Question

我的WPF应用程序中有几个弹出窗口，工作正常。

但是，最后一个不接受文本框中的焦点或输入。而且我不明白为什么。

                    <Label x:Name="lblSearch" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="1" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,5" Height="30" Width="Auto">Search</Label>
                    <TextBox Name="txtSearch" Grid.Row="0" Grid.Column="1" Grid.ColumnSpan="1" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,5" Height="30" Width="200" IsReadOnly="False" IsEnabled="True"></TextBox>
                    <Button Name="btnSearch" Grid.Row="0" Grid.Column="2" Style="{StaticResource ButtonSmall}" Template="{DynamicResource BlackButton}" Margin="5">Search</Button>

                    <Label x:Name="lblReplace" Grid.Row="1" Grid.Column="0" Grid.ColumnSpan="1" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,5" Height="30" Width="Auto">Replace</Label>
                    <TextBox Name="txtReplace" Grid.Row="1" Grid.Column="1" Grid.ColumnSpan="1" HorizontalAlignment="Center" VerticalAlignment="Top" Margin="0,5" Height="30" Width="200" IsReadOnly="False" IsEnabled="True"></TextBox>
                    <Button Name="btnReplace" Grid.Row="1" Grid.Column="2" Style="{StaticResource ButtonSmall}" Template="{DynamicResource BlackButton}" Margin="5">Replace</Button>

                    <Button Name="btnStopSearch"  Grid.Row="2" Grid.Column="3" Style="{StaticResource ButtonSmall}" Template="{DynamicResource BlackButton}" Margin="5">Done</Button>

                    <DockPanel Grid.Row="2" Grid.Column="0" Grid.ColumnSpan="2">
                    </DockPanel>
                </local:GridEx>
            </DockPanel>
        </Border>
    </Border>
</Popup>

我尝试使用此代码强制关注它，但无济于事：

Private searchWhere As String = Nothing
Private Sub txtTypeEditor_keyDown(sender As Object, e As Forms.KeyEventArgs) Handles txtTypeEditor.KeyDown
    If e.KeyCode = Forms.Keys.F AndAlso e.Control AndAlso Not e.Alt AndAlso Not e.Shift Then
        PopupSearch.IsOpen = True
        txtSearch.Focus()
        Keyboard.Focus(txtSearch)
        searchWhere = "TypeEditor"
        e.Handled = True
    End If
End Sub

Private Sub Popup1_Opened(sender As Object, e As EventArgs) Handles PopupSearch.Opened
    txtSearch.Focus()
    Keyboard.Focus(txtSearch)
End Sub

看来txtTypeEditor保持焦点。知道如何模糊吗？

我现在有一个解决方法：如果我通过聚焦另一个textBox来模糊文本框，那么弹出窗口接受焦点。

但是，如果用户单击txtTypeEditor文本框然后单击弹出窗口中的输入字段，则鼠标焦点会切换到弹出窗口，但键盘焦点会保留在文本框中。

Answer 1

这只是一个猜测：它可能与txtTypeEditor_keyDown事件在txtTypeEditor中以某种方式保留有关吗？您可以尝试使用keyPress（如果它不影响代码的任何其他部分）

vb.net wpf弹出没有焦点

1 个答案: