.net - Bitmap Generation With Dot.net And Png?
Feb 2, 2011
What resources I need to look for, to generate one png image out of three? Since there are sprite generators out there, that do not do what I want, I wanted to try by myself. The user interface should not be the problem, but i have no experience of generating bitmaps, especially those with transparent backgrounds. I will do that in .net. Letīs say I have 6 png files. I want to put them into one image, where there will be two rows of images in it, so 3 in row, 2 in height, 3*2. Every image might have a little different sizes, so i would need to fill up the space with, um, nothing..
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Jul 3, 2011
I'm using Bitmap to show picture box like slideshow using Timer. For each timer interval, I've to go for new instance of Bitmap, there System memory increases to 1MB, How to resolve this, 'BG is picture box
Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tic Dim img As Bitmap
img = New Bitmap(System.Drawing.Bitmap.FromFile(FileIO.FileSystem.GetFiles
[CODE]...
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Dec 15, 2010
I'm trying to use a ToolTip directly to a Bitmap Object (System.Drawing.Bitmap), aparently I can't do this because Bitmap isnt a Windows Control.
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Sep 17, 2011
how can i create a monochrome bitmap from a semi transparent bitmap in vb.net? the bmp is for a transparency mask image for an icon i'm trying to create with the CreateIconIndirect API function.
i'm using vb2008 .Net3.5, but i would prefer an answer that would also work in vb2005
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May 26, 2011
Here is a short program to demonstrate my question. I just want to extraxct a rectangle bitmap from a big bitmap.Code as follows:
Private
Sub Button3_Click(ByVal sender
As System.Object,[code]....
Execution stops when hitting the Dim cloneBitmap statement, which should have created a bitmap out of the rectangle cut out.The message is:
"MissingMemeberException was unhandled.
No default member was found for type 'bitmap"
I just don't get it. Seems that the method Clone(Rectangle, PixelFormat was not found.
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Feb 10, 2010
I have a grass image located here in my directory. I want to just create a Bitmap, but I am getting an error. (Parameter is not valid.) Immediate Window: A first chance exception of type 'System.ArgumentException' occurred in System.Drawing.dll
[URL]
private void Form1_Load(object sender, EventArgs e)
{
Bitmap bmp = new Bitmap("grass.jpg");
}
bertino
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Oct 1, 2011
The code below reads an Icon from an .ico file, converts the Icon read to a Bitmap and saves the bitmap using:
Bitmap.Save(PathA)
Then does:
PanelShowWrittenIconA.BackgroundImage = New Bitmap(PathA)
[code].....
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Jan 9, 2010
are there any classes in the .net framework that allow me to generate classes that i can save as .cs or .vb files ?
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Mar 17, 2010
I'm working with some very large files residing on P2 (Panasonic) cards. Part of the process we employ is to first generate a checksum of the file we are going to copy, then copy the file, then run a checksum on the file to confirm that it copied OK. The problem is, is that files are large (70 GB+) and take a long time to complete. It's an issue since we will eventually be dealing with thousands of these files.
I would like to find a faster way to generate the checksum other than using the System.Security.Cryptography.MD5CryptoServiceProvider I don't care if this means using a specialized hardware card, provided it works and is not to ungodly expensive. I would prefer to have a method of encoding that provided some feedback as to how far the process has gone along so I can display it like I do now.
The application is written in vb.net. I would prefer to be able to use it as component, library, reference within my application, but I'm willing to call an outside application if there is enough improvement in the speed of generating the checksum.
Needless to say, the checksum must be consistent and correct.
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May 20, 2010
in vb.net while entering a new entry i want to assign a record a unique id like in case of numeric i do this way
Dim ItemID As Integer
KAYAReqConn.Open()
SQLCmd = New SqlCommand("SELECT ISNULL(MAX(ItemID),0) AS ItemID from MstItem", ReqConn)
[Code]....
in this case m using itemid as a unique id and the format is 1,2,3... and m finding out the max and assigning to a new record but how to assign if the previous id is of the a00001,a00002,a00003,a00004...so on. how i do i produce a unique id in this case
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Apr 11, 2010
I have the following situation: An interface (Windows forms) to a dataset. It has binding navigator, binding source, table adater etc operating with a dataset. How can I make a textbox for an ID field automatically generate an appropriate number for the ID? Just like the sql server direct database editor generates an id for fields with the "is identity" and "auto increment" properties on.
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Dec 12, 2009
I am working on a Point of Sale system using VB express 2008.I want to generate invoice with Barcode and also stock items with Barcodesort of Barcode system i should use for this and also how i can code to generate and pring the Barcod
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Mar 6, 2011
I face problems while transferring objects between layers (mainly the Presentation Layer), as I work with classes having approximately 40 properties.(I don't reference the DAL in the Presentation Layer)So here's what I decided, I am planning to build an App (maybe Visual Studio Addin) which will help noobs like me to build POCO's rapidly.The GUI of the APP would probably be a datagrid with columns for
1) access modifiers
2) property name
3) data type
4) get method (checkbox)
5) set method (checkbox)
Also, the app will have an option to connect to the table and automatically generate a POCO class I would like to generate Strongly typed C# / VB.NET POCO classes for different Scenarios, Like Entity Framework, LLBLgen etc. I am mainly targeting LLBLgen and EntityFramework?I need the following information:
1) Is there such a tool which already exists
2) What are the things that I have to consider (like nullable types etc)
3) The DataTypes generate by ORM's LLBLgen/EF/nHibernate
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Feb 19, 2009
When I close the form I get the message "Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information."at line obj_oledb_da.Update(dataSet).
