/// <summary>
///
/// </summary>
/// <param name="input"></param>
/// <param name="output"></param>
/// <param name="cancelProgressHandler"></param>
/// <returns></returns>
public bool Execute(IFeatureSet input, IFeatureSet output, ICancelProgressHandler cancelProgressHandler)
{
// Validates the input and output data
if (input == null || output == null)
{
return(false);
}
// We add all the fields
foreach (DataColumn inputColumn in input.DataTable.Columns)
{
output.DataTable.Columns.Add(new DataColumn(inputColumn.ColumnName, inputColumn.DataType));
}
// We add the area field
bool addField = true;
string fieldCount = string.Empty;
int i = 0;
while (addField)
{
if (output.DataTable.Columns.Contains(TextStrings.Area + fieldCount) == false)
{
output.DataTable.Columns.Add(new DataColumn(TextStrings.Area + fieldCount, typeof(double)));
addField = false;
}
else
{
fieldCount = i.ToString();
i++;
}
}
// we add all the old features to output
for (int j = 0; j < input.Features.Count; j++)
{
Feature newFeature = new Feature(input.Features[j].BasicGeometry, output);
foreach (DataColumn colSource in input.DataTable.Columns)
{
newFeature.DataRow[colSource.ColumnName] = input.Features[j].DataRow[colSource.ColumnName];
}
newFeature.DataRow[TextStrings.Area + fieldCount] =
MultiPolygon.FromBasicGeometry(output.Features[j].BasicGeometry).Area;
// Status updates is done here
cancelProgressHandler.Progress(
string.Empty,
Convert.ToInt32((Convert.ToDouble(j) / Convert.ToDouble(input.Features.Count)) * 100),
input.Features[j].DataRow[0].ToString());
if (cancelProgressHandler.Cancel)
{
return(false);
}
}
output.AttributesPopulated = true;
output.Save();
return(true);
}
