I/we (my class) created a usercontrol that included a picturebox and a timer. We declared the public variable to access the timer enabled property. Placing the user control onto a Form we are able to enable the timer. However, when we went to declare an array for the control we could not access the properties... We successfully declared control arrays using base class control...
View 11 RepliesI have made a usercontrol, it has a property that has a PictureBox datatype. When the usercontrol is dropped on a Form from the toolbox, I want the picturebox property (in the property window) to be showing all the picture boxes (names) that are on the form as a dropdown so I cant select them. How do I do that?
View 6 RepliesWell i have a usercontrol with a property "ClientScript" and in the aspx file where i use the usercontrol i set the value to [code]the problem here is that the is litterly passed to the property and not parsed first and replaced by the ClientID..I had the same clientscript applied to a buttons OnClientClick and there it worked...Must i apply some sort of attribute to the property to get this working? [code] i know that im saving to a local variable and that it will be cleared on reload and so on but thats not the problem here.
View 1 RepliesI have a control with a inner TextBox. I want to make a direct relationship between the Text property of the UserControl and the Text property of the TextBox. The first thing I realized is that Text was not being displayed in the Properties of the UserControl. Then I added the Browsable(true) attribute.
[Browsable(true)]
public override string Text
{
[code].....
I have created a usercontrol in VB2008 that draws a rectangle and has the ability to apply Border3DStyles to the control.The problem I have is being able to select which sides to apply the border on during design time.If you look at the BorderSides property of the ToolStripStatusLabel you will see how it lets you select the sides to apply the border to.
View 5 RepliesI am making an UserControl which has several properties. One of them should have a specific range of the value - it should only be possible to set the value of the property with a number from 1 to 255. 0 should not be possible, because some calculations are done in which is divided by this property's value. I thought I could use a Byte as type, but a Byte can contain 0 as well. I would like to be able to set a limit for the value of this property, and that an error is shown in the Designer when, in this case, 0 is entered. I mean an error window like you get when filling in 0 for the interval of a Timer. Is this possible with an UserControl as well?
View 2 RepliesI have developped a usercontrol, but I can't seem to find how to databind on a property of the usercontrol in a detailsview.[code]
View 1 RepliesI am trying to add an ArrayList property to a UserControl with the following
Private _hist As ArrayList
Public Property History() As ArrayList
Get
Return _hist
End Get
[Code]...
I get an 'Object reference not set to an instance of an object' error.
In the book I am reading the writer shows code for adding the WordWrap property to a class which inherits System.Windows.Forms.UserControl. But what is the point? There is nowhere to insert strings! Also he shows how to add an event by embedding a Combo in an instance of the class and using its SelectedIndexChanged event to raise the event for the UserControl; again what is the point?
View 5 RepliesI have an imagelist control in a usercontrol I made. I would like to create a property for this usercontrol, to select multiple images (in an 'openfiledialog'), and adding them to the imagelist inside the usercontrol. So, what's the type of this property?
Public Property thelistofimages as [?]
It should be an array of images I guess. And then in the 'set' of the property it would add all the images to the imagelist.
defauld the usercontrol create(when is used) the backgroundimage property, but these property can be blocked? i'm asking these, because i need the entire control in that property
View 11 RepliesI need to set the default property of a dotNet Control used by an VB6 Application.
<ComClass(myControl.ClassId, myControl.InterfaceId, myControl.EventsId)> _
<DefaultProperty("NewProperty")> _
Public Class myControl
[code]....
I am programatically creating instance of usercontrol as shown below
[code]...
I have two public properties in my usercontorl like clerkName and RespName. How can I set those values in the above code. Intellisense is not showing ClerkName and respName Properties.
I have two UserControls already loaded how to change TextBox text property on a UserControl from the other loaded one.
View 1 RepliesI have been making a control and have added a property for a list(of CustomClass). The custom class contains a string, an image and a list of another custom class which contains a string and an image. I have added this property to the designer by adding the browsable attributes and all appears to work correctly with this.
My problem comes when running the program. I can set all of the values within the property and I can go back to them and they are saved, however, as soon as I run the program, the values are wiped out as the property is set to Nothing.In order to allow my property to be edited and saved, I realize that I must initialize the list and have done so in the accessor method of the property (if the property's value is nothing).
