保存表单状态,然后以相同状态重新打开它

Question

我有一个小程序,winforms它有3个按钮.到目前为止,该程序允许用户通过单击相应的按钮来更改另一个按钮的颜色,而第三个按钮还没有执行任何操作.我想要做的是让用户保存对表单所做的更改(保存表单状态).因此,当重新打开表单时,它将以保存的相同状态打开.

我希望我清楚自己所追求的是什么

以下是表单的可视化:

如果有任何帮助我到目前为止的代码:

public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            btnToColor.Text = "";
        }

        int c = 0;
        private void btnColorSwap_Click(object sender, EventArgs e)
        {
            if (c == 0)
            {
                btnToColor.BackColor = Color.Yellow;
                c++;

            }

            else if (c == 1)
            {
                btnToColor.BackColor = Color.YellowGreen;

                c++;
            }

            else if (c == 2)
            {
                btnToColor.BackColor = Color.LimeGreen;

                c = 0;
            }

        }
    }

Answer 1

如果查看项目属性页,可以添加设置文件.

要使用代码中的设置,您可以执行以下操作:

Properties.Settings.Default.SettingName

请记住,这些设置是本地的,需要在每台机器上指定

示例代码:

    private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    {
        Properties.Settings.Default.btn1 = button1.UseVisualStyleBackColor ? Color.Transparent : button1.BackColor;
        Properties.Settings.Default.btn2 = button1.UseVisualStyleBackColor ? Color.Transparent : button2.BackColor;
        Properties.Settings.Default.btn3 = button1.UseVisualStyleBackColor ? Color.Transparent : button3.BackColor;
    }

    private void Form1_Load(object sender, EventArgs e)
    {

        if (Properties.Settings.Default.btn1 != Color.Transparent) button1.BackColor = Properties.Settings.Default.btn1;
        if (Properties.Settings.Default.btn2 != Color.Transparent) button1.BackColor = Properties.Settings.Default.btn2;
        if (Properties.Settings.Default.btn3 != Color.Transparent) button1.BackColor = Properties.Settings.Default.btn3;
    }

以下是MSDN上设置类的链接 http://msdn.microsoft.com/en-us/library/aa730869(VS.80).aspx

属性页

Answer 2

这对您来说可能/可能不容易.

首先创建一个类来保存你的状态:

public class MyFormState {
    public string ButtonBackColor { get; set; }
}

现在,Form使用此对象声明您的成员:

public partial class Form1 : Form {
    MyFormState state = new MyFormState();

在表单加载时,检查配置是否存在,然后加载它:

private void Form1_Load(object sender, EventArgs e) {
    if (File.Exists("config.xml")) {
        loadConfig();
    }

    button1.BackColor = System.Drawing.ColorTranslator.FromHtml(state.ButtonBackColor);
}

private void loadConfig() {
    XmlSerializer ser = new XmlSerializer(typeof(MyFormState));
    using (FileStream fs = File.OpenRead("config.xml")) {
        state = (MyFormState)ser.Deserialize(fs);
    }
}

表单关闭时..保存配置:

private void Form1_FormClosing(object sender, FormClosingEventArgs e) {
    writeConfig();
}

private void writeConfig() {
    using (StreamWriter sw = new StreamWriter("config.xml")) {
        state.ButtonBackColor = System.Drawing.ColorTranslator.ToHtml(button1.BackColor);
        XmlSerializer ser = new XmlSerializer(typeof(MyFormState));
        ser.Serialize(sw, state);
    }
}

然后,您可以将成员添加到您的州类,并将它们写入config.xml文件.