c# - WinForms AcceptButton无法正常工作吗？

好的，这困扰着我，我只是想不出什么错...

我做了两种形式。第一个表单上只有一个简单的按钮，它将另一个打开为对话框，如下所示:

using (Form2 f = new Form2())
{
    if (f.ShowDialog() != DialogResult.OK)
        MessageBox.Show("Not OK");
    else
        MessageBox.Show("OK");
}

第二个是Form2，上面有两个按钮。我要做的就是将窗体AcceptButton设置为一个，并将CancelButton设置为另一个。在我看来，这是完成这项工作所需要的。但是，当我运行它时，我单击了打开Form2的按钮。现在，我可以单击一个设置为CancelButton的按钮，然后出现“Not OK”消息框。但是，当我单击一个设置为AcceptButton时，什么都没有发生？
Form2的InitializeComponent代码如下所示:

private void InitializeComponent()
{
    this.button1 = new System.Windows.Forms.Button();
    this.button2 = new System.Windows.Forms.Button();
    this.SuspendLayout();
    //
    // button1
    //
    this.button1.Location = new System.Drawing.Point(211, 13);
    this.button1.Name = "button1";
    this.button1.Size = new System.Drawing.Size(75, 23);
    this.button1.TabIndex = 0;
    this.button1.Text = "button1";
    this.button1.UseVisualStyleBackColor = true;
    //
    // button2
    //
    this.button2.DialogResult = System.Windows.Forms.DialogResult.Cancel;
    this.button2.Location = new System.Drawing.Point(130, 13);
    this.button2.Name = "button2";
    this.button2.Size = new System.Drawing.Size(75, 23);
    this.button2.TabIndex = 1;
    this.button2.Text = "button2";
    this.button2.UseVisualStyleBackColor = true;
    //
    // Form2
    //
    this.AcceptButton = this.button1;
    this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
    this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
    this.CancelButton = this.button2;
    this.ClientSize = new System.Drawing.Size(298, 59);
    this.Controls.Add(this.button2);
    this.Controls.Add(this.button1);
    this.Name = "Form2";
    this.Text = "Form2";
    this.Load += new System.EventHandler(this.Form2_Load);
    this.ResumeLayout(false);
}

除了添加这两个按钮并设置AcceptButton和CancelButton外，我什么也没做。为什么不起作用？

最佳答案

仅设置AcceptButton/CancelButton是不够的。这只是告诉应该在Enter/Esc上调用哪个按钮。您必须在Button处理程序中设置DialogResult。