[Code]...
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Jan 13, 2010
i just don't like the gap that exists between the .net framework and SQL database. I've explored everything from EF to LINQ to raw sql command strings.Does anyone know a project acting like a generic editor for a database? Meaning adding tables and relationships and constraints at runtime and offering simple field validation based on the information generated by the database schema. I know you can always drag and drop fields from a datatable to a form and a wizard will give you basic navigation over it, but I was wondering, is there more to it?
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Nov 9, 2009
I have a problem regarding the generation of random numbers in vb.net..I have code like this!!it generates the random number but both the numbers are same for my program the should not be same!![code]
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Sep 19, 2011
I want to call Jasper Reports via VB.net.Is this possible?
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Mar 19, 2012
I have an situation where i need to convert Doc file into PDF file. I am devepoing windows application in vb.net. and also i don't want to user third party dll if possible.
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Jul 7, 2009
I have an MDI form with 3 nested children with in it. As of right now all it can do is display a new form.For example: each time I press the menu button, the new child form(Form1) is created. Now, if I press that same menu button a second or subsequent time a new Form1 is created and it appears over the previous one.
What I would like is that each time the event handler is triggered (a menu item_click on the parent form) that instead of a completely "new" child form being produced(a new window popping up) it would instead pull up the appropriate child form that is attached to the trigger.
[Code]...
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Jul 19, 2011
I am new to WSSF and am wondering if it would work for solution with VB as the programming language if so how to achieve it. I have seen samples which generates C# code but my project requirement is VB .Net.
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Nov 10, 2011
I have a windows form having combobox and textbox controls.. I have to generate a part number, consisting of combobox and textbox values included.. I can explain in detail.. This is the code i have used to define a variable "type"..
[Code]...
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Dec 13, 2011
Dynamic SQL generation for the DeleteCommand is not supported against a SelectCommand that does not return any key column information. above error has occure during updating and deleting the record
Dim constr As String
Dim con As OleDb.OleDbConnection
Dim da As OleDb.OleDbDataAdapter
Dim ds As New DataSet
[code]....
i set the primary key also records are present in database?
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Mar 19, 2010
Getting the following error when running my application.Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information.On form load it reads the database to the textboxes for the user, they can then change their details.On clicking the save button I am attempting to update the database with the information from a textbox but the above error is thrown and I'm not a bit lost.[code]
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Oct 13, 2010
Error Which I get is:
"Dynamic SQL generation for the UpdateCommand is not supported against a SelectCommand that does not return any key column information."
The Code is as follows:
Dim Countr As Integer
For Countr = 1 To GrdData.RowCount
strTrnsUpdt = "select * from order_transaction where uniq_id='primary key of the field to be updated'"
[Code].....
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Sep 3, 2009
I am working on an Excel report and I would like the top rows to be empty to allow for an image to be inserted. However, I do not want the image size to change the width of the columns and would rather the data below do that.
This is what I have so far:
If ComDset.Tables(0).Rows.Count > 0 Then
Try
[code].....
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May 27, 2011
I just realized the OLD tutorial here is still works. Here is the webpage link But that one is iText 2005. And now is 2011, I wonder if there's any nearest version of iText for vb.net ? didn't found the iText for vb.net in 2008 version.... is there anyone could clarify this?
Because that 2005 version is using .Net framework 1 or 2. Very old... now I'm using version 3 & 4.
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Jul 20, 2010
Public Function Crypt(ByVal Str As String, ByVal Password As String) As String
Dim SK As Long, K As Long
Rnd(-1)
Randomize(Len(Password))
[code]....
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Jun 6, 2011
i am trying to teach myself vb (im only 14), and i'm not having a easy time. What im trying to do, i need a user to define a upper and lower bound of a range. From there i need to generate random numbers, a certan number of times, with in that range...this is my first problem.And then, i need to make counters to store/test all of these variables as even, odd, positive, negative and zero's ...that i need to append to a richtextbox to show how many of each. Im not even sure if rtb is the right object to use...you know, instead of textbox, or label?the last thing was to do with Private function as boolean. do I need this to test these variable?
[Code]...
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Feb 18, 2011
Ok... So I have created my model using EF4. Great!I then turned off the code generation and downloaded this extension: [url]...Ran it, and it generates all of my classes. Is that all I have to do? It seems to work, my repositories get to the objects and persist to the DB.
[code]...
Where does the service layer fit in?What about the AutoMapper? Do I even need to use that now?Dependency Injection?
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Feb 11, 2010
I have developed a software, now i want to float in market on license basis, what i want to do is data, there should be some code which generate sever hardware key and then prompt for license key.
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