Csharp:user WebControl Read Adobe PDF Files In Your Web Browser

namespace GeovinDu.PdfViewer
{
[DefaultProperty("FilePath")]
[ToolboxData("<{0}:ShowPdf runat=server></{0}:ShowPdf>")]
public class ShowPdf : WebControl
{

#region "Declarations"
//Geovin Du 塗聚文 20131010
private string mFilePath;

#endregion

#region "Properties"

[Category("Source File")]
[Browsable(true)]
[Description("Set path to source file.")]
[Editor(typeof(System.Web.UI.Design.UrlEditor), typeof(System.Drawing.Design.UITypeEditor))]
public string FilePath
{
get
{
return mFilePath;
}
set
{
if (value == string.Empty)
{
mFilePath = string.Empty;
}
else
{
int tilde = -1;
tilde = value.IndexOf('~');
if (tilde != -1)
{
mFilePath = value.Substring((tilde + 2)).Trim();
}
else
{
mFilePath = value;
}
}
}
}   // end FilePath property

#endregion

#region "Rendering"
/// <summary>
///  Geovin Du 塗聚文 20131010
/// </summary>
/// <param name="writer"></param>
protected override void RenderContents(HtmlTextWriter writer)
{
try
{
StringBuilder sb = new StringBuilder();
sb.Append("<iframe src=" + FilePath.ToString() + " ");
sb.Append("width=" + Width.ToString() + " height=" + Height.ToString() + " ");
sb.Append("<View PDF: <a href=" + FilePath.ToString() + "</a></p> ");
sb.Append("</iframe>");

writer.RenderBeginTag(HtmlTextWriterTag.Div);
writer.Write(sb.ToString());
writer.RenderEndTag();
}
catch
{
// with no properties set, this will render "Display PDF Control" in a
// a box on the page
writer.RenderBeginTag(HtmlTextWriterTag.Div);
writer.Write("Display PDF Control");
writer.RenderEndTag();
}  // end try-catch
}   // end RenderContents

#endregion

}   // end class
}       // end namespace  Geovin Du 塗聚文 20131010