Redirect From one app page to another

Question

I am creating a Provider hosted app. In that I have created two different .aspx pages. I want to redirect to the other page. But I am not able to find it out how to redirect.

When I check my AppManifest file there is a URL to show which page to be load on start up. It is like follow.

<Properties>
    <Title>PollAppDemo1</Title>
    <StartPage>~remoteAppUrl/Pages/PollQuestionView.aspx?{StandardTokens}</StartPage>
</Properties>

I tried to put url like this in Page.Response.Redirect(""); but m not able to do this.

Answer 1

Response.Redirect(TokenHelper.GetAppContextTokenRequestUrl(sharePointHostUrl, Server.UrlEncode(targetUrl)));

The app redirect page

Answer 2

Why not just use a server relative Url?

Like: Page.Response.Redirect("PollQuestionView.aspx")

The standard tokens are replaced at compilation time in for example the AppManifest. They will NOT be replaced in your code at runtime. So if you want to pass them on you would need to get them from Page.Request and add them to the Redirect Url.

Use Page.Request.Querystring["Name of parameter"] to get the value of a specific querystring parameter.

Answer 3

Use this instead, string url = "~remoteAppUrl/Pages/PollQuestionView.aspx"; string queryString = "SPHostUrl=http%3a%2f%2fspmain%3a3865&SPLanguage=en??-US&SPClientTag=0&SPProductNumber=15.0.4420.1017"; SPUtility.Redirect(url, SPRedirectFlags.Default, Context, queryString); [How to use SPUtility.Redirect][1] [MSDN reference][2]

This should work,

Response.Redirect(TokenHelper.GetAppContextTokenRequestUrl(sharePointHostUrl, Server.UrlEncode(targetUrl)));

Answer 4

You can use the current SharePointContext instance instead of redirecting back to the SharePoint host and then being redirected once again to the app to get a new context (as suggested by Rahul).

Add these utility methods to the auto-generated SharePointContext.cs file (at around line 277 which is where the SharePointContext class definition ends. Don't forget to add 'using System.Linq;' and 'using System.Collections.Specialized;')

public void AddStandardTokensToQueryString(NameValueCollection queryString)
{
    if (queryString == null)
    {
        throw new ArgumentNullException("queryString");
    }

    if (spHostUrl != null)
    {
        queryString[SPHostUrlKey] = SPHostUrl.AbsoluteUri;
    }

    if (spAppWebUrl != null)
    {
        queryString[SPAppWebUrlKey] = SPAppWebUrl.AbsoluteUri;
    }

    if (!string.IsNullOrWhiteSpace(SPLanguage))
    {
        queryString[SPLanguageKey] = SPLanguage;
    }

    if (!string.IsNullOrWhiteSpace(SPClientTag))
    {
        queryString[SPClientTagKey] = SPClientTag;
    }

    if (!string.IsNullOrWhiteSpace(SPProductNumber))
    {
        queryString[SPProductNumberKey] = SPProductNumber;
    }
}
public String GetStandardTokensQueryStringValue()
{
    NameValueCollection qs = new NameValueCollection();
    AddStandardTokensToQueryString(qs);
    return String.Join("&",
        qs.AllKeys.Select(a => a + "=" + HttpUtility.UrlEncode(qs[a])));
}

How to use:

protected void btnSubmit_Click(object sender, EventArgs e)
{
    SharePointContext spContext = 
        SharePointContextProvider.Current.GetSharePointContext(Context);
    Response.Redirect("PollQuestionView.aspx?" + 
        spContext.GetStandardTokensQueryStringValue(), true);
}

Answer 5

use window.location.href = url; for sharepointhosted App and Client API.