方法一
1、在WPF项目中增加一个新的类文件，粘贴如下代码：
public static class ConsoleManager
{
private const string Kernel32_DllName
= "kernel32.dll";
[DllImport(Kernel32_DllName
)]
private static extern bool
AllocConsole();
[DllImport(Kernel32_DllName
)]
private static extern bool
FreeConsole();
[DllImport(Kernel32_DllName
)]
private static extern IntPtr
GetConsoleWindow();
[DllImport(Kernel32_DllName
)]
private static extern int
GetConsoleOutputCP();
public static bool HasConsole
{
get
{
return GetConsoleWindow() != IntPtr
.Zero
;
}
}
public static void Show()
{
#
if DEBUG
if (!HasConsole
)
{
AllocConsole();
InvalidateOutAndError();
}
#endif
}
public static void Hide()
{
#
if DEBUG
if (HasConsole
)
{
SetOutAndErrorNull();
FreeConsole();
}
#endif
}
public static void Toggle()
{
if (HasConsole
)
{
Hide();
}
else
{
Show();
}
}
static void InvalidateOutAndError()
{
Type type
= typeof(System
.Console
);
System
.Reflection
.FieldInfo _out
= type
.GetField("_out",
System
.Reflection
.BindingFlags
.Static
| System
.Reflection
.BindingFlags
.NonPublic
);
System
.Reflection
.FieldInfo _error
= type
.GetField("_error",
System
.Reflection
.BindingFlags
.Static
| System
.Reflection
.BindingFlags
.NonPublic
);
System
.Reflection
.MethodInfo _InitializeStdOutError
= type
.GetMethod("InitializeStdOutError",
System
.Reflection
.BindingFlags
.Static
| System
.Reflection
.BindingFlags
.NonPublic
);
Debug
.Assert(_out
!= null);
Debug
.Assert(_error
!= null);
Debug
.Assert(_InitializeStdOutError
!= null);
_out
.SetValue(null, null);
_error
.SetValue(null, null);
_InitializeStdOutError
.Invoke(null, new object[] { true });
}
static void SetOutAndErrorNull()
{
Console
.SetOut(TextWriter
.Null
);
Console
.SetError(TextWriter
.Null
);
}
}
2、调用
private void Button_Click(object sender
, RoutedEventArgs e
)
{
ConsoleManager
.Show();
Console
.ForegroundColor
= ConsoleColor
.Red
;
Console
.WriteLine("这是测试信息");
}
3、更改项目属性
右击项目，在应用程序选项卡中暂时切换输出类型为：控制台应用程序
4、运行效果
方法二：使用Trace
1、直接使用Trace
private void Button_Click(object sender
, RoutedEventArgs e
)
{
Trace
.WriteLine("这是测试信息");
}
2、效果
