MapResource对象转换问题

发布于 2024-11-27 02:08:42 字数 1147 浏览 6 评论 0原文

我的 MapResourceManager 中有一个名为“MapResourceItem0”的“ArcGIS Server Internet”资源，它是其他两个资源中的第三个。

我需要获取此资源中图层的功能，但无法获取 MapResource 对象

此方法

IMapResource mapresource = mapresourcemanager1.GetResource(2);
        ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource graphics_mapresource =
            (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource)mapresource;

和此方法

 ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource graphicsresource = null;
        foreach (IGISFunctionality gisfunctionality in map1.GetFunctionalities())
        {

            if (gisfunctionality.Resource.Name == "MapResourceItem0")
            {

                graphicsresource = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource)
                    gisfunctionality.Resource;

            }
        }

都失败，并出现以下错误

System.InvalidCastException: Cannot cast an object from 'ESRI.ArcGIS. ADF.Web.DataSources.ArcGISServer.MapResourceInternet' 到 'ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource'。

我不明白，示例和文档清楚地表明这是可以接受的，这有什么问题吗？我正在使用 arcgis 服务器 10

原文

I have an 'ArcGIS Server Internet' resource into my MapResourceManager called "MapResourceItem0" and is the third of other two resources.

I need to get the features of the layers in this resource, but I can't obtain the MapResource object

Either this method

IMapResource mapresource = mapresourcemanager1.GetResource(2);
        ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource graphics_mapresource =
            (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource)mapresource;

and this

 ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource graphicsresource = null;
        foreach (IGISFunctionality gisfunctionality in map1.GetFunctionalities())
        {

            if (gisfunctionality.Resource.Name == "MapResourceItem0")
            {

                graphicsresource = (ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource)
                    gisfunctionality.Resource;

            }
        }

are failing with the following error

System.InvalidCastException: Cannot cast an object from 'ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet' to 'ESRI.ArcGIS.ADF.Web.DataSources.Graphics.MapResource'.

I don't understand, examples and documentation clearly states this is acceptable, what's wrong with that? I'm using arcgis server 10

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掐死时间 2024-12-04 02:08:42

我（幸运的是）没有安装 Web ADF。无法将 ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet 转换为需要服务器上下文的任何内容。

但 ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet 实现 IMapResource 所以也许你可以这样做：

IMapResource mapresource = mapresourcemanager1.GetResource(2);
ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet graphics_mapresource =
    (ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet)mapresource;

I (luckily) do not have the web ADF installed. It is not possible to cast a ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet to anything that needs the server context.

But ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet implements IMapResource so maybe you can do:

IMapResource mapresource = mapresourcemanager1.GetResource(2);
ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet graphics_mapresource =
    (ESRI.ArcGIS.ADF.Web.DataSources.ArcGISServer.MapResourceInternet)mapresource;

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