I have a FileUpload control that allows a user to upload an image. After the image is uploaded, I'd like to update an Image control I have on the page.
The uploading part is working, as I can see the files in the folder after. However, the image never updates.
I'm relative new to .NET but I think maybe it has something to do with postback?
Here is the code I have:
[Code]....
there I have a code like below but it doesn't work !
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Iy converts the asp:image like that;
[Code]....
And I am unable to use src in code behind ! What can I do ?
I'm trying to set the ImageUrl property after I've uploaded an image so that I can display the newly uploaded image, but for some reason it's not working.
If I navigate from the record I've just updated and then return back to that same record, the image then displays. It just doesn't display right after I've updated it. Basically what I'm doing is this:
Sub FormView1_OnItemUpdated(Sender As Object, e As FormViewUpdatedEventArgs)
Dim MyImage As Image
MyImage = FormView1.FindControl("Image1")
MyImage.ImageUrl = "image1.jpg"[code]....
I've left out the path intentionally because I'm pretty certain that the path I'm giving is correct... again, if I navigate away from the record and then return to it, the image displays. In addition, when I view the "Page Source" to view the resulting html, the src property of the image tag is blank . So, it's not a path issue... the issue is that its not setting the src at all which is why the image is not displaying.
I have an image inside a repeater, and I would like to change its IMAGEURL based on parameter that's being passed to it.
<asp:Repeater ID="Repeater" runat="server">
<HeaderTemplate>
<asp:Image ID="imgType" runat="server" />[code]....
There is a SWITCH statement in the code behind that is altering the IMAGEURL depending on what's being passed to it. Inevitably, however, the images ID ("imgType") is not visible to the SWITCH statement (presumably because it's inside a REPEATER).
I'm having a little trouble with the asp:MenuItem and Google's Chrome. Basically, when using just an ImageUrl (i.e. no text) the links don't work in Chrome. Here's my code
<asp:Menu ID="LeftNaviMenu" runat="server" Height="100%" Width="109px">
in my page_load method I call a mthod that it create some dynamic controls. one of them is an Image control that it's ImageURL property set to an URL that is saved in data base. image shows that URL but when postback ocuurs, previous image controls doesn't their image. but other controls for example TextBoxes keep text values. what should I do for keep image url property for this dynamic Images controls?
View 3 Repliesis there any way i can assigned an imageurl to html img tag from database like ... something like that or i can assign image url to html img tag from code behind like imgCaravan.ImageUrl= "~/images/" + rdr["image"].ToString(); As I am using a image swapping jquery which uses html tag to display images . The issue is I am getting the image url from the database , i just cant find a way to pass the url to html tag, I can do this by using asp image control.
View 1 Repliesi have been following the asp.net data access tutorials on this site. When i try to update, nothing happens. I believe the problem lies with my wrong coding on the BLL part. I'm using table adapters. Could anyone point out what iswrong with my code or tell my what the correct code is?
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this is the code
<%
@
Page
Language="VB"
AutoEventWireup="false"
CodeFile="Default.aspx.vb"
Inherits="_Default" %>
[Code]....
I've been trying to resolve this issue for like 10 hours but with no luck. I am trying to load data from a db to text boxes and allow the user to enter his/her modifications and click a button to update the db with the entered value in the textboxes. The problem is the entered data are not sent to the db but the data that are loaded when the page is loaded is what it goes to the db. I also tried vb codes and javascript to change the data of the textbox but that did not work.
here is my code:
[Code]...
I have a group of two radio buttons and I would like to set the state of them in my code-behind page. I can do this quite simply by setting the checked state of each (e.g. RadioButton1.Checked = true; adioButton2.Checked=false;) The problem I'm having is that the state of the buttons on the screen is not updated until I navigate away from the page the buttons are on then return to the button page. Question: how can I make the button checked appearance change from the code on the server?
View 4 RepliesI have webpage and a master page.In master page I defined a Label and ContentPlaceHolder :
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In my webpage I have an updatepanel and a button that updates the Label.[Code]....
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If the button is inside updapanel, nothing happens when I click the button (Label is not displayed), but if I move button outside the panel it works. (Button must be inside updatepanel and ofcourse no PostBackTrigger)
I have a gridview in one UpdatePanel and a FormView in another UpdatePanel.
The FormView UpdatePanel refresh is triggered when the GridView SelectedIndexChanged event fires. This then displays the FormView. However when a user navigates to another page in the GridView or sorts the data then the GridView is refreshed and the SelectedIndex
is changed to nothing in the code behind via the GridView DataBinding event.
The FormView UpdatePanel does not refresh to reflect this. I have to manually set the FormView datasource to null and update the FormView UpdatePanel in the code behind.
My question is why doesn't my FormView UpdatePanel update when the SelectedIndex of the GridView is altered in the code behind.
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how to create gridview (with code).i am trying to build a table (gridview) where i can just edit and update.
