设置了scrollview . verticalscrollbarvisibility = "自动"后,文本框ScrollBar不会出现

[英]Textbox ScrollBar is not coming after setting ScrollViewer.VerticalScrollBarVisibility=“Auto”


I have silverlight web app.I am showing log information in child windows.child window contain a textbox control.I have set ScrollViewer.VerticalScrollBarVisibility="Auto" but vertical scroll bar is not showing up.please help me on this.

我有silverlight web应用,我在子窗口中显示日志信息。子窗口包含一个文本框控件。我有设置滚动视图。垂直滚动条="自动",但垂直滚动条没有显示。请在这方面帮助我。

XAML

XAML

<controls:ChildWindow x:Class="LogPopUpWindow"
       xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" 
       xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
       xmlns:controls="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls"
       Width="600" Height="400" 
       Title="" HasCloseButton="False">
<Grid x:Name="LayoutRoot" Margin="2">
    <Grid.RowDefinitions>
        <RowDefinition />
        <RowDefinition Height="Auto" />
    </Grid.RowDefinitions>
    <TextBox x:Name="LogEvents" IsReadOnly="True" ScrollViewer.HorizontalScrollBarVisibility="Disabled"
     ScrollViewer.VerticalScrollBarVisibility="Visible"></TextBox>
    <Button x:Name="CancelButton" Content="Cancel" Click="CancelButton_Click" Width="75" Height="23" HorizontalAlignment="Right" Margin="0,12,0,0" Grid.Row="1" />
</Grid>

C#

c#

 public void RefreshLogs(string message = "")
    {
        StringBuilder text = new StringBuilder();
        if (string.IsNullOrEmpty(message))
        {
            if (Logger.GetLogs() != null)
            {
                Logger.GetLogs().ForEach(b =>
                {
                    text.AppendFormat("{2}{0}:  {1}{2}", b.UserTargetOperation, b.UserEventDate.ToString(), Environment.NewLine);
                    foreach (KeyValuePair<string, string> pair in b.Parameters)
                    {
                        text.AppendFormat("         {0} : {1}{2}", pair.Key, pair.Value, Environment.NewLine);
                    }
                });
            }

            LogEvents.Text = text.ToString();
        }
        else
        {
            LogEvents.Text = message;
            LogEvents.TextWrapping = TextWrapping.Wrap;
        }
    }

Button Handler Coder

按钮的处理程序编码

private void ShowLogLink_Click(object sender, System.Windows.RoutedEventArgs e)
    {

        ///Logger.GetLogs();
        ///
        LogPopUpWindow win = new LogPopUpWindow();
        win.RefreshLogs();
        win.Show();
    }

2 个解决方案

#1


0  

I would put this just in a comment but I don't have enough rep. I tried to reproduce the error you are describing of that the Vertical Scroll bar is not displaying, but when I fill the textbox with more text than it's height holds, the scroll bar shows.

我把它写在评论里,但是我没有足够的代表我试图重现你描述的错误垂直滚动条没有显示,但是当我用比它的高度更多的文本填充文本框时,滚动条会显示出来。

Is there any other portions influencing your problem that you did not list?

有没有其他的部分影响你的问题,你没有列出?

#2


0  

Issue is resolved.I added vertical scroll properties in the code and it is working.

问题是解决了。我在代码中添加了垂直滚动属性,它正在工作。

public void RefreshLogs(string message = "")
    {
        StringBuilder text = new StringBuilder();
        if (string.IsNullOrEmpty(message))
        {
            if (Logger.GetLogs() != null)
            {
                Logger.GetLogs().ForEach(b =>
                {
                    text.AppendFormat("{2}{0}:  {1}{2}", b.UserTargetOperation, b.UserEventDate.ToString(), Environment.NewLine);
                    foreach (KeyValuePair<string, string> pair in b.Parameters)
                    {
                        text.AppendFormat("         {0} : {1}{2}", pair.Key, pair.Value, Environment.NewLine);
                    }
                });
            }

            LogEvents.VerticalScrollBarVisibility = ScrollBarVisibility.Auto; // added
            LogEvents.Text = text.ToString();
        }
        else
        {
            **LogEvents.VerticalScrollBarVisibility = ScrollBarVisibility.Auto;** // added
            LogEvents.Text = message;
            LogEvents.TextWrapping = TextWrapping.Wrap;
        }
    }
}

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