How to find the correct DashOffset and DashPattern to fill in the gaps with another color within a dashed line if the 1st DashPattern has an array of mixed values?
If the 1st array for a DashPattern is like this though?
myPen.DashPattern = New Single() {20, 15, 30, 45}
when setting a column to identity it will auto increment 1,2,3,4..however if you delete 4 & 5 and then insert another record it will go in as 6.If you do this a lot you end up with huge gaps in the numbers,is there any way to make SQL default back to filling in the gaps and only count higher if there are no gaps?I know I can do it in the application, or even a UDF, I just want to make sure I am not reinventing the wheel?
View 9 RepliesI am graphing using Visual Basic graphics and it works. I would like to know how to draw a DASHED line instead of a solid line. Could someone help me with this?gphFormGraphics.DrawLine(Pens.Green, pt2, pt1)
View 4 RepliesThis is simple program, draws a rectangle, marks the x & y axis, & plots a dashed line grid. However, the grid sub has to be called twice - only then will the grid line be visible. Why does this happen?
CODE:
Ok basically I want to select a point on a bitmap and then fill all of the color that is the same as the color at that point touching that color with a different color. If that sounds confusing, just think of the paint bucket tool in mspaint or photoshop. Currently I do this by starting with the point selected and then check all the points around it in an ever expanding box until at last no new contiguous points of the color to replace are found.The bad news: This is slow as heck =(I remember my windows 98 computer could handle this just fine with no noticeable delay. So I'm either missing something algorithmically (is there a better approach) or VB.net is just too slow to accomplish this without some sort of different approach/optimization.
[Code]...
As you can see, right now I just select the middle point as where I want to start filling from, and I fill with the color aquamarine. later I want to make this more flexible, but right now I just need this to be faster.
My general algorithm works like this:Start with a 3x3 pixel box with the first pixel (already changed to your new color, with the old color stored) as your start point.Check if each pixel is the color you stored (the one you're replacing) If it is, check if it's next to the new color you're replacing the old color with. If it is, replace it and increase the size of the box.The process ends when no new pixels are replaced.
I am upgrading a system that has a Product Table with a Product No Field.This is a string field but most of the existing product Nos are numeric but all over the place.I want to provide a default numeric Product No when the Users are creating a new product record.All I can think of is to use the Identity Field [ProductID] and test to see if it has been used and if so keep incrementing to find the next free numerical, available No.A better solution would be to start at 1 and increment to find the first available but it looks to be several hundred records into the Table. how to find the first available number?
View 9 RepliesI need to draw dashed lines. I use this code:
Dim MyPen As Pen = New Pen(Color.Black, MyWidth) With {.DashStyle = Drawing2D.DashStyle.Dash}
MyGraphics.DrawLines(MyPen , MyDots.ToArray)
But since the distance between successive lines it too short, the dashes start each one too near to the last. It causes a continuous black line
I have a label on my code and i have 3 lines on it , what i want to do is to have my first line on white color and bold , next line normal white and third line on yellow normal ..
View 9 RepliesHow can I change line color at run time? total 17 gridline showed in the graph, I only want to see 5 grid line and hide rest of gridlines when I use radar chart.
View 1 RepliesMy Code:
For Each dr In dt.Rows()
If (cnt = 0) Then
tx_control2.Text = dr("Name").ToString.Trim
Else
tx_control2.Text = tx_control2.Text + Environment.NewLine + dr("Name").ToString.Trim
End If
cnt = cnt + 1
Next ' for row
Using above code to add all names from datatable to Textbox using Environment.NewLine. This is adding all names in Textbox. Now I want different color for alternate names. I used :
tx_control2.ForeColor = Color.Maroon
But above solution change the color of all names.
For the program I am building, it will have a mini syntax highlighter. How do I color a line the contains -- from that point and onward?
Example:
This is the text --this is a comment
_OR_
this is the text
--this is the comment
Going in more depth currently over on MSDN on how to parse a color line to the richtextbox.
To explain more imagine you have various types of information. For example sake say a....
PRIVMSG
NOTICE
MODE
being parsed to the richtextbox. Now we have one sub to deal with all these three messages from the server but each needs it's own color.
Now currently i can only think about on each arrival of a new message loop the RTB length and match a a string.
Is there any way when we append to the RTB with the new string we can parse that new strings color also?
