I know some of you have been aware of my great frustration with the DataGridView control's rendering problem, and of my frenetic efforts to figure out a way around it. Well I stumbled upon the solution, posted by an obvious genius here: [URL] One of the responses to the post (which is in C code) showed how to do this using Visual Basic code.
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I'm filling a DtatagridView as usual, using a datatable as datasource and I have the SelectionMode = FullRowSelect, but since I need to color each row according to its result, I have set the property DefaultCellStyle - SelectionBackColor = Transparent, well, I'm not going to complaint about the font looks a little bit distorted, but about the selectedrow does not render correctly, If I minimize the program and then maximize it, the selectedrow appears with the image of the desktop's background.
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I m inserting 30 to 50 records .then set table as datasource to report.It takes 5 minutes.Plz anybody tell me how to do it fast.Then my pc is hangedI have also tried adding datarows into datatable instead of inserting records into access database and set datatable to report.but same time cosumed.
View 1 RepliesI am using the cursor converter to set both
dim cCon as cursorconverter = new cursorconverter
me.cursor = cursorconverter.ConvertFrom(myCursor.cur)
and
windows.forms.cursor.current = cursorconverter.ConvertFrom(myCursor.cur)
the reason for setting both is that otherwise the cursor will not always have the desired appearance. I know that cursors can be rendered in color, like 3D-Bronze, windows animated, hands and variations.
After I RemoveAt my payList, it appear very slow in edit form, but in new form no problem.How to make it faster. [code]
View 1 Repliesim using krypton free toolkit and we all know the speed is not good?i should try and code in diffrent ways using more apps to do small stuff taking more load of app but just an idea?
View 1 RepliesVS 2010 MenuStrip and ToolStrip System renderer
View 3 RepliesI've always wanted to make a drawing program like Sketchup or AutoCAD, obviously just a lot simpler. I want to make this a long term project to be able to render the objects with a shade so that they seem 3D. I think I have been putting of this project because I don't really know how to accomplish the task of defining a curved object like a curve or ball.
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I have a windows form which to summarize lets the user open a file containing 32 bit hashes, then search for one of them. The hash is then converted to its string representation. The application is giving the results I would expect but I'd like to make it execute faster than it does now; some files can be pretty big > 100 MB.
I'm doing the file read using a BackgroundWorker object to display progress updates and ensure that the UI is available during the process. But for that i need to add a System.Threading.Sleep(1) instruction in the loop; otherwise the application freezes with big files. And System.Threading.Sleep(1) creates a noticeable lag. Any suggestions on how to make searches fast without freezing the UI? Getting speeds comparable to hex editor programs for example.
I use this code to insert datab from my VB.Net form into my MS Access 2003:
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my event in timer goes too fast, i need to slower it. the interval is ok, i cant use sleep because it freeze everything ( webbrowser control ) and it need to stay active not freezing. i tried application. doevents() no result same problem, is there a way to do what i need? its a program that automatically fill a webbrowser form and restart every-time. there no logout button so i need to use setmouseposition and mouse_event but timer do event too fast one after other and if i use sleep everything go wrong.
View 5 RepliesI need to transfer a block of pixel values as quickly as possible to a picturebox control. The data will be in a byte array representing 512 pixels by 4 lines. The data is greyscale values from 0 to 255 but I could easily store each value three times to represent R, G and B if that made it easier/quicker to write the values to the picturebox.I've used fastpix (by Vic Joseph "Boops Boops") in the past but this seems more geared towards fast plotting of individual pixels and as I have a pre-formatted block of pixel data I was wondering about alternatives. I've done a bit of research and BitBlt seems interesting, but can this be used with a byte array as the "source"? All the examples I've seen are for transferring/merging between bitmaps/pictureboxes. How about Direct Memory Access? I just need a simple "brute force" method of getting my pre-formatted data into the picturebox. Oh, when I say "fast" I mean I'd like to plot my 512 x 4 pixels in less than 10mS.
View 8 RepliesIm new with datagridview. . . .and i want to delete a certain row or the user will select a item in datagrid but im find it hard to do it
If dread.HasRows Then
Dim cmd1 As New MySqlCommand("DELETE FROM product WHERE p_code = '" & listgrid.SelectedRows(0).Selected & "'", conn1)
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I am using VS2008 and I have a form which has a datagridview. This is for an invoice where I already have the user select the customer from a details view and want to have the items in the datagridview change based on what the customer selected. Then when the item is selected I want to have the price change accordingly.
So far I have the customer selction as well as the item combobox(not limited to cust items yet) appear, but I cannot figure out how to get the join of the 2 items (cust+item as the price varies from cust to cust) to change the price. Question is, is it possible to do this in the same datagridview, or should i try to just break this down some other way?
I have a web browser integrated into a project. the web site uses jquery and runs best with ie9. The WebBrowser control in my vb.net form runs the web page as ie6 and none of the jquery works. Is there a way to tell the control to render with ie9?
View 1 RepliesI'm trying to render a custom section within a form in VB.NET MVC3? the section is in the master layout, and is defaulted - but id like to create a custom one when in a particular view
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We have a report that has to be called from an ASP.NET application, it could be a simple button. Through the code-behind, I gotta pass in a paramater, render the report, and don't save it anywhere, just open it to the user, as a .pdf file so he could save or print it.
EDIT:Now I've got the report done, I just need to know the best aproach to call it.It can't be done directly from an URL because that allows the user to save or close the pdf file, which is not what I want.
I'm starting to think that the best aproach to achieve this would be the following:I render the PDF programatically, and create the .PDF file in a temporary folder inside my app structure, then start a new thread to open the file, and wait for the user to close it, when he does, I delete the file and the thread is dead.
