Asp.net - Call Server Side Function After AsyncFileUpload Complete Upload?
Dec 13, 2011
I don't know why calling another function inside the OnUploadedComplete does not work in ordinary way, It's my code:
ASP.NET code:
<asp:AsyncFileUpload ID="AsyncFileUpload1" runat="server"
OnUploadedComplete ="UploadFile1"
OnClientUploadComplete="uploadComplete" ThrobberID="myThrobber"
onclientuploaderror="uploadError" CompleteBackColor="White" />
VB.NET code:
Protected Sub UploadFile1(ByVal sender As Object, ByVal e As System.EventArgs)
'saveing file on disk, this part works fine, but calling
'myfunction() does not work properly
[code]....
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Apr 25, 2012
I am trying to use PageMethods to call a function from the server side, but I am getting an error that PageMethods is undefined.
Here is what I have put into the html
<asp:ScriptManager ID="ScriptManager1" runat="server"
EnablePageMethods="True">
and here is the function from the code behind.
<System.Web.Services.WebMethod()> _
Public Function LoadChild(ByVal EntityID, ByVal EntityCat, ByVal lnType, ByVal FullExpand, ByVal lnEquip, ByVal lnTemplate) As String
and here is the call to the function using page methods.
PageMethods.LoadChild(lnEntityID, lnEntityCat, GLOBALEQUIPID, FullExpand, 0);
can anyone see why I would keep getting a PageMethods undefined error?
edit - part of the issue may be because the function isnt shared, but when shared is put in, i get this error in about 15 places. - this is refering to the session I am using - here is a snippet of the session being used that is showing an error.
prm4.Value = Session.Item("user_id")
I am getting the word session underlined with the error message below - any suggestions on how to fix this? this could fix the whole issue all together.
Error 305 Cannot refer to an instance member of a class from within a shared method or shared member initializer without an explicit instance of the class.
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May 26, 2010
I recently came across the AsyncFileUpload control in the latest (3.0.40412) release of the ASP.Net Ajax Control Toolkit. There appears to be an issue when using it in a hidden control that is later revealed, such as a <div> tag with visible=false.
Example:
Page code -
<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="act" %>
[Code].....
I have a breakpoint on the UploadedComplete event but it never fires. However, if you take the AsyncFileUpload control out of the <div>, making it visible at initial page render, the control works as expected.
So, is this a bug within the AsynchUploadControl, or am I not grasping a fundamental concept (which happens regularly)?
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Apr 22, 2011
I'm trying to, from a client-side piece, call off to a server-side piece. I need to do this synchronously. On my server-side code, though, I'm calling off to another piece of code, which I want to have a maximum of, say, 10 seconds to return a value. If I don't have a response within 10 seconds, I want to force my own server piece to set my result equal to 0, and return to the client.
Here's what I have on my server-side code so far:
Public Function GetWebResult(ByVal inputParameter As Object) As WebReturnObject Implements IWebInterface.GetWebResult
Dim result As New WebReturnObject
Dim webItem As WebItem = Nothing
[CODE]...
I realize this code is not functional. The problem is that I'm unsure how I would go about getting back into GetWebResult to set the appropriate return values before it is sent back to the client.
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Jul 13, 2011
How can i call a jquery method from vb sub routine?My code is when it returns false, the div which contains an alert message will show. Her'es my code, but its not working:
If res = Nothing Then
Page.ClientScript.RegisterClientScriptBlock(Me.GetType(), "PopupMessage", "$('.styleError').toggle('5000');", True)
End IF
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Dec 19, 2011
I have the following code to download a file from a FTP server
Sub DownloadFile_Sap()
Dim remoteuri As String = "http://appsrv01.shakarganj.com.pk:7778/reports/rwservlet?reptest&report=sap_dashboard"
[code].....
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Feb 3, 2011
I am new to Jquery and trying to start learning the new tool. What I want to do is call a JQuery message box from my gridViews Row Command function after the processing is done so I can notify the user the process has been complete. I was trying to use this website as a referanceBut not sure how to call the function from the serverside. I have triedPlace this inside your script tags...
$(document).ready(function () {
//Determining if there is a message to be shown if the message is not equal to empty string then the messagebox should appear.
[code].....
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May 10, 2011
i have a jQuery AJAX webmethod in ASP.Net that works perfectly fine when tested locally. but when uploaded to the server, sometimes it works sometimes it doesnt. when i debugged the code with firebug i see the the webmethod gets called but jumps right away to the error section of the ajax script.
jQuery code:
<script type="text/javascript">
$(document).ready(function () {
//get current date
[Code].....
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Mar 25, 2011
I am currently adding keyboard shortcuts to our web application, so from JavaScript.So far, it has consisted mostly in triggering the click events of buttons already exposed in the user-interface.Now, I would like to add another one which redirects to another page.The new page URL needs to be generated based on elements from the source page query string.Basically, I have a date in the query string and I want to generate a new URL for the next day.
