Web Forms :: How To Pass Value From ASPX To ASHX
Apr 21, 2012Because i want concatinate that value with image filename.
View 1 RepliesBecause i want concatinate that value with image filename.
View 1 RepliesHow To Redirect from httphandler(.ashx) to an (.aspx) page in the same application ?
[URL]
can some expert confirm better approach
I am developing an application that stores images as Base64 strings in xml files. I also want to allow the user to crop the image before saving it to the file, preferably all in memory without having to save a temp file, and then delete it afterwards. In order to display the newly uploaded image, I need to create a HTTP handler that I can bind the asp:Image to. The only examples for doing this online require passing the .ashx an ID and then pulling the image from a DB or other data store. Is it possible to somehow pass the raw data to the .ashx in order to get back the image?
View 3 RepliesI have a gridview and in it is code to display an image
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This works fine for pass one variable. but I need to send two variables 'ImageNum' and 'refID' to the Handler.ashx page, any ideas how, tried a few things in last few hours and as yet no joy!
i have generic handler file ashx file , i want to pass value from my codebehind to ashx file and i want to use switch case inside the ashx handle
View 1 Replieswhat are the differences between .aspx and .ashx pages. I use ashx now when I need to handle a request that called from code and return with a response.
View 3 RepliesIn a basic scenario where I have a GridView with files to download and link buttons to download them, is there any benefit at all for creating a custom http handler for streaming those files as opposed to simply streaming from the event handler of the download link button?
Edit: As some suggested code reuse would favor the handler, however it's not an issue in this particular case. The handler is also faster being that it avoids the page life cycle, however this slight performance improvement is probably not worth creating a handler for in my particular situation. The only thing that comes to mind now is (assuming using the same aspx page approach) whether there is any special consideration in a situation where the GridView is inside an UpdatePanel?
I have 2 pages Page1 has a dropdownlist, page2 has this on pageload:
View 5 RepliesI have an Handler.ashx file and on .aspx page load it calles the .ashx file for image reading. I am attempting to pass a session from the .aspx file to the .ashx file in order to make my query of grabing the image secure. The problem is that everytime I call a session: HttpContext.Current.Session["ID"], the value is returning null or errors saying the o so commong "Object reference not set to an instance of the object". I have tried a couple ways of grabing the session:
1.) context.Session["ID"]
2.) HttpContext.Session["ID"]
3.) HttpContext.Current.Cache["ID"]
none of them are giving me the ID session set in the .aspx page. should i be using Server.Transfer instead? is there a way to grab a session variable set in a .aspx page and called in a .ashx page?
I have to pass the value [sysid] for getting the value from another table.
I coded asp:
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For example, I have master page MyMasterPage.aspx and content page MyDefault.aspx. I have many UpdatePanels at MyMaterPage.aspx, and also I have many UpdatePanels at MyDefault.aspx.
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I want JavaScript functionClickMenu(this) at input button [id="ButtonMaster1" @ MyMasterPage.aspx] pass its value ["Menu-1"] into text box [id="TextBoxDefault1" @ MyDefault.aspx], and then performing update / doing post-back to server ONLY FOR UpdatePanelDefault1.
I am looking forward an example code for JavaScript functionClickMenu(this).
howto pass value from one aspx page to other.In this on one page i have radgrid when i am click on button the how to select the value of selected grid item and then how to pass that value to other page.
View 8 Replieshow to pass the text value from .aspx to aspx.vb? im using asp.net(VB).
View 3 Replies I am trying to do Response.Redirect inside usercontrol but it is not working and same page is showing.
Can anyone explain how to pass it from useercontrol to .aspx.cs page and do the redirect.
I have created a UserControl [uscAuditTeam.ascx], there I have a Dictionary list and I added some values.
I want to pass the dictionary value to AuditTracking.aspx page. But it shows the null value.
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this question sounds simple but it cause some headache..
how can i pass data from aspx.cs code behind file to class.cs file?
i try to using namespace but doesn't work.
I've got a pretty simple problem but I am not sure what is the best way to accomplish this. I've got an input aspx where a user fills in about 15-20 input fields and I want to display this information on the next page however; I am not really sure what is the best way to go about doing this?
I tried using 'Server.Transfer' and 'FindControl' API calls but have struggled to use them because the value is always null because it cannot find the asp:textbox ID I have specified from the previous page.
What would be the best way to just simply transfer the values from my previous page to the next page??
i would like to call the external js file's function onclientclick event, but how can i pass the parameter, which i get from the hidden field value from the same aspx file.
<asp:button id="btn" onclientclick="javascript:test(hidden_field);"/>
I cannot Pass the value from Display.aspx page to Display.aspx.cs thru '<%#FindAuditorById(Eval("FK_MM_AuditorsSysID") as int?) %>'.The secanrio:
I have a DetailView[dtlviewAuditAssisgnment], with LinqDataSourceId[LinqDataSourceAssisgnment] and Binding the table called tblTT_Assisgnment.
I have a column called FK_MM_AuditorsSysID which contains Id of a value.
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I have 2 user controls that is hosted by 2 different aspx pages.
example:
srcpage.aspx --> hosts the --> sourceusercontrol.ascx
and
destpage.aspx --> hosts the --> destinationusercontrol.ascx
I would like the values in the text fields of the sourceusercontrol.ascx to be passed on to the labels in the destinationusercontrol.ascx.
I have gone through the MSDN ASP.Net examples and i was able to successfully pass values between two aspx page using the postback URL functionality, but cannot do the same thing with the usercontrols on 2 different aspx pages.
From an ascx page, I click a link that opens a popup aspx page(child). That aspx page has a gridview with hyperklinks. When I click on one of the hyperlinks of my gridview, I want to pass the value in that cell to a textbox located on my ascx page(parent). I try using javascript , but I can't get it to work. here is my javascript code and the gridview code:
<script language="javascript" type="text/javascript">
function post_value(str) {
window.opener.document.getElementById('textbox1').value = str;
self.close();
}
</script>
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I am using flow player for my online tutorial site, which passes values dynamically. i.e. i am passing course id values, each id values having separate videos. Here is my code:
<a href="Content/Video/2-record-ppt-presentation.mp4"
style="display:block;width:520px;height:330px" id="player"></a>
<script type="text/javascript" src="js/flowplayer-3.2.4.min.js"></script>
<script type="text/javascript" language="JavaScript">
flowplayer("player", "flowplayer-3.2.5.swf");
</script>
My requirement is i want to pass url values in 'href' dynamically.And i am using vb code behing in asp.net.
I am try to create a website like you tube.
i fetch the images in a grid view.
and make a hyper link in it.
Now i want to pass the clicked image value to the ASPX page.
So how can I get the value of gridview clicked image in the ASPX page.
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False">
<Columns>
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ID="ImageButton1" runat="server" ImageUrl='<%#Eval("Product_Path","~/Images\{0}") %>'
Height="70px" Width="70px" HeaderText="Product Image" OnClientClick="return OpenPopup() ;" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<script type="text/javascript">
function OpenPopup()
{
window.open(' ','mywindow','width=700, height=800');
return false;
}
</script>
I jast wants to access the ImageUrl value inside the Javascript's function OpenPopup() to open a new window to This URL. All Codes are residing in Same Page.
how to use gridview usercontrol (Ascx) and sql pass to aspx page
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