using vb.net 2005.I am reading an image using a FileStream object and wondering this: is there a way that I can check what the dimensions are of a file before I read it using the FileStream object? the code I have now is like this:
[Code]....
I want to show image with size.when the cursor will hover to image it will show size like google image.
View 1 RepliesHow to upload images with some conditions
Like
size not gretr than 50 kb
with = 110px, height 140 px
etc..
Given a URL to an image (and not the image itself), what's the most efficient of getting it's dimensions? I would like to change the height and width attributes in the image tag (<img>) if it is greater than 200x200. However, if it's smaller than that, then I'd like to keep the size as it is. (I'm using ASP.NET/C#)
View 4 Repliesm using asp.net 3.5 and c# on my website.Here is myquestion:I have an upload button and asp:Image on a page. An user can upload an image from his computer and that image will be displayed in the asp:image. But before I display the image, I would like to check the width and height of the uploaded image. How do I do this?
View 3 RepliesIm getting some images from a webpage at a specified url, i want to get their heights and widths. I'm using something like this:
Stream str = null;
HttpWebRequest wReq = (HttpWebRequest)WebRequest.Create(ImageUrl);
HttpWebResponse wRes = (HttpWebResponse)(wReq).GetResponse();
str = wRes.GetResponseStream();
var imageOrig = System.Drawing.Image.FromStream(str);
int height = imageOrig.Height;
int width = imageOrig.Width;
My main concern with this is that that the image file may actually be very large,Is there anything I can do? ie specify to only get images if they are less than 1mb?or is there a better alternative approach to getting the dimension of an image from a webpage?
I have file upload UI element in which the user will upload images. Here I have to validate the height and width of the image in client side. Is it possible to find the size of the image having only the file path in JS?Note: If No, is there any other way to find the dimensions in Client side?
View 4 RepliesI have many image in my page my images size are between 100 -200kb I want redeuce my images size to 4-5Kb ... How I can do it? is there any control to do it?
View 1 RepliesI use fileupload control to upload image below is code:
protected void BtnUpload3Img_Click(object sender, EventArgs e)
{
uploadImageError.Visible = true;
if (fup3.HasFile && fup3.PostedFile.ContentLength < 102400)
[Code]....
in above code I define format of image that user can upload .png or .jpg image and size of image should be lessthan 100KB now I want define that users just can upload images with dimension 1007*143 how I can do it?
I need to know, how to add a validator in Ajax AsynFileUploader which will validate the image dimensions.
View 8 RepliesI am using if (document.getElementById('<%= MainImg.ClientID %>').complete) {
hideLoadDiv();
}
to hide a div which indicates the image is not loaded yet,but it hides before the image has finished loading and is shown, while the browser is giving me a message that the page is still transferring data from the server :S
Is there another function I can use to make sure that the image is fully loaded?
In trying to upload images to a server, I often get the following error "Maximum request length exceeded.".
I have tried to check for the size in codebehind but it appears that the error comes from the service provider or something else because I never even get to debug it since the error appears even before the Page_Init Subroutine in codebehind.
What is the best method of checking for the image size and then resizing it dymamically to a maximum file size as well as length and width size.
I have a form that will accept and save a MP4 video file. I need to be able to get the dimensions of the video as well. This will be running on a server running ASP.NET 2.0 so any external libs must be able to be placed in the Bin folder as they can not be installed on the server.
how to get the information? If the same lib would let me transcode the video to flv that would be a huge bonus.
Update: The server is XP Service Pack 2 with .NET Framework (2,0,50727,0)
I'm taking input from a user and need to stick it into an array, the problem is, I don't know ahead of time how many dimensions the array will have and I also don't know how many items the user will want to stick in each dimension.The array will have a maximum number of dimensions of 4, but an unlimited number of items per dimension.I'm trying to create an unordered html list creator, so I need to know the number of items in each level of the list, and since (As far as I know) you can't create a multi dimensional array with a dynamic size
View 7 RepliesIs it possible to specificy height and width dimensions of the ImageUrl attribute in a <asp:HyperLink> control? I tried setting the height and width attributes of the HyperLink control thinking the picture specified in the ImageUrl attribute of the HyperLink control would be resized to the dimensions of the height and width attributes but it wasn't.If I can't somehow resize the specified image for the HyperLink Im gonna have to scrap the control and do it the old fasioned way. By using a regular <asp:Image> control inside an <a href>.
