C# Windows 窗体类型转换错误

Question

现在，我正在根据教科书学习 C#。在我目前遇到的 Windows 窗体这一章中的一个示例中，我被指示输入以下代码来创建一个简单的窗口:

namespace WinForms {

using System;
using System.Drawing;
using System.ComponentModel;
using System.Windows.Forms;

public class HelloWindowsForms : System.Windows.Forms.Form
{
    private System.Windows.Forms.Label label1;

    public HelloWindowsForms()
    {
        this.label1 = new System.Windows.Forms.Label();

        label1.Location = new System.Drawing.Point(8,8);
        label1.Text = "Hello Windows Forms!";
        label1.Size = new System.Drawing.Size(408,48);
        label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 24f);
        label1.TabIndex = 0;
        label1.TextAlign = System.Windows.Forms.HorizontalAlignment.Center; //this is the problem

        this.Text = "Hello World";
        this.MaximizeBox = false;
        this.AutoScaleBaseSize = new System.Drawing.Size(5,13);
        this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
        this.MinimizeBox = false;
        this.ClientSize = new System.Drawing.Size(426,55);
        this.Controls.Add(label1);
    }

    public static void Main(string[] args)
    {
        Application.Run(new HelloWindowsForms());
    }
    }
}

在问题行(在单行注释中指定)运行此程序时出现此错误:

Cannot implicitly convert type 'System.Windows.Forms.HorizontalAlignment' to 'System.Drawing.ContentAlignment'. An explicit conversion exists (are you missing a cast?) (CS0266)

其他在线消息来源说我需要转换，但我不知道转换什么或将其转换成什么。我尝试跳过并完成本章，但在尝试完成所有示例时出现类似的 Cannot implicitly convert type 错误。有人可以帮我弄清楚如何解决这个问题吗？

Answer 1

您使用了错误的枚举。当 TextAlign 属性调用 System.Drawing.ContentAlignment 枚举时，您正在使用 System.Windows.Forms.Horizo​​ntalAlignment 枚举。试试这个:

label1.TextAlign = System.Drawing.ContentAlignment.MiddleCenter;