如何使用 MemoryStream 将数据从一种形式发送到另一种形式

Question

我制作了两个窗体并尝试将数据从一个窗体传输到另一个窗体。

对于表单 1，我使用带有以下代码的按钮将值发送到第二个表单

using(MemoryStream ms = new MemoryStream()) {
    using(CryptoStream cs = new CryptoStream(ms, aes.CreateEncryptor(), CryptoStreamMode.Write)) {
        byte[] plainTextMessage = Encoding.UTF8.GetBytes(messageToSend);
        cs.Write(plainTextMessage, 0, plainTextMessage.Length);
        cs.Close();
        Messages_Class.FIrst_Client = ms.ToArray();

        txt_sender1_encryption.Text = Convert.ToBase64String(Messages_Class.FIrst_Client);
        StegScheme scheme;
        string stegoMessage;
        byte[] secretMessage = Encoding.UTF8.GetBytes(txt_sender1_encryption.Text);
        string coverMessage = txtCover.Text;

        scheme = StegScheme.MSCUKAT;
        stegoMessage = ArabicSteg.Encode(secretMessage, true, coverMessage, scheme, out used);
        txt_sender1_Stego.Text = stegoMessage;
    }
}

对于表单 2，我使用带有以下代码的按钮从第一个表单中获取值

using(MemoryStream ms = new MemoryStream()) {
    using(CryptoStream cs = new CryptoStream(ms, aes.CreateDecryptor(), CryptoStreamMode.Write)) {
        cs.Write(Messages_Class.Second_Client, 0, Messages_Class.Second_Client.Length);
        cs.Close();
        txt_incoming_normal.Text = Encoding.UTF8.GetString(ms.ToArray());
        txt_incoming_encrypted.Text = Convert.ToBase64String(Messages_Class.Second_Client);
    }
}

但是，我成功发送和接收Messages_Class.FIrst_Client = ms.ToArray(); 的值，但我想知道如何发送另一个值，例如“stegoMessage”和方案。我希望任何人都可以提供帮助

Answer 1

Messages_Class.FIrst_Client = ms.ToArray();

您是否通过静态类传递值？我认为这不是一个好的选择。

可以通过Application.OpenForms先获取form1的实例，从form1获取数据。

Form1.cs

public partial class Form1 : Form
{
    public TextBox tb1
    {
        get { return textBoxinForm1; }
        set { textBoxinForm1 = value; }
    }

    private void buttonSendtoForm2_Click(object sender, EventArgs e)
    {
        Form2 form2 = (Form2)Application.OpenForms["Form2"];
        form2.tb2.Text = textBoxinForm1.Text;
    }
}

Form2.cs

public partial class Form2 : Form
{
    public TextBox tb2
    {
        get { return textBoxinForm2; }
        set { textBoxinForm2 = value; }
    }

    private void buttonSendtoForm1_Click(object sender, EventArgs e)
    {
        Form1 form1 = (Form1)Application.OpenForms["Form1"];
        form1.tb1.Text = textBoxinForm2.Text;
    }
}

测试结果，

**更新单例模式**

Form2.cs中添加的内容

public partial class Form2 : Form
{
    public static Form2 f2 = null;
    public static Form2 Form2Signleton()
    {
        if (f2 == null)
        {
            f2 = new Form2();
        }
        return f2;
    }

    private void Form2_FormClosing(object sender, FormClosingEventArgs e)
    {
        try
        {
            this.Dispose(true);
            f2 = null;
        }
        catch (Exception m)
        {
            MessageBox.Show(m.ToString());
        }
    }
}

然后在Form1.cs中调用From2Singleton

// open form2 from form1
private void button1_Click(object sender, EventArgs e)
{
    stegoMessage = "test";
    Form2 form2 = Form2.Form2Signleton();
    form2.Show();
}