public static async Task <string[]> QueryAoiEnvelopeAsync(Uri clipFileGdbUri, string clipName)
{
string[] arrRetValues = new string[2];
Geometry aoiGeo = null;
int intCount = 0;
await QueuedTask.Run(() =>
{
using (Geodatabase geodatabase = new Geodatabase(new FileGeodatabaseConnectionPath(clipFileGdbUri)))
using (Table table = geodatabase.OpenDataset <Table>(clipName))
{
//check for multiple buffer polygons and buffer AOI if we need to
QueryFilter queryFilter = new QueryFilter();
using (RowCursor cursor = table.Search(queryFilter, false))
{
while (cursor.MoveNext())
{
using (Feature feature = (Feature)cursor.Current)
{
aoiGeo = feature.GetShape();
}
intCount++;
}
}
}
});
if (intCount > 1)
{
string tmpClipBuffer = "tmpClipBuffer";
BA_ReturnCode success = await GeoprocessingTools.BufferAsync(clipFileGdbUri.LocalPath + "\\" + clipName, clipFileGdbUri.LocalPath + "\\" + tmpClipBuffer,
"0.5 Meters", "ALL");
if (success == BA_ReturnCode.Success)
{
await QueuedTask.Run(() =>
{
using (Geodatabase geodatabase = new Geodatabase(new FileGeodatabaseConnectionPath(clipFileGdbUri)))
using (Table table = geodatabase.OpenDataset <Table>(tmpClipBuffer))
{
//check for multiple buffer polygons and buffer AOI if we need to
QueryFilter queryFilter = new QueryFilter();
using (RowCursor cursor = table.Search(queryFilter, false))
{
while (cursor.MoveNext())
{
using (Feature feature = (Feature)cursor.Current)
{
aoiGeo = feature.GetShape(); // Replace unbuffered geometry with buffered
clipName = tmpClipBuffer;
}
}
}
}
});
}
}
arrRetValues[0] = aoiGeo.Extent.XMin + " " + aoiGeo.Extent.YMin + " " + aoiGeo.Extent.XMax + " " + aoiGeo.Extent.YMax;
arrRetValues[1] = clipFileGdbUri.LocalPath + "\\" + clipName;
return(arrRetValues);
}
