c#如何实现以下效果？

Question

PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.PosState = Convert.ToInt32(ds1.Tables[0].Rows[i]["Pos_State"]);

Answer 1

PosGroup 是什么，出现了什么问题？

Answer 2

 public  struct TPosGroup
    {
      
        public TLane Lane;    }    public struct TLane
    {
        public TRow[] Row;
    }    public struct TRow
    {
        public TCol[] Col;
    }    public struct TCol
    {
        public TLayer[] Layer;
    }    public struct TLayer
    {
        public TPos Pos;
    }    public struct TPos
    {
        public long PID;
        public int PosState;
        public int TypeOfState;
        public int TypeOfCusID;
        public int Zone_ID;
        public bool HasSetValue;    }

Answer 3

把 struct 都换成 class ，使用时都 new 实例化

Answer 4

数组长度设定一个合适的值
public class TPosGroup
{
    public TLane Lane = new TLane();
}public class TLane
{
    public TRow[] Row = new TRow[100];
}public class TRow
{
    public TCol[] Col = new TCol[100];
}public class TCol
{
    public TLayer[] Layer = new TLayer[100];
}public class TLayer
{
    public TPos Pos = new TPos();
}public class TPos
{
    public long PID;
    public int PosState;
    public int TypeOfState;
    public int TypeOfCusID;
    public int Zone_ID;
    public bool HasSetValue;
}

Answer 5

if(ds1.Tables[0].Rows.Count>0)
                {
                    for (int i = 0; i < ds1.Tables[0].Rows.Count;i++ )
                    {                        PosGroup.LastUpdateTime = Convert.ToInt32(ds1.Tables[0].Rows[i]["UPD"]);
                        IRow = Convert.ToInt32(ds1.Tables[0].Rows[i]["NO_Line"]) - 1;
                        ICol = Convert.ToInt32(ds1.Tables[0].Rows[i]["NO_Col"]) - 1;
                        ILayer = Convert.ToInt32(ds1.Tables[0].Rows[i]["NO_Layer"]) - 1;                        //PosGroup.Lane = new publicpra.TLane();
                        //PosGroup.Lane.Row = new publicpra.TRow[2];
                        //PosGroup.Lane.Row[IRow].Col = new publicpra.TCol[14];
                        //PosGroup.Lane.Row[IRow].Col[ICol].Layer = new publicpra.TLayer[11];
                        //PosGroup.Lane.Row[IRow].Col[ICol].Layer[ILayer].Pos = new publicpra.TPos();
                                               for(int m=0;m<=IRow;m++)
                        {
                            for (int n = 0; n <= ICol; ICol++)
                            {
                                for (int h = 0; h <= ILayer;h++ )
                                {
                                    PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.PosState = Convert.ToInt32(ds1.Tables[0].Rows[i]["Pos_State"]);
                                    PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.Zone_ID = Convert.ToInt32(ds1.Tables[0].Rows[i]["Zone_ID"]);                                    PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.PID = Convert.ToInt32(ds1.Tables[0].Rows[i]["PID"]);                                    PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.HasSetValue = true;
                                }                            }                        }
                        
                    }

Answer 6

在PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.PosState = Convert.ToInt32(ds1.Tables[0].Rows[i]["Pos_State"]);
提示：未将对象引用设置到对象的实例

Answer 7

PosGroup 声明的地方加上
TPosGroup PosGroup = new TPosGroup();

Answer 8

把 for(int m=0;m<=IRow;m++) 循环整个换成下面的代码，看哪行出的错
var lane = PosGroup.Lane;
var row = lane.Row;for (int m = 0; m <= IRow; m++)
{
    PosGroup.Lane.Row[m] = new TRow();
    for (int n = 0; n <= ICol; ICol++)
    {
        PosGroup.Lane.Row[m].Col[n] = new TCol();
        for (int h = 0; h <= ILayer; h++)
        {
            PosGroup.Lane.Row[m].Col[n].Layer[h] = new TLayer();
            PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.PosState = Convert.ToInt32(ds1.Tables[0].Rows[i]["Pos_State"]);
            PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.Zone_ID = Convert.ToInt32(ds1.Tables[0].Rows[i]["Zone_ID"]);
            PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.PID = Convert.ToInt32(ds1.Tables[0].Rows[i]["PID"]);
            PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.HasSetValue = true;
        }
    }
}

Answer 9

 if(ds1.Tables[0].Rows.Count>0)
                {
                    for (int i = 0; i < ds1.Tables[0].Rows.Count;i++ )
                    {                        PosGroup.LastUpdateTime = Convert.ToInt32(ds1.Tables[0].Rows[i]["UPD"]);
                        IRow = Convert.ToInt32(ds1.Tables[0].Rows[i]["NO_Line"]) - 1;
                        ICol = Convert.ToInt32(ds1.Tables[0].Rows[i]["NO_Col"]) - 1;
                        ILayer = Convert.ToInt32(ds1.Tables[0].Rows[i]["NO_Layer"]) - 1;                        var lane = PosGroup.Lane;
                        var row = lane.Row;                        for (int m = 0; m <= IRow; m++)
                        {
                            PosGroup.Lane.Row[m] = new WMS_test.publicpra.TRow();
                            for (int n = 0; n <= ICol; ICol++)
                            {
                                PosGroup.Lane.Row[m].Col[n] = new WMS_test.publicpra.TCol();
                                for (int h = 0; h <= ILayer; h++)
                                {
                                    PosGroup.Lane.Row[m].Col[n].Layer[h] = new WMS_test.publicpra.TLayer();
                                    PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.PosState = Convert.ToInt32(ds1.Tables[0].Rows[i]["Pos_State"]);
                                    PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.Zone_ID = Convert.ToInt32(ds1.Tables[0].Rows[i]["Zone_ID"]);
                                    PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.PID = Convert.ToInt32(ds1.Tables[0].Rows[i]["PID"]);
                                    PosGroup.Lane.Row[m].Col[n].Layer[h].Pos.HasSetValue = true;
                                }
                            }
                        }

Answer 10

for (int n = 0; n <= ICol; ICol++)
改成
for (int n = 0; n <= ICol; n++)

Answer 11

这就不用了，有问题在 CSDN 上提出，大家都会热心回答的