如何在c#项目中实现一个winform主题？针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
一个接口，需要做主题的控件、窗体都要实现这个接口
/// <summary> /// 使用主题的控件、窗体需要实现此接口 /// </summary> public interface IThemeControl { ITheme ThisTheme { get; set; } /// <summary> /// 重置主题 /// </summary> void ResetTheme(); }2、一个主题接口
/// <summary> /// 主题 /// </summary> public interface ITheme { int Code { get; } /// <summary> /// 初始化 /// </summary> void Init(); }3、一个主题控制类
/// <summary> /// 主题设置 /// </summary> public class Theme { internal delegate void CheckedThemeEventHandle(ITheme theme); /// <summary> /// 改变主题事件 /// </summary> static internal event CheckedThemeEventHandle CheckedThemeEvent; static ITheme currentTheme; /// <summary> /// 当前主题 /// </summary> internal static ITheme CurrentTheme { get { return currentTheme; } set { if (value == null) return; currentTheme = value; currentTheme.Init(); if (CheckedThemeEvent != null) { CheckedThemeEvent(value); } } } /// <summary> /// 加载控件的主题 /// </summary> /// <param name="control"></param> internal static void LoadTheme(IThemeControl control) { control.ResetTheme(); } }4、添加一个窗体通用的主题接口
public interface IThemeBaseForm { /// <summary> /// 基本窗体背景色 /// </summary> Color BaseFormBackgroundColor { get; } /// <summary> /// 基本窗体文字颜色 /// </summary> Color BaseFormForeColor { get; } /// <summary> /// 标题栏颜色 /// </summary> Color BaseFormTitleColor { get; } }5、添加对应的窗体或控件的主题接口
窗体的样式接口（例子）
public interface IThemeFrmLock : IThemeBaseForm { Color FrmLock_TxtFillColor { get; } Color FrmLock_TxtRectColor { get; } Color FrmLock_TxtForeColor { get; } Color FrmLock_btnFillColor { get; } Color FrmLock_btnForeColor { get; } Color FrmLock_btnRectColor { get; } }控件的样式接口（例子）
public interface IThemeUCFileItem : ITheme { Color UCFileItem_BackgroundColor { get; } Color UCFileItem_ForeColor { get; } Color UCFileItem_BoxColor { get; } Image UCFileItem_Img1 { get; } Image UCFileItem_Img2 { get; } Image UCFileItem_Img3 { get; } Image UCFileItem_Img4 { get; } Image UCFileItem_Img5 { get; } }我这里做一个深色一个浅色主题
深色的
/// <summary> /// 深色 /// </summary> public partial class Dark : ITheme, IThemeBaseForm, IThemeFrmLock, IThemeUCFileItem { public int Code { get { return 1; } } /// <summary> /// 基本窗体背景色 /// </summary> public Color BaseFormBackgroundColor { get { return Color.FromArgb(37, 41, 59); } } /// <summary> /// 基本窗体文字颜色 /// </summary> public Color BaseFormForeColor { get { return Color.White; } } public Color BaseFormTitleColor { get { return Color.FromArgb(38, 45, 67); } } /// <summary> /// 初始化操作 /// </summary> public void Init() { //这里做一些修改主题时候的业务 } #region 重写运算符 /// <summary> /// 重写== /// </summary> /// <param name="lhs"></param> /// <param name="rhs"></param> /// <returns></returns> public static bool operator ==(Dark lhs, ITheme rhs) { if (lhs == null && rhs == null) return true; else { if (lhs != null && rhs != null) { if (lhs.Code == rhs.Code) return true; else return false; } else return false; } } /// <summary> /// 重写!= /// </summary> /// <param name="lhs"></param> /// <param name="rhs"></param> /// <returns></returns> public static bool operator !=(Dark lhs, ITheme rhs) { if (lhs == null && rhs == null) return false; else { if (lhs != null && rhs != null) { if (lhs.Code == rhs.Code) return false; else return true; } else return true; } } public override bool Equals(object obj) { if (obj == null || GetType() != obj.GetType()) { return false; } if (obj is ITheme) { if (Code == ((ITheme)obj).Code) return true; else return false; } else { return false; } } public override int GetHashCode() { return base.GetHashCode(); } #endregion }浅色的也一样 只需要实现
ITheme,
IThemeBaseForm,
IThemeFrmLock,
IThemeUCFileItem
这些接口就行（定义的控件接口，这里都要进行实现）
然后添加具体的控件主题实现类
/// <summary> /// FrmLock /// </summary> public partial class Dark { public Color FrmLock_TxtFillColor { get { return Color.FromArgb(34, 40, 60); } } public Color FrmLock_TxtRectColor { get { return Color.FromArgb(65, 75, 101); } } public Color FrmLock_TxtForeColor { get { return Color.White; } } public Color FrmLock_btnFillColor { get { return Color.FromArgb(46, 54, 76); } } public Color FrmLock_btnForeColor { get { return Color.FromArgb(175, 193, 225); } } public Color FrmLock_btnRectColor { get { return Color.FromArgb(65, 75, 101); } } }然后就是去控件或窗体里面做事情了，实现接口Theme.IThemeControl，构造函数里面添加CheckedThemeEvent事件
public partial class FrmLock : FrmWithTitle,Theme.IThemeControl { public FrmLock() { try { InitializeComponent(); Theme.Theme.CheckedThemeEvent += Theme_CheckedThemeEvent; } catch (Exception ex) { } } void Theme_CheckedThemeEvent(Theme.ITheme theme) { if (this.Visible) { ThisTheme = theme; } }VisibleChanged事件添加内容
private void FrmLock_VisibleChanged(object sender, EventArgs e) { if (Visible) { ThisTheme = Theme.Theme.CurrentTheme; } }实现的接口
Theme.ITheme thisTheme = null; /// <summary> /// 当前页面正在使用的主题 /// </summary> public Theme.ITheme ThisTheme { get { if (thisTheme == null) { ThisTheme = Theme.Theme.CurrentTheme; } return thisTheme; } set { if (thisTheme != value) { thisTheme = value; Theme.Theme.LoadTheme(this); } } } public void ResetTheme() { var t = (Theme.IThemeFrmLock)ThisTheme; this.BackColor = t.BaseFormBackgroundColor; this.lblTitle.BackColor = t.BaseFormTitleColor; this.lblTitle.ForeColor = t.BaseFormForeColor; ucControlBase1.FillColor = t.FrmLock_TxtFillColor; ucControlBase1.RectColor = t.FrmLock_TxtRectColor; txtPW.BackColor = t.FrmLock_TxtFillColor; txtPW.ForeColor = t.FrmLock_TxtForeColor; tongyong_btnPaiZhaoPath.FillColor = t.FrmLock_btnFillColor; tongyong_btnPaiZhaoPath.RectColor = t.FrmLock_btnRectColor; tongyong_btnPaiZhaoPath.ForeColor = t.FrmLock_btnForeColor; }以上就是修改代码，下面看调用
Theme.Theme.CurrentTheme = new Theme.Dark();关于如何在c#项目中实现一个winform主题问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注编程网行业资讯频道了解更多相关知识。
