Converting VB.Net to C# -type or namespace not found

Question

I am converting a VB.Net project to C#. I declare some public structures in one module and access them in another. I get a "The type or namespace name 'ItemInfo' could not be found." - where ItemInfo is one of the structures. Here is code snippet where I declare the structure:

using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.Diagnostics;
using System.Windows.Forms;
using System.Data.Common;
using System.IO;
using System.Net.Mail;
using dbAutoTrack.DataReports;
using dbAutoTrack.DataReports.PDFExport;

namespace PlanSchedule
{

    static class PlanScheduleBLL
    {

        #region "Structures"

        public struct ItemInfo
        {
            // LinearProcessTime = sum of bll level resource requirements; 
            // when more than one resource on a level, uses max time required;
            // not saved in database, used in order processing only
            public string ItemNumber;
            public string Description;
            public string MakeBuy;
            public long TotalShelfLife;
            public long ReceivedShelfLife;
            public float YieldPercentage;
            public float BatchSize;
            public float SafetyStock;
        }

...and this is where I reference it:

using Microsoft.VisualBasic;
using System;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using System.Drawing;
using System.Diagnostics;
using System.Windows.Forms;

namespace PlanSchedule
{
public partial class BuildToStockOrderEntry
{


    // slItemList
    // Key = <item number> - <item description> Value = item number
    private SortedList<string, string> slItemList = new SortedList<string, string>();
    // slItems
    // Key = item number Value = item info
    private SortedList<string, ItemInfo> slItems = new SortedList<string, ItemInfo>();

I do not know C# so I may have a problem in my syntax. Is my declaration of the SortedList using ItemInfo correct?

TIA, John

Answer 1

You currently have the ItemInfo struct nested in the static class PlanScheduleBLL . You have two options:

• Pull it out of that class, and just into the namespace.
• If you really want it nested, you need to make PlanScheduleBLL public, and refer to it like PlanScheduleBLL.ItemInfo

Answer 2

It's because you are declaring the struct inside another class. You could reference it by doing:

private SortedList<string, PlanScheduleBLL.ItemInfo> slItems ...

But a much better approach would be to just define the struct outside of the class and directly in the namespace itself (ie get rid of the PlanScheduleBLL static class).

Answer 3

将ItemInfo结构放置在PlanScheduleBLL类之外。