玩转控件:封装Dev的LabelControl和TextEdit
[Stephen-kzx] 人气:1俗话说的好:"工欲善其事必先利其器",作为软件攻城狮也是同样道理,攻城狮开发的软件目的是简化客户的操作,让客户动动手指就可以完成很多事情,减少人力成本。这也是系统/软件存在的目的。那对于攻城狮来说怎么简化自己的操作?让自己也动动手指就可以减少很多重复的工作呢?如果你对此也有同样的疑问或兴趣,那就跟作者一起看下去吧!
说到利器,自然而然的会想到宇宙第一IDE——Visual Studio 随着版本的迭代,大大的加快了攻城狮的编码效率。那对于我们自己开发的软件,如何减少重复操作,加快软件进度呢?这就是作者今日的主题——封装控件。
作者几年前有幸作为公司代表,到金蝶总部参观,并学习当年金蝶最新科技——K3 Cloud,说实话,作者当年年轻气盛,和普遍技术开发一样,心高气傲,对除自己研发以外的软件不屑一顾,觉得自己才是最流P的!现在好了,善恶终有报,轮到自己爬着学习K3 Cloud的控件封装来造轮子了...
想当年,金戈铁马,气吞万里如虎!....现如今,想起来都是泪...
扯远了,还是回到本篇的主题造轮子...哦,不!玩转控件!封装自己的插件吧!
今天作者主要介绍的是,封装Dev的LabelControl和TextEdit。原因很简单,说的好听就是简化自己重复操作,封装前,拖控件大法,先拖一个LabelControl ,完善它的属性。在拖一个TextEdit,完善它的属性,必要时还要完善它的控件。你以为现在就完了吗?不对,还要拖动一下,看看上下左右的对齐效果....emmmmm~
Talk is Cheap,Show me the Code!
首先我们先新建一个用户控件,继承UserControl,为了减少冗余代码,作者把命名为BaseControl,后续所有用户控件全部继承此类。
public partial class KzxBaseControl : System.Windows.Forms.UserControl,IControl
其中IControl接口主要用来声明,控件的一些属性和事件,部分代码如下(代码篇幅较长,有需要公众号call我,源码免费赠送):
/// <summary> /// 控件事件委托 /// </summary> /// <param name="sender">事件发起者</param> /// <param name="e">事件参数</param> public delegate void KzxControlOperateEventHandler(object sender, ControlEventArgs e); /// <summary> /// 获取多语言文本事件委托 /// </summary> /// <param name="sender">事件发起者</param> /// <param name="messageCode">语言标识</param> /// <param name="text">多语言的文本</param> public delegate void KzxGetLanguageEventHandler(object sender, string messageCode, ref string text); public interface IControl { /// <summary> /// 有Load方法 /// </summary> bool HasLoad { get; } /// <summary> /// 被引用后允许修改 /// true允许,false不允许 /// </summary> bool AllowEdit { get; set; } /// <summary> /// 多语言环境下显示文本的对应标识 /// </summary> string MessageCode { get; set; } /// <summary> /// 设计时的显示,方便设计员工识别 /// </summary> string DesigeCaption { get; set; } /// <summary> /// 控件的唯一标识 /// </summary> string Key { get; set; } /// <summary> /// True控件可用,False控件不可用 /// </summary> Boolean Enabled { get; set; } /// <summary> /// True控件可见,False控件不可见 /// </summary> Boolean Visible { get; set; } /// <summary> /// Tag标志,用于存储任何数据 /// </summary> object Tag { get; set; } /// <summary> /// 设计时的可用性 /// </summary> Boolean DesigeEnabled { get; set; } ... ...
