SP - check URL to have a source and redirect to source

Question

I want to check my url to have a source and redirect to it.

I have a button for add a ListItem, i want where doesn't have a source in URL the page refresh, where have a source in URL --> redirect me to the source..

This is my URL :

http://ue-sps2/TestSite/Lists/linkBi/NewForm.aspx?RootFolder=%2FTestSite%2FLists%2FWayBill&ContentTypeId=0x0100AA8F1829F56BF44B89174066B393D0D0001DE65983974F8844815B824AF22378F0&Source=http%3A%2F%2Fsf%2Dspsdev02%2FTestSite%2FLists%2FWayBill%2FAllItems%2Easpx

code redirect me to

http://ue-sps2/TestSite/Lists/linkBi/NewForm.aspx

I want to redirect me to Source=http%3A%2F%2Fsf%2Dspsdev02%2FTestSite%2FLists%2FlinkBi%2FAllItems%2Easpx

http://ue-sps2/TestSite/Lists/linkBi/AllItems.aspx

Answer 1

To go more precise I would like to code it in following manner.

if (Request.QueryString.Count > 0) {

    string urlSource = Request.QueryString["Source"];

    if (!String.IsNullOrEmpty(urlSource))
    {
        int pos = urlSource.LastIndexOf(@"/");
        String newUrl = urlSource.Substring(0, pos + 1) + "/AllItems.aspx";
        SPUtility.Redirect(newUrl, SPRedirectFlags.Default, HttpContext.Current);
    }
}

Answer 2

If I understood you correctly, then following is your requirement.

1. Checking whether Source exists in query string or not
2. If it exists, then redirect to that URL

Example

string source = Request.QueryString["Source"];

if (source != "")
{
   SPUtility.Redirect(source, SPRedirectFlags.Default, HttpContext.Current);
}