Code:
<div class="content">
<div class="table-responsive">
<asp:GridView ID="gvTable" runat="server" ClientIDMode="Static" AllowSorting="True" ShowHeaderWhenEmpty="True" SortedAscendingHeaderStyle-CssClass="sorting_asc" SortedDescendingHeaderStyle-CssClass="sorting_desc" HeaderStyle-CssClass="sorting" AutoGenerateColums="True" onrowediting="gvTable_RowEditing" onrowupdating="gvTable_RowUpdating" >
[code]....
How do i update the existing data and it will auto save in my sql database.
I was using this code to send emails and it was working perfectly... now i receive this error message "Failure sending Email".
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I'm using VWD2010 express. using C# code behind.
What I need to do is update a label during a loop (simplified from my implimentation). If I can refresh the whole page or an update panel that would work too. I want to give the user more info than just "Please Wait...". So the extreamly simplified version of what I'm trying to do is:
<asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
<br />
<asp:Button ID="Button1" runat="server" onclick="Button1_Click Text="Button" />
protected void Button1_Click(Object sender, EventArgs e)
{
for(int i =0; i<=10; i++)
{
Label1.Text = i.ToString();
}
}
Because ASP runs all of it's code behind events before sending the HTML to the user it will not update the label text until after the entire loop has run. I've tried using and update panel and using the UpdatePanel1.Update(); command. I've turned off out buffering Response.Buffer=false; and Response.BufferOutput=false;. I've been searching forums for the past 2 days trying for find a solution. Is this even possilble with ASP or are we at the mercy of ASP only giving HTML to the user when after it's done with it's server side events?
how do I update a field from code like inserting a date. i have something like below. i want to insert the date when the record is updated or edited, but it does not work what is the correct way to do this in mvc
[HttpPost]
I have version 2.6.10 in my project. I have not modified any of the settings. The generated code is getting updated on build. I added a new method to a controller. It doesn't show up in the Views property. I added new javascript files that don't get added to the Scripts class.
Also, what is the correct method to update to a new version of T4MVC when it comes out. Do I just copy over the existing files in my project?
In my orginal post i asked the question to handle this within the .Net side.
I was trying to stay away from using SSIS package, and with help from another member, i was able to get the process to work with an excel spreadsheet.
But part of my project requires us to allow .csv files.. so my question is how can i modify the code i have now for the excel to work with a .csv file?
You can find the current code in my original post here:
[URL]
I not sure what the best solution is for the end result.. I was reading somewhere online that you can right the data from the file to a datalist or gridview so you can present the user with a view of what is being uploaded, then use that datacontrol to insert into SQL.
In my current code, im uploading the file, then using that file to do the insert. This works fine for .xls files.. but i need to accomplish the same thing for a .csv file.
I am trying to set the Backcolor of this TabPanel in code behind. But the color of the TabPanel is still white. I also tried the TabContainer with no success.
I wonder what could be wrong with the code?
[Code]....
I am using some code I found that generates a random password. I am in the habit of putting code in a seperate file. The code was written in the same file and I'm trying to move it to a seperate file and get the following message. Also, below, I posted
the original code (code on same page as aspx) and what I did (code in seperate file).what adjustment needs to be made to make the seperate code file work?
Compiler Error Message: BC31143: Method 'Public Function GeneratePassword(length As Integer, numberOfNonAlphanumericCharacters As Integer) As String' does not have a ignature compatible with delegate 'Delegate Sub EventHandler(sender As Object, e As System.EventArgs)'.
Source Error:
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ORIGINAL CODE (with code on same page)
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MY CODE BEHIND
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TXTARIZATIP.Text=DropDownList3.SelectedItem.ToString(); i think it should be worked but it does not.
View 5 RepliesI've been working on the ASP.NET Development Server recently (on an MVC project and I'm finding that it is inconsistent in how it serves the changes I make to my code. For example, I make a change to the C#/HTML/CSS/JS in the dev environment and run the page, and the change appears on the screen. But if I edit the HTML again and run the page again, the new change doesn't appear. Even ctrl+F5 doesn't do it. I have to stop the web server and run the app again for the changes to update. Has anyone else experienced this? Is there a way to sort this problem out?
If I'm working in IIS and I change something, a ctrl+F5 will always update the page with the changes I've made. I'd like the dev server to be as reliable.
I've done a search and read a few things, All i'm trying to do is set a variable in the code file and call it in the page file asp.net vb.net 3.5. I've tried like this in the code file:
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And in the design part of the page:
[Code]....
But it says that name isn't declaired. What am I doing wrong?
I'm using the code below to extract data from a gridview and populate it into textboxes for the days and two drop downs for Project and Category.
For some rows in the gridview everything but the category ddl populates correctly. If I click the row a second time the category ddl displays the correct category.
why I have to click twice for some rows? And how do I fix this?
[Code]....