In Zedgraph, How To Dynamically Add/delete Bars When Axis.Type=Text
Jan 20, 2012
I am using zedgraph to draw bar chart in my vb.net project. The bar base is Y (meaning all bars are horizontal). I have 9 fields for user to choose from, and once a user clicks a field, one corresponding bar will show. Of course, the user can click off the selected field to remove the corresponding bar item. I can do this. The basic idea is to get all bar items and set their visibility according to user's selection. My problems is that I want to have a textlabel next to each bar (this text label is different from legend)so I set the yAxis.Type=text. There are two problems:
1) When I add bars, I still need to specify x and y value. How do I set y value in this case to make sure bar ally perfect with its text?
2) As far as I know, I can add text labels by an array as the last line code shows. But obviously this only works for bar chart with fixed bars. In my case, the number of bars and also the order is changing based on user selection. How can I set text labels?
[code...]
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Jul 25, 2010
I have followed a tutorial from Zedgraph's wiki but I still seem to be having issues. When I run the code below, only the 3 curves on the Y Axis plot. I know the datasource is correct from which the 4 curves on the second Y axis are being created, because I have checked the table after creation. For some reason, however, the curves do not show up and the Y2 Axis does not change its scale to reflect any new curves. Does anyone see what I'm missing here?
[Code]...
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Aug 5, 2009
for those who know how to use Zedgraph, i am new in zedgraph and need help from u guys. what i want is to add a new y-axis value everytime i click on the button. the x-axis value is set at 0 to 36 and y-axis will start at value 10, at x-axis value 1. everytime i click, y-axis will increase 1 value. Imports ZedGraph
Public Class Form1 Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load, MyBase.Resize
CreateGraph(zg1)
'SetSize()
[Code]...
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Dec 16, 2011
In my vb.net project, I use zedgraph to draw figures. I find that the following properties work well to zoom figure on the center of mouse.
[Code]...
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Oct 2, 2007
how to change the orientation of the x axis labels in the zedgraph control?
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Feb 10, 2012
ive got code like the code below that creates textboxes dynamically. I want to be able to click a button and delete all of these textboxes i make, however im not sure how to do this. When i tell the program to remove the TBIndex control it does not do anything. The only way i get it to work is if i put the command in the same sub as this code. This code runs in a loop by the way.
So if the loop runs one time and creates the TBIndex control and i have a line of code right after to remove the textbox, then it does not show up on my form. But if i put the command in to remove the textboxes somewhere else and run the code the loop runs abunch of times and creates all teh textboxes and the loop is complete, then the remove control part is called and nothing happens. I just need a way to clear all the textboxes off my form with like a button. I also tried painting over the textboxes with a big grey rectangle but that dindt work.
TBIndex.Width = 54
TBIndex.Height = 20
TBIndex.Visible = True
[Code]....
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Mar 9, 2011
The output I am getting is is not what I am suppose to be getting when you type in 50 dollars i should get 58 bars and 2 coupons but when i run it i am getting 57 with 7 coupons left
Module Module1
Sub Main()
' declare variable
[code].....
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May 22, 2012
I have a P/L chart which has a left scale (Y axis) which starts from a negative value. I want to format the axis labels (the major tick mark labels) so that the negative ones are red.
Something like;
If cht.ChartAreas(chtarea).AxisX.MajorTickMark.Value < 0 Then
cht.ChartAreas(chtarea).AxisY.LabelStyle.Font = New Font("Verdana", 9.0F, FontStyle.Bold, Color.Red)
[Code]....
Of course that doesn't work since MajorTickMark doesn't have a value property. How does one make this work?
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Aug 14, 2011
I am having trouble in getting the coordinates of x-axis and y-axis in low level ouse hook...all I am getting is values in x-axis listbox and in y-axis listbox I am getting zeros......why? and my second problem is I am calling the setcursorpos
function in a for loop because I want to automate mouse movements and clicks, but setcursorpos function is not working , maybe because I am getting the coordinates wrong.....here is my code
low level mouse hook
Public Class MouseAutomating
Inherits HotKey
Public lstbox As New ListBox
[code]...
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Dec 20, 2009
I would like to display the word " Volts(V) " in the Y axis, just like the one you see from the attached image. But that image is crop from elsewhere and placed into a picturebox, which to me, doesnt look nice. I would prefer if the words are type in manually into a label and then rotate.
I did some research through the forums and websites, and came across this: [URL]
from there, i have a brief idea on it , tried out but it didnt work though. Or i may not have done it correctly.
