public DataFilter <TModel> AddCustomOrderExpression(string orderByField, string orderByDirection, Expression <Func <TModel, Object> > expression)
{
DataFilterOrderExpression <TModel> expr = new DataFilterOrderExpression <TModel>
{
OrderByField = orderByField,
OrderByDirection = orderByDirection,
Expression = expression
};
CustomOrderExpressionList.Add(expr);
return(this);
}
private static IQueryable <T> GetCustomOrderedQuery <T>(IQueryable <T> queryable, DataFilter <T> filter)
where T : BaseModel
{
DataFilterOrderExpression <T> custom = filter.CustomOrderExpressionList
.FirstOrDefault(x => x.OrderByField == filter.OrderByField && x.OrderByDirection == filter.OrderByDirection);
if (custom.OrderByDirection == "ASC")
{
return(queryable.OrderBy(custom.Expression));
}
else
{
return(queryable.OrderByDescending(custom.Expression));
}
}
public DataFilter <TModel> AddCustomOrderExpression(string orderByField, Expression <Func <TModel, Object> > expressionASC, Expression <Func <TModel, Object> > expressionDESC)
{
DataFilterOrderExpression <TModel> exprASC = new DataFilterOrderExpression <TModel>
{
OrderByField = orderByField,
OrderByDirection = "ASC",
Expression = expressionASC
};
DataFilterOrderExpression <TModel> exprDESC = new DataFilterOrderExpression <TModel>
{
OrderByField = orderByField,
OrderByDirection = "DESC",
Expression = expressionDESC
};
CustomOrderExpressionList.Add(exprASC);
CustomOrderExpressionList.Add(exprDESC);
return(this);
}
