private DataBinding TranslateBinding(DataBinding binding)
{
string path = binding.Path;
int?index;
if (path != null && indexAliases.TryGetValue(path, out index))
{
return(binding.ReplaceIndex(index));
}
return(binding);
}
private ResolvedBinding ResolveBinding(DataBinding binding)
{
var resolvedBinding = binding as ResolvedBinding;
if (resolvedBinding != null && resolvedBinding.DataSetInfo.IsOwnedBy(this))
{
return(resolvedBinding);
}
int?externalIndex = binding.Index;
if (!externalIndex.HasValue)
{
foreach (IDataSet dataSet in DataSets)
{
if (dataSet.CanBind(binding))
{
return(new ResolvedBinding(lookupTable[dataSet], binding, null));
}
}
}
else
{
DataBinding nullIndexBinding = null;
int currentOffset = 0;
foreach (IDataSet dataSet in DataSets)
{
int currentColumnCount = dataSet.ColumnCount;
DataBinding currentBinding;
if (currentOffset == 0)
{
currentBinding = binding;
}
else
{
int internalIndex = externalIndex.Value - currentOffset;
if (internalIndex < 0 || internalIndex >= currentColumnCount)
{
if (nullIndexBinding == null)
{
nullIndexBinding = binding.ReplaceIndex(null);
}
currentBinding = nullIndexBinding;
}
else
{
currentBinding = binding.ReplaceIndex(internalIndex);
}
}
if (dataSet.CanBind(currentBinding))
{
return(new ResolvedBinding(lookupTable[dataSet], currentBinding, binding.Index));
}
currentOffset += currentColumnCount;
}
}
return(null);
}