public bool get_value(int col, int row, out TVal val)
{
TRow r;
if (!_rows.get_value(row, out r))
{
val = default(TVal);
return(false);
}
else
{
val = r[col];
return(true);
}
}
public bool get_value(int row, out T val)
{
if (_cache.TryGetValue(row, out val))
{
return(true);
}
else
{
if (_cd.get_value(row, out val))
{
_cache [row] = val;
return(true);
}
else
{
return(false);
}
}
}
public bool get_value(int col, int row, out TVal val)
{
TRow r;
if (!_rows.get_value(row, out r))
{
val = default(TVal);
return(false);
}
string propname = _map[col];
if (propname == null)
{
// TODO what if there is no propname for the given column? return value not found.
val = default(TVal);
return(false);
}
var typ = typeof(TRow);
var ti = typ.GetTypeInfo();
var p = ti.GetDeclaredProperty(propname);
if (p == null)
{
// TODO what? throw? return value not found?
val = default(TVal);
return(false);
}
TVal v = (TVal)p.GetValue(r); // TODO is this cast safe? does this function work for anything but strings?
val = v;
return(true);
}
public bool get_value(int row, out T val)
{
return(_next.get_value(row, out val));
}