Using the Asp.net Report Viewer in VS2010 in Remote mode we need to allow the user to use the default controls on the report viewer for entering in the parameters before running the report.
As permissions need to be set on the data we have a UserId hidden parameter on all the reports and the plan was to allow the user to enter in the parameters as normal and then we would add [programmatically] the userId parameter before the report is run.
The data in the report would then return the data that the user had permission to view.
[We use the SSRS web service to populate a treeview with a list of available reports for the user to select.]
I guess I'm having trouble with whats the best approach for this. I need to pass the userId parameter value to the ReportViewer and not to the server report.
I'm aware that you can use the web service to manage the parameters completely outside of the control but its not an option for us at the minute.
So in summary:
User Selects Parameters in the Report Viewer.
Code behind adds the UserId parameter value either as the report is run or initially when its loaded and the viewer passes all the parameters to the server.
I'd appreciate any help that you could give.
Liam
Found the answer and it was simple enough after and maybe didn't justify the question but here it is in case anyone is running on a low baud rate like I was yesterday.
Add the following event to the report viewer
onsubmittingparametervalues="Viewer_SubmittingParameters"
and in the handler
protected void Viewer_SubmittingParameters(object sender, ReportParametersEventArgs e)
{
Microsoft.Reporting.WebForms.ReportParameter userIdParameter =
new Microsoft.Reporting.WebForms.ReportParameter();
userIdParameter.Name = "UserId";
userIdParameter.Values.Add(this.Username etc);
// Add to existing parameters
e.Parameters.Add(userIdParameter);
}
Liam
Related
I have a webFarm application and an HTML image control as follows
<img id="logo" runat="server" src="" width="200" height="300" />
I am setting scr of this image from code behind as follows-
string mapId = "1234"; // mapId can vary
logo.Src = "./logo.aspx?mapId=" + mapId ;
Here logo.aspx is simple aspx page with following Page_load code-
logo.aspx
protected void Page_Load(object sender, EventArgs e)
{
Response.Clear();
Response.ContentType = "image/jpeg";
int mapIdValue= int.Parse(Request.Params["mapId"]); // mapId from querystring
string data = someFunction(mapIdValue); // to get image in Base64 String format
Response.BinaryWrite(Convert.FromBase64String(data));
Response.End();
}
This works fine.
My problem is, I dont want to send mapId in query string as it is exposed to user. So what would be the possible ways to send mapId from my page to logo.aspx.
I cant use session or HttpContext Items Collection as it is a Webfarm.
I tried using previousPage but not working for me..
Any ideas on this?
As the browser will retrieve the image in a subsequent, independent request, the server needs to be able to recognize the map id in this new request. It is not generally impossible to use sessions in a web farm, but it requires some kind of state server/database that all the servers in the farm share.
If you are unable to use sessions in your web farm, you need to transmit some information to the client that is used in the new request to identity the map. Independent of the way you choose, the client gets hold of some id information. Even though you do not want to use a query parameter, I'd still prefer using query parameters as opposed for instance using a cookie to hand over the id to the client. The main reason is that it will also work if you have several maps on a page.
In order to hide the real id for the client you can create an artificial id, e.g. a GUID that you can use to retrieve the image. You'd need to store the artificial id so that you can identify the map.
You can limit the artificial id so that it is valid only for some time, a number of requests or for a specific user. This way, the client is only able to use the artificial id in a very limited amount of time.
Of course, this requires some effort, but should be a stable way also in a Webfarm.
it may be usefull. please refer the below link
http://www.c-sharpcorner.com/UploadFile/gopenath/Page107182007032219AM/Page1.aspx
I'm struggling with API calls of Kentico forms using ASP.NET MVC, so that I can use AngularJS to display the return data (JSON format).
Specifically, my client is using Kentico on their server to create data using "Forms" on Kentico and I want to get the records stored in these forms via API calls using ASP.NET MVC. What I'm thinking is that in the general section of the "Forms", I see the "Form code name" showing that "Code name is a string identifier of the object that can be used by developers in API calls or URLs". But it seems to be there's no good example of it on internet. Keep trying to search it but no luck. I also tried to access data directly in SQL Server in which kentico stores the data. But the table's name that Kentico uses in SQL Server to store the data is different from the ones in "Forms" or "Custom tables" in Kentico.
Hope someone can show me how to do it and I really appreciate it. Thanks in advance.
There is a very good example in the official documentation of Kentico.
Please note that Forms have been renamed a few times in the past (they were called BizForms and On-Line forms) that's the reason why the code below references CMS.OnlineForms and uses BizFormInfoProvider. It might also very well be the reason why you didn't find any good example :)
The example below shows how to retrieve Form's definition (metadata), get all the data and iterate through it.
using CMS.OnlineForms;
using CMS.DataEngine;
using CMS.SiteProvider;
using CMS.Helpers;
...
// Gets the form info object for the 'ContactUs' form
BizFormInfo formObject = BizFormInfoProvider.GetBizFormInfo("ContactUs", SiteContext.CurrentSiteID);
// Gets the class name of the 'ContactUs' form
DataClassInfo formClass = DataClassInfoProvider.GetDataClassInfo(formObject.FormClassID);
string className = formClass.ClassName;
// Loads the form's data
ObjectQuery<BizFormItem> data = BizFormItemProvider.GetItems(className);
// Checks whether the form contains any records
if (!DataHelper.DataSourceIsEmpty(data))
{
// Loops through the form's data records
foreach (BizFormItem item in data)
{
string firstNameFieldValue = item.GetStringValue("FirstName", "");
string lastNameFieldValue = item.GetStringValue("LastName", "");
// Perform any required logic with the form field values
// Variable representing a custom value that you want to save into the form data
object customFieldValue;
// Programatically assigns and saves a value for the form record's 'CustomField' field
item.SetValue("CustomField", customFieldValue);
item.SubmitChanges(false);
}
}
UPDATE:
The example above assumes that you're using the API from within the running Kentico instance. If you want to use Kentico API (DLLs) from an external application please follow the steps I described in another answer.
