Unable To Change SeriesChartType Dynamically
Dec 30, 2010
I am using the MS Chart control (version 3.5.0). I have added it by using the designer (drag and drop). I removed the default "Series1" from the Properties -> Series -> Collection so that the chart contains no data. I am adding the data at runtime based on a canned query to a SQLite DB. Like so:
Dim SQL As String = "SELECT * FROM ageLength ORDER BY month"
Dim cmd As New SQLiteCommand(SQL)
Dim SqLiteConnection1 As SQLiteConnection = New SQLiteConnection()
SqLiteConnection1.ConnectionString = "Data Source=" & My.Application.Info.DirectoryPath & "DataUserData.db3;"
cmd.Connection = SqLiteConnection1
[Code] .....
The data is displayed on the Chart, however, it is a Bar type graph. I set it to use the Spline type for both series.
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Jan 20, 2012
I'm developing a chat system. In this I'm creating dynamic tab panels in a tab container when I change the selected index of the list box of users. In these tab panels I'm creating 2 text boxes and 1 button dynamically and adding a handler for the button click event. I'm storing the tabid's in the session state and recreating all the tabs in the page_init event. I can fire the button click event in the tab panel, in which I'm unable to access these dynamically created text boxes but I can access a label which I created statically. I used the findcontrol() method but it is showing an error message: "Use new command to create the textbox instances". It is showing something like I haven't created the instances of textbox.
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Jul 13, 2011
I have an asp.net web forms application. In this application, students upload assignments and submit a survey along with it. For the survey, I read values from DB and dynamically generate ASP.NET Controls like radiobuttonlist, checkboxlist, textbox on the form during gridview's RowDataBound Event. I cannot do it in Page_Init method because I create only if a user click on a specific assignment which requires a survey to be submitted.
When I submit the survey form, the survey values are not saved into database. During debugging I figured it out that the values are not available in the codebehind page. The radiobuttonlist.selectedvalue returns and I get following error[code]....
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Jun 27, 2011
I am working on a site where the meta tags are set in a Masterpage in a section using runat="server". I can update the title, description, keywords, etc... through properties in the Masterpage code-behind, but how would I add or edit non-basic ones such as
I have tried the following, but it always returns 0 for the count.
Dim header As Web.UI.HtmlControls.HtmlHead
header = TryCast(Me.Master.FindControl("headerIdName"), Web.UI.HtmlControls.HtmlHead)
Dim count As Integer = header.Controls.Count
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Jun 1, 2011
I have close to 10,000 serverside pages, all of thse use the same stylesheet. I have created a new serverside page which is like a dynamic menu system to help find specific pages from the existing 10,000 pages quickly and easily.
The problem is, that if the serverside pages are accessed the old way using the old menu system, they should retain their old stylesheet. however, if they are accessed via the new menu system, they should use a new refreshed stylesheet.
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Mar 14, 2011
I'm trying to find a way to change the name of a text box if the name of the text box is first declared as such:[code]I tried the statement: Name = "SBox" & My. Settings. Row Countx but maybe this is wrong.To be very brief I'm trying to resolve this to under the following scenario:
1. Add a new text box to a tab page when user selects "add" button.
2. Each text box must be assigned a unique name
3. Data entered in each text box will be then be saved in my.settings (i.e., for each text box, there will be a corresponding variable/name to hold its text value)
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Sep 20, 2011
I have one web service reference in my project but it has two url one is live and second one is test,how to switch between these url dynamically in vb.net[code]...
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Jun 22, 2010
In my form, there is 1 Button and 1 Label.
There is no text in Label1 right now.
I have coded the button:
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Label1.Text = "1"
End Sub
End Class
Now when i run the project, i click on Button1 and Label1 has text in it "1" as it is in the code.
I want when i again run the project, the text in the label should be changed once i click Button1.
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May 20, 2009
How to change Icon of my form dynamically suppose when form load i want to check two flags
if flag=1
me.icon= BrandIcon
if flag=2
me.icon=ProductIconadil
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Mar 25, 2009
I need to change the contextmenustrip width dynamically, by default the contextmenustrip width depends on the text length of the ToolstripmenuItems.
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Apr 1, 2011
I have a label, let's call it LblA. I have a SqlDataSource, let's call it sds. Now, I have selected out and managed to get specific values using the select function. I want to set LblA's text to the value selected out of sds. I need this to occur every 5 (or as many as I specify really) seconds. I orignally used a timer object, however, for any of you who have used the timer object before, it likes to refresh the page, this makes it very hard to navigate off of the page; not only that, it's sloppy. Does anybody know a way to easilly update LblA's text from sds without refreshing the actual page.
I've read around and came to the conclusion that I need to use ajax, err... jQuery. However, I really don't know anything about the two except that they are both Javascript libraries? I need a simple way, you might even have to explain it to me like I'm an idiot.
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Mar 12, 2009
Is there a way to dynamically change the shape to be drawn.
