public IDisposable SetFilterParameter(string filterName, string parameterName, object value)
{
int filterIndex = GetFilterIndex(filterName);
DataFilterConfiguration dataFilterConfiguration = new DataFilterConfiguration(_filters[filterIndex]);
object oldValue = null;
bool hasOldValue = dataFilterConfiguration.FilterParameters.ContainsKey(parameterName);
if (hasOldValue)
{
oldValue = dataFilterConfiguration.FilterParameters[parameterName];
}
dataFilterConfiguration.FilterParameters[parameterName] = value;
_filters[filterIndex] = dataFilterConfiguration;
ApplyFilterParameterValue(filterName, parameterName, value);
return(new DisposeAction(delegate
{
if (hasOldValue)
{
SetFilterParameter(filterName, parameterName, oldValue);
}
}));
}