public string Description {get; set;}

public void CreateRangeDomainSnippet(Geodatabase geodatabase)
{
    // Create a range description with minimum value = 0 and maximum value = 1000
    RangeDomainDescription rangeDomainDescriptionMinMax = new RangeDomainDescription("RangeDomain_0_1000",
      FieldType.Integer, 0, 1000)
    { Description = "Domain value ranges from 0 to 1000" };

    SchemaBuilder schemaBuilder = new SchemaBuilder(geodatabase);

    // Create  a range domain 
    schemaBuilder.Create(rangeDomainDescriptionMinMax);
    schemaBuilder.Build();
}