访问资源集合项时的ArgumentOutOfRangeException

Where can I create this object in the asp.net lifecycle methods without receiving an out of range exception. Right now the only place that I can actually get a resource collection containing values is in onreasourcefetched method for webschedule info. But I need to do this before webscheduleinfo is created and it's views are populated with users.

我在哪里可以在asp.net生命周期方法中创建此对象，而不会收到超出范围的异常。现在，我实际上可以获得包含值的资源集合的唯一地方是用于webschedule信息的onreasourcefetched方法。但是我需要在创建webscheduleinfo之前执行此操作，并且用户填充其视图。

protected void Page_Init(object sender, EventArgs e)
        {
            ResourcesCollection resources = WebScheduleInfo1.VisibleResources;

            int count = resources.Count;
            Resource obje = (Resource)resources.GetItem(1);
            string name = obje.Name;
            resources.Clear();
            resources.Add(obje);
            this.WebScheduleInfo1.ActiveResourceName = name;
        }

1 个解决方案

#1

You are getting a count of resources but you are not checking to make sure that count is greater than 0.

您获得了一些资源，但您没有检查以确保计数大于0。

(Resource)resources.GetItem(1) will fail unless the resources collection has at least 2 items in it.

（资源）resources.GetItem（1）将失败，除非资源集合中至少有2个项目。

The collection is 0 based, so if you want the first item do something like this:

该集合基于0，所以如果你想要第一个项目做这样的事情：

protected void Page_Init(object sender, EventArgs e)
{
    ResourcesCollection resources = WebScheduleInfo1.VisibleResources;

    int count = resources.Count;

    if( count > 0 )
    {
        Resource obje = (Resource)resources.GetItem(0);
        string name = obje.Name;
        resources.Clear();
        resources.Add(obje);
        this.WebScheduleInfo1.ActiveResourceName = name;
    }
}

#1