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C# WPF Affecting main thread from UserControl class

I am trying to make a simple image viewer that loads images at start, creates Items with pulled SQL data and then creates Dictionary with all the Item parameters.
Then another method builds what's needed and fills StackPanel with UserControls (ITEM) that act as "links" to images.
Trying to add another image, from UserControl (NEW_ITEM) nested in View that is loaded to ContentControl in MainWindow.
public partial class fileUpload : UserControl
{
public fileUpload()
{
InitializeComponent();
}
string PathSource = #"SOURCE";
string PathToCopy = #"DESTINATION";
private void Border_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
{
PathSource = FU_source.Text;
if (!FU_fileName.Text.Contains("."))
{
MainWindow V = new MainWindow();
V.LoadCollection(); //This seems to work, but the content on MainWindow stays visible.
////Copy Inserted Item
File.Copy(PathSource,PathToCopy + FU_fileName.Text + ".png", true);
////Remove Item Preview From List
((ItemsControl)this.Parent).Items.Remove(this);
}
else
{
MessageBox.Show("ERR TEST", "ERR TEST HEADER");
}
}
}
Running LoadCollection() method does work OK if it's called from the MainWindow but does not work if called from fileUpload Class. (Program seems to do what's needed, but the user control won't disappear.)
Basically, it should refresh the whole process and refresh/refill StackPanel with new items.
I have encountered this problem many times and I think that I'm missing a key part in this.
TL;DR: I am trying to refresh MainWindows StackPanel with new Items, but the controls won't disappear if method taking care of this is called from UC Class.

Control changing control on other UserControl

I have a User Control that contains a combobox/drop down list. This user control is used multiple times and added dynamically to a panel. When I change the value of the combobox on one user control, it changes the rest? Does anyone know how to sort this?
So to clarify. When I change the value in the combobox of the top usercontrol (7002), it will change the second user controls combobox value to whatever I selected.
Thanks!
Code for adding the controls;
foreach (Common.UserDTO UDTO in BLL.User.GetAllUsers())
{
Admin_UserControls.UserBar UB = new Admin_UserControls.UserBar(UDTO);
UB.Location = new Point(0, int.Equals(pnlUserBlock.Controls.Count, 0) ? 0 : pnlUserBlock.Controls[pnlUserBlock.Controls.Count - 1].Bottom);
pnlUserBlock.Controls.Add(UB);
}
constructor/load events:
private Common.UserDTO UDTO;
public UserBar(Common.UserDTO UDTO)
{
InitializeComponent();
/* Store the passed in UserDTO */
this.UDTO = UDTO;
}
private void UserBar_Load(object sender, EventArgs e)
{
/* Setup the Drop down list */
cbRanks.DataSource = Common.Helper.GetRanksDT();
cbRanks.DisplayMember = "Rank";
cbRanks.ValueMember = "ID";
/* Setup the users */
lblUsername.Text = UDTO.Username;
cbRanks.SelectedValue = UDTO.RankID;
}

Put the above comment into an answer should others have the same issue in future.
Each instance of the UserControl that is created is bound to the same DataSet giving you this result.
Caused by the line:
cbRanks.DataSource = Common.Helper.GetRanksDT();
To resolve this simply declare a new instance each time the UserControl is created, see this post that discusses a few methods.

Having trouble with URI Image in Visual Studio 2012?

I am currently creating a C# XAML Windows Store App I have successfully gotten the app to do what i want it to do which is when I click on a listviewitem the image to the right changes, however to do this for each listview item i am having to create a bitmap image for every listviewitem.
I find it very time consuming would anybody be able to recommend a type of method i could create to save me from writing this in every listviewitem Selection_changed.
BitmapImage PlatoImage = new BitmapImage(new Uri(this.BaseUri,"example.jpg"));
PhilosopherImage.Source = PlatoImage;
Below is the original method
private void PhilosopherList_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (PhilosopherList.SelectedIndex ==1)
{
BitmapImage Aristotle = new BitmapImage(new Uri(this.BaseUri, "aristotle.png"));
PhilosopherImage.Source = Aristotle;
All i have done for the rest is insert 'else if' statements to compensate for the other 'selectedindex' I haven't created a method yet to save me time to create a new bitmap image for each listviewitem yet

It sounds like your listview items are strings.
Without using data binding, you can change the ListView items to objects that contain the string you want to display and the image url, then add a tostring() method that returns the string you want to display. Then your SelectionChanged handler can simply grab the image url from the selected item.
The listview item type would be something like this:
public class ItemType
{
public string DisplayString{get;set;}
public string ImageUrl{get;set;}
public override string ToString()
{
return DisplayString;
}
}

How to access the Items of a User Control

I have a C# Form that prints multiple instances of a User Control. Let's say that the form prints 5 instances of the User Control (Please see the link attached). How can I store/save the data inputted in all User Controls? Thanks
Here is the screenshot of the C# Form:

