如何在 .net 表单应用程序的消息框中创建自定义按钮？

Question

我正在尝试在表单应用程序上使用 .NET Compact Framework 3.5 实现自定义消息框（确定、取消）。我如何实现它？

Answer 1

您需要实现自己的自定义表单并使用

访问它

myForm.ShowDialog();

这是DialogBoxes 的指南，您可以关注this guide this guide 来创建自己的对话框。

但如果你只使用确定/取消按钮，MessageBox 有什么问题？

Answer 2

我和一个同事想出了以下类来充当一种动态消息框。

这是设计器代码：

/// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.IContainer components = null;

/// <summary>
/// Clean up any resources being used.
/// </summary>
/// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>
protected override void Dispose(bool disposing)
{
    if (disposing && (components != null))
    {
        components.Dispose();
    }
    base.Dispose(disposing);
}

#region Windows Form Designer generated code

/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
    this.lblMessage = new System.Windows.Forms.Label();
    this.btnRight = new System.Windows.Forms.Button();
    this.btnLeft = new System.Windows.Forms.Button();
    this.SuspendLayout();
    // 
    // lblMessage
    // 
    this.lblMessage.AutoSize = true;
    this.lblMessage.Location = new System.Drawing.Point(12, 39);
    this.lblMessage.Name = "lblMessage";
    this.lblMessage.Size = new System.Drawing.Size(35, 13);
    this.lblMessage.TabIndex = 0;
    this.lblMessage.Text = "label1";
    // 
    // btnRight
    // 
    this.btnRight.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
    this.btnRight.Location = new System.Drawing.Point(89, 73);
    this.btnRight.Name = "btnRight";
    this.btnRight.Size = new System.Drawing.Size(75, 23);
    this.btnRight.TabIndex = 1;
    this.btnRight.UseVisualStyleBackColor = true;
    // 
    // btnLeft
    // 
    this.btnLeft.Anchor = System.Windows.Forms.AnchorStyles.Bottom;
    this.btnLeft.Location = new System.Drawing.Point(8, 73);
    this.btnLeft.Name = "btnLeft";
    this.btnLeft.Size = new System.Drawing.Size(75, 23);
    this.btnLeft.TabIndex = 0;
    this.btnLeft.UseVisualStyleBackColor = true;
    // 
    // CustomMessageBox
    // 
    this.AcceptButton = this.btnLeft;
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.AutoSize = true;
    this.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
    this.ClientSize = new System.Drawing.Size(170, 114);
    this.ControlBox = false;
    this.Controls.Add(this.btnLeft);
    this.Controls.Add(this.btnRight);
    this.Controls.Add(this.lblMessage);
    this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
    this.KeyPreview = true;
    this.MinimumSize = new System.Drawing.Size(176, 120);
    this.Name = "CustomMessageBox";
    this.StartPosition = System.Windows.Forms.FormStartPosition.CenterParent;
    this.Text = "CustomMessageBox";
    this.Load += new System.EventHandler(this.frmCustomMessageBoxLoad);
    this.ResumeLayout(false);
    this.PerformLayout();

}

#endregion

private System.Windows.Forms.Label lblMessage;
private System.Windows.Forms.Button btnRight;
private System.Windows.Forms.Button btnLeft;

这是表单背后的代码：

internal partial class CustomMessageBox : Form
{
    #region Fields

    public readonly MessageBoxButtons _buttons;

    #endregion

    //need to seal properties to override from derived class

    #region Constructors

    /// <summary>
    /// This constructor is required for designer support.
    /// </summary>
    public CustomMessageBox()
    {
        InitializeComponent();
    }

    public CustomMessageBox(string message, string title, MessageBoxButtons buttons)
    {
        InitializeComponent();

        Text = title;
        lblMessage.Text = message;

        _buttons = buttons;
    }

    #endregion

    #region Properties

    public override sealed string Text
    {
        get { return base.Text; }
        set { base.Text = value; }
    }

    #endregion

    #region private

    private void frmCustomMessageBoxLoad(object sender, EventArgs e)
    {
        lblMessage.Left = (ClientSize.Width - lblMessage.Width) / 2;
        switch(_buttons)
        {
            case MessageBoxButtons.OKCancel:
                {
                    btnLeft.Text = @"OK";
                    btnLeft.DialogResult = DialogResult.OK;
                    btnRight.Text = @"Cancel";
                    btnRight.DialogResult = DialogResult.Cancel;
                    AcceptButton = btnLeft;
                    break;
                }
            case MessageBoxButtons.OK:
                {
                    btnLeft.Text = @"OK";
                    btnLeft.DialogResult = DialogResult.OK;
                    btnRight.Hide();
                    btnLeft.Left = (ClientSize.Width - btnLeft.Width) / 2;
                    AcceptButton = btnLeft;
                    break;
                }
            case MessageBoxButtons.YesNo:
                {
                    btnLeft.Text = @"Yes";
                    btnLeft.DialogResult = DialogResult.Yes;
                    btnRight.Text = @"No";
                    btnRight.DialogResult = DialogResult.No;
                    AcceptButton = btnLeft;
                    break;
                }
            default :
                {
                    btnLeft.Hide();
                    btnRight.Hide();
                    break;
                }
        }
        AcceptButton = btnLeft;
    }

    #endregion
}

Answer 3

如果您想要一个带有确定和取消按钮的消息框，您可以使用

 MessageBox.Show(this, "Message", "caption", MessageBoxButtons.OKCancel);

如果您想要自定义外观/感觉和任何您通常不会在消息框上看到的按钮，那么您必须制作自己的表单来显示

MessageBoxButton options