如何去掉TabControl控件默认添加的TabPage

如题所述

把TabControl添加到设计器的时候,默认会添加两个TabPage,当继承TabControl自定义控件的时候,这两个默认的TabPage常常会制造一些麻烦,今天我来介绍一种方法来去掉这两个默认的TabPage:
实际上思路比较简单,主要是通过ToolboxItem特性提供自定义的ToolboxItem类来修改工具箱中的控件的初始化工程,只需要继承ToolboxItem类,重写CreateComponentsCore方法就可以实现了:
[ToolboxItem(typeof(DemoToolboxItem))]
public class MyTabControl : TabControl
{
}

[Serializable] //ToolboxItem必须是可序列化的
class DemoToolboxItem : ToolboxItem
{
// The add components dialog in VS looks for a public
// ctor that takes a type.
public DemoToolboxItem(Type toolType)
: base(toolType)
{
}

// And you must provide this special constructor for serialization.
// If you add additional data to MyToolboxItem that you
// want to serialize, you may override Deserialize and
// Serialize methods to add that data.
DemoToolboxItem(SerializationInfo info, StreamingContext context)
{
Deserialize(info, context);
}

// This implementation sets the new control's Text and
// AutoSize properties.
protected override IComponent[] CreateComponentsCore(
IDesignerHost host,
IDictionary defaultValues)
{

IComponent[] comPS = base.CreateComponentsCore(host, defaultValues);

MessageBox.Show(((MyTabControl)comps[0]).TabPages.Count.ToString());
((MyTabControl)comps[0]).TabPages.RemoveAt(0);//去掉默认添加的TabPage
((MyTabControl)comps[0]).TabPages.RemoveAt(0);
return comps;
}
}
当然,如果愿意的话,也可以自己在CreateComponentsCore中添加自定义的TabPage来使我们的TabControl更加的有实用价值
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第1个回答  2013-11-06
实际上思路比较简单,主要是通过ToolboxItem特性提供自定义的ToolboxItem类来修改工具箱中的控件的初始化工程,只需要继承ToolboxItem类,重写CreateComponentsCore方法就可以实现了:[ToolboxItem(typeof(DemoToolboxItem))]public class MyTabControl : TabControl{}[Serializable] //ToolboxItem必须是可序列化的class DemoToolboxItem : ToolboxItem{// The add components dialog in VS looks for a public// ctor that takes a type.public DemoToolboxItem(Type toolType): base(toolType){}// And you must provide this special constructor for serialization.// If you add additional data to MyToolboxItem that you// want to serialize, you may override Deserialize and// Serialize methods to add that data.DemoToolboxItem(SerializationInfo info, StreamingContext context){Deserialize(info, context);}// This implementation sets the new control's Text and// AutoSize properties.protected override IComponent[] CreateComponentsCore(IDesignerHost host,IDictionary defaultValues){IComponent[] comps = base.CreateComponentsCore(host, defaultValues);MessageBox.Show(((MyTabControl)comps[0]).TabPages.Count.ToString());((MyTabControl)comps[0]).TabPages.RemoveAt(0);//去掉默认添加的TabPage本回答被提问者采纳
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