You'll have to store the User Controls when you instantiate them in a List or something.
You could have a class like this:
class SomeUC : UserControl
{
public SomeUC()
{
}
// A public method.
public string GetData()
{
return textBox1.Text;
}
}
Where textBox1 is the Name of a TextBox in your SomeUC
And then inside your main or something.
// Instantiate a List that will hold your UserControls, this has to be outside all methods
List<SomeUC> list = new List<SomeUC>();
// And now when you want to build your UCs
// Instantiate your UserControl
SomeUC uc1 = new SomeUC();
// Store your UserControl in a List or something (Can't help you with that)
list.Add(uc1);
Add as much as you want.
A List is not the only way you can do that, but since you don't know how many UserControls you're going to build beforehand, it makes since to use a List.
And then you can access them from the list by their index.
SomeUC uc1 = list[0];
string data = uc1.GetData();
This is an example of accessing one control (the TextBox) in your SomeUC. For other classes (such as the ComboBox) the interaction is different. Meaning you won't have a Text property in the ComboBox. You'll have to figure out things like that on youself. A little research is what it takes. You can always come back if you couldn't find a solution for something.

You can create a property like this for each item in user control.
public string DG
{
get
{
return txtDG.Text;
}
set
{
txtDG.Text = value;
}
}
Then you can access the control value by using following line in your form.
supposed you have created a usercontrol MyControl and you have placed some object of this control in FlowLayoutPenal (pnlFLP).
To get value from control
string DG = ((MyControl)pnlFLP.Controls[0]).DG;
To set value in control
((MyControl)pnlFLP.Controls[0]).DG = "1";

Try this code for accessing user control in the page
Dim txtName As TextBox = TryCast(UserControlName.FindControl("txtName"), TextBox)

Image name as string, use it to make image visible WPF with C#

I have an image name as a string. The real imagename on the form is called "image". So i get something like this:
image.Visibility = Visibility.Hidden;
string imageName = "image";
// need something here to make it usable...
changedImageName.Visibility = Visibility.Visible;
Now, a string can not be used in combination with the Visibility property.
I cant really find what i must make the string to, to make it usable for the visibility property.
If i see this page: http://msdn.microsoft.com/en-us/library/system.windows.visibility.aspx
Do I understand correct that I make it a "enum" ? And if yes, how do I get a string to that property?
EDIT 1
I see I have not been explaining it proper enough.
I forgot to mention I am using a WPF form.
on this form, I have put an image.
In the initialize part, the image get set to hidden.
so for example the imagename I named "Image"
so I use image.Visibility = Visibility.Hidden;
later on in my code, I want to make the image visible again, depending on what the user does.
so, instead if just using the name to get the image visible again, I want to use a string.
this string is looking exactly as the name of the image.
but i cant use the string in combination with the Visibility function.
but i cant find anywhere what i must make this string to, to be able to use that visibility option on it.
hope i explained a bit better now :).
Later on, i will have multiple images on the WPF window.
So the key is that i will use the string, that is corresponding with the name of the image.
Depending on what the user has input into the string, some image will or will not show.
EDIT 2
If you have:
String theName = ImageName.name
you can get the name of the image into a string, so you can do stuff with it.
i am looking for a way to do the exact opposite of this. So i want to go from a string, to that name, so after that i can use this to control the image again.
Edit 3
some example:
private void theButton_Click(object sender, RoutedEventArgs e)
{
//get the Name property of the button
Button b = sender as Button;
string s = b.Name;
MessageBox.Show("this is the name of the clicked button: " + s);
//the name of the image to unhide, is the exact same as the button, only with IM in front so:
string IM = "IM";
IM += s;
MessageBox.Show("this string, is now indentical to the name of the image i want to unhide, so this string now looks like: " + IM );
// now, this wont work, because i cant use a string for this, although the string value looks exactly like the image .name property
// so string IM = IMtheButton
// the image to unhide is named: IMtheButton.name
IM.Visibility = Visibility.Visible;
}

looks like you're using WPF, so you can create a boolean to visibility converter and use it with a boolean (and create a method that receives string if necessary) and just use:
<ContentControl Visibility="{Binding Path=IsControlVisible, Converter={StaticResource BooleanToVisibilityConverter}}"></ContentControl>
or any other converter...
check this links:
http://bembengarifin.wordpress.com/2009/08/12/setting-visibility-of-wpf-control-through-binding/
http://andu-goes-west.blogspot.com/2009/05/wpf-boolean-to-visibility-converter.html
http://msdn.microsoft.com/en-us/library/system.windows.controls.booleantovisibilityconverter.aspx
EDIT 1:
so then you will have to iterate over the images and check if your string is equals to name of the Image class.
something like this (not tested):
foreach (Image img in container.Items)
{
if img.Name == yourMagicallyString;
{
img.Visibility = Visibility.Visible;
}
else
{
img.Visibility = Visibility.Hidden;
}
}

If I understand correctly, you are trying to find a control based on the name or ID of the control. If so, try this:
Control changedImage = this.Controls.Find("image", false)[0];
Depending on what you are targeting and what version you might need to tweak a little
EDIT Updated per #Alexander Galkin comments about Find returning an array. There should definitely be some checking and whatnot but I'm leaving that up to the OP.
EDIT 2 For finding a control by name in WPF see this post.

The code I was looking for:
object item = FindName(IM);
Image test1 = (Image)item;
test1.Visibility = Visibility.Visible;