C#画线并调整表格形状 [英] C# painting lines and rezising the form

问题描述

这是我的代码

This is my code

private void panel1_Paint(object sender, PaintEventArgs e)
{
   float[] dashValues = { 2, 5, 2, 5 };
   Pen blackPen = new Pen(Color.Black, 2);
   blackPen.DashPattern = dashValues;
   e.Graphics.DrawLine(blackPen, new Point(panel1.Width, panel1.Height),
                       new Point(0, panel1.Height));
}

并且panel1固定在左，右


this is my problem, when i size this form very slowly the dashes become very close together and don''t leave a gap like it is supposed to

例如在调整大小时
看起来像什么:----

它最终看起来像:----

and panel1 is anchored left,right


this is my problem, when i size this form very slowly the dashes become very close together and don''t leave a gap like it is supposed to

for example when re-sizing
what is meant to look like: - - - -

it ends up looking like: ----

推荐答案

您需要清除之前绘制的虚线.

尝试将以下代码添加到面板的调整大小方法中:

You need to clear your previous dash line that you drew.

Try adding this code to the resize method of the panel:

private void panel1_Resize(object sender, EventArgs e)
{
    panel1.Invalidate();
}

为什么要用 panel1_Paint 方法编写此代码?

如果没有任何特定原因，则应自行在form_Load中编写代码.每当您重新调整表单大小时，这将停止调用 panel1_Paint 方法.

谢谢
鲁西

Why are you writing this code in panel1_Paint method?

If there is no any specific reason then you should write your code in form_Load it self. This will stop calling panel1_Paint method every time you will re-size your form.

Thanks
Rushi

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