C# - Windows 使用子控件和数据绑定形成用户控件

Question

我创建了一个相当简单的用户控件，其中包含一些子控件和组件。我在其中一个组件属性和其中一个控件属性之间添加了一个数据绑定。到目前为止一切顺利，当我将用户控件添加到表单时出现问题。 visual studio 序列化程序以 InitializeComponent 方法的形式再次添加该绑定，因此抛出异常告诉我属性已经数据绑定。

另一个小问题是它还会序列化我在用户控件本身中更改的属性，即使我没有在表单中更改它们。那个问题可能会导致上面的问题，我真的不知道。

用户控制码：

public partial class BrowseFolder : UserControl {
    private const string CATEGORY_CONTROLS = "Controls";

    public BrowseFolder() {
        InitializeComponent();
    }

    [Category(CATEGORY_CONTROLS)]
    [Description("The label that describes the folder's meaning in the context it's in.")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
    public Label Label => this.Lbl;
    [Category(CATEGORY_CONTROLS)]
    [Description("The text box that displays or lets the user edit the full path of the folder.")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
    public TextBox TextBox_DirectoryFullPath => this.TxtBox_DirectoryFullPath;
    [Category(CATEGORY_CONTROLS)]
    [Description("The button that displays the folder browse dialog when clicked.")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
    public Button Button_BrowseDirectory => this.Btn_BrowseDirectory;
    [Category(CATEGORY_CONTROLS)]
    [Description("The folder browse dialog.")]
    [DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
    public NotifyPropertyChangedFolderBrowseDialog FolderBrowserDialog => this.Fbd;

    private void Btn_BrowseDirectory_Click(object sender, EventArgs e) =>
        this.FolderBrowserDialog.ShowDialog(this);

    private void InitializeComponent() {
        // initialize...

        // 
        // Btn_BrowseDirectory
        // 
        this.Btn_BrowseDirectory.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
        this.Btn_BrowseDirectory.Location = new System.Drawing.Point(365, 0);
        this.Btn_BrowseDirectory.Margin = new System.Windows.Forms.Padding(3, 0, 0, 0);
        this.Btn_BrowseDirectory.Name = "Btn_BrowseDirectory";
        this.Btn_BrowseDirectory.Size = new System.Drawing.Size(75, 23);
        this.Btn_BrowseDirectory.TabIndex = 9;
        this.Btn_BrowseDirectory.Text = "Browse...";
        this.Btn_BrowseDirectory.UseVisualStyleBackColor = true;
        this.Btn_BrowseDirectory.Click += new System.EventHandler(this.Btn_BrowseDirectory_Click);
        // 
        // Lbl
        // 
        this.Lbl.AutoSize = true;
        this.Lbl.Location = new System.Drawing.Point(-3, 5);
        this.Lbl.Margin = new System.Windows.Forms.Padding(0);
        this.Lbl.Name = "Lbl";
        this.Lbl.Size = new System.Drawing.Size(31, 13);
        this.Lbl.TabIndex = 8;
        this.Lbl.Text = "Text:";
        // 
        // TxtBox_DirectoryFullPath
        // 
        this.TxtBox_DirectoryFullPath.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
        | System.Windows.Forms.AnchorStyles.Right)));
        this.TxtBox_DirectoryFullPath.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.Fbd, "SelectedPath", true));
        this.TxtBox_DirectoryFullPath.Location = new System.Drawing.Point(31, 2);
        this.TxtBox_DirectoryFullPath.Margin = new System.Windows.Forms.Padding(3, 0, 3, 0);
        this.TxtBox_DirectoryFullPath.Name = "TxtBox_DirectoryFullPath";
        this.TxtBox_DirectoryFullPath.Size = new System.Drawing.Size(328, 20);
        this.TxtBox_DirectoryFullPath.TabIndex = 7;

        // initialize...
    }
    // controls fields declerations...
}

表单代码：

class MyForm : Form {
    // other stuff...

    private void InitializeComponent() {
        // initialize...

        // browseFolder1
        // 
        // 
        // browseFolder1.Btn_BrowseDirectory
        // 
        this.browseFolder1.Button_BrowseDirectory.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
        this.browseFolder1.Button_BrowseDirectory.Location = new System.Drawing.Point(365, 0);
        this.browseFolder1.Button_BrowseDirectory.Margin = new System.Windows.Forms.Padding(3, 0, 0, 0);
        this.browseFolder1.Button_BrowseDirectory.Name = "Btn_BrowseDirectory";
        this.browseFolder1.Button_BrowseDirectory.Size = new System.Drawing.Size(75, 23);
        this.browseFolder1.Button_BrowseDirectory.TabIndex = 9;
        this.browseFolder1.Button_BrowseDirectory.Text = "Browse...";
        this.browseFolder1.Button_BrowseDirectory.UseVisualStyleBackColor = true;
        // 
        // browseFolder1.Lbl
        // 
        this.browseFolder1.Label.AutoSize = true;
        this.browseFolder1.Label.Location = new System.Drawing.Point(-3, 5);
        this.browseFolder1.Label.Margin = new System.Windows.Forms.Padding(0);
        this.browseFolder1.Label.Name = "Lbl";
        this.browseFolder1.Label.Size = new System.Drawing.Size(31, 13);
        this.browseFolder1.Label.TabIndex = 8;
        this.browseFolder1.Label.Text = "Text:";
        this.browseFolder1.Location = new System.Drawing.Point(53, 86);
        this.browseFolder1.Margin = new System.Windows.Forms.Padding(3, 1, 3, 1);
        this.browseFolder1.Name = "browseFolder1";
        this.browseFolder1.Size = new System.Drawing.Size(440, 22);
        this.browseFolder1.TabIndex = 8;
        // 
        // browseFolder1.TxtBox_DirectoryFullPath
        // 
        this.browseFolder1.TextBox_DirectoryFullPath.Anchor = ((System.Windows.Forms.AnchorStyles)(((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Left) 
        | System.Windows.Forms.AnchorStyles.Right)));
        this.browseFolder1.TextBox_DirectoryFullPath.DataBindings.Add(new System.Windows.Forms.Binding("Text", this.browseFolder1.FolderBrowserDialog, "SelectedPath", true));
        this.browseFolder1.TextBox_DirectoryFullPath.Location = new System.Drawing.Point(31, 2);
        this.browseFolder1.TextBox_DirectoryFullPath.Margin = new System.Windows.Forms.Padding(3, 0, 3, 0);
        this.browseFolder1.TextBox_DirectoryFullPath.Name = "TxtBox_DirectoryFullPath";
        this.browseFolder1.TextBox_DirectoryFullPath.Size = new System.Drawing.Size(328, 20);
        this.browseFolder1.TextBox_DirectoryFullPath.TabIndex = 7;

        // initialize...
    }
    // controls fields declerations...
}

抛出异常：

Answer 1

您用以下东西装饰了您的 TextBox 属性：

[DesignerSerializationVisibility(DesignerSerializationVisibility.Content)]
public TextBox SomeTextBox { get { return someTextBox; } }

表示SomeTextBox的所有属性值与默认值不同的都会被序列化。

为了解决关于 DataBinding 的问题，为了防止它在表单中被序列化，如果控件不是设计模式，请在您的用户控件中添加数据绑定：

if(LicenseManager.UsageMode != LicenseUsageMode.Designtime)
    someTextBox.DataBindings.Add("Text", SomeOtherControl, "SomeProperty", true);

C# - Windows 使用子控件和数据绑定形成用户控件

C# - Windows Forms User Control with Sub controls and data binding

c#

data-binding

user-controls

winforms