WPF:创建对话框/提示
WPF:创建对话框/提示
提问于 2010-05-09 11:08:13
我需要为用户输入创建一个包含TextBox的对话框/提示符。我的问题是，在确认对话框后如何获取文本？通常，我会为此创建一个类，它会将文本保存在属性中。然而，我想使用XAML设计对话框。因此，我必须以某种方式扩展XAML代码以将TextBox的内容保存在属性中-但我猜这在纯XAML中是不可能的。实现我想要做什么的最好方法是什么？如何构建一个可以从XAML定义的对话框，但仍然可以以某种方式返回输入？谢谢你的任何提示！
回答 3
Stack Overflow用户
回答已采纳
发布于 2010-05-09 11:16:15
对我来说，“负责任”的回答是建议为对话框构建一个ViewModel，并在TextBox上使用双向数据绑定，以便ViewModel具有一些"ResponseText“属性或其他属性。这很容易做到，但可能有些过头了。
实用的答案是只给你的文本框一个x:Name，这样它就会成为一个成员，并在类后面的代码中将文本作为一个属性公开，如下所示：
<!-- Incredibly simplified XAML -->
<Window x:Class="MyDialog">
<StackPanel>
<TextBlock Text="Enter some text" />
<TextBox x:Name="ResponseTextBox" />
<Button Content="OK" Click="OKButton_Click" />
</StackPanel>
</Window>然后在你的代码中...
partial class MyDialog : Window {
public MyDialog() {
InitializeComponent();
}
public string ResponseText {
get { return ResponseTextBox.Text; }
set { ResponseTextBox.Text = value; }
}
private void OKButton_Click(object sender, System.Windows.RoutedEventArgs e)
{
DialogResult = true;
}
}然后使用它..。
var dialog = new MyDialog();
if (dialog.ShowDialog() == true) {
MessageBox.Show("You said: " + dialog.ResponseText);
}Stack Overflow用户
发布于 2013-07-23 21:29:26
编辑:可与nuget https://www.nuget.org/packages/PromptDialog/一起安装
我只是添加了一个静态方法来调用它，就像调用MessageBox一样：
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
x:Class="utils.PromptDialog"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
WindowStartupLocation="CenterScreen"
SizeToContent="WidthAndHeight"
MinWidth="300"
MinHeight="100"
WindowStyle="SingleBorderWindow"
ResizeMode="CanMinimize">
<StackPanel Margin="5">
<TextBlock Name="txtQuestion" Margin="5"/>
<TextBox Name="txtResponse" Margin="5"/>
<PasswordBox Name="txtPasswordResponse" />
<StackPanel Orientation="Horizontal" Margin="5" HorizontalAlignment="Right">
<Button Content="_Ok" IsDefault="True" Margin="5" Name="btnOk" Click="btnOk_Click" />
<Button Content="_Cancel" IsCancel="True" Margin="5" Name="btnCancel" Click="btnCancel_Click" />
</StackPanel>
</StackPanel>
</Window>和后面的代码：
public partial class PromptDialog : Window
{
public enum InputType
{
Text,
Password
}
private InputType _inputType = InputType.Text;
public PromptDialog(string question, string title, string defaultValue = "", InputType inputType = InputType.Text)
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(PromptDialog_Loaded);
txtQuestion.Text = question;
Title = title;
txtResponse.Text = defaultValue;
_inputType = inputType;
if (_inputType == InputType.Password)
txtResponse.Visibility = Visibility.Collapsed;
else
txtPasswordResponse.Visibility = Visibility.Collapsed;
}
void PromptDialog_Loaded(object sender, RoutedEventArgs e)
{
if (_inputType == InputType.Password)
txtPasswordResponse.Focus();
else
txtResponse.Focus();
}
public static string Prompt(string question, string title, string defaultValue = "", InputType inputType = InputType.Text)
{
PromptDialog inst = new PromptDialog(question, title, defaultValue, inputType);
inst.ShowDialog();
if (inst.DialogResult == true)
return inst.ResponseText;
return null;
}
public string ResponseText
{
get
{
if (_inputType == InputType.Password)
return txtPasswordResponse.Password;
else
return txtResponse.Text;
}
}
private void btnOk_Click(object sender, RoutedEventArgs e)
{
DialogResult = true;
Close();
}
private void btnCancel_Click(object sender, RoutedEventArgs e)
{
Close();
}
}所以你可以这样称呼它：
string repeatPassword = PromptDialog.Prompt("Repeat password", "Password confirm", inputType: PromptDialog.InputType.Password);Stack Overflow用户
发布于 2013-07-03 17:47:04
Josh的回答很棒，都要归功于他，不过我稍微修改了一下：
MyDialog Xaml
<StackPanel Margin="5,5,5,5">
<TextBlock Name="TitleTextBox" Margin="0,0,0,10" />
<TextBox Name="InputTextBox" Padding="3,3,3,3" />
<Grid Margin="0,10,0,0">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"/>
<ColumnDefinition Width="*"/>
</Grid.ColumnDefinitions>
<Button Name="BtnOk" Content="OK" Grid.Column="0" Margin="0,0,5,0" Padding="8" Click="BtnOk_Click" />
<Button Name="BtnCancel" Content="Cancel" Grid.Column="1" Margin="5,0,0,0" Padding="8" Click="BtnCancel_Click" />
</Grid>
</StackPanel>背后的MyDialog代码
public MyDialog()
{
InitializeComponent();
}
public MyDialog(string title,string input)
{
InitializeComponent();
TitleText = title;
InputText = input;
}
public string TitleText
{
get { return TitleTextBox.Text; }
set { TitleTextBox.Text = value; }
}
public string InputText
{
get { return InputTextBox.Text; }
set { InputTextBox.Text = value; }
}
public bool Canceled { get; set; }
private void BtnCancel_Click(object sender, System.Windows.RoutedEventArgs e)
{
Canceled = true;
Close();
}
private void BtnOk_Click(object sender, System.Windows.RoutedEventArgs e)
{
Canceled = false;
Close();
}然后在别的地方叫它
var dialog = new MyDialog("test", "hello");
dialog.Show();
dialog.Closing += (sender,e) =>
{
var d = sender as MyDialog;
if(!d.Canceled)
MessageBox.Show(d.InputText);
}页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/2796470
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