Can you tell me please what I need to change so that I won't get these errors anymore? I've duplicated an xaml+css class and that's why I get so many errors. I've attached an image to show you the errors. Someone recommended me to change something about these 2 things but I didn't quite understand, which is why I've decided to make a new post regarding this matter.
code c1.cs:
public partial class ImagesGrid : UserControl
code xaml c1.xaml:
x:Class="KinectInfoPortal.ImagesGrid"
EDIT1:
Code for C1.xaml.cs class:
public partial class ImagesGrid : UserControl
Code for ImageGrid.xaml.cs class:
public partial class ImagesGrid : UserControl
Code for C1.xaml:
x:Class="KinectInfoPortal.ImagesGrid"
Code for ImageGrid.xaml:
x:Class="Microsoft.Samples.Kinect.ControlsBasics.ImagesGrid"
Here is the mistake:
Code for C1.xaml.cs class:
public partial class ImagesGrid : UserControl
Code for ImageGrid.xaml.cs class:
public partial class ImagesGrid : UserControl
It should be:
Code for C1.xaml.cs class:
public partial class C1: UserControl
Code for ImageGrid.xaml.cs class:
public partial class ImagesGrid : UserControl
You renamed file to C1.xaml but your class name is same as it is for ImagesGird.xaml user control due to which it is saying that its already defined changed class name as well.
You have two class with same name.
1) in ImagesGrid.xaml user control
2) in C1.xaml user control
which is obviuosly wrong.
When you duplicate a xaml/cs pair, you need to take care to change the name of the class in both the XAML file and the codebehind, basically the two lines of code you listed. Make sure that in the original class and in the new class, BOTH are different.
Related
It was taught to me that any alterations to an object on a form (change the text, make visible/invisible or change the color and so on) should be done in the corresponding form class.
But due to the large amount of such alterations done inside the project, the file has became large and hard to search through. I've read online that a Partial Class could help, but there was no explanation on how to implement this. As an easy example, I have the following 2 files:
Form_Main.cs
namespace Test
{
partial class Form_Main : Form
{
public Form_Main()
{
InitializeComponent();
}
}
}
AND Form_Main.Dataloader.cs
namespace Test
{
partial class Form_Main : DataLoader
{
public void SetText()
{
TextBox_StudentSurname.Text = "1";
}
}
}
How can I make this work? Because if I do this I get several errors in the designer.
Your main problem is the first error printed: You cannot declare different base classes in different partial implementations. I don't know which of the two base classes is the right one (the one you previously used), but as always, a class cannot have two base classes. It is legal to specify the base class only in one of the parts, but if it is specified multiple times, it must be the same.
I am working with a something.razor file and a code behind Something.razor.cs file. My partial class inherits from SomethingBase which itself inherits from ComponentBase.
This however gives errors
CS0115 .buildrendertree(rendertreebuilder)': no suitable method found to override in partial class
CS0263 partial declarations of must not specify different base classes.
However if Something inherits directly from ComponentBase there is no issue.
First question please be gentle. I'll update with code and more detail in the morning if needed.
With a code behind file you have 2 spots where you can specify the base class.
You will always have to specify it in the .razor file because you don't want the default there:
// Something.razor
#inherits SomethingBase
and then you have a choice in the .razor.cs file:
// Something.razor.cs (a)
partial class Something // take base class from other part
{
}
or
// Something.razor.cs (b)
partial class Something : SomethingBase // must use the same as other part
{
}
I would use (a) .
I have a class Employee.cs that was autogenerated by EntityFramework when i connected to a database, now i want to implement a partial class but I can't use "Employee.cs" name for that class because it already exists. Can I give other name to it and it will work? Can you explain how the compiler will know that there is another partial class of Employee.cs?
You can give the file whatever name you want like Employee.custom.cs but you have to call the class in it Employee in the same namespace as the Employee class in the other file, also with a partial modifier, and you should be good to go.
The compiler just gathers all the partial classes with the same name and compiles it into one class per name.
Compiler always works with fullname of class. If there is a project named MyProject, full name for the class would be something like:
MyProject.Employee
If You want to create class with the same name, You have to add a level of separation in naming, or if it have to be partial class with this generated class, You have to mark it also as a partial.
You can either create (in Model/Employee.cs):
public class MyProject.AnySubPath.Employee {}
Or:
In file Model/Employee.cs
public partial class MyProject.Employee {}
In file ViewModel/Employee.cs
public partial class MyProject.Employee {}
Important for You is to realize what is the partial mean & what will the compiler to with Your class: In fact the compiler will just put all the partial classes together and then compile them. Only benefit from being partial is that You can have the code split among multiple files. Excelent example for this is Windows.Forms, where You have "code-behind" file (Form1.cs) and then You have "designer" file (Form1.Designer.cs).
Also You can name the files whatever name You want, it is just common standard to have 1 class = 1 file and the class name should fit the file name.
How do I declare a textbox in the XAML code that is used in a class? I copied all the source code from the MainWindow.xaml.cs to another class because the MainWindow is getting to big.
I hope you can help me. Thanks in advance.
The following causes the error:
TextChanged="textBox_1_Kurzbeschreibung_TextChanged"
EDIT: The following statement solved the problem.
~closed.
Simple make the class partial, and then use the same name in the two classes.
public partial class MyClass
{
// code....
}
The other class need to be equal:
public partial class MyClass
{
// code....
}
From MSDN:
"Partial type definitions allow for the definition of a class, struct, or interface to be split into multiple files
See more here: http://msdn.microsoft.com/en-us/library/wbx7zzdd.aspx
workflows seem to be created straight from Xaml. How then is would it be possible to include a System.Attribute on my workflow classes?
The only ways i can think of are a bit crap:
Have a corresponding code file for each Activity.xaml:
[MyCustomAttribute("hello")]
public abstract class MyPointlessWorkflowBase : System.Activity
{
}
And then having my .xaml inherit from the base (i don't even know if this is possible)? But this sucks as i have to an extra class for each Workflow that requires the attribute.
is there anyway to code activities like they were normal classes before you slap the .xaml over it?
A XAML file generates a class with a partial keyword before it gets compiled so you can create a partial class with the same name and add the attribute there.
[MyCustomAttribute("hello")]
public partial class MyWorkflow : Activity
{
}
Alternatively you can add an attribute in XAML using the x:ClassAttributes element and add them that way.
<p:Activity x:Class="WorkflowConsoleApplication1.MyWorkflow"
xmlns:s="clr-namespace:System;assembly=mscorlib"
xmlns:my="......"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<x:ClassAttributes>
<my:MyCustomAttribute>
<x:Arguments>
<s:String>hello</s:String>
</x:Arguments>
</my:MyCustomAttribute>
</x:ClassAttributes>
</p:Activity>