关于自定义控件，如何在编辑状态下获取页面控件的ID？

alf7927 2004-03-16 11:21:00

如果各位使用过验证控件，不难发现，验证控件会把当前页面的控件作为枚举型选项
在属性窗口中显示，以备用户选择应用。现在自定写了一个这种控件，要做如此功能，可否给些思路？？比如我做了一个分页控件，在编辑状态下要有提拱选择当前页面被控制的DataGrid功能，请明示。在下不胜感谢。、。。。。

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chinchy 2004-03-17

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累一个字

http://www.asp.net/Forums/ShowPost.aspx?tabindex=1&PostID=212648

alf7927 2004-03-17

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喷血ing........噗..呜~~~~~~~

alf7927 2004-03-17

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up到喷血........

mynewpc 2004-03-16

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定义属性:
Dim _text1 As Control

<Bindable(True), Category("Appearance"), DefaultValue("")> Property [Tdatagrid]() As WebControls.DataGrid
Get
Return _text1
End Get

Set(ByVal Value As WebControls.DataGrid)
_text1 = Value
End Set
End Property

mynewpc 2004-03-16

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Imports System.ComponentModel
Imports System.Web.UI

<DefaultProperty("Text"), ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")> Public Class WebCustomControl1
Inherits System.Web.UI.WebControls.WebControl

Dim _text As String

<Bindable(True), Category("Appearance"), DefaultValue("")> Property [Text]() As String
Get
Return _text
End Get

Set(ByVal Value As String)
_text = Value
End Set
End Property

Dim _text1 As Control

<Bindable(True), Category("Appearance"), DefaultValue(""), ListBindable(True)> Property [Tdatagrid]() As WebControls.DataGrid
Get
Return _text1
End Get

Set(ByVal Value As WebControls.DataGrid)
_text1 = Value
End Set
End Property
Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
output.Write([Text])
End Sub

End Class

chinchy 2004-03-16

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控件：

[
Description("当前的文本框有焦点时按回车触发的按钮"),
TypeConverter(typeof(InvokeControlConverter))
]
public string EnterInvokeControlID
{
get
{
}
set
{
}
}

TypeConverter:

public class InvokeControlConverter : System.ComponentModel.TypeConverter
{
public InvokeControlConverter()
{
}

public override bool GetStandardValuesSupported(ITypeDescriptorContext context)
{
return true;
}

public override StandardValuesCollection GetStandardValues(ITypeDescriptorContext context)
{
System.Collections.ArrayList buttonList=new System.Collections.ArrayList();
foreach(System.ComponentModel.IComponent componet in context.Container.Components)
{
if(componet.GetType().ToString()=="System.Web.UI.WebControls.Button")
{
buttonList.Add(((System.Web.UI.WebControls.Button)componet).ID);
}
}

buttonList.Sort();
return new StandardValuesCollection(buttonList.ToArray());
}

public override bool CanConvertFrom(ITypeDescriptorContext context,Type sourceType)
{
if(sourceType.ToString()=="System.String")
{
return true;
}
else
{
return base.CanConvertFrom(context, sourceType);
}
}

public override object ConvertFrom(ITypeDescriptorContext context,CultureInfo culture,object value)
{
if(value.GetType().ToString()=="System.String")
{
return value;
}
else
{
return base.ConvertFrom(context, culture, value);
}
}

}

alf7927 2004-03-16