WebImageViewer Class

public class WebImageViewer : WebViewerControl

Public Class WebImageViewer
	Inherits WebViewerControl

namespace WebControlsExamples
{
    public class UploadExample : System.Web.UI.Page
    {
        protected Atalasoft.Imaging.WebControls.WebImageViewer WebImageViewer1;
        protected System.Web.UI.WebControls.Button Button1;
        protected System.Web.UI.WebControls.Label Label1;
        protected System.Web.UI.HtmlControls.HtmlInputFile File1;

        private void Page_Load(object sender, System.EventArgs e)
        {
            // Put user code to initialize the page here
        }

        #region Web Form Designer generated code
        override protected void OnInit(EventArgs e)
        {
            // 
            // CODEGEN: This call is required by the ASP.NET Web Form Designer.
            // 
            InitializeComponent();
            base.OnInit(e);
        }

        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {    
            this.Button1.Click += new System.EventHandler(this.Button1_Click);
            this.Load += new System.EventHandler(this.Page_Load);
        }
        #endregion

        private void Button1_Click(object sender, System.EventArgs e)
        {
            if (File1.PostedFile.FileName.Length != 0) 
            {    // Get the relative server path to the Cache
                string pathToCache = Page.MapPath(System.Configuration.ConfigurationSettings.AppSettings["AtalasoftWebControls_Cache"]);

                // We prefix the file name with the Page.Session.SessionID so
                // that the CacheManager will delete it when the session expires
                string pathToFile = pathToCache + Page.Session.SessionID + "_" + System.IO.Path.GetFileName(File1.PostedFile.FileName);

                try
                {    // Save uploaded file to server cache.
                    File1.PostedFile.SaveAs(pathToFile);
                }
                catch (Exception exc) 
                {    // Sends errors to a label
                    Label1.Text = "Error saving file <b>" + pathToFile + "</b><br>" + exc.Message;
                }

                try
                {    // Load the image in the WebImageViewer
                    WebImageViewer1.Open(pathToFile);
                }
                catch (Exception exc) 
                {    // Sends errors to a label
                    Label1.Text = "Error opening file <b>" + pathToFile + "</b><br>" + exc.Message;
                }
            }
            else
                Label1.Text = "Error: You must specify a file name.";
        }
    }
}

Public Class UploadExample
    Inherits System.Web.UI.Page
    Protected WithEvents WebImageViewer1 As Atalasoft.Imaging.WebControls.WebImageViewer
    Protected WithEvents Button1 As System.Web.UI.WebControls.Button
    Protected WithEvents Label1 As System.Web.UI.WebControls.Label
    Protected WithEvents File1 As System.Web.UI.HtmlControls.HtmlInputFile

#Region " Web Form Designer Generated Code "

    'This call is required by the Web Form Designer.
    <System.Diagnostics.DebuggerStepThrough()> Private Sub InitializeComponent()

    End Sub

    Private Sub Page_Init(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Init
        'CODEGEN: This method call is required by the Web Form Designer
        'Do not modify it using the code editor.
        InitializeComponent()
    End Sub

#End Region

    Private Sub Page_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        'Put user code to initialize the page here
    End Sub

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        If File1.PostedFile.FileName.Length <> 0 Then
            ' Get the relative server path to the Cache
            Dim pathToCache As String = Page.MapPath(System.Configuration.ConfigurationSettings.AppSettings("AtalasoftWebControls_Cache"))

            ' We prefix the file name with the Page.Session.SessionID so
            ' that the CacheManager will delete it when the session expires
            Dim pathToFile As String = pathToCache + Page.Session.SessionID + "_" + System.IO.Path.GetFileName(File1.PostedFile.FileName)

            Try
                ' Save uploaded file to server cache.
                File1.PostedFile.SaveAs(pathToFile)
            Catch exc As Exception
                ' Sends errors to a label
                Label1.Text = "Error saving file <b>" + pathToFile + "</b><br>" + exc.Message
            End Try

            Try
                ' Load the image in the WebImageViewer
                WebImageViewer1.Open(pathToFile)
            Catch exc As Exception
                ' Sends errors to a label
                Label1.Text = "Error opening file <b>" + pathToFile + "</b><br>" + exc.Message
            End Try
        Else
            Label1.Text = "Error: You must specify a file name."
        End If
    End Sub

End Class