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The Basic Control
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Collections.Specialized;
namespace test_custom_control
{
/// <summary>
/// Summary description for XmlLeaveViewer.
/// </summary>
public class XmlLeaveViewer : System.Web.UI.WebControls.WebControl, IPostBackDataHandler
{
private TextBox PCDATABox;
private Label TagLabel;
private string _tagName;
private string _pcdata;
[Bindable(true),
Category("Appearance"),
DefaultValue("")]
public string TagType
{
get
{
return _tagName;
}
set
{
_tagName = value;
}
}
public string PCDATA
{
get
{
return _pcdata;
}
set
{
_pcdata = value;
}
}
protected override void CreateChildControls()
{
TagLabel = new Label();
TagLabel.Text = _tagName;
Controls.Add(TagLabel);
PCDATABox = new TextBox();
PCDATABox.Text = _pcdata;
Controls.Add(PCDATABox);
}
/// <summary>
/// Render this control to the output parameter specified.
/// </summary>
/// <param name="output"> The HTML writer to write out to </param>
///
protected override void Render(HtmlTextWriter output)
{
output.Write("<table><tr><td>");
TagLabel.RenderControl(output);
output.Write("</td><td>");
PCDATABox.RenderControl(output);
output.Write("</td></tr></table><BR>");
}
#region IPostBackDataHandler Members
public void RaisePostDataChangedEvent()
{
}
public bool LoadPostData(string postDataKey, NameValueCollection postCollection)
{
_pcdata = postCollection[postDataKey];
return false;
}
#endregion
}
}
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The Main Control
using System;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.ComponentModel;
using System.Collections;
using System.Collections.Specialized;
namespace test_custom_control
{
/// <summary>
/// Summary description for WebCustomControl1.
/// </summary>
[DefaultProperty("Text"),
ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
public class XmlNodeViewer : System.Web.UI.WebControls.WebControl
{
private string _nodeName;
private Hashtable _leaves;
// The porperties
public Hashtable Leaves
{
get{ return _leaves;}
set{ _leaves=value;}
}
public string NodeName
{
get
{
return _nodeName;
}
set
{
_nodeName = value;
}
}
protected override void CreateChildControls()
{
XmlLeaveViewer myViewer;
foreach (DictionaryEntry myDE in _leaves)
{
myViewer = new XmlLeaveViewer();
myViewer.TagType = (string)myDE.Key;
myViewer.PCDATA = (string)myDE.Value;
Controls.Add(myViewer);
_leaveControls.Add(myViewer);
}
}
}
}