I tried to export my canvas to a file. First I tried to export it to a png and it worked fine, everything looks the same as on the canvas.After that I modified my code to export to a xps file.
Dim thePack As IO.Packaging.Package = IO.Packaging.Package.Open(path.LocalPath,IO.FileMode.Create)
Dim doc As New Xps.Packaging.XpsDocument(thePack)
[code]....
I have about 3-4 canvas controls and each contains about 750-1200 paths.Users needs to make some transform to them and I use for that a global
Canvas SelectedCanvas;
Initially (in the constructor) SelectedCanvas takes the value of one my canvas controls.
SelectedCanvas = canvas1;
[code].....
Is there a control or something similar to a canvas with a margin(ruler), like in MS Word,in .NET WPF or WinForms?
I need to place some custom elements inside that user can modify in that canvas.
I have a canvas in the middle of my application with controls around it. I have a socket that recieves Points and saves them in a list.
I draw small 4x4 rectangles on the canvas for the number of points in my list.. say theres 4 points.. theres 4 rectangles.
I want to be able to move the rectangles when the points change with code.
is this possible without storyboards or any 'animation' class?
I have tried:
'cMap.Children.Remove(r)
'Dim nr As Rectangle = New Rectangle() With {.Width = 4, .Height = 4, .Name = "r" & P.Name, .Fill = Brushes.Red}
[Code].....
I am trying to convert some old VB6 code to VB.NET. The VB6 uses a Canvas control, simply
Dim cv as Canvas
I cannot for the life of me figure out how to use the Canvas control in VB.NET (using VS2005). MSDN says it is in the System.Windows.Controls namespace, which doesn't seem to exist? All I see is System.Windows.Forms, which doesn't include the Canvas control.
Finally took the plunge for wpf, all was going well until i needed to do a simple drawing on a canvas control (presume this is the right surface to use). First thing i noticed is that there is no paint event in wpf so i looked at a few others (Initialized, layout updated) at this point i looked under google and found very little on this. would anyone here have or know of a tutorial to allow this functionality? My application (a testbed) will draw an archery target within the canvas along with score numbers in the correct place as follows to do this it will need to draw several filled circles with black (or white) borders and text objects in the correct position. the locations and widths of the circles will be determined using a simple algorithm so my question is on the structure of paint events within wpf, are the commands the same as in gdi+?
View 3 RepliesSo I built myself a simple program to work out the kinks of drawing in my programs. I have a button that I press that when the textbox.text reads 1 it then draws a line of a specific height, color and position, the problem is when I click that button again it will crash informing me that...
"Specified Visual is already a child of another Visual or the root of a CompositionTarget."
[code..]
I know where the problem lies, its with the Canvas1.children.add(line), cause its telling me the line variable is already been used or in use on the canvas, I'm just unsure of how to turn that into a solution that will allow me to click the button a hundred times or more without being forced to MANUALLY make a hundred or more individual variables to store the line.
I have an application that generates a replay of Air Traffic and I need to allow the user to capture parts of the canvas so it can be exported as a BMP of GIF. I did this in VB6, but not sure how to do it in WPF. I plan on drawing a rectangle around the intended capture area following the mouse till the user triggers the capture.
View 1 RepliesI have a project in WPF 4 and vb.net 2010.
I have a canvas inside a window. The window is full screen, but the canvas is set to a solid 640x480 in the center of the window. I need to get the mouse position inside of the canvas, but NOT inside of the window. How do I do this?
I convert a SVG to canvas using canvg to an image and then vb.net client side I convert the image to bytearray() and saved it to a folder on my server so I can attached by email :
Protected Sub Button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles Button1.Click
Dim path = Server.MapPath("PDFs")
Dim fileNameWithPath As String = path + DateTime.Now.ToString().Replace("/", "-").Replace(" ", "-").Replace(":", "") + ".jpeg"
Dim fs As FileStream = New FileStream(fileNameWithPath, FileMode.Create)
Dim bw As BinaryWriter = New BinaryWriter(fs)
[Code] .....
