Question

我在将所有需要的数据从一种表单传递到另一种表单时遇到问题。下面你可以看到我想传递的数据，但是会发生什么，它只传递（_12nc，BID，设备，orderNr）而不是List＆lt;＆gt;步骤。

Steps stepsForm = new Steps(ref steps, _12nc, BID, device, orderNr);

但如果我尝试仅传递List＆lt;＆gt;步骤，则传递步骤：

Steps stepsForm = new Steps(ref steps)

如何传递List和单个值？

这是我要传递数据的代码：

private void btn_start_Click(object sender, EventArgs e)
    {
        List<Step> steps = new List<Step>();
        int device;
        string _12nc;
        int BID;
        int orderNr;

        device = Convert.ToInt32(txt_device.Text);
        _12nc = txt_12nc.Text;
        BID = Convert.ToInt32(txt_BID.Text);
        orderNr = Convert.ToInt32(txt_OrderNr.Text);

        // Get list of steps (ID and Description)
        steps = myDBHelper.GetSteps(_12nc,device, BID);          

        // Open new form and pass steps to it
        Steps stepsForm = new Steps(ref steps, _12nc, BID, device, orderNr); //, _12nc, BID, device, orderNr
        stepsForm.Show();
        this.Hide();
    }

这就是我想把它传递给的地方：

    public partial class Steps : Form
{
    private List<Step> steps = new List<Step>();
    private List<Parameter> param = new List<Parameter>();

    private String _12nc;
    private int BID;
    private int device;
    private int orderNr;


    public Steps(ref List<Step> steps, string _12nc, int BID, int device, int orderNr)
    {
        InitializeComponent();
        this.steps = steps;
        this._12nc = _12nc;
        this.BID = BID;
        this.device = device;
        this.orderNr = orderNr;
        RefreshLabels();
    }

Answer 1

根据您的要求修改下面的代码，我已经检查它是否正常工作。

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    private void button1_Click(object sender, EventArgs e)
    {
        List<Step> steps = new List<Step>();
        Step objStep = new Step();
        int device;

        device = 32;
        objStep._12nc = "dsfdsF";
        objStep.BID = 3;
        objStep.orderNr = 12;

        // Get list of steps (ID and Description)
        //steps = myDBHelper.GetSteps(_12nc, device, BID);
        steps.Add(objStep);
        // Open new form and pass steps to it
        Form2 stepsForm = new Form2(steps, objStep, device); //, _12nc, BID, device, orderNr
        stepsForm.Show();
        this.Hide();
    }
}

第二种形式

public partial class Form2 : Form
{
    public Form2()
    {
        InitializeComponent();
    }
     private List<Step> steps = new List<Step>();
private List<Parameter> param = new List<Parameter>();

private String _12nc;
private int BID;
private int device;
private int orderNr;


public Form2(List<Step> steps, Step objStep, int device)
{
    InitializeComponent();
    this.steps = steps;
    this._12nc = objStep._12nc;
    this.BID = objStep.BID;
    this.device = device;
    this.orderNr = objStep.orderNr;
    //RefreshLabels();
}
}
public class Step
{
    public string _12nc { get; set; }
    public int BID { get; set; }
    public int orderNr { get; set; }
}
public class Parameter
{
}

C＃并非所有数据都从一个表单传递到另一个表单

1 个答案: