Linq: Get a list of all tables within DataContext

问题

I have a DataContext (Linq to Sql) with over 100 tables, is it possible to get a list of all those tables and lets say print them to the console? This might be a silly question.

Thanks.

回答1:

It's much easier than above and no reflection required. Linq to SQL has a Mapping property that you can use to get an enumeration of all the tables.

context.Mapping.GetTables();

回答2:

You can do this via reflection. Essentially, you iterate over the properties in your DataContext class. For each property, check to see if that property's generic parameter type has the TableAttribute attribute. If so, that property represents a table:

using System.Reflection;
using System.Data.Linq.Mappings;

PropertyInfo[] properties = typeof(MyDataContext).GetProperties();
foreach (PropertyInfo property in properties)
{
    if(property.PropertyType.IsGenericType)
    {
        object[] attribs = property.PropertyType.GetGenericArguments()[0].GetCustomAttributes(typeof(TableAttribute), false);
        if(attribs.Length > 0)
        {
            Console.WriteLine(property.Name);
        }
    }
}

回答3:

dc= new myDataContext();
var listaTablas = (from tables in dc.Mapping.GetTables() select tables.TableName).ToList();

回答4:

using System.Reflection;
using System.Data.Linq.Mappings;

PropertyInfo[] properties = typeof(MyDataContext).GetProperties();
foreach (PropertyInfo property in properties)
{
    if(property.PropertyType.IsGenericType)
    {
        object[] attribs = property.PropertyType.GetGenericArguments()[0].GetCustomAttributes(typeof(TableAttribute), false);
        if(attribs.Length > 0)
        {
            Console.WriteLine(property.Name);
        }
    }
}

回答5:

for SP

foreach (var sp in Mapping.ContextType.GetMembers().Where(w=> w.Name.ToLower().Contains("push")).GroupBy(g=>g.Name).Select(s=>s.First()))
{
    sp.Name.Dump();
    sp.ToString().Replace("LINQPad.Return", "").Replace("System.Data.Linq.", "").Dump();
}

for Tables

foreach (var table in Mapping.GetTables().Where(t => t.TableName.ToLower().Contains("push")))
{
    table.TableName.Dump();
}

来源：https://stackoverflow.com/questions/736174/linq-get-a-list-of-all-tables-within-datacontext

标签

.net

linq

asp.net-3.5

datacontext