public static IEnumerable <T> GetUniqueColumnValues <T>(ICursor cursor, string columnName)
{
IDataStatistics dataStatistics = null;
try
{
//获取null值
T nullValue = default(T);
dataStatistics = new DataStatisticsClass();
dataStatistics.Cursor = cursor;
dataStatistics.Field = columnName;
IEnumerator enumerator = dataStatistics.UniqueValues;
enumerator.Reset();
while (enumerator.MoveNext())
{
object currValue = enumerator.Current;
if (currValue == DBNull.Value || currValue == null)
{
yield return(nullValue);
}
else
{
yield return((T)Convert.ChangeType(currValue, typeof(T)));
}
}
}
finally
{
AOUtil.ReleaseComObjectAllRefs(dataStatistics);
}
}
public override void OnClick()
{
ILayer pLayer = (ILayer)_mapControl.CustomProperty;
if (pLayer is IGroupLayer)
{
//获取GroupLayer中的图层
var subLayers = LayerUtil.GetFeatureLayersFromGroupLayer(pLayer as IGroupLayer);
foreach (var subLayer in subLayers)
{
_mapControl.Map.DeleteLayer(subLayer);
AOUtil.ReleaseComObjectAllRefs(subLayer);
}
}
_mapControl.Map.DeleteLayer(pLayer);
_mapControl.ActiveView.Refresh();
AOUtil.ReleaseComObjectAllRefs(pLayer);
}
public override void OnClick()
{
_mapControl.Map.ClearLayers();
AOUtil.ReleaseComObjectAllRefs(_mapControl.Map.Layers);
_mapControl.ActiveView.Refresh();
}
private void SetValues(String identifier,
String identifierHash,
String identifierHashAlgorithm,
String qualifier)
{
if (identifier == null || "".Equals(identifier))
{
throw new ArgumentNullException("El identificador de politica no puede ser nulo ni vacio");
}
this.policyIdentifier = identifier;
if (identifierHash != null && (!"0".Equals(identifierHash)) && (identifierHashAlgorithm == null || "".Equals(identifierHashAlgorithm)))
{
throw new ArgumentNullException("Si se indica la huella digital del identificador de politica es obligatorio indicar tambien el algoritmo");
}
if (identifierHash == null)
{
try
{
//this.policyIdentifierHash = System.Convert.ToBase64String(Digester.Digest(UrlReader.ReadUri(new Uri(identifier)), "SHA-512"));
//MODIFICACION DAL -> NO DEBERÍA SER "new Uri(qualifier)" EN VEZ DE "new Uri(identifier)" ????
if (qualifier != null)
{
this.policyIdentifierHash = System.Convert.ToBase64String(Digester.Digest(UrlReader.ReadUri(new Uri(qualifier)), "SHA-512"));
this.policyIdentifierHashAlgorithm = "SHA-512";
}
}
catch (Exception e)
{
throw new ArgumentNullException("Si no se especifica la huella digital de la politica es necesario que el identificador sea una URL accesible universalmente: " + e, e);
}
}
else
{
if ("0".Equals(identifierHash))
{
this.policyIdentifierHash = null;
}
else
{
if (!AOUtil.IsBase64(new System.Text.UTF8Encoding().GetBytes(identifierHash)))
{
throw new ArgumentNullException("La huella digital de la politica debe estar en formato Base64");
}
try
{
this.policyIdentifierHashAlgorithm = AOSignConstants.GetDigestAlgorithmName(identifierHashAlgorithm);
}
catch (Exception e)
{
throw new ArgumentNullException("El algoritmo de huella digital no esta soportado: " + identifierHashAlgorithm, e);
}
this.policyIdentifierHash = identifierHash;
}
}
if (qualifier != null && (!"".Equals(qualifier)))
{
try
{
this.policyQualifier = new Uri(qualifier);
}
catch (Exception e)
{
throw new ArgumentNullException("El calificador de la politica debe ser una URL valida", e);
}
}
}
