i use this code to insert argb value from picturebox to listview
Private Sub Button6_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button6.Click
Dim bmp As New Bitmap(Me.PictureBox3.Image)
Dim x, y, a, r, g, b As Integer
[code]....
it's code very slowly.....
Im using VBStudio 2010 Pro and I am writing to the registry the Font and Background colors so that my form load will apply the chosen colors. Can't get it to work for me though.
Am setting like this:
ColorDialog.ShowDialog()
My.Computer.Registry.SetValue("HKEY_CURRENT_USERBMSUFontColor", "FontColor",
[code].....
I'd like to know how to convert argb to rgb
View 12 RepliesI have a hexadecimal value contained in a string in the format like #FF00 for red, #0FF0 for green and #00FF for blue. I remove the hash sign so it's just the hexadecimal number but after that, I'm stuck? I know there's a convert.tostring or something but I'm not sure how to use it when converting from hex to decimal.[code]How do you do the reverse of this? From Hexadecimal to Decimal so I can create the argb value of my brush colour. If there is an easier way, please say but, as far as I am aware, Visual Basic.net 2010 doesn't let you define a colour using #0FF0.
View 19 Replies1: Start with bitmap in picturebox colored white2: Draw a filled rectangle (50,50,100, 100) Color black - ARGB (255,0,0,0)3: Draw a filled rectangle covering black rectangle (25,25,150, 150) Color blue, with Alpha set to 100 - ARGB (100,0,0,255) -because of 100 Alpha setting the black rectangle is visible through the blue rectangleProblem : Using bitmap.GetPixel on the blue rectangle (over white background) the result is ARGB(255,155,155,255) -an Alpha value of 255. The new color loooks the same but is not transparent.Question: How to find Alpha(transparency) value of pixel
View 7 RepliesQ1. is there a way to set an argb value to a Control?
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
Me.AllowTransparency = True
Me.BackColor = Color.FromArgb(155, 255, 0, 0)
End Sub
i get error when setting BackColor "control does not support tarnsparent background colors"
Q2. is there any difference between this 2:
argb(255,0,0,127) "opacity is 1, blue is half" and
argb(127,0,0,255) "opacity is half, blue is max"
Q3. what if there are rounding off errors in the conversion to/from argb/rgb say argb(200,0,0,150) when converted to 255 opacity i get (255,0,0,117.5585938~)can i say that argb(255,0,0,118) is exactly equal to argb(200,0,0,150) or is argb(255,0,0,117) exactly equal to argb(200,0,0,150), or is there no way to exactly convert argb(200,0,0,150) to a value with alpha at 255?
Q4. is it true that there is absolutely no relation between argb and rgb, because the actual rgb value of an argb depends on the color of the element behind it?
I am creating a small movie application using MS VB .Net. On my form I have a two TextBoxes, ComboBox, a Button, and a PictureBox. What I would like to do is when the MovieID TextBox equals "10" (or any other number), I click the button and the corresponding Images number will be inserted into the PictureBox. For example: C:\Images is where all my Images are stored. When the MovieID Textbox = "10", the Picturebox will be populated by the Image name "10", when the button is clicked. If the MovieID Textbox = "23", then the PictureBox will be populated by the Image name "23".
[code]...
I'm trying to retrieve an image from my access database and insert it into a picturebox using the following code.
PictureBox.Image = rs.Fields().Item(8).Value
but it throws the following error
Quote: Unable to cast object of type 'System.Byte[]' to type 'System.Drawing.Image'
How can I insert text into a PictureBox in VB 2008. I would like to add text to graphs which I have been able to generate, but I cannot find the equivalent method to use with text,
View 3 RepliesI was curious why this bit of code won�t detect that the ARGB value is Blue:
[Code]...
When I run the code it says that the color isn�t Blue.
I'm looking to get the label to show the ARGB value of the backcolor on my current form using vb 2010.
View 2 RepliesI have some BLOB images within a small, 9 row, database and I simply want to run through the database and sequentially place each separate image into 9 picture boxes. I have tried with a picturebox array but it's placing the same image into each picturebox!
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I'm making a registration form for a website. However, there is a capatcha. I need to get this image and put it into a picturebox. I had a method to do it but since its a capatcha it's dynamic and I can't save the image. How would I do this? i tried this:
pic = Form1.WebBrowser1.Document.GetElementById("ctl00_MainContent_CreateLiveId_ctl00_HIPControl_Image")
PictureBox1.Image = pic
But I can't convert "System.Windows.Forms.HtmlElement" to "System.Drawing.Image".
How would I go about doing this?