用户控件父类,主要集中所有用户控件的通用属性、方法和事件,部分代码如下:
private bool _AllowEdit = true; /// <summary> /// 被引用后允许修改 /// true允许,false不允许 /// </summary> [Category("验证"), Description("AllowEdit,被引用后允许修改,true允许,false不允许"), Browsable(true)] [McDisplayName("AllowEdit")] public virtual bool AllowEdit { get { return this._AllowEdit; } set { this._AllowEdit = value; } } private string _MessageCode = "0"; /// <summary> /// 多语言环境下显示文本的对应标识 /// </summary> [Category("多语言"), Description("MessageCode,多语言环境下显示文本的对应标识"), Browsable(true)] [McDisplayName("MessageCode")] public virtual string MessageCode { get { return this._MessageCode; } set { this._MessageCode = value; } } private string _DesigeCaption = "显示标题"; /// <summary> /// 没有多语言的情况下的默认显示标题 /// </summary> [Category("多语言"), Description("DesigeCaption,没有多语言的情况下的默认显示标题"), Browsable(true)] [McDisplayName("DesigeCaption")] public virtual string DesigeCaption { get { return this._DesigeCaption; } set { this._DesigeCaption = value; } } private string _Key = string.Empty; /// <summary> /// 控件的唯一标识 /// </summary> [Category("数据"), Description("Key,控件的唯一标识"), Browsable(true)] [McDisplayName("Key")] public virtual string Key { get { if (string.IsNullOrWhiteSpace(this._Key) == true) { if (string.IsNullOrWhiteSpace(this.Table) == false && string.IsNullOrWhiteSpace(this.Field) == false) { this._Key = this.Table + "." + this.Field; } else if (string.IsNullOrWhiteSpace(this.Table) == false) { this._Key = this.Table; } } if (string.IsNullOrEmpty(this._Key)) return this.Name; return this._Key; } set { this._Key = value; } } private bool _DesigeEnabled = true; /// <summary> /// 设计时的可用性 /// </summary> [Category("特性"), Description("DesigeEnabled,设计时的可用性"), Browsable(true)] [McDisplayName("DesigeEnabled")] public virtual bool DesigeEnabled { get { return this._DesigeEnabled; } set { this._DesigeEnabled = value; //this.Enabled = value; } } private bool _DesigeVisible = true; /// <summary> /// 设计时可见性 /// </summary> [Category("特性"), Description("DesigeVisible,设计时可见性"), Browsable(true)] [McDisplayName("DesigeVisible")] public virtual bool DesigeVisible { get { return this._DesigeVisible; } set { this._DesigeVisible = value; //this.Visible = value; if (this.DesignMode == true) { if (value == false) { this.BorderStyle = BorderStyle.Fixed3D; } else { this.BorderStyle = BorderStyle.None; } } else { //this.Visible = value; } } }
/// <summary> /// 触发控件事件 /// </summary> /// <param name="sender">事件发起者</param> /// <param name="eventName">事件名称</param> /// <param name="e">事件参数</param> protected virtual void RaiseEvent(object sender, string eventName, object e) { ControlEventArgs args = new ControlEventArgs(); args.CurrentControl = sender; args.EventId = eventName; args.SystemEventArgs = e; args.FieldName = this.Field; args.TableName = this.Table; args.Key = this.Key; if (this.KzxControlOperate != null) { this.KzxControlOperate(this, args); e = args.SystemEventArgs; } } private static MethodInfo _methodInfo = null; /// <summary> /// 获取多语言文本 /// </summary> /// <param name="messageCode">语言文本标识</param> /// <param name="defaultMessage">默认的文本</param> /// <returns>取到的文本</returns> protected virtual string GetLanguage(string messageCode, string defaultMessage) { string text = string.Empty; try { text = defaultMessage; string filepath = System.IO.Path.Combine(AppDomain.CurrentDomain.SetupInformation.ApplicationBase, "KzxCommon.dll"); Assembly assembly = null; object obj = null; Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies(); for (int i = 0; i < assemblies.Length; i++) { if (assemblies[i].GetName().Name.Equals("KzxCommon", StringComparison.OrdinalIgnoreCase) == true) { assembly = assemblies[i]; break; } } if (assembly == null) { assembly = Assembly.LoadFrom(filepath); } obj = assembly.CreateInstance("KzxCommon.sysClass"); text = defaultMessage; if (_methodInfo == null) { if (obj != null) { _methodInfo = obj.GetType().GetMethod("ssLoadMsg", BindingFlags.Static | BindingFlags.Public | BindingFlags.NonPublic); if (_methodInfo != null) { text = _methodInfo.Invoke(obj, new object[] { messageCode }).ToString(); } } } else { text = _methodInfo.Invoke(obj, new object[] { messageCode }).ToString(); } } catch (Exception ex) { } return string.IsNullOrWhiteSpace(text) == true ? defaultMessage : text; } protected virtual void OnKzxBaseControlLoad() { object obj = null; PropertyInfo pi = null; for (int i = 0; i < this.Controls.Count; i++) { if (this.Controls[i].Name.Equals("ValueControl", StringComparison.OrdinalIgnoreCase) == true) { pi = this.Controls[i].GetType().GetProperty("ErrorIconAlignment"); if (pi != null) { pi.SetValue(this.Controls[i], ErrorIconAlignment.TopRight, null); } } } } protected override void OnControlAdded(System.Windows.Forms.ControlEventArgs e) { base.OnControlAdded(e); OnKzxBaseControlLoad(); SetAppearance(); }
介绍完基类,我们新建在新建要给用户控件来继承它,并实现业务需求:
/// <summary> /// 文本框验证 /// </summary> [ToolboxBitmapAttribute(typeof(Bitmap), "文本框")] public partial class KzxTextBox : KzxBaseControl
布局方面,应自己要求,气运丹田,使出拖控件大法!
