WPF - Bind The Color Property Of A Gradientstop That Is Located In A ControlTemplate In Vb Code?
Aug 5, 2009
I need to do this in order to create a dynamic background brush for a custom control (inherits ContentControl). My custom control has two dependency properties: StartColor and EndColor. In the control template for the custom control, the control is wrapped in a border that's background is a RadialGradientBrush with gradient stops. one gradient stop's color is bound to StartColor and the other's is bound to EndColor. I have this WORKING in XAML, but I need to convert it to VB code. The border element of the control template in XAML is done with the following code:
I am just staring off using VB 2010 after using 2005 for a while. In 2005 I used a third party control to automatically make a button a default color and when the mouse rolled over it, it changed to another color and then back to the original color when the mouse left the button.
I want to be able to set this as a default for all of my buttons in my project as there are tons of buttons throughout. I found the ControlTemplate. I don't know if it is the answer or if I don't understand how it works, but I just am not getting it.
On the second line XMLObjectList is a readonly property of a ViewModel class, returning a Collections.ObjectModel.ReadOnlyObservableCollection(Of MyOrder).On the final line SelectedOrder is a property of the same ViewModel class, which allows setting and getting of a MyOrder object.
I have confirmed that XMLObjectList is being correctly referenced by renaming the property, mistyping the string, breakpoints, etc. XMLObjectList definitely references the XMLObjectList property of this particular ViewModel class.The SelectedOrder property, however, is never accessed at runtime, meaning that it isn't properly hooked up to the SelectedItem of this ListView.
I am trying to change the BackColor property of a text box , by code , but I can't do it ... I know the color value (i.e. 255;445,255) but I can't find out how can I set that value by code ... This MSDN has become so useless I can barely get any help from it .
I have default.aspx used masterpage, in master page i have a control called DefaultMenuContent, this control have a dropdownlist with autopostback, the problem is loosing the selection even if i use Is Not PostBack in control's load event, how to persist the dropdownlist selection?
I'm trying to display the serial number of the 'recipient' you selected in a textbox but I get this error:
System.ArgumentException: Cannot bind to the property or column RecipientSNo on the DataSource.
I did this to another textbox with a different query (same codes, just changed the column name from 'recipient' to 'issuer') just to debug and it works! I tried it again to the 'recipient' but it still doesn;t work.My code:
query("SELECT RecipientSNo FROM Recipient WHERE CONCAT(FirstName, ' ', MI, '. ', LastName) = '" & ReceiverName.Text & "';") Try adapter = New MySqlDataAdapter(CommandText, ServerString) table = New DataTable
[code]....
I just coped this code and changed the textbox and column names and it did not work already.. What seems to be the problem? I double checked my table and column names already.
I'm trying to do MVP where I have a view specific model that the presenter manipulates and the view binds to. There is no other connection between the presenter and view (the view fires off commands to the domain model via a gateway type pattern).
As you can guess, this makes the ability to bind to any property of any object really important.
I'm having trouble finding the correct way to bind to the Enabled property of a ToolStripMenuItem. Most controls have a .DataBindings property, but this one seems to lack it. I haven't found much info online about how to do this. Is it even possible?
but now i have another problem in datasource property that is i want to binding more than one table so that all table's data rows can be displayed in datagridveiw control. suppose i have two table as per order no..
how could i trap the error during i'm closing the form.. it's always give me "Cannot bind property" when closing.The program has a databound combobox, datagridview..how could i trap those error..
I've got a ComboBox with an ItemsSource which I've bound to a List(Of String).What I'd like to do is have the XAML update a String property when the SelectedValue of the ComboBox changes. I've seen a whole bunch of examples for TextBoxes which use
Text="{Binding Path=MyString}"sort of stuff, but I don't really think that'll be the way to go if, in future, I need to change the ItemsSource to a List(Of ObscureObject)...
With WPF how can I bind the IsEnabled property of a button to the selected row's DataGridCheckBoxColumn value of my grid? So every time the selected row of my grid changes the button will be enabled/disabled depending on the value of one of it's columns.
i have two forms. first one is main form, and 2nd is product form. there's a button in the main form which, when clicked, product form should appear. the code is as follows
productForm.Show() Me.hide()
then this error come:
" Cannot Bind to the property or column product_name on the DataSource. Parameter name: dataMember "
In silverlight, can you bind to a property that contains parameter? For example, the following doesnt seem to work. Am I missing something or is this not possible?
