避免使用.NET进行ArcObjects地理处理失败？

我们可以使用ArcToolbox中的一些不错的功能，但是由于某些原因，它无法正常工作。它甚至都没有抛出错误。

我的软件在ArcMap中运行，所以不需要再次进行AoInitialize了吗？

    public void Execute()
    {
        InitializeProduct();
        try
        {
            Geoprocessor gp = new Geoprocessor();
            gp.OverwriteOutput = true;

            FeatureToPoint featureToPoint = new FeatureToPoint();

            string outputPathName = CurrentWorkspace.PathName + "\\teste_centroide";

            featureToPoint.in_features = InputFeatureClass;
            featureToPoint.out_feature_class = outputPathName;
            featureToPoint.point_location = "INSIDE";

            IGeoProcessorResult result = (IGeoProcessorResult)gp.Execute(featureToPoint, null);

            if (result == null)
            {
                for (int i = 0; i <= gp.MessageCount - 1; i++)
                {
                    Console.WriteLine(gp.GetMessage(i));
                }
            }

            IGPUtilities gpUtils = new GPUtilitiesClass();
            this.OutputFeatureClass = gpUtils.OpenFeatureClassFromString(outputPathName);
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.Message + "\r\n");
        }

这是我在这里的代码示例。我生成了DataManagement工具程序集，但找不到用于对其签名的文件。

这段代码给我一个错误。是因为签字吗？

我也尝试了另一种方法，使用IVariantArray并从工具名称调用而没有成功。是我还是...？

谁能为我指出“更精细”的解决方案？我需要运行一些我实际上不想重复的，已经在ArcToolbox中构建的过程。

在下面的代码中，multi2single函数在10.0中对我有用。我没有ArcInfo许可证，因此无法测试Feature2Point，可以吗？

public class Test
{
    public static void TestGP(IApplication app)
    {
        IMxDocument mxDoc = (IMxDocument)app.Document;
        //Feat2Point((IFeatureLayer)mxDoc.FocusMap.get_Layer(0), @"D:\Projects\AmberGIS\Forums\forumtest.gdb\f2p");
        Multi2Single((IFeatureLayer)mxDoc.FocusMap.get_Layer(0), @"D:\Projects\AmberGIS\Forums\forumtest.gdb\m2s");
    }

    public static void Multi2Single(IFeatureLayer inLayer, string outPath)
    {
        MultipartToSinglepart m2s = new MultipartToSinglepart();
        m2s.in_features = inLayer.FeatureClass;
        m2s.out_feature_class = outPath;
        Execute(m2s);
    }

    public static void Feat2Point(IFeatureLayer inLayer, string outPath)
    {
        FeatureToPoint f2p = new FeatureToPoint();
        f2p.in_features = inLayer.FeatureClass;
        f2p.out_feature_class = outPath;
        Execute(f2p);
    }

    public static void Execute(IGPProcess proc)
    {
        Geoprocessor gp = new Geoprocessor();
        gp.AddOutputsToMap = true;
        gp.OverwriteOutput = true;
        gp.RegisterGeoProcessorEvents((IGeoProcessorEvents)new GPEvents());
        IGeoProcessorResult2 result = gp.Execute(proc, null) as IGeoProcessorResult2;
        IGPMessages msgs = result.GetResultMessages();
        for(int i=0;i<msgs.Count;i++)
            Debug.Print("{0} {1}", msgs.GetMessage(i).Description, msgs.GetMessage(i).Type);            
    }
}
public class GPEvents : IGeoProcessorEvents3, IGeoProcessorEvents 
{
    #region IGeoProcessorEvents3 Members
    public void OnProcessMessages(IGeoProcessorResult result, IGPMessages pMsgs)
    {
        Debug.Print("OnProcessMessages {0}", result.Status);
    }
    public void OnProgressMessage(IGeoProcessorResult result, string message)
    {
        Debug.Print("OnProgressMessages {0}", result.Status);
    }
    public void OnProgressPercentage(IGeoProcessorResult result, double percentage)
    {
        Debug.Print("OnProgressPercentage {0}", result.Status);
    }
    public void OnProgressShow(IGeoProcessorResult result, bool Show)
    {
        Debug.Print("OnProgressShow {0}", result.Status);
    }
    public void PostToolExecute(IGeoProcessorResult result)
    {
        Debug.Print("PostToolExecute {0}", result.Status);
    }
    public void PreToolExecute(IGeoProcessorResult result)
    {
        Debug.Print("PreToolExecute {0}",result.Status);
    }
    #endregion

    #region IGeoProcessorEvents Members

    void IGeoProcessorEvents.OnMessageAdded(IGPMessage message)
    {
        Debug.Print("OnMessageAdded {0} {1}", message.Description, message.Type);
        throw new NotImplementedException();
    }

    void IGeoProcessorEvents.PostToolExecute(IGPTool Tool, ESRI.ArcGIS.esriSystem.IArray Values, int result, IGPMessages Messages)
    {
        Debug.Print("PostToolExecute2 {0}", Tool.Name);
    }

    void IGeoProcessorEvents.PreToolExecute(IGPTool Tool, ESRI.ArcGIS.esriSystem.IArray Values, int processID)
    {
        if (Tool.IsLicensed())
            Debug.Print("PreToolExecute");
        else
            Debug.Print("tool is not licensed to run");
    }

    void IGeoProcessorEvents.ToolboxChange()
    {
        Debug.Print("ToolboxChange");
    }

    #endregion
}

我在VS中得到以下输出：

PreToolExecute
PostToolExecute2 MultipartToSinglepart
Executing: MultipartToSinglepart GPL0 D:\Projects\AmberGIS\Forums\forumtest.gdb\m2s esriGPMessageTypeProcessDefinition
Start Time: Thu Sep 02 11:32:44 2010 esriGPMessageTypeProcessStart
Succeeded at Thu Sep 02 11:32:51 2010 (Elapsed Time: 7.00 seconds) esriGPMessageTypeProcessStop

您是对的，因为不需要AoInitialize。正如您所发现的那样，使用地理处理器对象进行调试是一件令人头疼的事情。

您需要执行的操作是在每次调用后阅读消息，警告和错误队列，以检查是否有问题。没有依赖标准的.NET错误处理的运气。

在每个执行调用之后尝试执行此操作（注意GetMessageS，而不是GetMessage）...

Console.WriteLine("Messages: " + gp.GetMessages(1));
Console.WriteLine("Warnings: " + gp.GetMessages(2));
Console.WriteLine("Errors: " + gp.GetMessages(3));