Generate/Export An Image At Runtime?
Mar 24, 2011
I'm developing a standalone application. The purpose of it is to have no installation necessary. I'm trying to keep it as small as possible, and everything contained in the actual program, so that the user can let it sit right on their desktop. I wanted to make it possible to generate an image, preferably something transparent (.png, .gif) of a certain dimension, and export it to a certain folder. I've explored Bitmap library, but I've yet to come up with a successful solution. I'd be very obliged if someone could point me in the correct direction. Here's my current code:
Dim myPNG = New System.Drawing.Bitmap(fileName:="logo.png")
myPNG.SetResolution(xDpi:=100, yDpi:=20)
myPNG.MakeTransparent() 'creates transparency
myPNG.Save("C:logo.png")
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Nov 4, 2011
I'm using Visual Studio just to create GUIs for a project. There is no code, only the designs.
I need to convert these forms into images that I can paste into the report.
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Feb 13, 2009
Is this possible? I dont want to include a folder of all the images.I want to be able to take an image from the resource and export it to a file.
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May 22, 2012
I generate csv content type export.
added columns like "A","B","C","D" by
columns = string.format("""{0}"",""{1}"",""{2}""","A","B","C")
stream.writeline(columns);
the csv file was exported but the first column don't having the double quotes. i need double quote with every column. i tried so many ways with in that one of the way is working fine that is columns = string.format(" ""{0}"",""{1}"",""{2}""","A","B","C") -- put space before first column.
but i need result without space.
Sample Code:
Public Class CSVExporter
Public Shared Sub WriteToCSV(personList As List(Of Person))
Dim attachment As String = "attachment; filename=PerosnList.csv"
[Code]....
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Apr 19, 2010
How can I disable the Excel export option when I generate a report, via the ReportViewer, in my winforms application? In particular, I want to hide the toolbar button that refers to Excel output/export task, and not .the one that handles to the pdf export option.
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Sep 6, 2007
I want to export data into datagridview to excel, but i want to load office library in runtime: i have wrote an application that use office com library and export correctly all datagridview data to excel, but now, i want to use office in runtime, so i don't want to have a reference project of excel library.
Is it possible to load a com library in runtime and use that?
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Dec 30, 2011
method to export a resource (an .accdb file) at runtime ?I've had success in exporting image files by using :-
My.Computer.FileSystem.WriteAllBytes("filepath", My.Resources.filename, False)
Unfortunately this method dosen't enable the export of the file type I need. For various reasons the file must be exported at runtime?
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Jan 22, 2010
My project is a server/client application, how do I copy existing panel with labels and pictureboxes to show stats of clients connected? I mean once the server accepts a client, stats of that client is shown on a new panel but has the same contents as the existing panel. Any Idea how to do this? I was thinking to make a set of panels and hide them if there's no client connecting but what if there are too many clients connecting more than the set of panels already made?
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Mar 10, 2010
i am creating a table in vb.net code (htmltable) with htmltablerows and htmltablecell. I gave on image control but thatr control cant have the .imageurl property, which i need cause i have a handler image.ashx which brings image from the database.
heres' the code -
TD = New HtmlTableCell
Dim img As New HtmlImage()
img.ID = "image_" & rd("ID")
[code]....
on the last line, "img.ImageUrl" i get this error -'ImageUrl' is not a member of 'System.Web.UI.HtmlControls.HtmlImage'how do i fix this?
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Feb 1, 2012
I'm trying to update pictures boxes with images of controls stored in an imagelist owned by a control. The images stored in the control.imagelist do not showup in the picturebox. I'm working on simplifying the code to post, but for now could use help.If I store the image in a member variable owned bythe control it woks fine.Something to do with persistance of images in control owned imagelist? [code]
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May 26, 2009
I am trying to make a cnc program i have learnt a little about g-code .i want to know how i can generate g-code from an image?Also how i can use this g-code in my program to move motors?
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Nov 16, 2011
I would like to generate a .jpg file by using vb.net desktop application. Example: the program will paint a simple rectangle with grey color, and produce as a physical image file (.jpg).
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Apr 20, 2009
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles [code]...
Im getting "overload resolution failed because no access "getobject" accepts this number of arguments. "
Im trying to generate 7 different images in a group box out of 26 images when the form loads.
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Oct 13, 2011
I am in search of a way to access a files thumbnail preview and push it to a picturebox on my form. I have the code below that works for jpg files, however it does not work for say a word document's thubnail. displaying the word documents thumbnail in a picturebox would be great!
Dim myBitmap As New Bitmap("C:Doc1.doc", True)
Dim myThumbnail As Image = myBitmap.GetThumbnailImage(40, 40, myCallback, IntPtr.Zero)
PictureBox1.Image = myThumbnail
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May 24, 2012
I am trying to sort out how to save or export a excel chart to a jpg image. this is what I have so far, but is obviously not working.
Private Sub ButtonJPG_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ButtonJPG.Click
' Export chart as picture file
[Code]....
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Feb 26, 2010
I'm developing an application in VB.Net (VS2008) which allows the creation of classroom layouts. The layout is a panel and has child panels (seat objects) the seats are then populated using drag and drop and show a preview of the person sitting there.
I would like to export this panel to a printable format such as jpeg, pdf etc.I have tried using the CopyFromScreen but I can't get this to only output the layout panel. (some of the panel could be off the screen at the time of export)I have also considered using HTML outputting each seat as an absolutely positioned div container. Then printing the HTML page.
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Oct 22, 2010
I'm trying to let the user import an image in my windows application, in any pixelformat, but i need to save the image in 16bpp4444 format, and that is not an option for pixelformat in .Net imaging class.