I have modified the values in the designer and placed a breakpoint on all of the items which use the property and it's underlying field, as well as on the property's methods itself. The first breakpoint hit is of it being accessed and the value is always nothing.
I'm not sure where the values are supposed to be stored as I have checked the designer code where it would normally store types such as strings and I have checked the resources to see if they have been saved there (like an image would be). After running the code, the values in the designer are wiped out also.
[Code]...
DataContext db = new DataContext(MyProject.Properties.Settings.Default.MyString)I am trying to convert this app to VB.NET but VB.NET does not seem to have a .Properties on the project. I am probably confused about what that C# is actually doing. I assumed it was trying to get the string out of the app.config (both
View 6 RepliesHow can I create the property... type the combobox? for now I found alone this that it goes in mistake
[Code]....
I coded a very small website bot in C# using the default WebBrowser control. Actually almost everything is working the way it is supposed to work, yet I seem to have problems with the very last step of my automation.
The website was built using several iframes. This isn't much of a big deal as I simply access those frames and their elements using
webBrowser1.Document.Window.Frames[0].Document.GetElementById("element").InvokeMember("click");
This however does not work when the source of the IFRAME is being hosted on a different domain than the actual website. As I searched the internet for an answer to my problem I stumbled across an MSDN article mentioning this specific problem and they were referring to safety measures against cross site scripting which might be the reason for this error.
I couldn't really find a way of disabling this feature so I moved on and decided to recode everything to work with geckofx-12 instead of the default (IE based) web browser control, yet I ran into similar issues...
My question is: Is there any way I can bypass this annoying behaviour? I don't really care about security concerns or on whether geckofx or the default web browser control is being used, I would just like to programmatically access the elements of a site which is being hosted on a different domain without running into an UnauthorizedAccessException.
I have made a front-end application in Visual Basic .NET that will store data entered by the user in a backend Access 2003 Database. The application has other functionality as well.If the user searchs for a previous record that has been stored in the Access Database, I query the Database (SELECT ... ) using an OLEDB Connection and then display the records on a Datagrid on my Form. Everything is working fine, however, the Column Headings of the Datagrid are the Field Names in my Database (FirstName, LastName,...) rather than Caption Values (First Name, Last Name,... )
I tried looking up the net, but most of the topics addressing a similar problems use DAO, and I understand that it is not completely supported in VB .NET. I am fairly new to VB .NET and I am not quite sure how to address the problem or where I am going wrong. I tried using FirstName.Caption but that gives a Runtime error (One or more parameters missing from the Sentence)
I just created a "Usercontrol" in WINFORMS- it just contains 1-Button with some style.And i need to use the same as array(10) and load it to a form.
Ex:Dim myButton() As Button = New ucSpecialButton(dataset4Category(i).Tables(0).Rows.Count - 1) {}
Here my usercontrol name is ucSpecialButton can we create a ONE-Dimensional Array of a WINFORM usercontrol.?
In my Site.Master.vb file, I have a custom User object:[code]Now in one of the content pages, I want to be able to see if a user is logged in. I figured if the object u was declared in the Site Master, I could use it in the pages that derive from the Site Master. For example, I want to do:[code]
View 2 RepliesI have an app with 24 different Forms. They have some security options based on which the 5 different buttons Submit, Approve, 2nd Approve, 3rd Approve, Reject etc get enabled disabled.Now I designed a MainForm that has all the buttons and the security code for them. I have created eachform as a usercontrol and load them dynamically based on which form the user wants. My loading works perfectly fine. I load the control and Add it to the place holder in the Page load event of the main page.
Now when the user selects the Submit button I want to call the Save method inside the usercontrol of the Form as each form will have a separate Save. So when I try this code snippet I get the Null reference error. Do let me know how to resolve it.
Private UCDynamic As UserControl
Then on Page Load event I use this code
Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
If not Me.IsPostBack
UCDynamic = LoadControl("Controls/BkCode.ascx")
Me.PlaceHolderForm.Controls.Add(UCDynamic)
End if
Then on the ButtonClick Event for Submit I do this
Protected Sub Save_OnClick(ByVal sender As Object, ByVal e As EventArgs)
Save()
End Sub
[code]....
Thats where I get the cast Null reference error. So is it that after post back the control no longer exist on the page.
