in asp.net how do i create a dynamic image control from code behind?
Dim image1 As Image
image1 = New Image
image1.ID = "image1"
image1.ImageUrl = "uploads/aa.png"
i have to add the control to the web page but how?
I'm no expert with Image controls, or dynamically adding anything, but I seem to have some problem when dynamically adding image controls
When the page loads the images are "there", but they don't actually show an image...just an image "box" I guess you could call it. It's not the "broken" image or "invalid" image display, but a friendlier one that doesn't make sense to me why it's there.
I look at the page's source and literally everything's fine, but I'm not sure what's going wrong. I can show you my code, and hopefully someone will point out the dumb thing I'm doing wrong:
[Code]....
[Code]....
So, it takes all the .JPG files in the folder "Pictures" of my project's folder and creates an Image control to be put into Panel1 with the ImageURL as its filename (with Directory Path) and even set the ID to its filename (so no duplicate IDs). Again, the source is exactly how it should be, but no image is shown.
How can I convert the following aspx code into code behind code?
[Code]....
I want the following code to be craeated on the fly (runtime). I will only add the root level grid to aspx and then in page load I want to add subsequent grids.I know we will use GridViewTemplate to add the grid but not sure how to structure it. The steps that I follow:
1. set the required properties of gridLevel01.
2. add BoundFields for level01.
3. Add template field for level02 grid....but not sure how to set other required properties like color and stuff....also not sure what position to add the subsequent gridviews.
Do I need to add the child grids to root?? I know the level2 grid will be added to level1 but what about level 3?
i am using fileupload asp.net controll so how i create image preview before image uploaded
View 6 RepliesSo I'm trying to make my own forum signature generator for some friends, and I've gotten most of the work done. My real issue now is refreshing the information when the image is requested from my server.
Basically, I'm looking for someone to push me in the right direction on how to have the image refresh from the datasource when it gets requested, but only if it has been more than 5 minutes to prevent an overload.
How i can create a new view on code (on runtime) if this view dont exits?
View 5 RepliesI am creating some dynamic textboxes through javascript, when postback is happening i am loosing the controls. I can't use Ajax instead of postback and i can't create dynamic controls from code behind.
View 2 Repliesi have a product detail page,in that page i have to dynamically create div and control inside those div also dynamic,no of control based on product
View 1 RepliesHow to convert Hexacode(#669933) into images(.jpg).
View 1 RepliesI'm having difficulty trying to create and persist controls inside of a gridview during postbacks. I have an unbound Datagrid control which is created with x number of rows and y number of columns during the Page_Load event.
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During the RowDataBound event of the GridView, I create a placeholder control and then I create a label and add the label to the placeholder
[Code]....
On the first page load when navigating to the page, the grid dispays perfectly and the labels are created with no issues and I can see the "1" in every single cell of the Gridview. I basically need the labels in the cells to store an ID when the cell is clicked (the click event works with no issues, wired it all up with javascript) and Since the Cells to not exist prior to "Building the matrix" method, How can I persist the Label controls inside of the tablecells between postbacks so I can assign and read values from them.
I've read a number of online posts from 4guys from rolla and they demonstrate how to persist a handful of controls dynamically created in a staticly defined PlaceHolder conrol outside of the complicated setup of the gridview and have failed at adapting them. The golden rule seems to be to 'recreate' the controls during Page_PreInit during the postback, but I can't seem to get it working.
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This code DOES Create the Text "TOTO" but does not create image "Targetvignette"the code works ok with BUTTON object as opposed to Image.I have manually created a image with the toolbox using exactly the same credential, this displays OK.it does not catch any exception it just doesnt display anything on the webpage.I can create all sorts of control but not image [Image button] is not that better as it seams to be create but I got no image just "SUBMIT QUERY" textI am confused and stock I have tried i think every single property of the image object i could find.
I am creating an HtmlImage and I want to assign an image to it that is located inside the project ( Image/questionmarkIcon.png)
How would I do this within a server control? Can I get a grahics context to the HtmlImage and draw the image inside?
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Code sample doesn't actually work. I want the images to be self contained so I can drop the control into any project without having to worry about embedded images.
i create a control in the code behind and it dont work the exception that display is
Le contrôle 'ctl03' de type 'Button' doit être placé dans une balise form avec runat=server.