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Feb 6, 2012
i am have one datalist in asp.net i m using vb with asp now my code is just as follow
<table border="0" cellpadding="0" cellspacing="0" >
<tr>
<br />
[code]....
all this in datalist as you can see so it will be repeated..i have put one image in it now i want call a method when any image will be clicked i make one sub called s() in vb i want to call it i use on clientclick() event but doesn't work
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May 17, 2010
if this is the case.What I'm trying to do:1) have a way to save / copy screenshot from an Air app2) automatically paste such screenshot into a new powerpoint slide in the current presentation
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Apr 15, 2010
I'm creating a radio streaming application, which plays a live stream from various radio stations in a small 'gadget' like application.
The user can add his own custom radio stations, by supplying a Name, a StreamUrl and, optionally, an Image that represents a logo or something of that radio station.The logo will be drawn on the main form when that station is selected.
I need to be able to save these custom stations, and I think it makes sense to use an XML file, which could then look something like this
<CustomStations>
<Station>
<Name>Radio 1</Name>
[code]....
Before I added the support for images, this worked fine, how to store the images. I want the user to be able to select any image from his harddrive, but I don't want to force him to keep that image in the same location afterwards. So I can't rely on the path that he selected. Instead, I want to simply load the image from the path he selected, and then save it somewhere else.
I am storing the XML file in the common application data path which I think is a good place for the images too.The problem is, how to determine a name for the images? I will always have just one image per custom radio station, so it makes sense to me to simply have one Images folder that holds all images, with a unique name.I can see two solutions:
1. Generate a random filename for every image
2. Use the Name of the radio station as the image name
For option 1, I suppose I could just create a string of 16 random characters and call that the filename. The problem of course is that there is no guarantee that I will get a unique filename. Yes, the chances of generating the same name twice randomly are very tiny, but it's still possible, and I just don't like that. How can I ensure that my random filename is unique? I suppose I could always drop the whole thing in a While loop that continues when the new filename already exists, but there must be a better way... Is there nothing in the framework that allows me to generate a unique random filename, in a directory of my choice (so not in the Temp directory...)
I like option 2 much better. The Name of a radio station is unique (there can't be two stations with the same name), so I don't have to worry about filenames conflicting. The problem with this approach is that there are no restrictions on the name. There's nothing stopping the user from naming their custom station "Radio~/aij!""_.fe" or something like that, which is obviously not a valid filename... So, I will have to do 'something' to generate a valid filename from the station name. I could simply remove all non-valid path characters from the name, but then I am no longer guaranteed a unique filename... Suppose there's two stations, one called "Radio/1" and one "Radio1", then after removing the invalid "/" character, the names will be the same and so I will generate the same image path for both....
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Mar 11, 2009
i have tride to generate report by using in built functions of report viewer. but it disply only the default color in to the legend. in my report i am showing chart report by using student marks and their name. the chrt bar color get changed as per the students marks means if student is pass then the the report bar display with green if failed then with red color i want to show the legend with student pass and fail status but on my x axis i have given a only a marks column value and it s showing only marks lable in legend but i want to show it with their status means pass with green color and fail with red color if anybody have the answer of this query plz reply immediatly
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Jan 26, 2010
I am developing an application using VS 2008/MySql and I am trying to export the crystal report on runtime using my own code. I get an error saying:
Quote:Invalid export DLL or export format.
My code is:[CODE].....
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Sep 10, 2009
more than one picturebox is create at runtime. i have the menu strip called "1" and "2". when i click the menu "1", i want the picturebox image to change to whole.png . when i click menu "2" i want the picturebox change the image to half.png. the images is on my resources. when i try to do, picturebox.image = my.resources.whole, i give me this error "Object reference not set to an instance of an object.".
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Oct 6, 2010
I have done this below program keeping the picture box property dock=None.And the below code works fine.
Imports System.Drawing.Drawing2D
Public Class Form1
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
[code]....
i.e Dock=Fill And i stretched the form in the design mode... now the circles in the image are not proper...I want my program to work with the Dock property set to Fill?
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May 8, 2012
Image is not Showing at Runtime
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Jun 23, 2010
I have a picture box that i want the user to be able to move at runtime of course....he will click on the picture and while clicking the mouse down he can move the picture and when he release the mouse the picture stays at the location ....i searched the net and did not find any usefull articles ..
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Oct 9, 2011
I would like to add an image to a crystal report at runtime.
I am currently doing this using a second data table containing only a byte field and then a blob field on the report. However this feels like a hack and if there is no data in the first primary table then for some reason the image does not show.
Is it possible to add an image with code or another method?
I'm using crystal reports for visual studio 2010. Winforms project. Either C# or VB.
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Apr 14, 2010
[code]...
I'm trying to change the treeview image at runtime, i'm trying to apply the above code but nothing is happening. the goal is that i have an image i want to change it to another image at runtime.
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Dec 9, 2010
i have a program i've made a while, and one of the users wants to be able to load his own images to the background instead of the plain grey that is there now. i've searched and searched, and basically can get this working
BackgroundImage = Image.FromFile("C:UsersMeFileName.png")
i just slapped that onto a button just to get it to work as i was experimenting. but that only works for a file of that name, on my computer, in that folder. what i'm looking to do is get it so a user can browse his own directories for images and upload them as the background on the form. and be able to save the settings as well. but so far i have only seen different ways to load preset images that you can load. if it's even possible? i'd assume that you'd use the openfiledialog command, but i'm not that well versed in vb as of yet.
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Sep 17, 2009
with the below codings how can i locate the image in the browser at the runtime
using System;
using System.Collections.Generic;
using System.ComponentModel;
[Code].....
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