如何将自定义 UserControl 显示为对话框？

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最佳答案

Place it in a Window and call Window.ShowDialog. (Also, add references to: PresentationCore, WindowsBase and PresentationFramework if you have not already done so.)

private void Button1_Click(object sender, EventArgs e)
{
Window window = new Window
{
Title = "My User Control Dialog",
Content = new MyUserControl()
};


window.ShowDialog();
}

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As far as I know you can't do that. If you want to show it in a dialog, that's perfectly fine, just create a new Window that only contains your UserControl, and call ShowDialog() after you create an instance of that Window.

EDIT: The UserControl class doesn't contain a method ShowDialog, so what you're trying to do is in fact not possible.

This, however, is:

private void Button_Click(object sender, RoutedEventArgs e){
new ContainerWindow().ShowDialog();
}

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If the answer by 'sixlettervariables' is modified as so, it works

private void button1_Click ( object sender, RoutedEventArgs e )
{
Window window = new Window
{
Title = "My User Control Dialog",
Content = new UserControl ( ),
Height = 200,  // just added to have a smaller control (Window)
Width = 240
};


window.ShowDialog ( );
}

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Window window = new Window
{
Title = "My User Control Dialog",
Content = new OpenDialog(),
SizeToContent = SizeToContent.WidthAndHeight,
ResizeMode = ResizeMode.NoResize
};
window.ShowDialog();

Has worked like a magic for me. Can it be made as a modal dialog?

Ans : ShowDialog it self make it as Modal Dialog.. ...

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namespace System.Window.Form
{
public static class Ext
{
public static DialogResult ShowDialog(this UserControl @this, string title)
{
Window wind = new Window() { Title = title, Content = @this };
return wind.ShowDialog();
}
}
}

The use of it maybe as simple as UserControlInstance.ShowDialog(). A better customized implementation would be by extending the Window class and customizing it using the the designer and code to get any functionality.

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I know this is for .net 3.5, but here is a workable solution for .net 2.0

  MyUserControl myUserControl= new MyUserControl();


Form window = new Form
{
Text = "My User Control",
TopLevel = true,
FormBorderStyle = FormBorderStyle.Fixed3D, //Disables user resizing
MaximizeBox = false,
MinimizeBox = false,
ClientSize = myUserControl.Size //size the form to fit the content
};


window.Controls.Add(myUserControl);
myUserControl.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
window.ShowDialog();

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You can also use MaterialDesignThemes.Wpf (downloadable on NuGet, .NET 4.5+). Then you can simply do:

{
var view = new YourUserControl();
var result = await DialogHost.Show(view, "RootDialog", ClosingEventHandler);
}


private void ClosingEventHandler(object sender, DialogClosingEventArgs eventArgs)
{ }  //Handle Closing here