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Mar 7, 2011
I am currently using the AsyncFileUpload in my VB.NET web app. Locally it works perfectly, however on the server it fails to upload a small file (<9k). I can't even seem to debug this as in JavaScript handlers I have no idea as to how to get the error reason.
function uploadError(sender,args) {
$get("<%=LabelErr.ClientID%>").innerHTML = "Unable to Upload file for the following reason: ", "<span style='color:red;'>" + args.get_errorMessage() + "</span>";
[code].....
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Apr 11, 2012
I have web page with four grid views. Each grid is hidden under a div tag. Whenever user clicks on div the data grid corresponding to the div is shown. I have binded data to the grid views at the page load only, since the data size is huge I cannot load the data binding at the page as the time taking to page load is huge. I was thinking a way that grid view gets data loaded only when user clicks on the corresponding div tag
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Jun 22, 2011
I am struckup with a problem from last two days. I am creating a web application using VB.NET, Ajax & RAD Controls. When user clicks on a button I want to open a RAD Window and show the list of ledgers available to the user, so that he can select one from the list. And to open that window I have to call a java script function from client side, which is already achieved using the below code.
[Code]...
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May 23, 2011
Can I send an object from client-side javascript to server-side code via ASP.NET ?
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Apr 13, 2010
I know this defeats the purpose of client side vs. server side (refer to title of this thread). What I would love to do is build my own custom progress indicator on the client showing how far a server side code has progressed. I figure if I could only get a JavaScript to fire and render a value of some control at pre-defined intervals while the server is working I could make it happen - but alas I'm beginning to believe that this is impossible. Below is some code that performs three 2 sec loops. At the end of each I want to change the visible value of a control on the browser. [Code]
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Jul 13, 2011
Using the following script:
$("#some_button").click(function() {
var changed = [];
[CODE]...
I need to send back the id, the old value from _1 and the new value from _0 back to the server. What is the best way to format this data so I can easily extract the data from the server side so I can easily email someone for example to let them know which textboxes have changed, what the old values were, and what the new values are
At the serverside level, I am using .NET-3.5 (VB). I know how to send the data bacl. and how to email the data, I just wanted to know how to best format the data at clientside before sending it back. I could have upto 50 sets of id, old, and new values to send back. Sorry for not making that clear earlier.
Example:
How can I modify the script above to generate this?
[
{
"id": "name_0",
"new": "text",
[CODE]...
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May 25, 2012
I am trying to convert a DLL function call which has the Callback function routine called within the DLL function call.The DLL function call signature is like this:
typedef void *HANDLE;
typedef HANDLE HACQDESC;
DECLARE_HANDLE (HWND);
[code]....
how to convert this DLL call to VB.NET and also how to create the callback function and send it as parameter to this function
call.
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Aug 19, 2009
Public Sub cleanTables(ByVal prOKDel As Short)
Dim sqlParams(1) As SqlParameter
Dim sqlProcName As String
[code]....
and finally datatable dt = dbConn.Execute(CommandType.StoredProcedure, sqlProcName, sqlParams)
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Jan 25, 2012
I add an option to a select with jQuery. When I save with an asp button, I don't see the changes on the server side in the click event.
And the HTML is all correct after I add the option.
Is it a coding problem or I don't understand something?
$(selectCourant)
.append($("<option></option>")
.attr("value",$(dropdown).val())
.text($(dropdown + " option:selected").text()));
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Sep 14, 2011
Working in VWD 2010 Express I have an aspx.vb file with the following connection string:
Protected Function getPasswordLength() As Integer
Dim conn As New SqlConnection("Data Source=localhost;database=MyDB;Integrated Security=true")
Dim cmd As SqlCommand = conn.CreateCommand()
[code]....
This works when the code is on the web server / which is collocated with the SQLServer.However, when I want to debug, I have to copy to the server. I would like to be able to "debug in place" on my development machine and only copy files to the production machine periodically. Technically the production machine is not in production at the moment, but that's beside the point.Anyway, I followed the following instruction: [URL] I can now see the remote database, functions, etc. on the other machine (from the VWD running on the development machine). However, I thought I should then be able to execute this same code locally on the development machine using ctrl-F5, but I get the following error:
**Server Error in '/' Application.A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: Named Pipes Provider, error: 40 - Could not open a connection to SQL Server)**
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Nov 4, 2011
In my VB.net code i have:
cmd.CommandText = "SELECT * FROM [strfg].[dbo].[Myfunc] (@MyParam)"
Dim myparam As New SqlParameter("@MyParam", a)
cmd.Parameters.Add(myparam)
The function (runnig on SQL server) returns a table with four columns, one row.How do I call this function from Visual Basic? cmd.ExecuteScalar() is obviously not correct. In c++ I use a recordset. What is the equivalent in vb? Does anyone have a short example?
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Dec 28, 2011
Ultimately, what I want to accomplish is an AJAX-based messaging system. I already have a database table for messages, and an ASPX to add new messages (and declare old messages no longer relevant).
The current messaging system simply polls the server every 15 seconds, and re-pulls the current message set.
What I am looking to do is: On $(document).ready(), register an ajax callback function that listens for a server-side event (e.g., MessagesUpdated) On table insert/update, fire MessagesUpdated server-side.
