# 十七、内置工具类

## AssemblyHelper 程序集工具类

### 获取启动项目引用的程序集列表

```csharp
var assemblies = AssemblyHelper.GetEntryReferencedAssemblies(prefixName:null);
```

获取解决方案所有程序集

```csharp
var assemblies = AssemblyHelper.GetApplicationAssembliesWithinNuget(prefixName:null);
```

## StringHelper 字符串工具类

### 将下划线命名方式转为大骆驼方式

```csharp
var str = StringHelper.ConvertUpperUnderlineNameToCamelCase("PERSON_ID")    // => PersonId
```

### 将大骆驼命名方式转换为下划线命名方式

```csharp
var str = StringHelper.ConvertCamelCaseToUpperUnderlineName("PersonId")    // => PERSON_ID
```


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