Use Blazor like WinForm. Just new a component and show it like here:

var form = new Component();
await form.ShowAsync();

Live Demo

1.Usage

Note that the root namespace is BcdLib.Components

1.1.Add css and js to index.html or _Host.cshtml

+    <link href="_content/BcdLib.BcdForm/index.css" rel="stylesheet">
 
+    <script src="_content/BcdLib.BcdForm/index.js"></script>

1.2.Mount BcdContainer in App.razor

<Router ...>
   ...
</Router>

+ <BcdFormContainer />

1.3.Provide IServiceProvider for BcdLib in Main method of Program.cs

For server side:

+ using BcdLib.Components.Extensions;

public static void Main(string[] args)
{
    var host = CreateHostBuilder(args).Build();
+   host.Services.UseBcdForm();
    host.Run();
}

For WASM:

+ using BcdLib.Components.Extensions;

public static async Task Main(string[] args)
{
	var builder = WebAssemblyHostBuilder.CreateDefault(args);
	builder.RootComponents.Add<App>("#app");
		...
	var host = builder.Build();
+	host.Services.UseBcdForm();
	await host.RunAsync();
}

1.4.Write components and inherit from BcdForm

You must override InitComponent method. To remind developers to set some properties of the component, such as Title, it is defined as an abstract method.

Sample:

@inherits BcdForm

...

@code {
    protected override void InitComponent()
    {
        ...
    }
}

1.5.Using in your component

Jsut like using winform:

var form = new BcdFormChild();
await form.ShowAsync();

1.6.Examples

See BcdSample.Common/BcdForms for examples.

2. Be careful!

You cannot interact with child components in the root component that inherits BcdForm (only limit to the root component), such as EventCallback or @bind.

But you can using Action or Func instead of EventCallback, because Action or Func do not need a RenderHandler.

Demo see BcdLib/BcdSample.Common/BcdForms/Nesting.razor.

3.BcdForm members

3.1.Public properties

Property	Type	Summary	Default
Title	string	the title of form. Default value is BcdForm	"BcdForm"
Name	string	Unique identification, it will be used as the Id attribute of the form root DOM. If it is not defined, it will be generated by default	Bcd-[Guid]
Width	int	The width of the form, in pixels	520
MinPosition	MinPosition	Where the form is minimized	MinPosition.RightBottom
BodyStyle	string	form body's style	null
DestroyOnClose	bool	Remove from DOM when closing. If DestroyOnClose is false, be sure to use a global variable to accept the instance of BcdForm	true
EnableHeader	bool	Allow header to be displayed	true
ShowMask	bool	Allow Mask to be displayed. Default is false	false
MaskClosable	bool	Whether to close the form when the mask is clicked, if ShowMask is true.	true
MaskStyle	string	the style of Mask, if ShowMask is true.	null
MinimizeBox	bool	Allow minimization	true
MinimizeBox	bool	Allow maximum	true
Draggable	bool	Allow drag	false
DragInViewport	bool	Drag is only allowed in the viewport, if Draggable is true.	true
Visible	bool	Only can get. Whether the form is visible or not	--
HasDestroyed	bool	Only can get. Whether the form has been removed from DOM	true
FormState	FormState	Only can get. The form's state: maximize, minimize or normalize	FormState.Normal
Centered	bool	centered Modal	false
Footer	RenderFragment?	modal footer	null
StickyFooter	bool	fix the footer at the bottom of the modal	false

3.2.Protected properties

Property	Type	Summary	Default
ServiceScope	IServiceScope	readonly. IServiceScope for accept dependent injection services. If you use ServiceScope in the subclass, note that it will be released at Dispose; If you don't use ServiceScope in the subclass, you can still use ShowAsync after Disposed.	--
ServiceProvider	IServiceProvider	readonly. IServiceProvider for accept dependent injection services.	--
IsDisposed	bool	readonly. Has the object been released	false

3.3.Life cycle

Name	Type	Summary	parameters	return
InitComponent()	protected abstract	InitComponent will be triggered in constructors, and it's before OnShowingAsync when the form is not in the DOM.	--	void
OnShowingAsync(CancelEventArgs e)	protected virtual	Trigger before displaying form. The display can be cancelled by CancelEventArgs.	--	Task
OnClosingAsync(CancelEventArgs e)	protected virtual	Trigger before closing form. The close can be cancelled by CancelEventArgs	--	Task
OnDestroyingAsync(CancelEventArgs e)	protected virtual	Trigger before the form destroying (removing) from DOM. The destroy Can be cancelled by CancelEventArgs	--	Task
JsInvokeVoidAsync(string func, params object[] args)	protected	the proxy of IJsRuntime.InvokeVoidAsync	see IJsRuntime.InvokeVoidAsync	Task
JsInvokeAsync(string func, params object[] args)	protected	the proxy of IJsRuntime.InvokeAsync	see IJsRuntime.InvokeVoidAsync	ValueTask
InvokeStateHasChanged()	protected	StateHasChanged adapter	--	void
InvokeStateHasChangedAsync()	protected	InvokeAsync(StateHasChanged) adapter	--	Task
OnAfterRender(bool firstRender)	protected virtual	it will trigger in OnAfterRenderAsync, and It will be called before AfterBcdRenderAsync	firstRender: Is the form rendered for the first time	void
OnAfterRenderAsync(bool firstRender)	protected virtual	it will trigger in OnAfterRenderAsync	firstRender: Is the form rendered for the first time	Task
Dispose(bool disposing)	protected virtual	dispose resources	disposing: true to dispose the form's resources	void

4.OS Reference

1. AntDesign: form's style

5.License