View 3 Replies I want to achive on functionallity like below.
I want to Dispaly image after image selection.so Users can see image at that moment.
I have a asp.net web app that needs vfpoledb dll installed on the server to work. I wanted to check to see if this dll is installed and if it isn't display a message and link to install it. I have no idea how to go about this. Can someone give me an example of how to do this check in code for an asp.net C# app?
View 1 RepliesLets say there's a table Table1 with Primary key as "MainID" and this MainID is being used as a Foreign key in many tables.
Now when I try and delete a record from Table1 who's MainID as foreign key is being used in some child tables, then it throws this exception that "Foreign key conflict n stuff"..
Now I want to design my Delete Strored procedure in such a way that first of all checks ALL the child t ables that have that foreign key column "MainID" and if MainID from Table1 is being used in any of the child tables it should return 0 . Based on this 0 value I want an alert box to show that will say "Still in use or watever" and wont let the user delete that record unless ALL the records in child tables have been deleted that were using that mainID from table1.
I can't use ON DELETE CASCADE. I want the user to delete child table records manually one by one. Only after child table records using the MainID have been deleted that the user can delete record from Table1
I Used AsyncFileUpload(one of Ajac Control Toolkit Controls) to Uploading User's Image. this works well. But i want to change the image url of an image contorl to uploaded image url. how can i perform that? I put Image control in a Update Panel:
[Code]....
in C# code I wrote these:
[Code]....
But it does not work. Image is like Previous. Note that ImageOperations.ResizeFromStream() method resizes and saves the image to a specefic folder. actually I should trigger a Postback to Update the Update Panel but How to do that. I usedUpdatePanelNew.Update(); but it does not work!
I have a fileupload control in a contentplaceholder in a masterpage. I have to preview the image whenever I browse an image beside it in an imagecontrol.
My application is running on a different server .So I can't give the filepath of my local system.
Also I don't want to store the image in any location and i'm not supposed to use any session variable to pass it to generic handler.
protected void rptNavigation_ItemDataBound(object sender, System.Web.UI.WebControls.RepeaterItemEventArgs e){
if (!((e.Item.ItemType == ListItemType.AlternatingItem) || (e.Item.ItemType == ListItemType.Item)))
{return;
}string Name = string.Empty;
if (IsDBNull(e.Item.DataItem["FullName"])) {
Name = String.Empty;}
else {Name = (string)(e.Item.DataItem["FullName"]);}
Literal ltlLiteral = (Literal)(e.Item.FindControl("ltlLiteral"));
ltlLiteral.Text = Name.ToString();
I get error for IsDbNull - Error 1 The name 'IsDBNull' does not exist in the current context. What's the best way to check for null values returned from db? also I get errors on both lines where (e.Item.FindControl(ltlLiteral")); is present ERror: Cannot apply indexing with [] to an expression of type 'object'
I am making a class with an optional paramiter which will be a List<> paramiter. I want to set it's default value to null so I have used List<Params> Param = null. What am not 100% sure is checking the list to see if it was set to null or not. Is using:
if (Param == null)
.NET noob here (as in I know next to nothing, I'm trying to pick up some of the scraps left by my developer). Ok, I am getting this error on a number of my .aspx pages: Error while checking url '/': Key cannot be null. Parameter name: key Interestingly, I get this on my homepage on which the only .NET code is in the form of two includes, e.g: <% Response.WriteFile("/includes/footer.aspx") %> These includes in themselves only contain HTML, so I assume the issue can only be related to these or a configuration issue?
View 4 RepliesI have an application where I use the AJAX Tabpanel. It works 99 times out of 100. But sometimes a JavaScript error appears on the site saying that the Tabpanel cannot be found.
What I want is to check the site for JS errors and if JS errors appear then I will reload the site. In Pseudo-code:
Code:
If noJavaScriptErrorsAppear then
Ok
Else
reloadTheSite
Endif
Is that possible to implement in the serverside code e.g. in the page events?
I'm looking for some code to do a page rank check on a given domain provided I pass it a URL string in ASP.net. I have been unable to find anything and I have been searching for days.
View 2 Replies