I want to render a report directly to pdf. I have an objectdatasource with 2 parameters. I obtain these parameters from a hiddenfield on the webform and from the datakeyname on a gridview. The report works when I load it in report viewer without rendering to pdf. When I place the code to render the report as pdf the parameters dont load i.e. the report renders as pdf but there are no details on the report. My code is below,. I placed the code in gridview_selectedindexchanged:
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I render a complex shape in OpenGL which requires a lot of calculations, is there anyway to export that to a state like a model that can be opened again later given you wont edit it again?
I can't create them outside the program (with something like Blender) since the shape is computed when the program starts. The render then gets translated, rotated, drawn over, etc. Note, that I don't need to edit the shape though, but I do want it in a 3D state so saving an image isn't an option.
I'm trying to make a toolstrip similar to that of Internet Explorer (as shown below). Does anyone know how to create a custom renderer to do this?
View 7 RepliesDim formTest1 As FormTest = New FormTest()
formTest1.Show()
Dim htmlDocument As mshtml.IHTMLDocument2 = DirectCast(WebBrowser1.Document.DomDocument, mshtml.IHTMLDocument2)
If htmlDocument IsNot Nothing Then
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I want to copy the contents of a WebBrowser to a Bitmap. The above code seems to reproduce a part of the image but not all of it.
1) I'm sure I don't understand this completely so my comments probably have terminology that is not completely correct. I would really appreciate it if you could edit them and maybe add a little to them.
2) And, of course I'd like to know how to improve the code.
I currently use GDI+ to render my images but is too slow for what my software is supposed to do. I tried to use DirectX but it too hard to implement. Is there any library that is best of bought worlds? Fast and easy to use?
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I have a project with a canvas that the user can zoom and pan using the mouse. The origin is marked with a blue cross running through the canvas. As the user zooms in the line width of the markers is reduced to keep the them about 1 pixel wide on screen. However, after zooming in about 10x the origin lines abruptly disappear. It seems like the rendering engine is deciding that the line is too small to be displayed before applying the scaling transform.
What is strange is that when I do the same operation to a rectangle instead of a line I get the expected behavior (see the ScaleBox rectangle object in the code below). Any ideas on what is causing the problem and how to fix it would be welcome.
Here is the relevant XAML:
<Canvas x:Name="MouseCapture" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Background="WhiteSmoke" >
<Canvas x:Name="ZoomPan">
<Canvas.RenderTransform >
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Here is a screenshot as 10x Zoom. The origin lines have disappeared abruptly, but the black box still shows up as expected. (Note that only one side of the black box is visible because the rest is outside the visible region because of the zoom.)
I'm working on a website that creates pdfs dynamically.I've been playing around with two different pdf controls- wpcubed and abcpdf, and was surprised to see that they both appear to render text differently.
wpCubed:
abcpdf:
They are both using arial 25pt bold, so I was expecting them to look identical. Can anyone explain why they don't. Here are the full files: wpCubed , abcpdf
rticularly when creating jQuery buttons with no text and just icons) as a result of this.Secondly I am attempting to create my own custom button output by overriding the Render() event and am having a bit of difficulty trying to understand how to go about changing the output that is provided by this event.If I look at the HtmlTextWriter that is provided as the parameter to the Render() event I can see it contains a protected property TagKey = Input {47}, is it possible to simply modify this property somehow and change it to a Button or do I need to create a new instance of the HtmlTextWriter and populate it all from the start? If so, could anyone provide some guidance as to how this would typically be done and if there are any special considerations I need to make to ensure that my derived button class is functionally equivalent to the original (excluding the html)?
<Assembly: TagPrefix("MyCompany", "MyCustomButton")>
Public Class MyButton
Inherits Button
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I just can't get it to work. I have an array of bytes, read from a png file. I'm trying to write a (very) simple HttpHandler to render the image:
context.Response.AddHeader("Content-Type", "image/png")
context.Response.BinaryWrite(bytes)
context.Response.End()
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I am using directwrite and was just wondering how to render a font (font face file) that is loaded in the project resource (probably through a stream).
View 1 RepliesI have a asp:DropDownList with a CascadingDropDown being populated by a webservice.The data the webservice provides contains HTML code eg. <sup>2</sup> which needs to be displayed as a superscript Unfortunately, the HtmlEncode="False" doesn't seem to work (if i set it to true, doesn't work either) - primarily because it isn't a valid property for the dropdownlist How do I do this?
View 2 RepliesI am having an asp.net page which i was showing as a pop up using Nyromodel. the page contains
4 div which is showing as Tabs (using Jquery Tabs). 4 Repeater . Each repeater I am having a custom control and I am setting the value from db by setting the datasource to repeater. (This query may have 300-500 rows). 1 infragistics UltraWebGrid. I add selected values to the grid.
So the problem is it is taking too much time to render if I perform any operation in that UI. I logged the sp execution time, then I found that SP i taking only 2-3 seconds. But the control will render completely after 30-40 seconds. So sp execution time alone is not enough to satisfy the my lead. how to analysis the time of rendering the control.
So here is the situation. I am originally a PHP developer, here are my steps to render data:
PHP gather data from DataBase
PHP write data to JavaScript
JavaScript render using JQuery to HTML
HTML display to user
User Postback to PHP
PHP write back to Database with new data
Now I am using VB.NET and I need to use their paradigm with controls and what not. However I would like to render using JQuery and JavaScript. How do I get data into JavaScript when loaded in VB and get it back once user post?
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