此处无需做任何属性、事件设置。只需把我们日常常用到的属性、事件,用特性标记起来即可。部分代码如下:
private DevExpress.XtraEditors.Controls.BorderStyles _BorderStyle = DevExpress.XtraEditors.Controls.BorderStyles.Default; /// <summary> /// 边框显示格式 /// </summary> [Category("数据格式"), Description("KzxBorderStyle,边框显示格式"), Browsable(true)] [McDisplayName("KzxBorderStyle")] public override DevExpress.XtraEditors.Controls.BorderStyles KzxBorderStyle { get { return this.ValueControl.Properties.BorderStyle; } set { this._BorderStyle = value; this.ValueControl.Properties.BorderStyle = value; } } /// <summary> /// 没有多语言的情况下的默认显示标题 /// </summary> [Category("多语言"), Description("DesigeCaption,没有多语言的情况下的默认显示标题"), Browsable(true)] [McDisplayName("DesigeCaption")] public override string DesigeCaption { get { return this.CaptionControl.Text.Trim(); } set { this.CaptionControl.Text = value; } } private bool _IsNull = true; /// <summary> /// 可空性 /// </summary> [Category("验证"), Description("IsNull,可空性"), Browsable(true)] [McDisplayName("IsNull")] public override bool IsNull { get { SetBackColor(); return this._IsNull; } set { this._IsNull = value; SetBackColor(); } } /// <summary> /// 只读性 /// </summary> [Category("验证"), Description("ReadOnly,只读性"), Browsable(true)] [McDisplayName("ReadOnly")] public override bool ReadOnly { get { SetBackColor(); return this.ValueControl.Properties.ReadOnly; } set { this.ValueControl.Properties.ReadOnly = value; SetBackColor(); if (value == false) { this.ValueControl.BackColor = Color.White; } } } private int maxLength = 0; /// <summary> /// 可录入的最大长度 /// </summary> [Category("验证"), Description("MaxLength,可录入的最大长度"), Browsable(true)] [McDisplayName("MaxLength")] public override int MaxLength { get { return maxLength; } set { maxLength = value; } } private Int32 _CaptionLabelWidth = 75; /// <summary> /// 显示标题宽度 /// </summary> [Category("外观"), Description("CaptionLabelWidth,显示标题宽度"), Browsable(true)] [McDisplayName("CaptionLabelWidth")] public Int32 CaptionLabelWidth { get { return this.CaptionControl.Width; } set { this._CaptionLabelWidth = value; this.CaptionControl.Width = value; } } private string toolTipMaxLengthText = string.Empty; /// <summary> /// 数据长度不能超过数据库长度提示文本 /// </summary> public override string ToolTipMaxLengthText { get { return toolTipMaxLengthText; } set { toolTipMaxLengthText = value; } } /// <summary> /// 提示信息 /// </summary> [Category("汽泡提示"), Description("ToolTipText,提示信息"), Browsable(true)] [McDisplayName("ToolTipText")] public override string ToolTipText { get { return (ValueControl == null) == true ? string.Empty : ValueControl.ToolTip; } set { if (ValueControl != null) { ValueControl.ToolTip = value; } if (CaptionControl != null) { CaptionControl.ToolTip = value; } } } private string _ToolTipMessageCode = string.Empty; /// <summary> /// 提示多语言标识 /// </summary> [Category("汽泡提示"), Description("ToolTipMessageCode,提示信息多语言标识"), Browsable(true)] [McDisplayName("ToolTipMessageCode")] public override string ToolTipMessageCode { get { return this._ToolTipMessageCode; } set { this._ToolTipMessageCode = value; } }
一起看看用户控件效果以及封装的属性事件:
F5看看运行效果:
Done! 一个控件,减少一半操作量! 在此,本控件当作作者抛砖引玉,看官们可以根据自己实际情况进行数据封装。有效的封装,避免画蛇添足哦~
最后,由于后续所有重写/重绘控件都在同一个项目使用,而且Dev系统引用文件较多,压缩后源码文件仍然很大,如果有需要源码的朋友,可以微信公众号联系博主,源码可以免费赠予~!有疑问的也可以CALL我一起探讨,最最后,如果觉得本篇博文对您或者身边朋友有帮助的,麻烦点个关注!赠人玫瑰,手留余香,您的支持就是我写作最大的动力,感谢您的关注,期待和您一起探讨!再会!
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