I am using an anchor tag in my application for which I am assigning href an image url which i am saving in code behind. Images are saving perfectly from code behind but are not updated in anchor tag. I think this may be a browser dependency because I checked the property of fresh page rendering in IE option then all the things are working fine but this is recommendable.
View 1 Repliesi have started to do a Asp.net Website Project...Am given few Images , to place it according to the requirement Web Page Sample image given by the client....Am just wondering how to calculatethe exact dimensions of the various parts of a page for Placing Images Perfectly.
Am using Html Divs , Css and a tool called WebPage Maker..Using WebPageMaker Tool i can place images and by running on a browser ,i can calculate the dimensions of that particular part[ For Ex:Header Image] by using FireBug Tool.....
But when using those dimensions[Left,top,Width& Height], at asp.net page by using Divs & CSS...Total page gets collapsed and images just run away.........
Whats the best Approach to do this..??
As of now,am given Few images[Cut], and the original required Image..On seeing that , i should place images accordingly...
But Am not able to calculate dimensions for using at Html Divs and CSS in a ASp.net Page..
I have always been banging my head for this:
Why <a runat="server" onclick="CodeBehindFunction()"> does not work (in simple html without databound controls) even if we make it to run at server?
(I know we can always replace such anchor requirement with asp:LinkButton as it ultimately get rendered as anchor in html.)
For my project, i have decided to use AjaxControlToolkit's ModalPopup controls. I have obtains codes from this website: [URL] After following all the steps provided by Matt, I am getting some problems when i want to save my edited information. Scenario 1: Select the first item from the gridview, modify the details at the details view and click save, gridview updates and shows the edited information and it is stored into the database.
Scenario 2: Select the second item onwards from the gridview, modify the details at the details view and click save, screen remains at detailsview and edited information is not saved, click cancel button to return to gridview, data at the gridview was not updated. So basically, the update function works only for the first item from the gridview. The following is parts of my code:
<%-- Display list of Activities according to the Project--%>
<asp:UpdatePanel ID="UP_ActList" runat="server" UpdateMode="Conditional">
<ContentTemplate>
<asp:GridView ID="GV_ActList" runat="server" AutoGenerateColumns="False"
DataSourceID="SqlDS_ActList" DataKeyNames="dbID"
OnSelectedIndexChanged="GV_ActList_SelectedIndexChanged">
<RowStyle BackColor="#EFF3FB" />
<Columns>
<asp:BoundField DataField="dbID" HeaderText="dbID" Visible="false"
SortExpression="dbID" ReadOnly="true" InsertVisible="False" />
<asp:BoundField DataField="ActID" HeaderText="ActID"
SortExpression="ActID" />
.......Other BoundField were deleted for this post purpose............
<ItemTemplate>
<asp:LinkButton ID="LinkB_ViewActDetails" runat="server"
Text="Edit" CommandName="Select" CausesValidation="false"></asp:LinkButton>
</ItemTemplate>..............
Any way to compress bitmaps, jpeg, png images for space. The reason being i have a webform that takes in n number of images from a user and stores it to a mapped drive. what i want to do is compress those images to optimize on space on the drive.
View 1 RepliesI am trying to render a simple hyperlink that links to a named anchor within the page, for example:
<a href="#namedAnchor">scroll to down</a>
<a name="namedAnchor">down</a>
The problem is that when I use an ASP.NET control like asp:HyperLink or HtmlAnchor, the href="#namedAnchor" is rendered as href="controls/#namedAnchor" (where controls is the subdirectory where the user control containing the anchor is). Here is the code for the control, using two types of anchor controls, which both have the same problem:
[code]....