How to set the BUTTON border line color transparent? Because my BUTTON background pic is not a square. So when i click the button i will see the border line ..
View 2 RepliesI am working on my first project, which has a ListBox to organise my tasks.I added a ComboBox where I can choose between the subjects. In my case the 2 posibilities in the ComboBox are "School" and "Others".If I add a new item to the Listbox (done by a TextBox and a Button) I also choose between School and Others.If I choose School I want the background color of only that line to be Red.If I choose Others I want the background color of only that line to be Blue.
View 17 Replieswhat i need to do is open a txt file, read line by line, decode each line into an array and display. Now all works ok apart from one line.
sTextLine = objReader.ReadLine() <-- Value of string cannot be converted.
full code here
-------------
Dim objReader As New System.IO.StreamReader(sOpenFile.Text)
Dim sTextLine As New ArrayList()
Dim sText As String = ""
Dim i As Integer = 0
[code]....
how to read text from a listbox line by line and put current line in a label?
View 3 RepliesHow would i go about reading a file Line by Line that within that line The values are delimited by " Example of the data:
"bob" "cat" "1243"
"steve" dog" "6789"
I've started this with this code but not sure how to go about the next stage:
Using MyReader As New _
Microsoft.VisualBasic.FileIO.TextFieldParser(My.Application.Info.DirectoryPath & "Records28112011.jd")
MyReader.TextFieldType = FileIO.FieldType.Delimited
[code]....
I am trying to read in a TextBox line by line and take the first 7 characters of each line and output everything in another TextBox.This is what I have so far.
Dim line, lines() As String
lines = TextBox1.Text.Split(Environment.NewLine)
Dim i As Integer = 0
[code].....
How to change a forms background system color schemes to windows default color schemes in vb.net?
View 2 RepliesI have a question of VB event handler and color picker. Now I have a label, and I want when user click it, it pops up a color picker dialog and let user to change the background color of the label. Not sure how to implement this, can anyone give me a direction?
View 2 RepliesAlright inside of a combo box I have a list of colors and I want to change the background color of the combo box to the selected color...basically this... but im not sure what the problem is here anyone have some advice or is this not possible?
CBLinerColor.BackColor() = CBLinerColor.Items.Item(0)
Basically i want dynamic code that will change the color depending on the items in the box.
I want the background of my form to be the same color as the window frame color that the user selects, even if that changes. I selected System->WindowFrame as my background color, but it always remains a dark grey, regardless of what I have my window color set to. How else would I achieve what I want? I assumed I was doing it the correct way. Do I actually need code that gets the system window color and then apply it?
View 4 RepliesI have a array of pixels. And I would like to Quantize them.
For Example
FF00FF,00FFFF stuff like that, but most are custom colors and are not a standard 256 color palette. So I need code to convert a color to a 256 color. I dont have any idea on how to do this, but thats why I came here. I do not want to use System.Graphics.Image.Palette or anything like that as this project uses arrays for images. I would like to if at all possible be able to convert a R, G, B color to 8bit, 16bit, 256bit and possibly use the HSL or NeuQuant method or something close to that, or maybe even some other methods of doing it. I do need to be able to do this for a single pixel, but I will also need a method for a array of them.
Right Click drop down menu using ContextMenuStrip. The background color of an unselected menu item is set with "BackColor".The color of the text of a selected menu item is set with "ForeColor".How to set the background color of a selected menu item? Default appears as a dark grey and I would like to change it.
View 2 RepliesHow to change the Data Gridview Button Back Color and Fore Color Based on Condition in Vb.net2005. i'm Attaching the gif toooo
View 5 RepliesI am using .NET 1.1, so I don't have the access to listitem object. I would like to change the text color or the background color of certain items in a listbox. can it do it in .NET 1.1?
View 5 RepliesI need to a color picker luke office 2007 color chooser this must be as "toolstripItem" for adding to toolbar!
View 1 RepliesI am trying to write code to load all nown color names from color.xxxxxxx in a ComboBox, but can not get it right. I can not find the Color Enum member. What I had in mind was something like this:
[Code]....
[URL] That way if the string that is not recognised that is passed to Color.FromName it returns a SolidColor of
Color.Black = Color.FromARGB(255,0,0,0)
That way, Forms and controls that only support SolidColors are supported.Installing VB6 on Windows 7?
i would like to have an image like this one on my form.e form to turn this color
View 2 Replies