/// <summary>
/// Updates aggregate functions by name.
/// </summary>
/// <param name="functionName">The function name.</param>
/// <param name="result">The aggregate result.</param>
/// <param name="gridColumn">The grid column.</param>
private static void UpdateFunctions(string functionName, AggregateResult result, GridViewColumn gridColumn)
{
if (gridColumn == null || string.IsNullOrWhiteSpace(functionName))
return;
var aggregateFunctions = gridColumn.AggregateFunctions;
var func = aggregateFunctions.Cast<AggregateFunction<object, object>>().FirstOrDefault(x => x.FunctionName == functionName);
if (func == null)
{
func = CreateAggregateFunction(functionName, result.SummaryType, result.Value);
var index = aggregateFunctions.TakeWhile(x =>
AggregateHelper.GetAttribute(
AggregateHelper.GetTypeByFullName(x.Caption.Replace(":", null))).Order <
AggregateHelper.GetAttribute(result.SummaryType).Order).Count();
if (aggregateFunctions.Count < index)
aggregateFunctions.Add(func);
else
aggregateFunctions.Insert(index, func);
}
else
{
func.AggregationExpression = x => result.Value;
}
}
/// <summary>
/// Updates aggregate function according to aggregation result.
/// </summary>
/// <param name="gridColumn">The grid column.</param>
/// <param name="columnItem">The column item.</param>
/// <param name="aggregateDefinition">The aggregate definition.</param>
/// <param name="result">The aggregate result.</param>
private static void UpdateAggregationResult(GridViewColumn gridColumn, IColumnItem columnItem, AggregateDefinition aggregateDefinition, AggregateResult result)
{
if (aggregateDefinition == null || result == null)
return;
UpdateFunctions(aggregateDefinition.FunctionName, result, gridColumn);
UpdateCriteriaList(aggregateDefinition, columnItem);
}
