Question

wpf怎么给textbox的text属性指定默认值

Answer 1

this.textbox1.Text=“text”
这个在textbox的属性页里也有个Text属性，填什么，什么就是默认值。

Answer 2

它默认的是空值,this.textbox.Text=""
这里面,你填写什么,它默认的就是什么了

Answer 3

<TextBox Text="默认值"/>
像这样就可以了

Answer 4

<ControlTemplate TargetType="TextBox">
<Grid>
<TextBox Text="{Binding Text, Mode=TwoWay, RelativeSource={RelativeSource TemplatedParent}, UpdateSourceTrigger=PropertyChanged}" />
<TextBlock HorizontalAlignment="Center"
VerticalAlignment="Center"
Text="这里添上需要的默认值"
Margin="5,0,5,0"
Foreground="#FF808080"
FontStyle="Italic"
IsHitTestVisible="False"
x:Name="UserMessage"
Visibility="Hidden"/>
</Grid>
<ControlTemplate.Triggers>
<MultiTrigger>
<MultiTrigger.Conditions>
<Condition Property="Text" Value=""/>
<Condition Property="IsKeyboardFocusWithin" Value="False"/>
</MultiTrigger.Conditions>
<Setter Property="Visibility" TargetName="UserMessage" Value="Visible"/>
</MultiTrigger>
</ControlTemplate.Triggers>
</ControlTemplate>