树视图节点/子节点中的图像

Question

我正在使用具有此结构的树视图

我必须为表示数据类型（int，char等等）的每个SUB-SUBCHILD添加一个图像，但它以奇怪的方式工作......

image1是“char”图像而不是“int” image2是“char”图像 image3是“双”图像而不是“char” image4是默认（索引0）图像而不是“double”

最后一个SUB-SUBCHILD总是与预期不同！

在调试模式下，imagelist索引值是我期望看到的，但在树视图中没有。

为什么？

这是我的代码：

    private void createTree(string[,] strArrLF3) //strArrLF3 matrix of n ROWS and 11 COLS
    {
        int counter = 0;
        Int32 arrayLen = 0;

        arrayLen = (strArrLF3.Length) / 11;

        trvSimulations.ImageList = imgListRes;  //trvSimulation is the name of treeview

        TreeNode ParentNode = new TreeNode();
        ParentNode.Text = "Root";
        ParentNode.ForeColor = Color.Black;
        ParentNode.BackColor = Color.White;

        ParentNode.ImageIndex = 0;
        ParentNode.SelectedImageIndex = 0;
        trvSimulations.Nodes.Add(ParentNode);         //Root node

        TreeNode trvChild_ATSM0 = new TreeNode();
        trvChild_ATSM0.Text = "CHILD1";
        trvChild_ATSM0.ForeColor = Color.Black;
        trvChild_ATSM0.BackColor = Color.White;
        trvChild_ATSM0.ImageIndex = 1;
        trvChild_ATSM0.SelectedImageIndex = 1;
        ParentNode.Nodes.Add(trvChild_ATSM0);         //CHILD1 node (child of Root node)

        TreeNode chdIN_ATSM0 = new TreeNode();
        chdIN_ATSM0.Text = "Input Signals";
        chdIN_ATSM0.ForeColor = Color.Black;
        chdIN_ATSM0.BackColor = Color.White;
        chdIN_ATSM0.ImageIndex = 3;
        chdIN_ATSM0.SelectedImageIndex = 3;
        trvChild_ATSM0.Nodes.Add(chdIN_ATSM0);         //Input node (child of  CHILD1)

        TreeNode chdOUT_ATSM0 = new TreeNode();
        chdOUT_ATSM0.Text = "Output Signals";
        chdOUT_ATSM0.ForeColor = Color.Black;
        chdOUT_ATSM0.BackColor = Color.White;
        chdOUT_ATSM0.ImageIndex = 2;
        chdOUT_ATSM0.SelectedImageIndex = 2;
        trvChild_ATSM0.Nodes.Add(chdOUT_ATSM0);         //Output node (child of  CHILD1)

        TreeNode sub_chdIN_ATSM0 = new TreeNode(), sub_chdOUT_ATSM0 = new TreeNode();

        counter = 0;
        int imagePos = 0;
        for (counter = 0; counter < arrayLen; counter++)
        {
            string signal = strArrLF3[counter, 9]; //matrix column containing a string ("int", "char", "long", "double")
            imagePos = imageSigType(signal);  //function containing a SWITCH/CASE that return an integer value (index of imagelist) 
            if (strArrLF3[counter, 0] == "CHILD1")
            {
                if (strArrLF3[counter, 8] == "I")
                {
                    sub_chdIN_ATSM0.ImageIndex = imagePos;
                    sub_chdIN_ATSM0.SelectedImageIndex = imagePos;
                    sub_chdIN_ATSM0 = chdIN_ATSM0.Nodes.Add(strArrLF3[counter, 1]);
                }
                else if (strArrLF3[counter, 8] == "O")
                {
                    sub_chdOUT_ATSM0.ImageIndex = imagePos;
                    sub_chdOUT_ATSM0.SelectedImageIndex = imagePos;
                    sub_chdOUT_ATSM0 = chdOUT_ATSM0.Nodes.Add(strArrLF3[counter, 1]);
                }
            }
        }
    }

由于