I'd like to convert a VB random file to an MSSQL table.
I found a code snippet which does the job but there are bits I dont understand.
Like this below:

public struct Product
{
	public int ID;
	[VBFixedString(25)]
	public string ProductName;
	[VBFixedString(25)]
	public string ProductType;
 
	public Product(int new_id, string product_name, string product_type) : this()
	{
		ID = new_id;
		ProductName = product_name;
		ProductType = product_type;
	}
}

What does [VBFixedString(25)] do in front of the variables?