问题描述
我尝试了以下方法让我的文本框文本自动滚动:
I tried the following to get my Textbox text to automatically scroll:
我使用的步骤非常简单:
The steps I am using are pretty trivial:
- 将文本框拖到表单上.
- 将文本框更改为多行.
- 添加垂直滚动.
- 使用 AppendText() 将文本添加到文本框.
尽管尝试了此处提到的解决方案,但文本不会自动滚动:
The text does not automatically scroll, despite trying to solutions mentioned here:
我该怎么做自动滚动到多行文本框的底部?
这是什么原因造成的,我该如何解决?
What could cause this and how do I fix it?
更新:如果我创建一个按钮并使用它来调用 AppendText() 我会得到所需的行为.但是,如果我尝试从表单的构造函数或 Load() 事件调用 AppendText,那么我会得到附加的文本,但 TextBox 不会滚动.这不是一个重复的问题,因为我过去没有看到有人发布过这个问题.
UPDATE: If I create a button and use it to call AppendText() I get the desired behavior. However, if I try to call AppendText from the form's constructor or Load() event then I get the appended text but the TextBox does not scroll. This is NOT a duplicate question as I haven't seen anyone post this problem in the past.
推荐答案
由于表单在构造函数和加载事件期间还没有完全准备好,我不得不使用一个任务让它在它准备好后滚动:
Since the form isn't quite ready during the constructor and load event, I had to use a task to get it to scroll after it becomes ready:
p>
这里是被调用的方法:
Here is the method that gets invoked:
void scroll()
{
this.Invoke(new MethodInvoker(delegate()
{
textBox1.SelectionStart = textBox1.Text.Length;
textBox1.ScrollToCaret();
}));
}
它通过放置在加载事件中的这个任务被调用:
It gets invoked via this task placed in the load event:
Task task1 = new Task(new Action(scroll));
task1.Start();
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