I am using the HtmlAnchor or HyperLink class because I want to make changes to other attributes in the code behind. I do not want to introduce a custom web control for this requirement, as the requirement I'm pursuing is not that important enough to justify abandoning the traditional ASP.NET link controls. It seems like I should be able to use the ASP.NET link controls to generate the desired link.
i want to do this thing in c# code behind file.i want to check first wheather user click on it or not.if user click on that anchor tag then i want refresh div....
basically my div contain advertisements.every time when user click on anchor tag then new advertisements will be add in div..
normally on would use the following :-
aspx page:-
<a ID="a1" href="javascript:void(0);">Link1 </a>
code behind:-
a1.HRef="www.mySite.com/mypage.aspx";
how do u set this HRef attribute in case the anchor tag is within a repeater ?
aspx file
<ul>
<asp:Repeater runat="server" ID="rpt1" OnItemDataBound="rpt1_ItemDataBound">
<HeaderTemplate>
<li><a id="a1" href="javascript:void(0);" runat="server">Text</a></li>
</HeaderTemplate>
<ItemTemplate>
<li><a id="name" runat="server" href="javascript:void(0);">
<%# Eval("Name").ToString() %></a>
<asp:Label runat="server" ID="lblID" Visible="false" Text='<%#Eval("ID") %>'></asp:Label>
</li>
</ItemTemplate>
</asp:Repeater>
</ul>
Now there are five items in the ItemTemplate of this repeater..what i want is to set class of each of the anchor tags as "mySprite id1,mySprite id2 , mySprite id3 and so on.."
for that I did this in code behind...
for (int i = 1; i < 6; i++)
{
Name.Attributes.Add("class", "sprite id" + i);
}
Now when I view page source, ALL my anchor tags have got class set as class="sprite id5"
How can I save images in SQL Server 2005 and then read them using VB .Net 2010 and telerik:RadBinaryImage.
View 8 RepliesI've seen on some sites where one is unable to save the images from that site. Is there a property or something that I would use where I can prevent users from saving images from my site?
I'm using VS 2008 and asp.net 3.5
I am developing a Web Based Art Gallery. I need to save images to a folder and then retrive them.(I don't want to save images to a database) How should I proceed on it?
View 7 RepliesI need to take an uploaded image, resize it, and save it to the database. Simple enough, except I don't have access to save any temp files to the server. I'm taking the image, resizing it as a Bitmap, and need to save it to a database field as the original image type (JPG for example). How can I get the FileBytes() like this, so I can save it to the database?Before I was using ImageUpload.FileBytes() but now that I'm resizing I'm dealing with Images and Bitmaps instead of FileUploads and can't seem find anything that will give me the bytes.
View 3 RepliesI've inserted some changes into the page in which the gridview is nested, and I'm not sure what I did, but it managed to somehow disable the "Update" button operation.When I click on "Edit" - It goes into edit mode perefectly. But when I click on "Update" the page refreshes itself without doing anything (it stays in Edit mode).As I mentioned, everything worked great until now, but a small change somewhere probably gets in the way. The changes I was talking about were adding some ajax into the page, but most of it was ultimately left out. (No UpdatePanels what so over... Only a TextEditor, that I had there before).
View 8 RepliesI have a trouble in saving an image to a folder on local server which is sent to the server using AJAX.
The image on the canvas of HTML5 is taken using Canvas.todataurl() function.
[code]....
Without opening savedialog box, the image has to be saved to a folder on local server with a filename given to it.
How should i go about this?
I have a work request web page that now has a need for my users to add screenshots to.
View 2 RepliesI was trying to update a detail view from code behind (vb.net). I know how to fire the event but dont know where to put the DML query where i should do update and insert, i mean in which event?:
update.aspx
[Code]....
update.aspx.vb
[Code]....
No error but is not working.
I am building a website using asp.net and this website will host users images and will give them options to edit these images by resizing, cropping, watermarking,.... am thinking of 2 ways to save images and want someone to recommend one or advice me with something different better.1- The user will upload his images, i will put them in a folder called "original" then the user will edit these image, i will put the edited images in a folder called "edited" also will have another folder called "thumb" will contain thumbnails from these images for previewing on the website.
View 1 Repliesi am new to asp.net mvc,we have loading images for form when we are saving or deleting ,we have written that code in master page and its working fine,but the thing is we are using a inline popup within asp.net mvc form,by using div tag we are developing a inline popup in asp.net mvc,when we are saving data in inline popup in this case loding images is not displaying on the pop up.