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Sep 16, 2009
I am having some major problems with the code in VBA and recording a macro didn't get me anywhere nor is the VBA help file. I have to have it so that I can input a values for the x axis rotation and the y axis rotation so that my 3d surface graph will rotate whatever values I input, the 3d surface graph will rotate those degrees. I also have to have a method for having the default rotation. I was also wondering how to put scroll bars for the x and y rotation. The only other thing I am having trouble with is having an input to check box for right angle axes. So far I have two cells for entering the x rotation value and the y rotation value. I also already have my 3d surface graph.
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Jan 8, 2009
I have the smallest dataset in the world that simply consists of a month (text) and and amount. I want to produce a chart showing the month along the y-axis and the value up the x-axis. How do I do it? I have dragged the chart control onto the report page and populated the dataset. The chart shows but nothing like what I would expect. Just to make it simple I populated the dataset with an amount equivalent to the month number so it should show as 1 in January, 2 in Feb etc...However no matter where I drag the dataset's column names I don't get what I want. Where am I going wrong?
I use this simple loop to populate the dataset:
dsSales.Tables("Sales").Clear()
For i As Integer = 1 To 12
dsSales.Tables("Sales").Rows.Add(MonthName(i), i)
Next
ReportViewer1.RefreshReport()
I get this as a result:
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Jul 30, 2009
my text box will not respond to vbcrlf insted it displays 2 vertical bars (||)[code]
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Sep 10, 2010
I'm having a problem where I have elements such as Listboxes and Rich Text boxes that I want to set to size automatically in xaml according to the size of the window, but I only want it to resize to the size of the window and then put scrollbars if the content is any bigger than that.
Unfortunately, the only way I can get scroll bars to work is if I set a specific height of the listbox/rich text box (which does not work because I want it to automatically resize to the height of the grid that it is contained within, which is generally the height of the window (auto).
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Jan 4, 2010
I am noticing a "mysterious" change to text files used for graphs using Zedgraph libraries.In a 100-line data set, about four to five records inexplicably "disappear"! These are the SAME files which only 24 hours earlier showed the complete set and were successfully read.
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Nov 11, 2011
I'm reading data from Excel and processing the file line by line.
If the process succeeds then I need to delete that row from Excel and save it. If it fails, then continue with the next line and so on.
Initially I used OLEDB to read data from Excel, but by using this I cannot delete rows.
I think we can solve this by using COM component.
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Jun 21, 2010
1) How to Delete Dynamically Allocated Array?
a) delete a[]
b)delete a[0]
c) delete[] a
d)delete [0] a
My answer a.Correct or not
2)Can we use DML statement in function?
a)Yes
b)No
c)Temp tables
d)None
My answer d.Correct or not
I read somewhere the diff b/w stored proc & functions?One of them is Stored Procedure returns more than one value whereas functions return single value.When the interviwer ask me the question,i asnwered includg my above point,but he told me no SProc do no return any value.
4)Can we return value from SPROC?
a)No
b)Using O/p Parameters
c)Using return statement
d)B & C Both
ANSWER---??
5)Views are complied or not
a)Yes
b)No
c)Partially Compiled
d)None
ANSWER---??
6)Can we user specific data in application? My answer no.Me correct 7)Diff b/w primary key & UNIQUE key excepts one diff primary doesn't allow NULLS whereas unique does.One diff i told we can craete only one primary key for a table,whereas a table can have more than one unique key.
ANy more differences?????
8) Can we call a fn. widout dbo? I ans NO. Me correct or nt
9) Four types of files created by assembly?
10) What is candidate Key?
11)Can we implement CAS in config file? I ans YES. Me correct or nt
12) dim txt as textbox
dim txt as new textbox
Both the above statements are same or not.If nt wats d diff? I ans both are same. Me correct or nt
13)CAS is part of inbuild framework? I ans YES. Me correct or nt
14)Can constructor call itself?
15)Accept method applies to
a)Textbox
b)Listbox
c)Combobox
d)None of above MY ans a. Me correct or nt
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Jul 6, 2011
I have a form that has an array of dynamically created labels of varying size based on a search from a database. The problem I'm having is that when the user searches for a different term, it looks like some of the labels don't get new values. Here's my code for adding the labels:
If rdr.HasRows Then
ReDim Preserve entities(cnt)
While rdr.Read()
[Code].....
I've tried for loop over the controls in panel1 to dispose of any still on there in both the page_load and page_init subs, but neither had an effect. I don't know if it might have something to do with controls having the same IDs after the postback.
