处理主题的一种方法如下。

**步骤1：**您可以有一个单独的class文件，其中包含需要更改的主题颜色。

public static class CustomColorTheme
{
    public static string BackColor = "#000000";
    public static string ForeColor = "#FFFFFF";
}

**步骤2：**在Form初始化或加载时，您可以获取Form中的所有Controls，并从Theme类相应地设置其颜色

public Form1()
 {
      InitializeComponent();

      //Set Form Back Color and Fore Color
      this.BackColor = ColorTranslator.FromHtml(CustomColorTheme.BackColor);
      this.ForeColor = ColorTranslator.FromHtml(CustomColorTheme.ForeColor);

      //Get all Controls in the Form
      foreach (Control c in this.Controls)
      {
         UpdateColorControls(c);
      }
    }

    //Set Theme color for all Controls in the Form
    public void UpdateColorControls(Control myControl)
    {
        myControl.BackColor = ColorTranslator.FromHtml(CustomColorTheme.BackColor);
        myControl.ForeColor = ColorTranslator.FromHtml(CustomColorTheme.ForeColor);
        foreach (Control subC in myControl.Controls)
        {
            UpdateColorControls(subC);
        }
    }

输出：