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How to access images fom database in repeater control for slide show....
View 1 RepliesI want to create a dynamic, role-based tab control that doesn't trigger a postback when the user switches between tabs.
View 3 RepliesI am doing a rework on one of my sites and I am attempting to use the asp:menu control.
I am using images in the static and dynamic menus. Hard coded at this point.
On my local machine it works fine but when I upload to the server, the image on the dynamci menus do not appear.
Instead I just get white space where the images should be.
Here is the code:
[code]
I'm using Microsoft's PivotViewer control in one of my Silverlight projects. I'm creating a JIT collection and was hoping to dynamically generate the images based on the rendered result of a WPF UserControl. In order to generate the images I'm using an HTTP Handler to serve the images up dynamically.
how I might best go about this. It's all quite a mashup of technologies and a bit difficult to know where best to begin.
EDIT: I have found a guy that's done this in ASP.Net MVC here -
I need to create a reusable custom control,which is like a form containing a listbox and some fields.The fields can be either textbox or combobox as needed for different applications,which can be selected on the property of the form onwhich page that i am using it,also i needed to specify the number of fields in that property.And also need place 3 buttons below for edit and delete the selected item in the listbox and a button to save.Data will be binded from the database as needed for different applications.
tell me with code how to create it using asp.net server control in C#.
I'm trying to create my own image viewer w/thumbnails using a datalist control. I found some ASP.Net code that utilizes another ".aspx" page to view the images. However, I wish to load the thumbnail images into a DataList control on my page and not another page. I've never done this before so I'm a little confused on the highlighted piece of code.
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im creating dynamic buttons on page load and on the click event of button1 handlere iam creating more buttons this is going fine but on click event of button 2 work is not done so how to maintain a chain of creation of button on click events
protected void Button2_Click(object sender, EventArgs e)//
{
ClientScript.RegisterClientScriptBlock(this.GetType(), ((Button)sender).ID, "<script>alert('Button_Click');</script>");
Response.Write(DateTime.Now.ToString() + ": " + ((Button)sender).ID + " was clicked");
}
protected void Button_Click(object sender, EventArgs e)//this button click will call all the items related to department
[code]....
I'm using varbinarymax.....IN SQL gridview image and setting the nullimage value doesn't this problem.. I'm looking for code that can make this lil miracle happen
& it doesn't really matter which way , whether the code says if image null then display this image from ~/Images/thispic.jpg or if i1 display this image from ~/Images/thispic.jpg for a little bit more insight into this I'm creating a legend for the database and the null has been used for displaying one pic so i'm after the 1 or visa versa to display another image.... and i'm not trying to upload pics to 1000 plus documents, and when i came at it from a sql angle tying 5 tables together the parent table ended up not sending the proper return. is this even possible or am i ahead of visual studio
How to create a Tabpanel (AJAX) add in code behind using vb.net ...
View 1 RepliesI need to create a DataList from code behind.
The structure of that DataList shold be as follows:
<asp:DataList ID="DataList1" runat="server" RepeatDirection="Horizontal" RepeatColumns="5" CellPadding="6">
<ItemTemplate>
<table> <tr><td>
<asp:Label ID="lblName" runat="server" ForeColor="Red" Text='<%#Eval("ID") %>'></asp:Label>
</td></tr> </table>
</ItemTemplate>
</asp:DataList>
I have a project where I need to create menu buttons from a list in SQL Server. The problem I am having is that I need to add code to the text of those buttons. So there would be a birthday button and it should display the number of birthdays within the next two weeks or a button with the number of upcoming events.
Clarification:
There is no code yet, just some requirements. What I am doing is querying a table to get the list of buttons to display. Now each of these buttons may have dynamic text, for things like count of birthdays, events,etc... I am trying to see what the best way would be to handle this. Should I embed a snippet of code to go along with the menu item to execute when I iterate over the menu items? Maybe I should build a javascript file to go along with the code, which I add code to query a service for certain menu items?
I am trying to put a default image in an Image control in asp.net and it should show that particular image on the page when no other image is assigned or no image available in Database.
View 1 Replies