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Mar 18, 2009
I'm creating a PDF file on the fly using ITextSharp and ASP.NET 1.1. My process is as follows -
Create file on server Redirect browser to newly created PDF file so it is displayed to user
What I'd like to do is delete the PDF from the server as soon it is displayed in the users browser. The PDF file is large so it is not an option to hold it in memory, an initial write to the server is required. I'm currently using a solution that periodically polls for files then deletes them, but I'd prefer a solution that deletes the file immediately after it has been downloaded to the client machine. Is there a way to do this?
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Mar 12, 2010
I'm having problem with MS Chart chart type column. If there are only 9 bar in the chart like the following picture, then the axis-x label show up properly.
However, there are more than 9 bars bar the chart, the axis-x label wont show up properly, some of them just dissappear.
Here's my mark-up for the chart:
<asp:Chart ID="chtNBAChampionships" runat="server">
<Series>
<asp:Series Name="Championships" YValueType="Int32" Palette="Berry"
[Code]....
I don't know it works with only 9 bars? Is there any way to make the chart work properly? Also, if possible, how to make each bar have different color.
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May 15, 2010
Is it possible to declare a variable and to choose it's appropriate type during runtime?
it should be something like this (of course, the last line does not work):
'Determine what type of variable is needed later
Dim myVariableType As System.Type = System.Type.GetType("System.String", True, True)
'Create variable with needed type
Dim myVariable As myVariableType ' Should be a string variable in this case
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Dec 8, 2009
I am dynamically declaring types (using ModuleBuilder.DefineType() which are used to allow for strongly typed data sets from a CSV file. However when the user adds or alters a column definition I'd like to remove and rebuild the data type. How I drop and recreate a type - do I have to unload the whole assembly or how is it done?
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Oct 10, 2011
I'm using LINQ to Entities to generate typed result sets in VB.Net. I've got a generic Report class as follows:
Public Class Report
Public Property Name As String
Public Property SQL As String
Public Property Type As String
End Class
Then in the calling scope I want to have code that does something like:
' create my data context
Dim context As New MyAppEntities
' get a report object out of a dropdown list
[Code]....
So far I'm finding that .Net won't let me set the type in the (Of Type) clause on the fly at runtime.
Does anyone know how to do this?
I've tried changing the Type property of the Report class to an object of type Type, but that doesn't work either.
BTW, I know there are alternative ways to accomplish the same thing, but I'm working with external constraints that make this what I've got to work with right now.
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Feb 1, 2011
I'm returning a database query into a List object and using that list object to fill the X and Y axes of my chart as seen below. (_runData is a "List(of DatabaseTableName)" style Object filled with the results of my query.
Primary_Chart.Series(0).Points.DataBindXY(_runData, "DateTime", _runData, "UPPER_PRESSURE")
My Datetime field is returning as a Serial Number (i.e. 40116.76111) so I want to format the X Axis to display the field more readably. Enter my problem code.
[code].....
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Jan 15, 2009
Can anyone how can i use a zedgraph?
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Jan 30, 2009
I have a form with labels, with changing values (sub totals from a carbon footprint calculation)
and i want to create a graph which plots the final amount in Label7.text into a gar graph.
Y axis should be Carbon Footprint and X axis should be date.[code]...
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Apr 19, 2011
I am having trouble removing a row from a table of an access database. I'm trying to remove a row based on a date/time that has already passed. Here is the code I have. When I try to run it I get an error.[code]...
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Nov 8, 2011
When I dynamically compile SilverLight 4.0 application using Microsoft.VisualBasic.VBCodeProvider, I get the following error.
Line: 118 ErrorCode: BC30002 Error: Type 'System.ComponentModel.Design.HelpKeyword' is not defined.
Line: 130 ErrorCode: BC30002 Error: Type 'System.ComponentModel.Design.HelpKeyword' is not defined.
Line: 141 ErrorCode: BC30002 Error: Type 'System.ComponentModel.Design.HelpKeyword' is not defined.
Line: 234 ErrorCode: BC30002 Error: Type 'System.ComponentModel.Design.HelpKeyword' is not defined.
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Feb 17, 2010
i'm having the following code to add the textboxes dynamically. now i want to get the values entered in that textboxes dynamically...
heres the code:
Code:
Public Class Form1
Public x = 17
Public y = 60
[Code]....
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Jan 13, 2010
I have declared an array of text boxes created dynamically at run time. The textboxes are assigned some values by user. The text boxes are located in a Form so that once the user fills in the info and clicks the "ok" button, these values are passed at the back end and the form dissappears. However the user can bring back the form again by clicking another button.
The problem is that once the form reappears, the information previously provided in the form remains. Even the user clears the text boxes to provide new value, the text boxes at code behind do not receive these values.
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