Why is it that in parts of the .Net architecture that ARGB colours are expected be as type Integer when ARGB is outside the range of Integer? (ARGB requires 32 bits of precission, but Int has 31 bits of precission).Now of course I could just do a conversion, but what freaking conversion to use??? (I'm not affluent with all the VB global methods and the sort)
I've tried things like:
Code:
Dim value As Integer = &H80000014
Dim uvalue As UInteger = CType(value, value)
''overflow others include Convert.ToUInt32 -> value was either to large or to small and a few others all offering up nonsense about overflows, when all I freakin' want is a colour that Microsoft's own engineers have done stupid things like expect Integer values in places where UInteger should be, or vice versa. How about some consistency...
Code:
Dim value As UInteger = &H80000014 ''<- not represntable as a Uinteger???
Dim uvalue As UInteger = 2147483668 ''<- same value in decimal, same exact value! and it works this says it's not representable as a UInteger?
I need to create hex color to visualize wit it a number on google earth. Moreover I would like to create a small image file that depicts the color used in google earth. so I convert hex color from ARGB to brush color This is my
dim oo=new random()
Dim filecolori = New StreamWriter(dir_colori + "lista_colori.txt")
Dim b = Nothing
[Code]....
I am having trouble to make a form that displays the picture of the student which all his info is in a datagrid. I used the following
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
' TODO: This line of code loads data into the 'BdSyngentaDataSet.Training' table. You can move, or remove it, as needed
[Code].....
It worked. But, when i click on the next student and go back to the previous, the picture is not there. When I stop the debugging and start again the picture is there but it stops displaying again after going back and forward.
I thought that instead of directly downloading the images, usic, or whatever to the computer right away-why not have the user pic and choose. So, the transfering of the items that the user might want to download is sent to a new form. I have a picturebox that shows up a X symbol showing that it can't be loaded.
Here's a code just so you guys can see:
PictureBox1.ImageLocation = ListView1.Items.IndexOfKey
The one I wrote above I'm still working on.
I tried different methods such as:
Private Sub ListView1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ListView1.SelectedIndexChanged
PictureBox1.ImageLocation = e.tostring
I have a list of ID's which each ID represent an item in a game. For example, ID "4022" represents "Basic Wand" (Example). I have a list of ID's, now what I want to do is: Have a listview which has each line for an item. When you click on any item, the PictureBox will change according to your ID choice.
How can I use these ID's and store them for each item (text)?
i have a listview in my form and some items in it. so i want load image from listview to picturebox. to explain: listview have items in it with image like:
[Code]...
so if i double click on item1 i want to load that [image] to picturebox. btw picturebox is on form2. i think that you understand me. i use imagelist1 as largeImageList and imagelist2 as smalimagelist... here is the code that i try with:
[Code]...
I'm am having a heck of a time finding a code snippet that works for this. I have got to the point where it appears the picture is stored as a blob (perhaps incorrectly) by using this [code]...
View 3 RepliesHow do I place values of variables to the columns of a listview. There's a guide here Here but it shows how to fill in values from a file.
View 10 Repliesi have a listview with 5 columns and how to insert data only in columns 4 and 5.
View 4 RepliesI have 52 listview items in my listview1 and I have a picturebox basically I want it where I can click on a single item in the listview and display an image from a url in the picturebox. I basically have it right now that when you click on any item in the listview it just shows the same image in the picturebox no matter which item it is. I need to figure out how to do it separately for each item.
View 12 RepliesI am stumped by being unable to cancel a list view insert operation following a method to validate a string. While the method validates the string and shows a modal popup when the string is not valid, then I want to stop the insert using e.cancel
Imports System.Data
'Imports System.Data.SqlClient
Public Class SecureOrderHCTPScan
[code].....
Decided to use [again] listview because data grid view was "rejected".[code]...
View 8 RepliesI'm using Visual Web Developer 2008 Express Edition and I need your assistance since I'm new to it. I want to insert a record into my listview control of my asp.net webpage using c# or vb.net codes. Here's how it works, if I have four textboxes and I'm going to fill each textboxes so I click a command button I want to insert the value of each textboxes into the listview control.
View 1 RepliesI tried this code to insert all the items from ListView to DBaccess but it showed mistake in the line of SQL (red line). The message of mistake: operator '&' is not defined for types 'string' and 'system.Windows.Forms.ListViewItem.ListViewSubItem
[Code]...
i'm have a payment form and a listview in this form. i'm adding about 3 item in the listview, so it has 3 row. but how can i insert the items in one of the column into database.
for example for listview
id item netmount
123 Stock1 113.00
[code]....
i have some data in the listview
how the script to insert all of the data in the listview into table..
I have 5 textbox, and 5 column in listview, how can i put the data from textbox into columns?
and also using F5 key( key event) to add the data(not using butons).