将结构类型存储在 c# 的列表或字典中

Question

I have existing legacy code in C# where we store struct type in a memlib type and then create 3 keys to access the memlib structs in a faster way. Please have a look at the below snapshot:

public struct gtBuildRecType : ICloneable
    {
        public double dParentLocCd; //   8 bytes : Key1
        public double dLocationCd; //   8 bytes : Key2
        public int lHierLevel; //   4 bytes : Key3
        public int lSequence;
        public int lDupChecked;
        public int nStatusInd;
    }

Memlib record and the 3 keys are defined like as following:

    static public Memlib<gtBuildRecType> gnBuildTable = null;
    static public Key<gtBuildRecType> gnBuildParentCdKey = null;
    static public Key<gtBuildRecType> gnBuildLocCdKey = null;
    static public Key<gtBuildRecType> gnBuildHierLevelKey = null;

Now, gnBuildTable Memlib can contain thousands of struct records and we can use any of the 3 keys ie, gnBuildParentCdKey, gnBuildLocCdKey, gnBuildHierLevelKey for faster access. For example:

gtBuildRecType uTempRec = gtBuildRecType.CreateInstance();
MemLibStatus nReturn = gnBuildTable.ReadEqual(gnBuildParentCdKey, ref uTempRec);

This piece of code will immediately fill the uTempRec from gnBuildTable where the gnBuildParentCdKey matches a struct record in the gnBuildTable and then we can update the uTempRec accordingly and save the changes.

NOW, My question is: I want to replace the Memlib with List or Dictionary. I would want to store these thousands of struct records in either List or Dictionary but How shall I implement the 3 keys approach with List or Dictionary, so that my search becomes even faster????. I started with List(Not using any key) but half way across i am facing issues to search for accurate struct record in the list.

I had initially tried a dictionary approach as well using single key but i ran into issues there as well.

Thanks in advance:-)

Answer 1

Well, To overcome this issue I could use multi-index 3rd party library or could also work through the DataTable. Make the fields of structs as the column in datatable.