# WinformHighDPICompatibleProgram

**Repository Path**: gitmy/WinformHighDPICompatibleProgram

## Basic Information

- **Project Name**: WinformHighDPICompatibleProgram
- **Description**: 手把手教会 VS2022 设计 Winform 高DPI兼容程序 (net461 net6.0 双出)
- **Primary Language**: Unknown
- **License**: Not specified
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 4
- **Created**: 2025-09-15
- **Last Updated**: 2025-09-15

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

## 本文主要解决两个问题

* C# Winform高DPI字体模糊.
* 高DPI下(缩放>100%), UI设计器一直提示缩放到100%, 如果不重启到100%,设计的控件会乱飞.

![QQ截图20220413234355](https://user-images.githubusercontent.com/8428709/163275524-9bc8e8a8-68bc-44d2-adb8-15cdcdda00bb.png)
![QQ截图20220413234045](https://user-images.githubusercontent.com/8428709/163275119-f763b05e-8e3b-41b9-b8e6-ef4423e75be6.png)

## 建立测试程序

1. 新建.Net Windows窗体应用 (Winform)工程

![1](https://user-images.githubusercontent.com/8428709/163266315-dbff89a8-7ae1-4309-8d0f-d6901597a703.png)

2. 选择.Net6.0

![2](https://user-images.githubusercontent.com/8428709/163266610-d118dd9a-19d4-4521-94e3-b78fa9d584a7.png)

3. 将窗体尺寸定为 1000 x 1000 , 用于后面检测缩放是否正确

![3](https://user-images.githubusercontent.com/8428709/163266621-0ebe0f55-a6b6-431f-a720-f456f59ff5c4.png)

4. 添加一个按钮 , 尺寸定为 150 x 50

![4](https://user-images.githubusercontent.com/8428709/163266653-de510ced-eb5d-4b71-81f7-56c8de189645.png)

5. 添加一个图片框 , 尺寸定为 300 x 300 , 右键导入一张图片

![5](https://user-images.githubusercontent.com/8428709/163266652-befe30dc-9af2-4755-8396-22ef043b6ec1.png)
![6](https://user-images.githubusercontent.com/8428709/163266647-b7fda41f-32ab-40e4-95e7-88801d145306.png)

6. 添加测试代码

```
namespace WinFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            Text = this.Width + "x" + this.Height + " pic "+ pictureBox1.Width + "x" + pictureBox1.Height + 启动环境(); 

        }

        public static string 启动环境()
        {
#if NET461
            return (".NET Framework 4.6.1");
#elif NET6_0
            return (".NET6");
#endif  
        }

    }
}
```


7. 运行看看效果: net6下运行,尺寸都是对的

![7](https://user-images.githubusercontent.com/8428709/163266645-90c8ca51-0a2d-4fe9-ac4f-40101042f181.png)

## 正式开始

1. 右键工程,添加应用程序清单 `app.manifest`, 文件名用默认,修改

![QQ截图20220413234934](https://user-images.githubusercontent.com/8428709/163276209-58e8968d-28ac-4405-9d3d-13bdc6915f2b.png)

取消这段的注释,打开感知 DPI
```
	<application xmlns="urn:schemas-microsoft-com:asm.v3">
		<windowsSettings>
			<dpiAware xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">true</dpiAware>
			<longPathAware xmlns="http://schemas.microsoft.com/SMI/2016/WindowsSettings">true</longPathAware>
		</windowsSettings>
	</application>
```

2. 双击工程名称, 编辑配置文件,

`TargetFrameworks` 改为双目标框架 `<TargetFrameworks>net6.0-windows;net461;</TargetFrameworks>` , 保存后提示重载工程 , 最好是关闭vs再打开一次.

完整文件如下
```
<Project Sdk="Microsoft.NET.Sdk">

	<PropertyGroup>
		<OutputType>WinExe</OutputType>
		<TargetFrameworks>net6.0-windows;net461;</TargetFrameworks>
		<UseWindowsForms>true</UseWindowsForms>
		<ApplicationManifest>app.manifest</ApplicationManifest>
		<ApplicationVisualStyles>true</ApplicationVisualStyles>
		<ApplicationUseCompatibleTextRendering>false</ApplicationUseCompatibleTextRendering>
		<ApplicationHighDpiMode>SystemAware</ApplicationHighDpiMode>
	</PropertyGroup>

	<ItemGroup>
		<Compile Update="Properties\Resources.Designer.cs">
			<DesignTime>True</DesignTime>
			<AutoGen>True</AutoGen>
			<DependentUpon>Resources.resx</DependentUpon>
		</Compile>
	</ItemGroup>

	<ItemGroup>
		<EmbeddedResource Update="Properties\Resources.resx">
			<Generator>ResXFileCodeGenerator</Generator>
			<LastGenOutput>Resources.Designer.cs</LastGenOutput>
		</EmbeddedResource>
	</ItemGroup>
</Project>
```

3. 如果提示找不到控件, 在 Form1.Designer.cs 和 Form1.cs 添加

```
using System;
using System.Windows.Forms;
```

4. `Program.cs`注释掉 `ApplicationConfiguration.Initialize();`

5. 运行选择 `net461`

_备注:我的屏幕是 2800 x 1800 ,缩放 175%_

![QQ截图20220414002554](https://user-images.githubusercontent.com/8428709/163280230-fa0c85ca-8684-498c-b456-ee1fc36c0a90.png)

果然, 显示尺寸不对

![QQ截图20220414002450](https://user-images.githubusercontent.com/8428709/163280144-76d3c1bb-4010-4c58-b3c8-a7d24fe603b2.png)


6. Form1.cs 添加 'AutoScaleMode = AutoScaleMode.Dpi;'

```
public Form1()
{
    AutoScaleMode = AutoScaleMode.Dpi; //添加这句,要在'InitializeComponent();'上方
    InitializeComponent();
}
```

再次运行

![QQ截图20220414002857](https://user-images.githubusercontent.com/8428709/163280527-4ecc6a95-e12e-4a75-97e7-e1cd2faa7c90.png)

**完美!**

7. 双击编辑窗体,没有提示100%缩放, 添加标准菜单和DataGridView测试

![QQ截图20220414003217](https://user-images.githubusercontent.com/8428709/163280909-0494bf3b-e5a7-4503-b42c-d8187320a7a9.png)

**完美!双倍的快乐!**

## 总结

* 新建.Net Windows窗体应用 (Winform)工程 [.Net6.0]
* 添加应用程序清单 `app.manifest`, 打开感知 DPI
* `TargetFrameworks` 改为双目标框架 `<TargetFrameworks>net6.0-windows;net461;</TargetFrameworks>`
* `Program.cs`注释掉 `ApplicationConfiguration.Initialize();`
* `AutoScaleMode = AutoScaleMode.Dpi;` //添加这句,要在'InitializeComponent();'上方

## 老工程也可以通过编辑projet文件升级到这种新工程格式,支持本文说的功能, 需要继续出教程的请在评论区留言, 这几天都在度假中, 今天就写到这里了. 下回见!