You also asked about the site identifier (siteId or siteName params of the BizFormInfoProvider.GetBizFormInfo() method). They refer to the SiteInfo object in Kentico (DB table CMS_Site). You can find site name if you navigate to Site->Edit site->General->Site code name.
If you don't want to use Kentico DLLs there is another option - using Kentico REST endpoint.
So I have a single form on a page. There are several text input fields and such. Right now there is also a jQuery file upload control wherein you can select several files. The problem I have right now is that I'm requiring that the user upload the files first (using the jQuery control) and then I save those files in Session state until the regular form posts the rest of the form fields. Then I pull the previously uploaded files from Session and do what I need to do.
So basically to fill out the form requires two separate POST operations back to the server. The files, then the remaining form fields.
I'm thinking there must be a better way to let a user select his/her files yet not post anything until the user submits the main form to post all the other fields. I've read several posts on this site, but I can't find one that addresses this particular issue.
Any suggestions/assistance is greatly appreciated.
I believe you can do this using Uploadify. There are two options you'd want to look at. First, set auto to false to prevent selected files from immediately being loaded. Second, use the formdata option to send along your other form fields along with the payload.
You'd then call the upload method when the user submits the form, uploading each file in the queue and sending the form data all at once.
Server Side Part:
You'll probably be submitting the form to an ASPX file or ASHX handler. I prefer using an ASHX handler since they're more light-weight. Both will allow you access to the HttpContext or the HttpRequest object. First, you'll need to check context.Request.Files.Count to make sure files were posted:
if (context.Request.Files.Count > 0) // We have files uploaded
{
var file = context.Request.Files[0]; // First file, but there could be others
// You can call file.SaveAs() to save the file, or file.InputString to access a stream
}
Obtaining the other form fields should be just as easy:
var formfield = context.Request["MyFormField"]; // Some form field
You can also write results back to the client, such as a JSON encoded description of any resulting errors:
context.Response.Write(response); // Anything you write here gets passed in to onUploadSuccess
I think that should get you started anyway!
I have .NET MVC web application. On my page there is a form to choose what pdf docs to display. I want to open pdf files in a new window or tab. The user can choose to display one or two pdf files. My form posts the data to controller, but i dont know how to return two pdfs from my controller and display in separate window/tab.
Does anyone have an idea how this can be done?
You can let the model write the urls to the documents into a javascript code block
#if(model.ShowPDFs)
{
<script>
function ShowPDF()
{
window.open('#model.PdfUrl1');
#if(model.Open2Pdf)
{
window.open('#model.PdfUrl2');
}
}
// opens the document after 3 seconds after the page has loaded
setTimeOut("ShowPDF()", 3000);
</script>
}
I made something similar (but I build the pdf server-side using ReportViewer) in this way:
my form post data to the controller action (with ajax)
the controller action reads the posted data, query the database
accordingly to it, and decide how many pdfs I have to return;
the controller action saves in the session, with a different key for every pdf (determined by my logic), the data to pass to ReportViewer;
the controller action returns (to the callback of the ajax call) an array with all the key used to store data in the sessions;
client side, the js callback loop over the returned array and, for every item, call (it opens a link in a different tab) a different controller (whose only responsibility is to send pdf to the request) passing it, in the query string, the key for that pdf;
the PrintController read the data from the session (using the key received), build the report and send it in the response.
I think you could do something similar; I don't understand how your pdf are built (are they data-depending or pdf pre-existing on the server?), but you can save the pdf stream, or the pdf path in the session instead of the data like me.
Hope to help; if you think that my solution can work for you and you need some code I can try to extract some from my codebase (in my case there are other issues and I have to rewrite the code if you need it ...).
I need to get the url of the site so that I render a user control on only the main page. I need to check for http://foo.com, http://www.foo.com, and foo.com. I am a bit stumped as to how check for all 3. I tried the following which does not work.
string domainName = Request.Url.Host.ToString();
if (domainName == "http://nomorecocktails.com" | Request.Url.Host.Contains("default.aspx"))
{ //code to push user control to page
Also tried
var url = HttpContext.Current.Request.Url.GetLeftPart(UriPartial.Authority) + "/";
Any thoughts?
You need to check if the Request.Path property is equal to / or /Default.aspx or whatever your "main page" is. The domain name is completely irrelevant. What if I accessed your site via http://192.56.17.205/, and similarly, what if your server switched IP addresses? Your domain check would fail.
If you utilize the QueryString to display different content, you'll also need to check Request.QueryString.
Documentation for Request.Path:
http://msdn.microsoft.com/en-us/library/system.web.httprequest.path.aspx
Documentation for Request.QueryString:
http://msdn.microsoft.com/en-us/library/system.web.httprequest.querystring.aspx
If you need the user control to only appear on the main page (I'm assuming you mean home page), then add the code to call the user control to the code behind of that file.
If this code is stored in the master page, then you can reference it like:
Master.FindControl("UserControlID");
If you are only using the one web form (ie. just Default.aspx), then you can check that no relevant query strings are included in the URL, and display only if this is the case:
if (Request.QueryString["q"] == null){
//user control code
}
However if you are using this technique then I would recommend using multiple web forms using master pages in the future to structure your application better.
The ASP.NET website has some good tutorials on how to do this:
http://www.asp.net/web-forms/tutorials/master-pages