C# private System.Collections.Generic.Dictionary<string, string> ValuesField = new System.Collections.Generic.Dictionary<string, string>();
how to get this error becauser during i'm closing the form it will always appear.. can not bind property witht field name... i guess it's because i'm closing the form.I'm having long time to solve this problem... i can't solve because it didn't give line or part of the code has an error.. it just appear the error "Can not bind property"
anybody please help me what kind of exception do i apply that can accomodate this error... or give me the codes that will work on this error...
I would like to know if its possible to bind the property LOCATION of an object like button.[code]So that, every time I move either the hscrollbar1 or vscrollbar1 the button1.location will change or moves the object to the location of hscrollbar1.value and vscrollbar1.value. It should happen without setting its value using the SCROLL EVENT.
Public Sub Init(ByVal SelectedItems As List(Of Cheque)) Items = New BindingList(Of Cheque)(SelectedItems ) BindingSource1.DataSource = Items
[code]....
This code gets called like so:
... fmEdit.Init(myList) fmEdit.Show()
All variables are populated etc, it seems to go through the DataBindings.Add ok but when the form appears I get the error about unable to bind to a property or column called Id. I tried replacing the DataBindings.Add code to use the BindingSource1 instead of Items but I get a similar error.The names of the properties in the class match that of the name in the Databindings.Add code.
UPDATE: Here is my class:
Public Class Cheque Public Id As String Public Status As Byte
I have a file name that is found at multiple paths. I want to present this data to the user in the format of a DGV. I have a DGV with one text box column for the name, and another combobox column for the paths. I am having trouble getting the combobox column to bind to the property of the class that returns the paths.
I'm currently using a combo box to select one of many alternatives. From 5 alternatives only 1 works, when i click on any other it gives me the following error:"Cannot bind to the property or column 'xyz' on the DataSource.Parameter name: dataMember" Why is this error caused? What are the possible solutions to this error?
I created a master - detail form . I changed the name of one datacolumn in the dataset (not the source) from "alert_name" to "alert_name_new" and i saved all files.I checked the file <dataset>.xsd in the directory and i found the change was made... as expected.When i try to run the application the following error message appears: "Cannot bind to the property or column ALERT_NAME_NEW on the DataSource."
will fail with more than one instance of the WebBrowser control.what actually happen is that mycontrol object become Mycontrol and compiled vb.net application will fail with error
Member not found. (Exception from HRESULT: 0x80020003 (DISP_E_MEMBERNOTFOUND)) at Microsoft.VisualBasic.CompilerServices.LateBinding.LateGet(Object o, Type objType, String name, Object[] args, String[] paramnames, Boolean[] CopyBack)[code].....
Same code will work with vb6 app with multiple WebBrowser controls
Edit: This code is comipled with: Option Strict Off
EXCEPTION : Cannot bind to the property or column Site on the DataSource.{10}Parameter name: dataMember
details I am connecting to an Access database and using .net 3.5 and writing the code in VB. In this database I have a table named Sites with a column named Site and when I try to use the line of code above I get the exception noted. I was under the impression that I could explicitly name the column that I need to use in my control (combo box).
I'm currently using a combo box in vb.net to select one of many alternatives. From 5 alternatives only 1 works, when i click on any other it gives me the following error:"Cannot bind to the property or column 'xyz' on the DataSource.Parameter name: dataMember" Why is this error caused?
I'm trying to populate the list of a combobox by binding it to a datatable. Also, I want the selected value of the combobox to be bound to an object property so that when the selected value changes, it's automatically updating the object. However it's causing an error at runtime: "This causes two bindings in the collection to bind to the same property.
Parameter name: binding" I thought binding the dropdown list to a datatable and the selected value to an object were different properties but obviously I'm not getting it right.
Code:
Private Sub PopulateSiteSelect() With Me.PlanSiteSelect If _Plan.PlanID <> Nothing And _User.UserID <> Nothing And _Plan.Category <> Nothing Then
on a Windows Form, an object myObject is bound to myObjectDataBindingSource like this:myObjectDataBindingSource .DatSource = myObject on the form, i have a check box bound to the property: chkProp1 for example of the object: myObjectDataBindingSource In the code when the checkbox is clicked, I need to go in code and change another text property of the object txtProper2 for example like this:
Private Sub chkProp1_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles chkProp1.CheckedChanged
I have been working on an HTML editor, and I need to know how to make the "Preview" tab show a preview of the HTML code located in the TextBox in the "Code" tab.
I'm using Visual Basic 2010. I have my dataset in my program. I'm have several combo boxes on the form that I was able to bind the particular table with the information from each table to most of the combo boxes by dragging and dropping them onto the combo boxes. However, one combo box in particular must be populated by code. When a user selects, let's say "a" from one combo box, I need the next combo box to display information in certain tables only, based upon their choices in the previous combo box.
