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really slow retrieving list of featureclasses from sde

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1
09-22-2011 03:22 PM
DerekLoi
by
Regular Contributor
‎09-22-2011 03:22 PM
my code works fine but returning a list of sde featureclasses takes quite a while
shouldn't it be quick?  my old MapObjects code to list SDE featureclasses in a listview just took less than 5 seconds...
can anyone help?  this issue is pretty annoying! :mad:

here's my code:
            ESRI.ArcGIS.Geodatabase.IEnumDataset enumDataset = workspace.get_Datasets(esriDatasetType.esriDTFeatureClass);
            enumDataset.Reset();

            lblStatus.Text = "Retrieving SDE featureclasses.  Please wait...";
            ESRI.ArcGIS.Geodatabase.IDataset dataset = enumDataset.Next();

            while (dataset != null)
            {
                //this will list the name of the featureclass in the root of the sde server
                //myFeatureclassList.Items.Add(dataset.BrowseName);
                if (dataset.BrowseName.ToString().IndexOf("Tract_" + DateTime.Now.Year.ToString()) >= 0)
                {
                    lblStatus.Text = "Adding featureclass: " + dataset.BrowseName;

                    //have to use a delegate or in this case INVOKE to prevent the cross-thread error
                    this.Invoke((Action)(() => myFeatureclassList.Items.Add(dataset.BrowseName))); 
                }
                dataset = enumDataset.Next();
            }

            lblStatus.Text = "Sorting contents...please wait...";
            this.Invoke((Action)(() => list_featureclass.Sorted = true));
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1 Reply
DerekLoi
by
Regular Contributor
‎11-23-2011 12:09 PM
my code works fine but returning a list of sde featureclasses takes quite a while
shouldn't it be quick?  my old MapObjects code to list SDE featureclasses in a listview just took less than 5 seconds...
can anyone help?  this issue is pretty annoying! :mad:

here's my code:
            ESRI.ArcGIS.Geodatabase.IEnumDataset enumDataset = workspace.get_Datasets(esriDatasetType.esriDTFeatureClass);
            enumDataset.Reset();

            lblStatus.Text = "Retrieving SDE featureclasses.  Please wait...";
            ESRI.ArcGIS.Geodatabase.IDataset dataset = enumDataset.Next();

            while (dataset != null)
            {
                //this will list the name of the featureclass in the root of the sde server
                //myFeatureclassList.Items.Add(dataset.BrowseName);
                if (dataset.BrowseName.ToString().IndexOf("Tract_" + DateTime.Now.Year.ToString()) >= 0)
                {
                    lblStatus.Text = "Adding featureclass: " + dataset.BrowseName;

                    //have to use a delegate or in this case INVOKE to prevent the cross-thread error
                    this.Invoke((Action)(() => myFeatureclassList.Items.Add(dataset.BrowseName))); 
                }
                dataset = enumDataset.Next();
            }

            lblStatus.Text = "Sorting contents...please wait...";
            this.Invoke((Action)(() => list_featureclass.Sorted = true));


ah ha...  i guess the best way to achieve this is to just query the sde server from sql...
and it only takes like 1 second to return all the featureclasses and all the versions!!!
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