我试图在iPad应用程序的Xamarin.Forms中调整文本框[Entry]控件的宽度和高度,但是它没有使用WidthRequest属性设置宽度。
任何人都可以请我帮忙设置控件的宽度。
这是我使用Grid&StackLayout的XAML的相同代码,但没有一个起作用。
<Grid VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto" ></RowDefinition>
<RowDefinition Height="*"></RowDefinition>
<RowDefinition Height="10"></RowDefinition>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<Image Grid.Row="0" Grid.Column="0" Source="loginlogo.png"></Image>
<StackLayout Grid.Row="1" Grid.Column="0">
<Entry Placeholder="Enter Username" WidthRequest="20"></Entry>
<Entry Placeholder="Enter Password" WidthRequest="20"></Entry>
<Button Text="Button 1"></Button>
</StackLayout>
</Grid>
也尝试过堆栈布局
<StackLayout Spacing="10">
<Entry x:Name="txtUserName" Placeholder="Enter Username" WidthRequest="2" HeightRequest="200"></Entry>
<Entry x:Name="txtPassword" Placeholder="Enter Password" WidthRequest="2" HeightRequest="200"></Entry>
<Button Text="Button 1"></Button></StackLayout>
请注意,您必须指定HorizontalOptions与WidthRequest得到这个工作在StackLayout默认情况下,它会尝试自动扩展。
下面显示了StackLayout的示例:-
StackLayout objStackLayout = new StackLayout()
{
Spacing = 10
};
//
Entry objEntry1 = new Entry()
{
Placeholder = "Enter Username",
WidthRequest = 300,
HeightRequest = 200,
HorizontalOptions = LayoutOptions.Start
};
objStackLayout.Children.Add(objEntry1);
//
Entry objEntry2 = new Entry()
{
Placeholder = "Enter Password",
WidthRequest = 200,
HeightRequest = 200,
HorizontalOptions = LayoutOptions.Start
};
objStackLayout.Children.Add(objEntry2);
//
Button objButton1 = new Button()
{
Text = "Button1",
HorizontalOptions = LayoutOptions.Start
};
objStackLayout.Children.Add(objButton1);
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