Any some simple examples of how arrays can be put in a Class Module? The examples should show how the array is used and accessed in a form.
View 3 RepliesI have a structure which includes this...
Structure MasterStruct
<VBFixedArray(98)>
End Structure
When I create the code to initialize the Sections array like this...
Dim MasterX as MasterStruct
Dim Temp as Integer
For Temp = 0 To 98
MasterX.Sections(Temp) = 0
Next
VS 2008 tells me that MasterX.Sections "is not an array or method, and cannot have an argument list."
I have my app that does some complicated function and adds some values to an array, but then later I need to access the strings, I have the index number but not the string so how can I find that string again?
View 2 RepliesI'm trying to write some of my own linear algebra methods, and I'd like them to work independent of the number of dimensions of the array. However, there doesn't seem to be any generic method, that I can see, for looking up a particular element in an array of arbitrary size. I mean I could write code to find the rank and then use (), (,), (,,), (,,,), etc, but that seems rather cumbersome.
View 4 RepliesI want to set a property of an object that is an array type. If I was declaring and initialising an array of objects, I'd do this: Dim x() as SomeObject = {obj1, obj2}
I don't seems to be able to do something similar with the property, can you do this, does anyone know the correct syntax? myObj.ArrayProperty = {obj1, obj2}
I get Expression Expected Error on the first {
Infer Off
Explicit On
Strict On
Answer : myObj.ArrayProperty = New objType() {obj1, obj2}
I have an array which originally was a Variant array in VB6. Example code in VB6:
ListBoxDrawings.List(X1, Y1) = myArray(X2, Y2)
myArray(A, B) = ListBoxDrawings.List(I, C)
After running it through ArtinSoft's VBUC, its values are handled using GetValue & SetValue.Example code in VB.NET: (ignore conversion to ListView)
ListViewDrawings.Items(X1).SubItems(Y1).Text = CStr(myArray.GetValue(X2, Y2))
myArray.SetValue(ListViewDrawings.Items(I).SubItems(C).Text, A, B)
Since VB.NET doesn't do Variants, I figured out that the array should be typed as a 2D String Array. It seems like there's no reason to use GetValue/SetValue, as the former returns an Object and the latter takes one. This means that I'd have to cast the returned object as a String (Cstr) if I wanted to assign it to a variable, which seems like a pointless extra step that might introduce errors. Also, since the method has lots of overloads, the code might not be as clear. Is there any advantage to using SetValue / GetValue, or should I just consider that an artifact of VBUC converting a Variant, and access the array directly like the original code did?
VB.NET without Get/Set methods:
ListViewDrawings.Items(X1).SubItems(Y1).Text = myArray(X2, Y2)
myArray(A, B) = ListViewDrawings.Items(I).SubItems(C).Text
I have the following function,
Dim results() As Object = Me.Invoke("webdirect", New Object() {Company, LocationCode, CustomerNumber, OrderNumber, OrderRef, OrderDate, WebLines})
o_Company = CType(results(1),System.Nullable(Of Integer))
o_LocationCode = CType(results(2),String)
o_CustomerNumber = CType(results(3),String)
[Code] .....
So the return type of this function is a string, but I would like to get it back to its original form so I can access the individual sections i.e. o_LocationCode,o_CustomerNumber, etc how can I do that ?
Entire functions looks like this
Public Function webdirect(<System.Xml.Serialization.XmlElementAttribute(IsNullable:=true)> ByVal Company As System.Nullable(Of Integer), <System.Xml.Serialization.XmlElementAttribute(IsNullable:=true)> ByVal LocationCode As String, <System.Xml.Serialization.XmlElementAttribute(IsNullable:=true)> ByVal CustomerNumber As String,
[Code] .....
Called like this
Dim returnArray As String
returnArray = client.webdirect(10, "123", "123", "123", "147", "2011-11-1", webLinesArray, 10, "", "", "", "", "", webRespArray)
No errors on run time but the string seems to be just blank, thats why i was wondering how I convert the string back to the array so I can access the individual elements.
I have MainLayout.master that has UC_Menu.ascx on it. I have a page named Customer.aspx that uses MainLayout.master. Customer.aspx also contains a UserControl named UC_Details.ascx.How can I have UC_Menu.ascx call a function that is in UC_Details.ascx with this scenario?
View 3 Replies