.Commit();
        }
    }

    [DataObjectMethod(DataObjectMethodType.Delete)]
    public void Remove(TSEndpoint testSystemEndpoint)
    {
        using (ISession session = NHibernateHelper.OpenSession())
        using (ITransaction transaction = session.BeginTransaction())
        {
            session.Delete(testSystemEndpoint);
            transaction.Commit();
        }
    }

    [DataObjectMethod(DataObjectMethodType.Select)]
    public ICollection<TSEndpoint> GetTSEndpoints()
    {
        using (ISession session = NHibernateHelper.OpenSession())
        {
            var testSystems = session
                .CreateCriteria(typeof(TSEndpoint))                    
                .List<TSEndpoint>();
            return testSystems;
        }
    }
}

我将非常高兴，如果有人可以帮助我与我的两个问题。

I would be very glad if someone could help me with my two problems.

推荐答案

有关问题1，我花了相当多的时间在我自己的code追查一个非常类似的问题。

For question 1, I spent the quite a bit of time tracking down a very similar problem in my own code.

对于我来说，解决办法是在GridView的DataKeyNames属性设置为我的对象的主键列名。一旦我这样做，一切都非常完美。

For me, the solution was to set the DataKeyNames property in the gridview to the column name of the Primary Key for my object. Once I did this, everything worked perfectly.

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