string connectionString { get { return "Server=;Database=;Integrated Security=SSPI;"; } }
[Test]
public void Test()
{
using var dbcontext = new DB_Context(connectionString);
var entity = new ResultInfoEntity();
var maxLength = GetMaxLenth(dbcontext, nameof(ResultInfoEntity), nameof(entity.EntName));
}
private int GetMaxLenth(DbContext context, string entityName, string propertyName)
{
var tables = context.Model.GetEntityTypes();
var table = tables.First(type => type.ClrType.Name == entityName);
return table.FindProperty(propertyName).GetMaxLength() ?? -1;
}