View 2 RepliesI am facing a problem with retrieving an image and showing it on asp.net grid. I migrated MS Access database to sql server. Image are visible in Crystal report when fetched from the same database (migrated sql server database). But same images are not visible in ASP.Net grid view or simple asp.net image control. Following is my code
SqlConnection oConn =
new
SqlConnection(ConfigurationManager.ConnectionStrings["csr"].ToString());
oConn.Open();
SqlCommand oraCmd = oConn.CreateCommand();
oraCmd.CommandText = "select top 1 photo from [test] where photo is not null";
SqlDataReader dr =
null;
dr = oraCmd .ExecuteReader ();
if(dr.Read ())
if (dr["photo"] !=
null)
{
Response.ContentType = "image/gif";
Response.BinaryWrite((byte[])dr["photo"]);
}
This function is getting called from another page . "hlopen" is hyper link in the grid. hlopen.NavigateUrl = "GetPhoto.aspx?id=1";
I've generated QR code using the code given on your other site.How to save the QR code as an image?
View 1 RepliesHere is what I am basically trying to accomplish I want to upload images to the server separated into categories and save the file path into the database. I have found plenty of documentation on saving to a file and the file path to a database. But, I haven't found anything that will allow me to seperate the images into categoies.
I have made three tables in the database
[code]....
What I am trying to do is create a gallery for our clients to browse and download different vesions of posters and ad cards.
I have a webform that accepts a date range to generate PDF reports. I had to place a PostBackTrigger on the updatepanel and assign the button thaat generates the reports because the Response.ContentType is being set to "application/pdf".
The problem is I am updating the textbox value to the count of clients that are left out of the report generation in server side code, the count always come back as 0. I have tried multiple panels with no luck. The textbox is in the main updatepanel with the print button and that still does not work.
[Code]....
I have a page that shows the value of a property of my model. The value of that property is changed in the action-method of the controller (that recieves the model as a parameter). It turns out that this line of code:
<%= Html.TextBoxFor(m => m.Problem)%>
does not represent the value that it got in the action-method-code (just the value it got from the POST), but this does:
<input type="text" value="<%= string.IsNullOrEmpty(Model.Problem) ? "" : Html.Encode(Model.Problem) %>" />
Is this a bug or is some caching-mechanism working against me?
BTW, it is especially annoying when using HIDDENs, because the user can never change that value at all... That's how I found out...
I have a demo-project demonstrating the problem here for download. It is based on the default-application, so very small.
I'm using a hidden field to store a value in an asp.net page. Basically I set the value of the hidden field whenever a value on the form is changed i.e. first name, date etc. The field is on a webform that has a master page and is in the content section:
<asp:Content ID="Content2" ContentPlaceHolderID="MainContent" runat="server">
<asp:HiddenField ID="hdnDirtyFlag" runat="server" Value='false' />
I change the value of the field in javascript by calling a function whenever an onchange event fires in other controls on the web form:
<asp:TextBox CssClass="niceInput" ID="tbFirstName" runat="server" MaxLength="40" Width="150" onchange='SetHiddenVariable();'></asp:TextBox>
<script type="text/javascript">
function SetHiddenVariable() {
// Set the value of the hidden variable so we know a field has been updated
var hiddenControl = '<%= hdnDirtyFlag.ClientID %>';
document.getElementById(hiddenControl).value = 'true';
}
</script>
So far so good. When the page loads the hidden field value is 'false', and if I don't change any values on the webform it remains false. Whenever I do change another control the javascript function gets called and the hidden field value gets updated to 'true'. Again this is all fine.
After I submit the form and update the database, I set the hidden field value back to 'false' in the code behind:
hdnDirtyFlag.Value = "false";
But when I click another button and do a postback, the hidden field value is still at 'true'.
Can anyone explain why this is? I stepped through the code behind and immediately after changing the value I can see the value is 'false'. There is an asp:UpdatePanel on the page but the hidden field is not part of this panel.
EDIT:
This is the code I use to check the value of the field in code behind in the second postback, after it has been set to false in the last step of the first postback. The value remains at true for some reason in the second postback, after it has been set to true in javascript on the client side then set back to false in code behind as shown above:
if (hdnDirtyFlag.Value == "true")
{
UpdateSecurityObject();
}