问题
I have a .NET Winforms app that is showing odd edges that I can't get rid of. The edges only appear when <dpiAware> is set to true in app.manifest. I'm on Windows 10 with a high-DPI screen. See the picture below. Any ideas?
回答1:
Check whether you use next settings, in:
app.config file:
<System.Windows.Forms.ApplicationConfigurationSection>
<add key="DpiAwareness" value="PerMonitorV2" />
</System.Windows.Forms.ApplicationConfigurationSection>
Main() of you application, you set these:
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Designer file of you form, the properties of the form:
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
The problem, you described above, can be reproducible when you use 2 monitors with different dpi scale. Your main monitor uses 200% and your secondary 100%. To fix it you can change the "primary" monitor setting to change the main monitor
来源：https://stackoverflow.com/questions/55108044/how-to-get-rid-of-this-edge-in-net-winforms-app