This way, whenever the table is updated (or new records added), any clients listening know that new data is available and can re-poll the server then.
Ideally, I'd also like to make the new data available as an event argument (to minimize re-polling the db).
I can find references to something like this in other languages, but I cannot find any actual code examples to get me started.
Assuming this is possible to do via .Net, can anyone help get me started on this?
I'm using the 2.0 Framework. Also while I added a VB.Net tag, I can read C# reasonably well, so please feel free to post in either language.
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Apr 1, 2010
I'm trying to undersatnd the syntax of calling a funciton and it seem confusing when I'm using a web service in ASP.net. Maybe this question should be in an ASP forum, but it is a VB question. This simple web service allows you to type in your name and it response with an alert box with you name.
My question is, How can you call a function with 2 arguments when the function is only defined for one. I understand that the second argument is actually a method that handling the respons, but how can you interchange function arguments for methods and how do you know that there are methods for
Here's my call:
<script type="text/javascript">
function HelloWorld()
{
var yourName = $get('txtYourName').value;
[CODE]...
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Mar 22, 2012
I want to create an ExpressionTree where a Func(of Vector, Vector, Vector, Vector, Double, Double, Vektor) should be called. So I use
Expression.Call(Forces(0).Function.Method, {Vec1, Vec2, Vec3, Vec4, Double1, Double2})(Vec1-4, Double1-2 are declared as ParameterExpression and Forces(0).Function as Func(of Vector, Vector, Vector, Vector, Double, Double, Vector). But I get an AgrumentException, because Forces(0).Function.Method has seven Arguments. (System.Runtime.CompilerServices.Closure as seventh argument at Index 0).
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Apr 19, 2010
I am having problem with the coding of this (endless loop) and formatting of summary boxes before tests are complete that should not happen. (the overall goals is to have a separate validation procedure that does not calculate or dat displays are not performed until after call function is complete and valid. The validation that takes place are that two boxes are filled in - one is text and the other is a numeric value. (using vb 2008)
[Code]...
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Dec 28, 2009
I have an ASP program that synchronizes 2 databases. I also have a VB.NET program compiled down to an EXE that fills the source database before the synch happens. In the back of my mind I know I should be able to link the VB & ASP .NET programs together since that's the power of .NET. Alternatively, if I could run the EXE from ASP it would be just as well for my project. I do have the source to both programs. The ASP script was written with a text editor - the VB was in VB 2008 Express.
assume I know nothing of linking assemblies and such because I don't - I just read that in an article. I'd prefer ASP but if necessary I could use the ASP.NET script to launch the EXE. The code is legacy ASP with VBScript so all our ASP.NET stuff is the VB flavor as well. C# makes my other programmer's head hurt so for his sake this will have to remain VB.
Is there a way I can relatively easily launch the EXE pre-sync program and have it run when the ASP synch script starts?
The server is MS Windows Server 2003 SP2 / IIS 6.0 / the .NET version is 2.0.50727.3603.
By the way - I'd love to "learn to use .NET properly" but time is short for this project and in-depth research will have to wait.
EDIT: Aaron's answer below gets me most of the way to the solution but I'm getting:
Exception Details: System.ComponentModel.Win32 Exception: Access is denied
Source Error: Line 17: process1.Start();
SOLUTION: Aaron's answer below plus the knowledge that ~/ in MapPath is the virtual root of the website and the file to run is relative to that.
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Dec 18, 2011
I'm looping through items in a listview. For each item, it deletes a file containing information stored and re-writes it with new information from the listview item.
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May 20, 2011
I wanted to build a front end web page so that I can start and stop various programs on my server remotely. I know that Shell will open something locally, but how can I make an ASP.Net page which activates programs server-side? Googling got me the "Shell" method, but I don't think that works server-side.
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Jun 15, 2012
i am using this Page.ClientScript.RegisterStartupScript() to call a javascript function from vb code behind , and this works fine with me My question is how can i send variables from the code behind to the javascript function here is what i have tried so far :
[Code]...
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May 16, 2011
I know this has been asked a lot, but I have a server-side custom validator that is not being fired, and I cannot find why (also, I've copied examples that work from other places and cannot make it work...)
The code:
<asp:CustomValidator ID="MyValidator" runat="server" ErrorMessage="My error message" OnServerValidate="MyValidator_OnServerValidate" />
Validate function
[Code]...
EDIT 2: Added a Page.validate() on my button code, and it does not call the server side of the validator.Also, the custom validator is being called (at least the client/javascript side of it, but not the server side)
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Jul 26, 2010
I was having problems inserting a string into the following tag : <tr id="rowBulkOptions" style='<%# sBulkOptionsRowStyle %>'> Don't ask why I'm using tables sBulkOptionsRowStyle is a Public string in the aspx.vb file. Seemingly the only way I can get this to render is to put Page.DataBind() in the Page_Load, Page_PreRender etc.. However this causes me problems because Page.DataBind() binds all controls on the page. I could use <%= BUT another part of the code inserts controls into the page and apparently you can't use <%= and insert controls.Is there a way I can just say 'look, put sBulkOptionsRowStyle into the page
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