自动格式设置2
一.智能标记
先看一张图.

GridView右侧的小三角可以很轻松的帮助我们设置常用的属性,如下面的启动分页,启用排序等,通过这样的方式我们可以很快的完成工作。我们称这样的任务菜单为智能标记.
下面来看看如何实现
1.重写ControlDesigner的ActionLists属性
你必须重写这个属性,返回你自定义的智能标记集合(即DesignerActionListCollection),这里假设CustomControlActionList为自定义的智能
public class SampleControlDesigner : ControlDesigner
{
public SampleControlDesigner()
: base()
{
}
//创建一个自定义操作列表集合
public override DesignerActionListCollection ActionLists
{
get
{
DesignerActionListCollection actionLists = new DesignerActionListCollection();
actionLists.Add(new CustomControlActionList(this));
return actionLists;
}
}
}
2.1项列表分类
(1)标题面板
(2)属性面板
(3)方法面板
类图如下

看个效果图,你就明白怎么回事了

2.2实现
(1)继承DesignerActionList类,重写GetSortedActionItems方法添加自定义项面板集合,即2.1的三种项面板
public override DesignerActionItemCollection GetSortedActionItems()
{
if (items == null)
{
items = new DesignerActionItemCollection();
// 添加标题面板
items.Add(new DesignerActionHeaderItem("快速设置面板测试:"));
//添加属性相关面板
items.Add(new DesignerActionPropertyItem("Visible",
"是否显示"));
items.Add(new DesignerActionPropertyItem("Width",
"设置宽度"));
items.Add(new DesignerActionPropertyItem("Height",
"设置高度"));
// 添加方法相关面板
items.Add(new DesignerActionMethodItem(this, "FormatBlue", "定义背景为蓝色", true));
items.Add(new DesignerActionMethodItem(this, "FormatRed", "定义背景为红色", true));
items.Add(new DesignerActionMethodItem(this, "FormatWhite", "定义背景为白色", true));
}
return items;
}
如果你设置属性的话,则必须在CustomControlActionList定义属性,方法也相同,代码如下
#region 自定义方法
public void FormatBlue()
{
SampleControl ctrl = (SampleControl)_parent.Component;
TransactedChangeCallback toCall = new TransactedChangeCallback(DoFormat);
ControlDesigner.InvokeTransactedChange(ctrl, toCall, "FormatBlue", "FormatBlue");
}
public void FormatRed()
{
SampleControl ctrl = (SampleControl)_parent.Component;
TransactedChangeCallback toCall = new TransactedChangeCallback(DoFormat);
ControlDesigner.InvokeTransactedChange(ctrl, toCall, "FormatRed", "FormatRed");
}
public void FormatWhite()
{
SampleControl ctrl = (SampleControl)_parent.Component;
//定义委托
TransactedChangeCallback toCall = new TransactedChangeCallback(DoFormat);
ControlDesigner.InvokeTransactedChange(ctrl, toCall, "FormatWhite", "FormatWhite");
}
#endregion
#region 自定义属性
public bool Visible
{
get
{
SampleControl ctrl = (SampleControl)_parent.Component;
return ctrl.Visible;
}
set
{
PropertyDescriptor propDesc = TypeDescriptor.GetProperties(_parent.Component)["Visible"];
propDesc.SetValue(_parent.Component, value);
}
}
public Unit Width
{
get
{
SampleControl ctrl = (SampleControl)_parent.Component;
return ctrl.Width;
}
set
{
PropertyDescriptor propDesc = TypeDescriptor.GetProperties(_parent.Component)["Width"];
propDesc.SetValue(_parent.Component, value);
}
}
public Unit Height
{
get
{
SampleControl ctrl = (SampleControl)_parent.Component;
return ctrl.Height;
}
set
{
PropertyDescriptor propDesc = TypeDescriptor.GetProperties(_parent.Component)["Height"];
propDesc.SetValue(_parent.Component, value);
}
}
#endregion
public bool DoFormat(object arg)
{
SampleControl ctl = (SampleControl)_parent.Component;
string fmt = (string)arg;
PropertyDescriptor backColorProp = TypeDescriptor.GetProperties(ctl)["BackColor"];
switch (fmt)
{
case "FormatBlue":
backColorProp.SetValue(ctl, Color.Blue);
break;
case "FormatRed":
backColorProp.SetValue(ctl, Color.Red);
break;
case "FormatWhite":
backColorProp.SetValue(ctl, Color.White);
break;
}
//刷新设计时html标记
_parent.UpdateDesignTimeHtml();
return true;
}
[DesignerAttribute(typeof(SampleControlDesigner))]
上面的模板编辑界面相信大家都很熟悉吧.设置支持怎么少的了模板呢.设置时模板编辑实现比较简单,下面来看下如何实现
这里自定义的模板控件不再列出
1.重写ControlDesigner类的TemplateGroups返回自定义模板组集合即(TemplateGroupCollection)
添加步骤跟表格的添加类似,td add tr然后table add td
模板则是TemplateGroup add TemplateDefinition 然后TemplateGroupCollection add TemplateGroup
代码如下
public override TemplateGroupCollection TemplateGroups
{
get
{
if (col == null)
{
col = base.TemplateGroups;
TemplateGroup tempGroup;
TemplateDefinition tempDef;
TemplateGroupsSample ctl;
ctl = (TemplateGroupsSample)Component;
// 创建模板分组一
tempGroup = new TemplateGroup("模板A组");
//提供在设置时编辑模板
tempDef = new TemplateDefinition(this, "Template A1",
ctl, "Template1", false);
tempGroup.AddTemplateDefinition(tempDef);
tempDef = new TemplateDefinition(this, "Template A2",
ctl, "Template2", false);
tempGroup.AddTemplateDefinition(tempDef);
col.Add(tempGroup);
// 创建模板分组二
tempGroup = new TemplateGroup("模板B组");
tempDef = new TemplateDefinition(this, "Template B1",
ctl, "Template3", true);
tempGroup.AddTemplateDefinition(tempDef);
tempDef = new TemplateDefinition(this, "Template B2",
ctl, "Template4", true);
tempGroup.AddTemplateDefinition(tempDef);
col.Add(tempGroup);
}
return col;
}
}
2.初始化启用设计时模板编辑
我们还需要在Initialize方法中调用SetViewFlags方法启用设计时模板编辑
public override void Initialize(IComponent component)
{
base.Initialize(component);
SetViewFlags(ViewFlags.TemplateEditing, true);
}
如下图,DataList默认情况下给予如下提示

我们可以通过重写GetDesignTimeHtml方法调用CreatePlaceHolderDesignTimeHtml方法创建一个矩形标识符来实现
public override string GetDesignTimeHtml()
{
return CreatePlaceHolderDesignTimeHtml("右击或选择编辑模板面板来编辑模板内容");
}
先写到这里,估计大家也不会可以留意这方面的东西,平时大家都太忙了,上面功能有跟没有没多大关系,不过常用控件属性和功能,有设计时支持一定会让使用的更加有效. 明天继续写
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