This code works fine and it send the image. Actually I don't need to save this image to my server I just wanted to send it without saving, this is what I have done so far.
Protected Sub emailSend_Click(ByVal sender As Object, ByVal e As EventArgs) Handles emailSend.Click
Dim customerChoice As String = DropDownList1.Text
Select Case customerChoice
Case "pdf"
[Code] .....
How to display canvas element of HTML5 in Visual Basic .net 2010 webbrowser (I try in framework 2 and 4, WebBrowser version 2 and 4)? It seems that VS2010 not support new version of HTML. In Microsoft Web Browser - "AxWebBrowser" didn't work too. Any idea to make this thing work?
View 1 RepliesI created a paint type program for signatures, and now I would like to save my canvas as either a jpeg, bitmap, or gif file, but I am unsure how to go about this. Here is my code,[CODE...]
View 4 RepliesI'm making a drag and drop application and when I'm dragging an element inside the canvas the brush displays the element when the coordinates are negative this gives a weird resize in the brush witch also displays the negative elements.
How can I make the visual brush only draw the real size of the canvas, or the positive children of the canvas?
What I need is some formula to calculate font size of TextBlock for its owner - Let's say I have Canvas height 100.0 then which TextBlock font size should be to fill all space of the Canvas?
P.S. The main problem is that I scroll those TextBlocks horizontally...
I'm trying to make a very simple Silverlight application.I want it to be full-screen, and I want to draw a line onto a Canvas.My problem is that the .Width and .Height of the canvas never seem to have a valid value. The website shows the canvas at 400x300 pixels or so, and when you click on it, it goes into Fullscreen mode.I want to use the Height and Width to find the usable space of the screen. I've tried adding events (thinking that the canvas wasn't yet ready to be used immediate after the full-screen line of code) but the LayoutChanged and Resized events don't seem to yield anything.
View 1 RepliesI have this xaml:
<Canvas Width="75" Height="75">
<Button x:Name="button" Background="Olive" Canvas.Left="0" Canvas.Top="0" Width="75" Height="75" Click="button_Click"/>
[code].....
Under the MouseLeftButtonUp event handker store the first coordinates of the lines second endpoint. Then call the length method to obtain the distance between the two endpoints(the lines length). Fianlly display the line on the canvas and the line's length in the Length=Label. Below is the code I have so far. There are no errors, but when I run the application nothing happens.
Private Sub lineCanvas_MouseLeftButtonUp(ByVal sender As Object, ByVal e As System.Windows.Input.MouseButtonEventArg... Handles lineCanvas.MouseLeftButtonUp
Dim distance As Double
endPoint = e.GetPosition(lineCanvas)
[Code].....
Silverlight project with tabcontrol hosting canvas objects. I want to wrap my entire tabcontrol with a scrollviewer so that on a short display you can scroll vertically to see the whole area on my canvas.When I run my project my scrollviewer vertical bar is always showing even when there's more room vertically than needed for a scrollbar.
All I am trying to accomplish here is a min resolution of 1280x768 to be scrollable and anything bigger than that have the scrollbars hide. My laptop is only 768 tall, but my canvases were developed with 1280x1024 in mind. So I would like a way to set this up so that everyone can scroll or just see the canvas all at once depending on their resolution.
Anyone have any ideas why it is always visible? I've tried setting canvas width and height. I tried setting stretch on alignments on the outer grid. Saw both those tips while searching other issues similar to mine.
Some code:
<Grid x:Name="LayoutRoot" MinHeight="768" MaxHeight="1024" MinWidth="1024" MaxWidth="1280" Background="#FF6A6868" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="0.775*"/>
[code]....
....lots of child canvas items in my "Main Floor" canvas. Child canvas objects contain lots of path objects. None which are taller or wider than the main floor canvas width/height.
<sdk:TabItem Margin="0" Header="Mezzanine">
<Canvas x:Name="Upstairs" HorizontalAlignment="Left" Height="1000" UseLayoutRounding="False" VerticalAlignment="Top" Width="1280">
..another tab. Same deal with child canvas objects.
