从数据库中的表获取列名

Question

in my database i have many of tables one of Tables is nambed Company ". and its columns names are as follows ("ComName","ComAddress","ComType" ..etc) I have a function which get the columns name from Company table :

public List<string> GetColumnNames(string tablename)
{
    var names = typeof(Company).GetProperties().Select(p => p.Name).ToArray();
    return names.ToList();
}

Until now everything is good but what if i want to get the columns of other tables ? so i have to put the name of the new table (that is given in the function as "tablename") instead of "Company" in this sentence :

var names = typeof(Company).GetProperties().Select(p => p.Name).ToArray();

but it is string so its not working. any idea ?

Answer 1

typeof(Company).GetProperties() isn't fetching the names of the columns of your table at all though - it's fetching the names of the properties of the C# class/entity that you're using to represent that table. Do you already have a process to guarantee you have C# entities with property names that exactly match the column names of your tables? If so, you can do the same principle (but instead of using typeof(Company) you'd need to find the type by name, which there are various ways of doing). If not, you'll need to to actually query the database to find the column names.

Answer 2

As far as i know, you can use the Type parameter.

public List<string> GetColumnNames(Type tablename)
{

    var names = tablename.GetProperties().Select(p => p.Name).ToArray();

    return names.ToList();
}