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Aug 21, 2010
I am using vb.net and SQL server 2005 I have a project with database classes which are generated from database objects. That is I add a dataset to the project and drag and drop a database object onto it. The problem with this is that I have to give a connectionstring which is stored in the code. This is ok while developing the application. But runtime I want to use another connectionstring, both for security reasons and because each user of the application will correspond to a database user (SQL) and shall have a corresponding connectionstring. Is there an easy way to do this without having to restore to plain all datasets and do everything myself?
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Jun 18, 2009
Suppose I have a class that represents a product to be priced using one of a number of different pricing strategies. This pricing occurs hundreds of times per second, so to eliminate repetitive if/else statements I am instead using a delegate to launch the appropriate strategy, like so:
Private Delegate Sub PricingModel(ByVal params As PricingParameters)
Private myPricingModel As PricingModel
Private myPricingParameters As PricingParameters[code].....
But this doesn't look right to me (though it seems to work). Is there an accepted/better way of doing this? Or is this the standard way? Or is this just simply a doomed approach from the start?
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Oct 26, 2009
We have a website that uses a bog-standard default sitemap with security trimming as follows[code]...
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May 10, 2010
I'm trying to make an application to do mathematical equations, but I also want to implement error checking. So that if someone doesn't put anything in one of the fields the output textbox will say "Error".
But the problem is that I already declared the variables I used as a numeric value, in my case decimal.
So, when I make an if statement that says if inputbox1="" then outputbox1="Error" it doesn't work.
I think that in order to get this to work I would have to have it setup so that the variable that is exported to the text property of outputbox1 could switch between being declared as a decimal or string value based on what the user put into the textboxes. But I'm not sure how to go about this. Declaring the variables inside the if/elseif statements won't work because the variables need to be declared before they are calculated within my if/elseif statements.
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Jun 22, 2010
I have only 1 Label in my form. There is no text in Label1. I want that when I run the project, the label has any word or number in it like '1'. I want that when I run the project again, the word or number in the label should be changed to '0'. The name of my label is Label1.
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Apr 13, 2012
I have a jQuery function that removes a row when the CheckBox is clicked. However, I need to also adjust the rowspan property because there are now fewer rows in the table. How can I do this in jQuery?
[Code]...
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May 12, 2011
I have a pair of dropdown lists, they are linked in the sense that in it is basically a 2-d array. I have a list of accounts, and a list of domains for each account. So based on which account the user selects from the dropdown, I need to populate the domain list with the appropriate selections. Is there a way I can do this without [code]...
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Dec 26, 2007
we have project in VB.NET (Win forms), I need to increase Textbox fontsize dynamically on selecting the Expand button, Please let me know how to Increase and descrease the fontsize dynamically.
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Apr 19, 2011
I have a table layout panel it has 3 rows and a column in first row I have a toolstrip having two buttons and in third I have a grid first row is absolute, second is absolute and third is autosize Now on resize event or toolstrip If I change the size of first row dynamically third row shows odd behavior.For a value of first row ,third row (grid) sometimes overlaps the first rows control and sometimes too far from it .
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May 3, 2010
I need to know how to dynamically change the datasource of a rdlc file.
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May 7, 2010
How to change the size of RectangleShape or OvalShape at runtime?
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Mar 11, 2009
I am working on a program, obviously, and was wondering if there was a way to dynamically alter whether or not the program started with Windows. If there is a way that doesn't delve to heavily into API that would be wonderful.
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Aug 11, 2009
the following code will update the combobox list with new entries and even move repeated entries to the top of the list. I want to save the list so that the next time a user opens the program, the previous list appears in the combobox. Not sure how to accomplish that.
Private Sub btnCheck_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnCheck.Click
're-declare "strComputer" to get value from combobox "combComputer"
Dim strComputer As String = combComputer.Text[code]....
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Apr 9, 2010
Is there a way to change label text at run time?. I don't want to annoy users with popup. So planning to display error in a label if its text could be changed.
So far I have included a Main Form which has a label lblErrorFeedback which is not visible initially and I have done this but does not work.
lblErrorFeedback.Visible = True
lblErrorFeedback.Text = ""
lblErrorFeedback.TextAlign = ContentAlignment.MiddleRight
lblErrorFeedback.Text = "Error Occured"
Is there a better way to show the error with out popups?
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Jul 14, 2009
I read in a book about changing font size in a label via a scrollbar. I was wondering if it is possible to do this with a rich text box.I have the following code
Private Sub vsbHeight_Change()
rftOutput.FontSize = vsbBar.Value
rftFontHeight.Caption = vsbBar.Value
[code].....
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Jul 3, 2009
I have some Tables in an Access DataBase with the same structure and different names. I wish to use one only form (Page) to view data. I must change the name of the Table contained in the SelectCommand but Im not able to do so.
<asp:AccessDataSource ID="AccessQuadent" runat="server" DataFile="~/App_Data/QuaAdmin.mdb">
SelectCommand="SELECT * FROM [QuaGen] ORDER BY [FileDate]desc">
[code].....
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Feb 28, 2010
I don't understand why I can't change forecolor for my textbox. The code seems to me correct, is there any reasons why color won't change in a form this is sub procedure to change color[code]...
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Nov 11, 2010
how do i change the file permissions dynamically by creating a interface for it..?i am using vb.net..so pls tell me how to go abt with the coding..
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