Redirect to ASPX Page using Generic Handler in ASP.Net

rakibxl

SOLVED CLOSED ACTIVE ANSWERED
User: rakibxl
Posted: on Jun 26, 2018 03:00 AM
Forum: ASP.Net Web Forms
Answer: 1
Views: 9743
Sample Code: Download

i write a code in my handler to redirect my page

context.Response.Redirect("iFrameProcessTransition.aspx" + UrlPageParameter, True)

but it is not refreshing the page but working

it is succesfully passing the parameters what i have passed in the url but not refresh the page.

Imports Umbro.Data.Services
Imports Microsoft.Azure
Imports Umbro.Localization
Imports Umbro.Data.Models
Imports System.Threading
Imports Umbro.Data.Models.BlobStorages
 
Public Class BlobItemFileUpload
    Implements System.Web.IHttpHandler, IRequiresSessionState
 
    Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
 
        Dim FileName As String = ""
        Dim Login As New Umbro.Data.Models.Login
        Dim sp As New DatabaseSp
        Dim ReturnMessage As String = ""
        Dim BlobStorageRequest As New BlobStorageRequest
        Dim BlobStorageResponse As New BlobStorageResponse
        Dim ProcessTransition As New ProcessTransition
 
        Dim QS As New QS
 
        Try
            Dim IDBlobStorageType As String = context.Request.QueryString("IDBlobStorageType")
            QS.IDBlobItem = context.Request.QueryString("IDBlobItem")
            QS.UrlRandom = context.Request.QueryString("UrlRandom")
            QS.IDProcessTransition = context.Request.QueryString("IDProcessTransition")
            QS.Parameter = context.Request.QueryString("Parameter")
            QS.Image = context.Request.QueryString("Image")
 
            If QS.IDBlobItem = "undefined" Or QS.UrlRandom = "undefined" Or IDBlobStorageType = "undefined" Then
                context.Response.ContentType = "text/plain"
                context.Response.Write(FileName + " " + dbResources.label.MissingParameter)
                Exit Sub
            End If
 
            If context.Request.Files.Count > 0 Then
                Login = HttpContext.Current.Session("Login")
 
                Dim files As HttpFileCollection
 
                files = context.Request.Files
                For i As Integer = 0 To files.Count - 1
                    Dim File As HttpPostedFile = files(i)
                    FileName = File.FileName
                    FileName = System.IO.Path.GetFileName(FileName)
 
                    BlobStorageRequest.FileName = FileName.ToLower
                    BlobStorageRequest.FileSize = File.ContentLength / 1024
                    BlobStorageRequest.ContentType = File.ContentType
 
                    If Not String.IsNullOrEmpty(QS.IDBlobItem) Then
                        BlobStorageRequest.IDBlobItem = QS.IDBlobItem
                    End If
 
                    BlobStorageRequest.IDBlobStorageType = IDBlobStorageType
 
                    BlobStorageResponse = sp.BlobStorageAdd(Login, BlobStorageRequest)
 
                    If BlobStorageResponse.ReturnMessage = "OK" Then
                        Dim clsBlobStorage As New BlobStorageService
                        Dim clsBlobStorageRequest As New BlobStorageUploadRequest
                        Dim clsBlobStorageResponse As New BlobStorageUploadResponse
 
                        clsBlobStorageRequest.FileName = BlobStorageResponse.BlobStorage
                        clsBlobStorageRequest.MemoryStream = File.InputStream
                        clsBlobStorageRequest.IDBlobStorageType = IDBlobStorageType
                        clsBlobStorageRequest.DatabaseConnectionString = ConfigurationManager.ConnectionStrings("DataSourceDB").ToString
                        clsBlobStorageRequest.StorageConnectionString = CloudConfigurationManager.GetSetting("AzureStorageConnectionString")
                        clsBlobStorageRequest.StorageContainer = CloudConfigurationManager.GetSetting("AzureStorageContainer")
 