What code can I use to export a report in microsoft reportViewer to a .PDF file? I do not want to use the export button embedded in the report viewer. I have to code my own button.If it feels like life is crashing down on you, check for null references.
View 3 RepliesI am attempting to create a CSV file based on a datatable I am using in VB.NET
I can successfully write the data table to CSV format however my problem is that because the default data type for the columns in the CSV file are General ,any Text I pass through with Numbers in it that are preceded with zeroes (i.e. "001") will get written to the CSV file as "1" without the 0's. I need this to be treated as a text string so "001" gets written in to the CSV file.
Is there any way to do wthis or specify through code what data type the column will be?
Here is a sample if the code I am using:
[Code]....
I need to be able to export data from an sqlserver to an xml file (just a flat data dump) using visual basic coding - using just your basic select statement.
View 17 RepliesI use some code to successfully resize and save images - but I want to save the image to 800x800 px size on a canvas of 900x900px so it has a white border type thing around it.
View 8 RepliesI am unable to export my data into excel.
Dim sqlString As String = "spExportRateProfile" & Session("OfficeNumber") & "," & Session("SalesRepID")
Dim conn As SqlConnection = New SqlConnection(Utils.GetConfigKey("ConnectionStringVimas"))
conn.Open()[code]....
What do I need do after this to export my data to excel?
I am trying to export a datagridview ti excel, but i get an error I do not quite understand.I have made two click-events using two buttons looking like this: [code]Button 1 fills the datagridview and in works, but when I get try button two I get an invalid index error pn the line highlighted in red.
View 2 RepliesI am exporting a datagridveiw to excel, this works fine. As of now there are columns and headers that i needed to add to the excel data that did not exist in the datagridveiw. This also works fine, the data is held in cells a2:f2, now i want to take this data in these columns and filldown to the last filled row of the excel sheet. In this example lets say i have 49 rows of information, i want to take a2:f2 and copy it down to the 49 row of the excel form. Below is the entire code of the export process, i have noted where i need this code to go with , i am not sure if i should just use a for loop, which i have tried to no avail.
[Code]...
I have a datagridview(DGV) which contains data based on a user selections from a pre-defined dataset
In point form:
User starts program
program builds datatable
user opens file and program read all data from file into the dataset.datatable
user defines the data they want to see
program displays datagrid based on dataset.datatable and user choices. (basically it displays the whole dataset and removes unwanted columns
ecords)
I want to be able to export the datagrid to excel (not sure which method yet). I have tried the excelexporter component i found somewhere on the msdn forums (it exports the data to look exactly like the datagridview) but its painfully slow. It exports something in the region of 100 records per minute. Most of the time, the datagridview can contain anywhere from 3000-32,000 records. As such, at 100 records per minute, the excel generation can take updwards of 50minutes. Unacceptably slow for the purposes of the program.
What do people recommend as the best method to quickly dump the contents of a datagrid into excel. By quickly, im talking at the speed of about 10,000 records per minute. In all honesty, anything over 5000 records per minute will be fast enough, but the quicker the better!
Is there a way of creating a new dataset.datatable that is built of the contents of the datagridview and then building an excel sheet by connecting to the new dataset?
I would like to be able to export to Excel 2000-2003 at a minimum, but if i can do excel 97 as well it won't hurt.
I need to export data from a sql table into an existing excel spreadsheet (not create a new one) in Visual Studio 2008.
Here is the code I am using:
Dim SecFileName
As String =
"C: est estfile.xlsx"
[Code]....
I get an error saying the external table is not in the correct format. I assume taht means the existing spreadsheet. But I have verified that I have the same number of fields (i.e. columns) as the spreadsheet I am inserting the data into.
I need the code for exporting the content of aspx report(which is a static page without any html components butcontains css style) to excel sheet without using any asp.net components like datagrid or any other.I need the complete
View 3 RepliesI found some code online that describes how to export from a DataGrid to a CSV file.
It creates strings just fine, but when I go to save it (writeline) it breaks.
First, here's the code.
[Code]...
i am doing a VB program using four for loops to generate a set of numbers using the following code.[code]i need to export the output of this program to CSV format.
View 3 Replies