C# Imaging - How to Integrate Web Viewer Control

<link href="RasterEdge_Imaging_Files/RasterEdge.css" rel="stylesheet"type="text/css"/>
<script src="RasterEdge_Imaging_Files/RasterEdge.js" type="text/javascript"></script>
<script src="RasterEdge_Imaging_Files/CreateViewerToolBar.js" type="text/javascript"></script>
  <script type="text/javascript">
    _fid = "<%=fid %>";
    _viewer = new RasterEdgeViewer({
        _serverUrl: "/RasterEdge_Imaging_Files/WebHandler.ashx",
         //0 represent png, 1 represent svg
        _pdfViewer: 1,
        _wordViewer: 1,
        _excelViewer:1,
            
        //Set width and height of the webViewer(pixel)
        _viewerWidth: 1024,
        _viewerHeight: 730,
    });       

//define annotation style
//annotation style
//Color:Hexadecimal color can be used
//Transparency:1 on behalf of saturated, 0 represents completely transparent
//TextStyle:italic/oblique/normal  
TextAnnoStyle = new AnnoStyle({FillColor: "White", ShowedText: "double click to edit", TextColor: "Black", TextFont: "Arial", TextSize: 12, TextStyle :"normal"});
FreehandAnnoStyle = new AnnoStyle({OutLineColor: "Red", OutLineWidth: 5.0});
HighlightAnnoStyle = new AnnoStyle({FillColor: "Yellow"});
RectangleAnnoStyle = new AnnoStyle({OutLineColor: "Black", OutLineWidth: 3.0});
FilledRectangleAnnoStyle = new AnnoStyle({OutLineColor: "Black", OutLineWidth: 3.0, FillColor: "Black", Transparency: 1});
EllipseAnnoStyle = new AnnoStyle({FillColor: "Orange"});
RubberStampAnnoStyle = new AnnoStyle({OutLineColor: "Tomato", OutLineWidth: 3.0, FillColor: "Red", ShowedText: "Good", TextColor: "Black", TextFont: "Arial", TextSize: 12, TextStyle: "Italic"});
PolygonLinesAnnoStyle = new AnnoStyle({OutLineColor: "Red", OutLineWidth: 5.0});
PolygonAnnoStyle = new AnnoStyle({OutLineColor: "OrangeRed", OutLineWidth: 3.0, FillColor: "OrangeRed"});
LineAnnoStyle = new AnnoStyle({OutLineColor: "Red", OutLineWidth: 5.0});
ArrowAnnoStyle = new AnnoStyle({OutLineColor: "Red", OutLineWidth: 5.0, FillColor: "Red",Transparency:0.8});

//Set whether the toolbar shows the corresponding icon(true or false)
//You can set the item including:_toolbar/_fileToolbar/_annoToolbar/_fullToolbar
//_uploadToolbar/_printToolbar/_saveToolbar/_convertToolbar   //_textToolbar/_freehandToolbar/_arrowToolbar/_lineToolbar/_polygonLinesToolbar/_filledRectangleToolbar/_rectangleToolbar/_highlightToolbar/_ellipseToolbar/_polygonToolbar/_rubberStampToolbar/_deleteToolbar
   </script>

public string mode;
public string fid;
protected void Page_Load(object sender, EventArgs e)
{
       string command = Request.Form["RECommand"];
       if (command == null || command.Equals(""))
       {
WorkRegistry.Reset();            
LoadFileFromUrl();
    }
        else if (command.Equals("OpenFile"))
    {
        LoadFileFromUpload();
    }
    else if (command.Equals("SaveFile"))
    {
        SaveFile();
    }
    }

public void LoadFileFromUrl()
    {
    string file = Request.QueryString["file"];
    if (file != null &&file != "")
    {
        file = file.Trim();
        string initFilePath = file;
string projectName = System.Web.HttpContext.Current.Request.PhysicalApplicationPath.Replace("\\", "/");
    string path = projectName + "/RasterEdge_Demo_Docs/" + initFilePath;
    if (File.Exists(path))
    {
        fid = REDocumentControl.GenerateId();
        string result = LoadFile("RasterEdge_Demo_Docs" + initFilePath, fid);
        if (result != "")
            this.RegisterStartupScript("", "<script>alert('" + result + "');</script>");
    }
    }
    }

public void LoadFileFromUpload()
    {
string uploadFile = Request.Form["uploadfile"];
string filename = "/RasterEdge_Cache/" + uploadFile;
fid = Request.Form["Fid"];
string result = LoadFile(filename, fid);
Response.Clear();
Response.Write(result);
Response.End();

//load document from stream
//REDocumentControl.LoadFile(Stream stream, fid);

//load document from array
//REDocumentControl.LoadFile(byte[] array, fid);
    }

public void SaveFile()
    {
string fileName = Request.Form["saveFileName"];
string fid = Request.Form["Fid"];
Response.Clear();
Response.Write(fileName);
Response.End();
    }

private string LoadFile(string filename,string fid)
    {
string result = "";
try
        {
REDocumentControl.LoadFile(filename, fid);
        }
catch (Exceptionex)
        {
result = ex.Message.ToString();
        }
return result;