                        clsBlobStorageResponse = clsBlobStorage.BlobUpload(clsBlobStorageRequest)
 
                        If clsBlobStorageResponse.ReturnCode = "1" Then
                            ProcessTransition.IDProcessTransition = QS.IDProcessTransition
 
                            '' Change the status
                            ReturnMessage = sp.ProcessTransition(Login, QS, ProcessTransition)
                            If ReturnMessage = "OK" Then
                                Dim UrlPageParameter As String = ""
                                UrlPageParameter += "?IDBlobItem=" & QS.IDBlobItem
                                UrlPageParameter += "&UrlRandom=" & QS.UrlRandom
                                UrlPageParameter += "&Image=" & QS.Image
                                UrlPageParameter += "&TransitionPageResult=OK"
 
                                context.Response.Redirect("iFrameProcessTransition.aspx" + UrlPageParameter, False)
                            Else
                                context.Response.Write(ReturnMessage)
                                Exit Sub
                            End If
                        Else
                            context.Response.Write(clsBlobStorageResponse.ReturnMessage)
                        End If
                    Else
                        context.Response.Write(BlobStorageResponse.ReturnMessage)
                    End If 
                Next 
            Else
                context.Response.Write(dbResources.label.NoFileFound)
            End If
 
        Catch exc As ThreadAbortException
            Exit Sub
        Catch ex As Exception
            context.Response.ContentType = "text/plain"
            context.Response.Write(ex.Message)
        End Try
 
    End Sub
 
    ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
        Get
            Return False
        End Get
    End Property
End Class

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dharmend...

0 5

Reply
ANSWER
User: dharmendr
Replied: on Jun 26, 2018 04:57 AM
Modified: on Jun 26, 2018 04:58 AM
Report

Hi rakibxl,

Check this example. Insert break point and check your code.

HTML

<asp:TextBox ID="txtBlob" runat="server" />
<asp:Button ID="btnDetails" Text="Details" runat="server" OnClick="Details" />

Code

protected void Details(object sender, EventArgs e)
{
    Response.Redirect(string.Format("~/Handler.ashx?BlobItem={0}", txtBlob.Text));
}

VB.Net

Protected Sub Details(sender As Object, e As System.EventArgs)
    Response.Redirect(String.Format("~/Handler.ashx?BlobItem={0}", txtBlob.Text))
End Sub

Handler.ashx

<%@ WebHandler Language="C#" Class="Handler" %>

using System;
using System.Web;

public class Handler : IHttpHandler
{

    public void ProcessRequest(HttpContext context)
    {
        string UrlPageParameter = "?IDBlobItem=" + context.Request.QueryString["BlobItem"];
        context.Response.Redirect("iFrameProcessTransition.aspx" + UrlPageParameter, false);
    }

    public bool IsReusable
    {
        get
        {
            return false;
        }
    }
}

VB.Net

<%@ WebHandler Language="VB" Class="Handler" %>

Imports System
Imports System.Web

Public Class Handler : Implements IHttpHandler
    Public Sub ProcessRequest(ByVal context As HttpContext) Implements IHttpHandler.ProcessRequest
        Dim UrlPageParameter As String = ""
        UrlPageParameter += "?IDBlobItem=" & context.Request.QueryString("BlobItem")
        context.Response.Redirect("iFrameProcessTransition.aspx" + UrlPageParameter, False)
    End Sub
 
    Public ReadOnly Property IsReusable() As Boolean Implements IHttpHandler.IsReusable
        Get
            Return False
        End Get
    End Property
End Class

iFrameProcessTransition

Response.Write("Blob Item : " + Request.QueryString["IDBlobItem"]);

VB.Net

Response.Write("Blob Item : " + Request.QueryString("IDBlobItem"))

Screenshot

I agree, here is the link: https://www.e-iceblue.com/Introduce/spire-office-for-net-free.html

Redirect to ASPX Page using Generic Handler in ASP.Net

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