[c#] Set database timeout in Entity Framework

My command keeps timing out, so I need to change the default command timeout value.

I've found myDb.Database.Connection.ConnectionTimeout, but it's readonly.

How can I set the command timeout in Entity Framework 5 ?

For Database first Aproach:

We can still set it in a constructor, by override the ContextName.Context.tt T4 Template this way:

<#=Accessibility.ForType(container)#> partial class <#=code.Escape(container)#> : DbContext
{
    public <#=code.Escape(container)#>()
        : base("name=<#=container.Name#>")
    {
        Database.CommandTimeout = 180;
<#
if (!loader.IsLazyLoadingEnabled(container))
{
#>
        this.Configuration.LazyLoadingEnabled = false;
<#
}

Database.CommandTimeout = 180; is the acutaly change.

The generated output is this:

public ContextName() : base("name=ContextName")
{
    Database.CommandTimeout = 180;
}

If you change your Database Model, this template stays, but the actualy class will be updated.

In the generated constructor code it should call OnContextCreated()

I added this partial class to solve the problem:

partial class MyContext: ObjectContext
{
    partial void OnContextCreated()
    {
        this.CommandTimeout = 300;
    }
}

You can use this simple :
dbContext.Database.SetCommandTimeout(300);

You can use DbContext.Database.CommandTimeout = 180; // seconds

It's pretty simple and no cast required.

I extended Ronnie's answer with a fluent implementation so you can use it like so:

dm.Context.SetCommandTimeout(120).Database.SqlQuery...

public static class EF
{
    public static DbContext SetCommandTimeout(this DbContext db, TimeSpan? timeout)
    {
        ((IObjectContextAdapter)db).ObjectContext.CommandTimeout = timeout.HasValue ? (int?) timeout.Value.TotalSeconds : null;

        return db;
    }

    public static DbContext SetCommandTimeout(this DbContext db, int seconds)
    {
        return db.SetCommandTimeout(TimeSpan.FromSeconds(seconds));
    } 
}

I just ran in to this problem and resolved it by updating my application configuration file. For the connection in question, specify "Connection Timeout=60" (I am using entity framework version 5.0.0.0)

ConnectionTimeout Setting

My partial context looks like:

public partial class MyContext : DbContext
{
    public MyContext (string ConnectionString)
        : base(ConnectionString)
    {
        this.SetCommandTimeOut(300);
    }

    public void SetCommandTimeOut(int Timeout)
    {
        var objectContext = (this as IObjectContextAdapter).ObjectContext;
        objectContext.CommandTimeout = Timeout;
    }
}

I left SetCommandTimeOut public so only the routines I need to take a long time (more than 5 minutes) I modify instead of a global timeout.

Same as other answers, but as an extension method:

static class Extensions
{
    public static void SetCommandTimeout(this IObjectContextAdapter db, TimeSpan? timeout)
    {
        db.ObjectContext.CommandTimeout = timeout.HasValue ? (int?) timeout.Value.TotalSeconds : null;
    }
}