Reset Identity column to zero in SQL Server?

Question

How can I reset the Identity column of a table to zero in SQL Server?

Edit:

How can we do it with LINQ to SQL ?

Answer 1

Generic extension method:

    /// 

    /// Reseeds a table's identity auto increment to a specified value
    /// 
    /// The row type
    /// The type of the identity column
    /// The table to reseed
    /// The new seed value
    public static void ReseedIdentity(this Table table, TIdentity seed)
        where TEntity : class
    {
        var rowType = table.GetType().GetGenericArguments()[0];

        var sqlCommand = string.Format(
            "dbcc checkident ('{0}', reseed, {1})",
            table.Context.Mapping.GetTable(rowType).TableName, 
            seed);

        table.Context.ExecuteCommand(sqlCommand);
    }

Usage: myContext.myTable.ReseedIdentity(0);